From a404ae128eaebd91700588a4eaced2644eb49fbd Mon Sep 17 00:00:00 2001 From: stack Date: Thu, 9 Apr 2020 17:17:10 -0700 Subject: [PATCH] HBASE-24162 Move CHANGES.txt to CHANGES.md. Add RELEASENOTES.md too on branch-2, branch-2.3, and master --- CHANGES.md | 7088 ++++++++++++++++++++++++++++++++ CHANGES.txt | 4455 --------------------- RELEASENOTES.md | 10017 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 17105 insertions(+), 4455 deletions(-) create mode 100644 CHANGES.md delete mode 100755 CHANGES.txt create mode 100644 RELEASENOTES.md diff --git a/CHANGES.md b/CHANGES.md new file mode 100644 index 00000000000..1decdcde8a2 --- /dev/null +++ b/CHANGES.md @@ -0,0 +1,7088 @@ +# HBASE Changelog + + + +## Release 2.2.0 - Unreleased (as of 2019-06-11) + +### INCOMPATIBLE CHANGES: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-21991](https://issues.apache.org/jira/browse/HBASE-21991) | Fix MetaMetrics issues - [Race condition, Faulty remove logic], few improvements | Major | Coprocessors, metrics | +| [HBASE-22399](https://issues.apache.org/jira/browse/HBASE-22399) | Change default hadoop-two.version to 2.8.x and remove the 2.7.x hadoop checks | Major | build, hadoop2 | +| [HBASE-21082](https://issues.apache.org/jira/browse/HBASE-21082) | Reimplement assign/unassign related procedure metrics | Critical | amv2, metrics | +| [HBASE-20587](https://issues.apache.org/jira/browse/HBASE-20587) | Replace Jackson with shaded thirdparty gson | Major | dependencies | +| [HBASE-21727](https://issues.apache.org/jira/browse/HBASE-21727) | Simplify documentation around client timeout | Minor | . | +| [HBASE-21684](https://issues.apache.org/jira/browse/HBASE-21684) | Throw DNRIOE when connection or rpc client is closed | Major | asyncclient, Client | +| [HBASE-21792](https://issues.apache.org/jira/browse/HBASE-21792) | Mark HTableMultiplexer as deprecated and remove it in 3.0.0 | Major | Client | +| [HBASE-21657](https://issues.apache.org/jira/browse/HBASE-21657) | PrivateCellUtil#estimatedSerializedSizeOf has been the bottleneck in 100% scan case. | Major | Performance | +| [HBASE-21560](https://issues.apache.org/jira/browse/HBASE-21560) | Return a new TableDescriptor for MasterObserver#preModifyTable to allow coprocessor modify the TableDescriptor | Major | Coprocessors | +| [HBASE-21492](https://issues.apache.org/jira/browse/HBASE-21492) | CellCodec Written To WAL Before It's Verified | Critical | wal | +| [HBASE-21452](https://issues.apache.org/jira/browse/HBASE-21452) | Illegal character in hbase counters group name | Major | spark | +| [HBASE-21158](https://issues.apache.org/jira/browse/HBASE-21158) | Empty qualifier cell should not be returned if it does not match QualifierFilter | Critical | Filters | +| [HBASE-21223](https://issues.apache.org/jira/browse/HBASE-21223) | [amv2] Remove abort\_procedure from shell | Critical | amv2, hbck2, shell | +| [HBASE-20881](https://issues.apache.org/jira/browse/HBASE-20881) | Introduce a region transition procedure to handle all the state transition for a region | Major | amv2, proc-v2 | +| [HBASE-20884](https://issues.apache.org/jira/browse/HBASE-20884) | Replace usage of our Base64 implementation with java.util.Base64 | Major | . | + + +### NEW FEATURES: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-22148](https://issues.apache.org/jira/browse/HBASE-22148) | Provide an alternative to CellUtil.setTimestamp | Blocker | API, Coprocessors | +| [HBASE-21815](https://issues.apache.org/jira/browse/HBASE-21815) | Make isTrackingMetrics and getMetrics of ScannerContext public | Minor | . | +| [HBASE-21926](https://issues.apache.org/jira/browse/HBASE-21926) | Profiler servlet | Major | master, Operability, regionserver | +| [HBASE-20886](https://issues.apache.org/jira/browse/HBASE-20886) | [Auth] Support keytab login in hbase client | Critical | asyncclient, Client, security | +| [HBASE-17942](https://issues.apache.org/jira/browse/HBASE-17942) | Disable region splits and merges per table | Major | . | +| [HBASE-21753](https://issues.apache.org/jira/browse/HBASE-21753) | Support getting the locations for all the replicas of a region | Major | Client | +| [HBASE-20636](https://issues.apache.org/jira/browse/HBASE-20636) | Introduce two bloom filter type : ROWPREFIX\_FIXED\_LENGTH and ROWPREFIX\_DELIMITED | Major | HFile, regionserver, Scanners | +| [HBASE-20649](https://issues.apache.org/jira/browse/HBASE-20649) | Validate HFiles do not have PREFIX\_TREE DataBlockEncoding | Minor | Operability, tooling | + + +### IMPROVEMENTS: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-22284](https://issues.apache.org/jira/browse/HBASE-22284) | optimization StringBuilder.append of AbstractMemStore.toString | Trivial | . | +| [HBASE-22523](https://issues.apache.org/jira/browse/HBASE-22523) | Refactor RegionStates#getAssignmentsByTable to make it easy to understand | Major | . | +| [HBASE-22511](https://issues.apache.org/jira/browse/HBASE-22511) | More missing /rs-status links | Minor | UI | +| [HBASE-22496](https://issues.apache.org/jira/browse/HBASE-22496) | UnsafeAccess.unsafeCopy should not copy more than UNSAFE\_COPY\_THRESHOLD on each iteration | Major | . | +| [HBASE-22488](https://issues.apache.org/jira/browse/HBASE-22488) | Cleanup the explicit timeout value for test methods | Major | . | +| [HBASE-22411](https://issues.apache.org/jira/browse/HBASE-22411) | Refactor codes of moving reigons in RSGroup | Major | rsgroup | +| [HBASE-22467](https://issues.apache.org/jira/browse/HBASE-22467) | WebUI changes to enable Apache Knox UI proxying | Major | UI | +| [HBASE-22474](https://issues.apache.org/jira/browse/HBASE-22474) | Add --mvn-custom-repo parameter to yetus calls | Minor | . | +| [HBASE-20305](https://issues.apache.org/jira/browse/HBASE-20305) | Add option to SyncTable that skip deletes on target cluster | Minor | mapreduce | +| [HBASE-21784](https://issues.apache.org/jira/browse/HBASE-21784) | Dump replication queue should show list of wal files ordered chronologically | Major | Replication, tooling | +| [HBASE-22384](https://issues.apache.org/jira/browse/HBASE-22384) | Formatting issues in administration section of book | Minor | community, documentation | +| [HBASE-21658](https://issues.apache.org/jira/browse/HBASE-21658) | Should get the meta replica number from zk instead of config at client side | Critical | Client | +| [HBASE-22365](https://issues.apache.org/jira/browse/HBASE-22365) | Region may be opened on two RegionServers | Blocker | amv2 | +| [HBASE-22392](https://issues.apache.org/jira/browse/HBASE-22392) | Remove extra/useless + | Trivial | . | +| [HBASE-20494](https://issues.apache.org/jira/browse/HBASE-20494) | Upgrade com.yammer.metrics dependency | Major | dependencies | +| [HBASE-22358](https://issues.apache.org/jira/browse/HBASE-22358) | Change rubocop configuration for method length | Minor | community, shell | +| [HBASE-22379](https://issues.apache.org/jira/browse/HBASE-22379) | Fix Markdown for "Voting on Release Candidates" in book | Minor | community, documentation | +| [HBASE-22109](https://issues.apache.org/jira/browse/HBASE-22109) | Update hbase shaded content checker after guava update in hadoop branch-3.0 to 27.0-jre | Minor | . | +| [HBASE-22087](https://issues.apache.org/jira/browse/HBASE-22087) | Update LICENSE/shading for the dependencies from the latest Hadoop trunk | Minor | hadoop3 | +| [HBASE-22341](https://issues.apache.org/jira/browse/HBASE-22341) | Add explicit guidelines for removing deprecations in book | Major | API, community, documentation | +| [HBASE-22225](https://issues.apache.org/jira/browse/HBASE-22225) | Profiler tab on Master/RS UI not working w/o comprehensive message | Minor | UI | +| [HBASE-22291](https://issues.apache.org/jira/browse/HBASE-22291) | Fix recovery of recovered.edits files under root dir | Major | . | +| [HBASE-22283](https://issues.apache.org/jira/browse/HBASE-22283) | Print row and table information when failed to get region location | Major | Client, logging | +| [HBASE-22296](https://issues.apache.org/jira/browse/HBASE-22296) | Remove TestFromClientSide.testGetStartEndKeysWithRegionReplicas | Major | test | +| [HBASE-22250](https://issues.apache.org/jira/browse/HBASE-22250) | The same constants used in many places should be placed in constant classes | Minor | Client, conf, regionserver | +| [HBASE-20586](https://issues.apache.org/jira/browse/HBASE-20586) | SyncTable tool: Add support for cross-realm remote clusters | Major | mapreduce, Operability, Replication | +| [HBASE-21257](https://issues.apache.org/jira/browse/HBASE-21257) | misspelled words.[occured -\> occurred] | Trivial | . | +| [HBASE-22193](https://issues.apache.org/jira/browse/HBASE-22193) | Add backoff when region failed open too many times | Major | . | +| [HBASE-22188](https://issues.apache.org/jira/browse/HBASE-22188) | Make TestSplitMerge more stable | Major | test | +| [HBASE-22097](https://issues.apache.org/jira/browse/HBASE-22097) | Modify the description of split command in shell | Trivial | shell | +| [HBASE-21964](https://issues.apache.org/jira/browse/HBASE-21964) | unset Quota by Throttle Type | Major | master | +| [HBASE-22093](https://issues.apache.org/jira/browse/HBASE-22093) | Combine TestRestoreSnapshotFromClientWithRegionReplicas to CloneSnapshotFromClientAfterSplittingRegionTestBase#testCloneSnapshotAfterSplittingRegion | Major | . | +| [HBASE-22009](https://issues.apache.org/jira/browse/HBASE-22009) | Improve RSGroupInfoManagerImpl#getDefaultServers() | Minor | rsgroup | +| [HBASE-22032](https://issues.apache.org/jira/browse/HBASE-22032) | KeyValue validation should check for null byte array | Major | . | +| [HBASE-21667](https://issues.apache.org/jira/browse/HBASE-21667) | Move to latest ASF Parent POM | Minor | build | +| [HBASE-21810](https://issues.apache.org/jira/browse/HBASE-21810) | bulkload support set hfile compression on client | Major | mapreduce | +| [HBASE-21987](https://issues.apache.org/jira/browse/HBASE-21987) | Simplify RSGroupInfoManagerImpl#flushConfig() for offline mode | Minor | rsgroup | +| [HBASE-21871](https://issues.apache.org/jira/browse/HBASE-21871) | Support to specify a peer table name in VerifyReplication tool | Major | . | +| [HBASE-21255](https://issues.apache.org/jira/browse/HBASE-21255) | [acl] Refactor TablePermission into three classes (Global, Namespace, Table) | Major | . | +| [HBASE-21410](https://issues.apache.org/jira/browse/HBASE-21410) | A helper page that help find all problematic regions and procedures | Major | . | +| [HBASE-20734](https://issues.apache.org/jira/browse/HBASE-20734) | Colocate recovered edits directory with hbase.wal.dir | Major | MTTR, Recovery, wal | +| [HBASE-20401](https://issues.apache.org/jira/browse/HBASE-20401) | Make \`MAX\_WAIT\` and \`waitIfNotFinished\` in CleanerContext configurable | Minor | master | +| [HBASE-21481](https://issues.apache.org/jira/browse/HBASE-21481) | [acl] Superuser's permissions should not be granted or revoked by any non-su global admin | Major | . | +| [HBASE-21967](https://issues.apache.org/jira/browse/HBASE-21967) | Split TestServerCrashProcedure and TestServerCrashProcedureWithReplicas | Major | . | +| [HBASE-21867](https://issues.apache.org/jira/browse/HBASE-21867) | Support multi-threads in HFileArchiver | Major | . | +| [HBASE-21932](https://issues.apache.org/jira/browse/HBASE-21932) | Use Runtime.getRuntime().halt to terminate regionserver when abort timeout | Major | . | +| [HBASE-21875](https://issues.apache.org/jira/browse/HBASE-21875) | Change the retry logic in RSProcedureDispatcher to 'retry by default, only if xxx' | Major | proc-v2 | +| [HBASE-21780](https://issues.apache.org/jira/browse/HBASE-21780) | Avoid a wide line on the RegionServer webUI for many ZooKeeper servers | Minor | UI, Usability | +| [HBASE-21636](https://issues.apache.org/jira/browse/HBASE-21636) | Enhance the shell scan command to support missing scanner specifications like ReadType, IsolationLevel etc. | Major | shell | +| [HBASE-21857](https://issues.apache.org/jira/browse/HBASE-21857) | Do not need to check clusterKey if replicationEndpoint is provided when adding a peer | Major | . | +| [HBASE-21201](https://issues.apache.org/jira/browse/HBASE-21201) | Support to run VerifyReplication MR tool without peerid | Major | hbase-operator-tools | +| [HBASE-21816](https://issues.apache.org/jira/browse/HBASE-21816) | Print source cluster replication config directory | Trivial | Replication | +| [HBASE-19616](https://issues.apache.org/jira/browse/HBASE-19616) | Review of LogCleaner Class | Minor | . | +| [HBASE-21830](https://issues.apache.org/jira/browse/HBASE-21830) | Backport HBASE-20577 (Make Log Level page design consistent with the design of other pages in UI) to branch-2 | Major | UI, Usability | +| [HBASE-21833](https://issues.apache.org/jira/browse/HBASE-21833) | Use NettyAsyncFSWALConfigHelper.setEventLoopConfig to prevent creating too many netty event loop when executing TestHRegion | Minor | test | +| [HBASE-21634](https://issues.apache.org/jira/browse/HBASE-21634) | Print error message when user uses unacceptable values for LIMIT while setting quotas. | Minor | . | +| [HBASE-21789](https://issues.apache.org/jira/browse/HBASE-21789) | Rewrite MetaTableAccessor.multiMutate with Table.coprocessorService | Major | Client, Coprocessors | +| [HBASE-21689](https://issues.apache.org/jira/browse/HBASE-21689) | Make table/namespace specific current quota info available in shell(describe\_namespace & describe) | Minor | . | +| [HBASE-20215](https://issues.apache.org/jira/browse/HBASE-20215) | Rename CollectionUtils to ConcurrentMapUtils | Trivial | . | +| [HBASE-21720](https://issues.apache.org/jira/browse/HBASE-21720) | metric to measure how actions are distributed to servers within a MultiAction | Minor | Client, metrics, monitoring | +| [HBASE-21595](https://issues.apache.org/jira/browse/HBASE-21595) | Print thread's information and stack traces when RS is aborting forcibly | Minor | regionserver | +| [HBASE-20209](https://issues.apache.org/jira/browse/HBASE-20209) | Do Not Use Both Map containsKey and get Methods in Replication Sink | Trivial | Replication | +| [HBASE-21712](https://issues.apache.org/jira/browse/HBASE-21712) | Make submit-patch.py python3 compatible | Minor | tooling | +| [HBASE-21590](https://issues.apache.org/jira/browse/HBASE-21590) | Optimize trySkipToNextColumn in StoreScanner a bit | Critical | Performance, Scanners | +| [HBASE-21297](https://issues.apache.org/jira/browse/HBASE-21297) | ModifyTableProcedure can throw TNDE instead of IOE in case of REGION\_REPLICATION change | Minor | . | +| [HBASE-21700](https://issues.apache.org/jira/browse/HBASE-21700) | Simplify the implementation of RSGroupInfoManagerImpl | Major | rsgroup | +| [HBASE-21694](https://issues.apache.org/jira/browse/HBASE-21694) | Add append\_peer\_exclude\_tableCFs and remove\_peer\_exclude\_tableCFs shell commands | Major | . | +| [HBASE-21645](https://issues.apache.org/jira/browse/HBASE-21645) | Perform sanity check and disallow table creation/modification with region replication \< 1 | Minor | . | +| [HBASE-21360](https://issues.apache.org/jira/browse/HBASE-21360) | Disable printing of stack-trace in shell for quotas | Minor | shell | +| [HBASE-21662](https://issues.apache.org/jira/browse/HBASE-21662) | Add append\_peer\_exclude\_namespaces and remove\_peer\_exclude\_namespaces shell commands | Major | . | +| [HBASE-21659](https://issues.apache.org/jira/browse/HBASE-21659) | Avoid to load duplicate coprocessors in system config and table descriptor | Minor | . | +| [HBASE-21642](https://issues.apache.org/jira/browse/HBASE-21642) | CopyTable by reading snapshot and bulkloading will save a lot of time. | Major | . | +| [HBASE-21643](https://issues.apache.org/jira/browse/HBASE-21643) | Introduce two new region coprocessor method and deprecated postMutationBeforeWAL | Major | . | +| [HBASE-21640](https://issues.apache.org/jira/browse/HBASE-21640) | Remove the TODO when increment zero | Major | . | +| [HBASE-21631](https://issues.apache.org/jira/browse/HBASE-21631) | list\_quotas should print human readable values for LIMIT | Minor | shell | +| [HBASE-21635](https://issues.apache.org/jira/browse/HBASE-21635) | Use maven enforcer to ban imports from illegal packages | Major | build | +| [HBASE-21514](https://issues.apache.org/jira/browse/HBASE-21514) | Refactor CacheConfig | Major | . | +| [HBASE-21520](https://issues.apache.org/jira/browse/HBASE-21520) | TestMultiColumnScanner cost long time when using ROWCOL bloom type | Major | test | +| [HBASE-21554](https://issues.apache.org/jira/browse/HBASE-21554) | Show replication endpoint classname for replication peer on master web UI | Minor | UI | +| [HBASE-21549](https://issues.apache.org/jira/browse/HBASE-21549) | Add shell command for serial replication peer | Major | . | +| [HBASE-21283](https://issues.apache.org/jira/browse/HBASE-21283) | Add new shell command 'rit' for listing regions in transition | Minor | Operability, shell | +| [HBASE-21567](https://issues.apache.org/jira/browse/HBASE-21567) | Allow overriding configs starting up the shell | Major | shell | +| [HBASE-21413](https://issues.apache.org/jira/browse/HBASE-21413) | Empty meta log doesn't get split when restart whole cluster | Major | . | +| [HBASE-21524](https://issues.apache.org/jira/browse/HBASE-21524) | Unnecessary DEBUG log in ConnectionImplementation#isTableEnabled | Major | Client | +| [HBASE-21511](https://issues.apache.org/jira/browse/HBASE-21511) | Remove in progress snapshot check in SnapshotFileCache#getUnreferencedFiles | Minor | snapshots | +| [HBASE-21480](https://issues.apache.org/jira/browse/HBASE-21480) | Taking snapshot when RS crashes prevent we bring the regions online | Major | snapshots | +| [HBASE-21485](https://issues.apache.org/jira/browse/HBASE-21485) | Add more debug logs for remote procedure execution | Major | proc-v2 | +| [HBASE-21328](https://issues.apache.org/jira/browse/HBASE-21328) | add HBASE\_DISABLE\_HADOOP\_CLASSPATH\_LOOKUP switch to hbase-env.sh | Minor | documentation, Operability | +| [HBASE-19682](https://issues.apache.org/jira/browse/HBASE-19682) | Use Collections.emptyList() For Empty List Values | Minor | . | +| [HBASE-21388](https://issues.apache.org/jira/browse/HBASE-21388) | No need to instantiate MemStoreLAB for master which not carry table | Major | . | +| [HBASE-21325](https://issues.apache.org/jira/browse/HBASE-21325) | Force to terminate regionserver when abort hang in somewhere | Major | . | +| [HBASE-21385](https://issues.apache.org/jira/browse/HBASE-21385) | HTable.delete request use rpc call directly instead of AsyncProcess | Major | . | +| [HBASE-21318](https://issues.apache.org/jira/browse/HBASE-21318) | Make RefreshHFilesClient runnable | Minor | HFile | +| [HBASE-21263](https://issues.apache.org/jira/browse/HBASE-21263) | Mention compression algorithm along with other storefile details | Minor | . | +| [HBASE-21290](https://issues.apache.org/jira/browse/HBASE-21290) | No need to instantiate BlockCache for master which not carry table | Major | . | +| [HBASE-21256](https://issues.apache.org/jira/browse/HBASE-21256) | Improve IntegrationTestBigLinkedList for testing huge data | Major | integration tests | +| [HBASE-21251](https://issues.apache.org/jira/browse/HBASE-21251) | Refactor RegionMover | Major | Operability | +| [HBASE-21303](https://issues.apache.org/jira/browse/HBASE-21303) | [shell] clear\_deadservers with no args fails | Major | . | +| [HBASE-21098](https://issues.apache.org/jira/browse/HBASE-21098) | Improve Snapshot Performance with Temporary Snapshot Directory when rootDir on S3 | Major | . | +| [HBASE-21299](https://issues.apache.org/jira/browse/HBASE-21299) | List counts of actual region states in master UI tables section | Major | UI | +| [HBASE-21289](https://issues.apache.org/jira/browse/HBASE-21289) | Remove the log "'hbase.regionserver.maxlogs' was deprecated." in AbstractFSWAL | Minor | . | +| [HBASE-21185](https://issues.apache.org/jira/browse/HBASE-21185) | WALPrettyPrinter: Additional useful info to be printed by wal printer tool, for debugability purposes | Minor | Operability | +| [HBASE-21103](https://issues.apache.org/jira/browse/HBASE-21103) | nightly test cache of yetus install needs to be more thorough in verification | Major | test | +| [HBASE-21207](https://issues.apache.org/jira/browse/HBASE-21207) | Add client side sorting functionality in master web UI for table and region server details. | Minor | master, monitoring, UI, Usability | +| [HBASE-20857](https://issues.apache.org/jira/browse/HBASE-20857) | JMX - add Balancer status = enabled / disabled | Major | API, master, metrics, REST, tooling, Usability | +| [HBASE-21164](https://issues.apache.org/jira/browse/HBASE-21164) | reportForDuty to spew less log if master is initializing | Minor | regionserver | +| [HBASE-21204](https://issues.apache.org/jira/browse/HBASE-21204) | NPE when scan raw DELETE\_FAMILY\_VERSION and codec is not set | Major | . | +| [HBASE-20307](https://issues.apache.org/jira/browse/HBASE-20307) | LoadTestTool prints too much zookeeper logging | Minor | tooling | +| [HBASE-21155](https://issues.apache.org/jira/browse/HBASE-21155) | Save on a few log strings and some churn in wal splitter by skipping out early if no logs in dir | Trivial | . | +| [HBASE-21129](https://issues.apache.org/jira/browse/HBASE-21129) | Clean up duplicate codes in #equals and #hashCode methods of Filter | Minor | Filters | +| [HBASE-21157](https://issues.apache.org/jira/browse/HBASE-21157) | Split TableInputFormatScan to individual tests | Minor | test | +| [HBASE-21107](https://issues.apache.org/jira/browse/HBASE-21107) | add a metrics for netty direct memory | Minor | IPC/RPC | +| [HBASE-21153](https://issues.apache.org/jira/browse/HBASE-21153) | Shaded client jars should always build in relevant phase to avoid confusion | Major | build | +| [HBASE-21126](https://issues.apache.org/jira/browse/HBASE-21126) | Add ability for HBase Canary to ignore a configurable number of ZooKeeper down nodes | Minor | canary, Zookeeper | +| [HBASE-20749](https://issues.apache.org/jira/browse/HBASE-20749) | Upgrade our use of checkstyle to 8.6+ | Minor | build, community | +| [HBASE-21071](https://issues.apache.org/jira/browse/HBASE-21071) | HBaseTestingUtility::startMiniCluster() to use builder pattern | Major | test | +| [HBASE-20387](https://issues.apache.org/jira/browse/HBASE-20387) | flaky infrastructure should work for all branches | Critical | test | +| [HBASE-20469](https://issues.apache.org/jira/browse/HBASE-20469) | Directory used for sidelining old recovered edits files should be made configurable | Minor | . | +| [HBASE-20979](https://issues.apache.org/jira/browse/HBASE-20979) | Flaky test reporting should specify what JSON it needs and handle HTTP errors | Minor | test | +| [HBASE-20985](https://issues.apache.org/jira/browse/HBASE-20985) | add two attributes when we do normalization | Major | . | +| [HBASE-20965](https://issues.apache.org/jira/browse/HBASE-20965) | Separate region server report requests to new handlers | Major | Performance | +| [HBASE-20845](https://issues.apache.org/jira/browse/HBASE-20845) | Support set the consistency for Gets and Scans in thrift2 | Major | Thrift | +| [HBASE-20986](https://issues.apache.org/jira/browse/HBASE-20986) | Separate the config of block size when we do log splitting and write Hlog | Major | . | +| [HBASE-19036](https://issues.apache.org/jira/browse/HBASE-19036) | Add action in Chaos Monkey to restart Active Namenode | Minor | . | +| [HBASE-20856](https://issues.apache.org/jira/browse/HBASE-20856) | PITA having to set WAL provider in two places | Minor | Operability, wal | +| [HBASE-20935](https://issues.apache.org/jira/browse/HBASE-20935) | HStore.removeCompactedFiles should log in case it is unable to delete a file | Minor | . | +| [HBASE-20873](https://issues.apache.org/jira/browse/HBASE-20873) | Update doc for Endpoint-based Export | Minor | documentation | +| [HBASE-20672](https://issues.apache.org/jira/browse/HBASE-20672) | New metrics ReadRequestRate and WriteRequestRate | Minor | metrics | +| [HBASE-20617](https://issues.apache.org/jira/browse/HBASE-20617) | Upgrade/remove jetty-jsp | Minor | . | +| [HBASE-20396](https://issues.apache.org/jira/browse/HBASE-20396) | Remove redundant MBean from thrift JMX | Major | Thrift | +| [HBASE-20357](https://issues.apache.org/jira/browse/HBASE-20357) | AccessControlClient API Enhancement | Major | security | + + +### BUG FIXES: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-22563](https://issues.apache.org/jira/browse/HBASE-22563) | Reduce retained jobs for Jenkins pipelines | Major | . | +| [HBASE-22552](https://issues.apache.org/jira/browse/HBASE-22552) | Rewrite TestEndToEndSplitTransaction.testCanSplitJustAfterASplit | Major | test | +| [HBASE-22551](https://issues.apache.org/jira/browse/HBASE-22551) | TestMasterOperationsForRegionReplicas is flakey | Major | read replicas, test | +| [HBASE-22481](https://issues.apache.org/jira/browse/HBASE-22481) | Javadoc Warnings: reference not found | Trivial | documentation | +| [HBASE-22546](https://issues.apache.org/jira/browse/HBASE-22546) | TestRegionServerHostname#testRegionServerHostname fails reliably for me | Major | . | +| [HBASE-22534](https://issues.apache.org/jira/browse/HBASE-22534) | TestCellUtil fails when run on JDK11 | Minor | java, test | +| [HBASE-22536](https://issues.apache.org/jira/browse/HBASE-22536) | TestForeignExceptionSerialization fails when run on JDK11 | Minor | java | +| [HBASE-22535](https://issues.apache.org/jira/browse/HBASE-22535) | TestShellRSGroups fails when run on JDK11 | Minor | java, shell | +| [HBASE-22518](https://issues.apache.org/jira/browse/HBASE-22518) | yetus personality is treating branch-1.4 like earlier branches for hadoopcheck | Major | test | +| [HBASE-22513](https://issues.apache.org/jira/browse/HBASE-22513) | Admin#getQuota does not work correctly if exceedThrottleQuota is set | Major | Quotas | +| [HBASE-22522](https://issues.apache.org/jira/browse/HBASE-22522) | The integration test in master branch's nightly job has error "ERROR: Only found 1050 rows." | Major | . | +| [HBASE-22490](https://issues.apache.org/jira/browse/HBASE-22490) | Nightly client integration test fails with hadoop-3 | Major | build | +| [HBASE-22502](https://issues.apache.org/jira/browse/HBASE-22502) | Purge the logs when we reach the EOF for the last wal file when replication | Major | . | +| [HBASE-22503](https://issues.apache.org/jira/browse/HBASE-22503) | Failed to upgrade to 2.2+ as the global permission which storaged in zk is not right | Blocker | . | +| [HBASE-22487](https://issues.apache.org/jira/browse/HBASE-22487) | getMostLoadedRegions is unused | Trivial | regionserver | +| [HBASE-22485](https://issues.apache.org/jira/browse/HBASE-22485) | Fix failed ut TestClusterRestartFailover | Major | . | +| [HBASE-22486](https://issues.apache.org/jira/browse/HBASE-22486) | Fix flaky test TestLockManager | Major | . | +| [HBASE-22471](https://issues.apache.org/jira/browse/HBASE-22471) | Our nightly jobs for master and branch-2 are still using hadoop-2.7.1 in integration test | Major | build | +| [HBASE-22003](https://issues.apache.org/jira/browse/HBASE-22003) | Fix flaky test TestVerifyReplication.testHBase14905 | Major | . | +| [HBASE-22441](https://issues.apache.org/jira/browse/HBASE-22441) | BucketCache NullPointerException in cacheBlock | Major | BucketCache | +| [HBASE-22473](https://issues.apache.org/jira/browse/HBASE-22473) | Split TestSCP | Major | Recovery, test | +| [HBASE-22456](https://issues.apache.org/jira/browse/HBASE-22456) | Polish TestSplitTransitionOnCluster | Major | test | +| [HBASE-21800](https://issues.apache.org/jira/browse/HBASE-21800) | RegionServer aborted due to NPE from MetaTableMetrics coprocessor | Critical | Coprocessors, meta, metrics, Operability | +| [HBASE-22462](https://issues.apache.org/jira/browse/HBASE-22462) | Should run a 'mvn install' at the end of hadoop check in pre commit job | Major | build | +| [HBASE-22440](https://issues.apache.org/jira/browse/HBASE-22440) | HRegionServer#getWalGroupsReplicationStatus() throws NPE | Major | regionserver, Replication | +| [HBASE-22226](https://issues.apache.org/jira/browse/HBASE-22226) | Incorrect level for headings in asciidoc | Trivial | documentation | +| [HBASE-22442](https://issues.apache.org/jira/browse/HBASE-22442) | Nightly build is failing with hadoop 3.x | Major | build, hadoop3 | +| [HBASE-20970](https://issues.apache.org/jira/browse/HBASE-20970) | Update hadoop check versions for hadoop3 in hbase-personality | Major | build | +| [HBASE-22424](https://issues.apache.org/jira/browse/HBASE-22424) | Interactions in RSGroup test classes will cause TestRSGroupsAdmin2.testMoveServersAndTables and TestRSGroupsBalance.testGroupBalance flaky | Major | rsgroup | +| [HBASE-22404](https://issues.apache.org/jira/browse/HBASE-22404) | Open/Close region request may be executed twice when master restart | Major | . | +| [HBASE-22274](https://issues.apache.org/jira/browse/HBASE-22274) | Cell size limit check on append should consider cell's previous size. | Minor | . | +| [HBASE-22072](https://issues.apache.org/jira/browse/HBASE-22072) | High read/write intensive regions may cause long crash recovery | Major | Performance, Recovery | +| [HBASE-22324](https://issues.apache.org/jira/browse/HBASE-22324) | loss a mass of data when the sequenceId of cells greater than Integer.Max, because MemStoreMergerSegmentsIterator can not merge segments | Blocker | in-memory-compaction | +| [HBASE-21777](https://issues.apache.org/jira/browse/HBASE-21777) | "Tune compaction throughput" debug messages even when nothing has changed | Trivial | Compaction | +| [HBASE-22360](https://issues.apache.org/jira/browse/HBASE-22360) | Abort timer doesn't set when abort is called during graceful shutdown process | Major | regionserver | +| [HBASE-20851](https://issues.apache.org/jira/browse/HBASE-20851) | Change rubocop config for max line length of 100 | Minor | community, shell | +| [HBASE-21467](https://issues.apache.org/jira/browse/HBASE-21467) | Fix flaky test TestCoprocessorClassLoader.testCleanupOldJars | Minor | . | +| [HBASE-22312](https://issues.apache.org/jira/browse/HBASE-22312) | Hadoop 3 profile for hbase-shaded-mapreduce should like mapreduce as a provided dependency | Major | mapreduce, shading | +| [HBASE-22314](https://issues.apache.org/jira/browse/HBASE-22314) | shaded byo-hadoop client should list needed hadoop modules as provided scope to avoid inclusion of unnecessary transitive depednencies | Major | hadoop2, hadoop3, shading | +| [HBASE-22047](https://issues.apache.org/jira/browse/HBASE-22047) | LeaseException in Scan should be retired | Major | Client, Scanners | +| [HBASE-22343](https://issues.apache.org/jira/browse/HBASE-22343) | Make procedure retry interval configurable in test | Major | amv2, test | +| [HBASE-22190](https://issues.apache.org/jira/browse/HBASE-22190) | SnapshotFileCache may fail to load the correct snapshot file list when there is an on-going snapshot operation | Blocker | snapshots | +| [HBASE-22354](https://issues.apache.org/jira/browse/HBASE-22354) | master never sets abortRequested, and thus abort timeout doesn't work for it | Major | . | +| [HBASE-22350](https://issues.apache.org/jira/browse/HBASE-22350) | Rewrite TestClientOperationTimeout so we do not timeout when creating table | Major | test | +| [HBASE-22340](https://issues.apache.org/jira/browse/HBASE-22340) | Corrupt KeyValue is silently ignored | Critical | wal | +| [HBASE-22054](https://issues.apache.org/jira/browse/HBASE-22054) | Space Quota: Compaction is not working for super user in case of NO\_WRITES\_COMPACTIONS | Minor | . | +| [HBASE-22236](https://issues.apache.org/jira/browse/HBASE-22236) | AsyncNonMetaRegionLocator should not cache HRegionLocation with null location | Major | asyncclient | +| [HBASE-22086](https://issues.apache.org/jira/browse/HBASE-22086) | space quota issue: deleting snapshot doesn't update the usage of table | Minor | . | +| [HBASE-22298](https://issues.apache.org/jira/browse/HBASE-22298) | branch-2.2 nightly fails "[ForOverride] Method annotated @ForOverride must have protected or package-private visibility" | Major | . | +| [HBASE-22292](https://issues.apache.org/jira/browse/HBASE-22292) | PreemptiveFastFailInterceptor clean repeatedFailuresMap issue | Blocker | . | +| [HBASE-22230](https://issues.apache.org/jira/browse/HBASE-22230) | REST Server drops connection on long scans | Major | . | +| [HBASE-22200](https://issues.apache.org/jira/browse/HBASE-22200) | WALSplitter.hasRecoveredEdits should use same FS instance from WAL region dir | Major | wal | +| [HBASE-22286](https://issues.apache.org/jira/browse/HBASE-22286) | License handling incorrectly lists CDDL/GPLv2+CE as safe to not aggregate | Critical | build, community | +| [HBASE-22282](https://issues.apache.org/jira/browse/HBASE-22282) | Should deal with error in the callback of RawAsyncHBaseAdmin.splitRegion methods | Major | Admin, asyncclient | +| [HBASE-22278](https://issues.apache.org/jira/browse/HBASE-22278) | RawAsyncHBaseAdmin should not use cached region location | Major | Admin, asyncclient | +| [HBASE-22222](https://issues.apache.org/jira/browse/HBASE-22222) | Site build fails after hbase-thirdparty upgrade | Blocker | website | +| [HBASE-22249](https://issues.apache.org/jira/browse/HBASE-22249) | Rest Server throws NoClassDefFoundError with Java 11 (run-time) | Major | . | +| [HBASE-22235](https://issues.apache.org/jira/browse/HBASE-22235) | OperationStatus.{SUCCESS\|FAILURE\|NOT\_RUN} are not visible to 3rd party coprocessors | Major | Coprocessors | +| [HBASE-22207](https://issues.apache.org/jira/browse/HBASE-22207) | Fix flakey TestAssignmentManager.testAssignSocketTimeout | Major | test | +| [HBASE-22202](https://issues.apache.org/jira/browse/HBASE-22202) | Fix new findbugs issues after we upgrade hbase-thirdparty dependencies | Major | findbugs | +| [HBASE-22144](https://issues.apache.org/jira/browse/HBASE-22144) | MultiRowRangeFilter does not work with reversed scans | Critical | Filters, Scanners | +| [HBASE-22198](https://issues.apache.org/jira/browse/HBASE-22198) | Fix flakey TestAsyncTableGetMultiThreaded | Major | test | +| [HBASE-22185](https://issues.apache.org/jira/browse/HBASE-22185) | RAMQueueEntry#writeToCache should freeBlock if any exception encountered instead of the IOException catch block | Major | . | +| [HBASE-22163](https://issues.apache.org/jira/browse/HBASE-22163) | Should not archive the compacted store files when region warmup | Blocker | . | +| [HBASE-22178](https://issues.apache.org/jira/browse/HBASE-22178) | Introduce a createTableAsync with TableDescriptor method in Admin | Major | Admin | +| [HBASE-22180](https://issues.apache.org/jira/browse/HBASE-22180) | Make TestBlockEvictionFromClient.testBlockRefCountAfterSplits more stable | Major | test | +| [HBASE-22179](https://issues.apache.org/jira/browse/HBASE-22179) | Fix RawAsyncHBaseAdmin.getCompactionState | Major | Admin, asyncclient | +| [HBASE-22177](https://issues.apache.org/jira/browse/HBASE-22177) | Do not recreate IOException in RawAsyncHBaseAdmin.adminCall | Major | Admin, asyncclient | +| [HBASE-22070](https://issues.apache.org/jira/browse/HBASE-22070) | Checking restoreDir in RestoreSnapshotHelper | Minor | snapshots | +| [HBASE-20912](https://issues.apache.org/jira/browse/HBASE-20912) | Add import order config in dev support for eclipse | Major | . | +| [HBASE-22133](https://issues.apache.org/jira/browse/HBASE-22133) | Forward port HBASE-22073 "/rits.jsp throws an exception if no procedure" to branch-2.2+ | Major | UI | +| [HBASE-20911](https://issues.apache.org/jira/browse/HBASE-20911) | correct Swtich/case indentation in formatter template for eclipse | Major | . | +| [HBASE-21688](https://issues.apache.org/jira/browse/HBASE-21688) | Address WAL filesystem issues | Major | Filesystem Integration, wal | +| [HBASE-22121](https://issues.apache.org/jira/browse/HBASE-22121) | AsyncAdmin can not deal with non default meta replica | Major | Admin, asyncclient, Client | +| [HBASE-22115](https://issues.apache.org/jira/browse/HBASE-22115) | HBase RPC aspires to grow an infinite tree of trace scopes; some other places are also unsafe | Critical | . | +| [HBASE-22123](https://issues.apache.org/jira/browse/HBASE-22123) | REST gateway reports Insufficient permissions exceptions as 404 Not Found | Minor | REST | +| [HBASE-21135](https://issues.apache.org/jira/browse/HBASE-21135) | Build fails on windows as it fails to parse windows path during license check | Major | build | +| [HBASE-21781](https://issues.apache.org/jira/browse/HBASE-21781) | list\_deadservers elapsed time is incorrect | Major | shell | +| [HBASE-22100](https://issues.apache.org/jira/browse/HBASE-22100) | False positive for error prone warnings in pre commit job | Minor | build | +| [HBASE-22098](https://issues.apache.org/jira/browse/HBASE-22098) | Backport HBASE-18667 "Disable error-prone for hbase-protocol-shaded" to branch-2 | Major | build | +| [HBASE-20662](https://issues.apache.org/jira/browse/HBASE-20662) | Increasing space quota on a violated table does not remove SpaceViolationPolicy.DISABLE enforcement | Major | . | +| [HBASE-22057](https://issues.apache.org/jira/browse/HBASE-22057) | Impose upper-bound on size of ZK ops sent in a single multi() | Major | . | +| [HBASE-22074](https://issues.apache.org/jira/browse/HBASE-22074) | Should use procedure store to persist the state in reportRegionStateTransition | Blocker | amv2, proc-v2 | +| [HBASE-21619](https://issues.apache.org/jira/browse/HBASE-21619) | Fix warning message caused by incorrect ternary operator evaluation | Trivial | . | +| [HBASE-22095](https://issues.apache.org/jira/browse/HBASE-22095) | Taking a snapshot fails in local mode | Major | . | +| [HBASE-22061](https://issues.apache.org/jira/browse/HBASE-22061) | SplitTableRegionProcedure should hold the lock of its daughter regions | Major | . | +| [HBASE-22045](https://issues.apache.org/jira/browse/HBASE-22045) | Mutable range histogram reports incorrect outliers | Major | . | +| [HBASE-21736](https://issues.apache.org/jira/browse/HBASE-21736) | Remove the server from online servers before scheduling SCP for it in hbck | Major | hbck2, test | +| [HBASE-22011](https://issues.apache.org/jira/browse/HBASE-22011) | ThriftUtilities.getFromThrift should set filter when not set columns | Major | . | +| [HBASE-21990](https://issues.apache.org/jira/browse/HBASE-21990) | puppycrawl checkstyle dtds 404... moved to sourceforge | Major | build | +| [HBASE-22010](https://issues.apache.org/jira/browse/HBASE-22010) | docs on upgrade from 2.0,2.1 -\> 2.2 renders incorrectly | Minor | documentation | +| [HBASE-22006](https://issues.apache.org/jira/browse/HBASE-22006) | Fix branch-2.1 findbugs warning; causes nightly show as failed. | Major | . | +| [HBASE-21960](https://issues.apache.org/jira/browse/HBASE-21960) | RESTServletContainer not configured for REST Jetty server | Blocker | REST | +| [HBASE-21915](https://issues.apache.org/jira/browse/HBASE-21915) | FileLink$FileLinkInputStream doesn't implement CanUnbuffer | Major | Filesystem Integration | +| [HBASE-21565](https://issues.apache.org/jira/browse/HBASE-21565) | Delete dead server from dead server list too early leads to concurrent Server Crash Procedures(SCP) for a same server | Critical | . | +| [HBASE-21740](https://issues.apache.org/jira/browse/HBASE-21740) | NPE happens while shutdown the RS | Major | . | +| [HBASE-21866](https://issues.apache.org/jira/browse/HBASE-21866) | Do not move the table to null rsgroup when creating an existing table | Major | proc-v2, rsgroup | +| [HBASE-21983](https://issues.apache.org/jira/browse/HBASE-21983) | Should track the scan metrics in AsyncScanSingleRegionRpcRetryingCaller if scan metrics is enabled | Major | asyncclient, Client | +| [HBASE-21980](https://issues.apache.org/jira/browse/HBASE-21980) | Fix typo in AbstractTestAsyncTableRegionReplicasRead | Major | test | +| [HBASE-21487](https://issues.apache.org/jira/browse/HBASE-21487) | Concurrent modify table ops can lead to unexpected results | Major | . | +| [HBASE-20724](https://issues.apache.org/jira/browse/HBASE-20724) | Sometimes some compacted storefiles are still opened after region failover | Critical | . | +| [HBASE-21961](https://issues.apache.org/jira/browse/HBASE-21961) | Infinite loop in AsyncNonMetaRegionLocator if there is only one region and we tried to locate before a non empty row | Critical | asyncclient, Client | +| [HBASE-21943](https://issues.apache.org/jira/browse/HBASE-21943) | The usage of RegionLocations.mergeRegionLocations is wrong for async client | Critical | asyncclient, Client | +| [HBASE-21947](https://issues.apache.org/jira/browse/HBASE-21947) | TestShell is broken after we remove the jackson dependencies | Major | dependencies, shell | +| [HBASE-21942](https://issues.apache.org/jira/browse/HBASE-21942) | [UI] requests per second is incorrect in rsgroup page(rsgroup.jsp) | Minor | . | +| [HBASE-21922](https://issues.apache.org/jira/browse/HBASE-21922) | BloomContext#sanityCheck may failed when use ROWPREFIX\_DELIMITED bloom filter | Major | . | +| [HBASE-21929](https://issues.apache.org/jira/browse/HBASE-21929) | The checks at the end of TestRpcClientLeaks are not executed | Major | test | +| [HBASE-21938](https://issues.apache.org/jira/browse/HBASE-21938) | Add a new ClusterMetrics.Option SERVERS\_NAME to only return the live region servers's name without metrics | Major | . | +| [HBASE-21928](https://issues.apache.org/jira/browse/HBASE-21928) | Deprecated HConstants.META\_QOS | Major | Client, rpc | +| [HBASE-21899](https://issues.apache.org/jira/browse/HBASE-21899) | Fix missing variables in slf4j Logger | Trivial | logging | +| [HBASE-21910](https://issues.apache.org/jira/browse/HBASE-21910) | The nonce implementation is wrong for AsyncTable | Critical | asyncclient, Client | +| [HBASE-21900](https://issues.apache.org/jira/browse/HBASE-21900) | Infinite loop in AsyncMetaRegionLocator if we can not get the location for meta | Major | asyncclient, Client | +| [HBASE-21890](https://issues.apache.org/jira/browse/HBASE-21890) | Use execute instead of submit to submit a task in RemoteProcedureDispatcher | Critical | proc-v2 | +| [HBASE-21889](https://issues.apache.org/jira/browse/HBASE-21889) | Use thrift 0.12.0 when build thrift by compile-thrift profile | Major | . | +| [HBASE-21785](https://issues.apache.org/jira/browse/HBASE-21785) | master reports open regions as RITs and also messes up rit age metric | Major | . | +| [HBASE-21854](https://issues.apache.org/jira/browse/HBASE-21854) | Race condition in TestProcedureSkipPersistence | Minor | proc-v2 | +| [HBASE-21862](https://issues.apache.org/jira/browse/HBASE-21862) | IPCUtil.wrapException should keep the original exception types for all the connection exceptions | Blocker | . | +| [HBASE-18484](https://issues.apache.org/jira/browse/HBASE-18484) | VerifyRep by snapshot does not work when Yarn / SourceHBase / PeerHBase located in different HDFS clusters | Major | Replication | +| [HBASE-21775](https://issues.apache.org/jira/browse/HBASE-21775) | The BufferedMutator doesn't ever refresh region location cache | Major | Client | +| [HBASE-21843](https://issues.apache.org/jira/browse/HBASE-21843) | RegionGroupingProvider breaks the meta wal file name pattern which may cause data loss for meta region | Blocker | wal | +| [HBASE-21795](https://issues.apache.org/jira/browse/HBASE-21795) | Client application may get stuck (time bound) if a table modify op is called immediately after split op | Critical | amv2 | +| [HBASE-21840](https://issues.apache.org/jira/browse/HBASE-21840) | TestHRegionWithInMemoryFlush fails with NPE | Blocker | test | +| [HBASE-21811](https://issues.apache.org/jira/browse/HBASE-21811) | region can be opened on two servers due to race condition with procedures and server reports | Blocker | amv2 | +| [HBASE-21644](https://issues.apache.org/jira/browse/HBASE-21644) | Modify table procedure runs infinitely for a table having region replication \> 1 | Critical | Admin | +| [HBASE-21733](https://issues.apache.org/jira/browse/HBASE-21733) | SnapshotQuotaObserverChore should only fetch space quotas | Major | . | +| [HBASE-21699](https://issues.apache.org/jira/browse/HBASE-21699) | Create table failed when using SPLITS\_FILE =\> 'splits.txt' | Blocker | Client, shell | +| [HBASE-21535](https://issues.apache.org/jira/browse/HBASE-21535) | Zombie Master detector is not working | Critical | master | +| [HBASE-21770](https://issues.apache.org/jira/browse/HBASE-21770) | Should deal with meta table in HRegionLocator.getAllRegionLocations | Major | Client | +| [HBASE-21754](https://issues.apache.org/jira/browse/HBASE-21754) | ReportRegionStateTransitionRequest should be executed in priority executor | Major | . | +| [HBASE-21475](https://issues.apache.org/jira/browse/HBASE-21475) | Put mutation (having TTL set) added via co-processor is retrieved even after TTL expires | Major | Coprocessors | +| [HBASE-21749](https://issues.apache.org/jira/browse/HBASE-21749) | RS UI may throw NPE and make rs-status page inaccessible with multiwal and replication | Major | Replication, UI | +| [HBASE-21746](https://issues.apache.org/jira/browse/HBASE-21746) | Fix two concern cases in RegionMover | Major | . | +| [HBASE-21732](https://issues.apache.org/jira/browse/HBASE-21732) | Should call toUpperCase before using Enum.valueOf in some methods for ColumnFamilyDescriptor | Critical | Client | +| [HBASE-21704](https://issues.apache.org/jira/browse/HBASE-21704) | The implementation of DistributedHBaseCluster.getServerHoldingRegion is incorrect | Major | . | +| [HBASE-20917](https://issues.apache.org/jira/browse/HBASE-20917) | MetaTableMetrics#stop references uninitialized requestsMap for non-meta region | Major | meta, metrics | +| [HBASE-21639](https://issues.apache.org/jira/browse/HBASE-21639) | maxHeapUsage value not read properly from config during EntryBuffers initialization | Minor | . | +| [HBASE-21225](https://issues.apache.org/jira/browse/HBASE-21225) | Having RPC & Space quota on a table/Namespace doesn't allow space quota to be removed using 'NONE' | Major | . | +| [HBASE-21707](https://issues.apache.org/jira/browse/HBASE-21707) | Fix warnings in hbase-rsgroup module and also make the UTs more stable | Major | Region Assignment, rsgroup | +| [HBASE-20220](https://issues.apache.org/jira/browse/HBASE-20220) | [RSGroup] Check if table exists in the cluster before moving it to the specified regionserver group | Major | rsgroup | +| [HBASE-21691](https://issues.apache.org/jira/browse/HBASE-21691) | Fix flaky test TestRecoveredEdits | Major | . | +| [HBASE-21695](https://issues.apache.org/jira/browse/HBASE-21695) | Fix flaky test TestRegionServerAbortTimeout | Major | . | +| [HBASE-21614](https://issues.apache.org/jira/browse/HBASE-21614) | RIT recovery with ServerCrashProcedure doesn't account for all regions | Critical | amv2 | +| [HBASE-21618](https://issues.apache.org/jira/browse/HBASE-21618) | Scan with the same startRow(inclusive=true) and stopRow(inclusive=false) returns one result | Critical | Client | +| [HBASE-21683](https://issues.apache.org/jira/browse/HBASE-21683) | Reset readsEnabled flag after successfully flushing the primary region | Critical | read replicas | +| [HBASE-21630](https://issues.apache.org/jira/browse/HBASE-21630) | [shell] Define ENDKEY == STOPROW (we have ENDROW) | Trivial | shell | +| [HBASE-21547](https://issues.apache.org/jira/browse/HBASE-21547) | Precommit uses master flaky list for other branches | Major | test | +| [HBASE-21660](https://issues.apache.org/jira/browse/HBASE-21660) | Apply the cell to right memstore for increment/append operation | Major | . | +| [HBASE-21646](https://issues.apache.org/jira/browse/HBASE-21646) | Flakey TestTableSnapshotInputFormat; DisableTable not completing... | Major | test | +| [HBASE-21545](https://issues.apache.org/jira/browse/HBASE-21545) | NEW\_VERSION\_BEHAVIOR breaks Get/Scan with specified columns | Major | API | +| [HBASE-21629](https://issues.apache.org/jira/browse/HBASE-21629) | draining\_servers.rb is broken | Major | scripts | +| [HBASE-21621](https://issues.apache.org/jira/browse/HBASE-21621) | Reversed scan does not return expected number of rows | Critical | Scanners | +| [HBASE-21620](https://issues.apache.org/jira/browse/HBASE-21620) | Problem in scan query when using more than one column prefix filter in some cases. | Major | Scanners | +| [HBASE-21610](https://issues.apache.org/jira/browse/HBASE-21610) | numOpenConnections metric is set to -1 when zero server channel exist | Minor | metrics | +| [HBASE-21498](https://issues.apache.org/jira/browse/HBASE-21498) | Master OOM when SplitTableRegionProcedure new CacheConfig and instantiate a new BlockCache | Major | . | +| [HBASE-21592](https://issues.apache.org/jira/browse/HBASE-21592) | quota.addGetResult(r) throw NPE | Major | . | +| [HBASE-21589](https://issues.apache.org/jira/browse/HBASE-21589) | TestCleanupMetaWAL fails | Blocker | test, wal | +| [HBASE-21575](https://issues.apache.org/jira/browse/HBASE-21575) | memstore above high watermark message is logged too much | Minor | logging, regionserver | +| [HBASE-21582](https://issues.apache.org/jira/browse/HBASE-21582) | If call HBaseAdmin#snapshotAsync but forget call isSnapshotFinished, then SnapshotHFileCleaner will skip to run every time | Major | . | +| [HBASE-21568](https://issues.apache.org/jira/browse/HBASE-21568) | Disable use of BlockCache for LoadIncrementalHFiles | Major | Client | +| [HBASE-21453](https://issues.apache.org/jira/browse/HBASE-21453) | Convert ReadOnlyZKClient to DEBUG instead of INFO | Major | logging, Zookeeper | +| [HBASE-21559](https://issues.apache.org/jira/browse/HBASE-21559) | The RestoreSnapshotFromClientTestBase related UT are flaky | Major | . | +| [HBASE-21551](https://issues.apache.org/jira/browse/HBASE-21551) | Memory leak when use scan with STREAM at server side | Blocker | regionserver | +| [HBASE-21550](https://issues.apache.org/jira/browse/HBASE-21550) | Add a new method preCreateTableRegionInfos for MasterObserver which allows CPs to modify the TableDescriptor | Major | Coprocessors | +| [HBASE-21479](https://issues.apache.org/jira/browse/HBASE-21479) | Individual tests in TestHRegionReplayEvents class are failing | Major | . | +| [HBASE-21518](https://issues.apache.org/jira/browse/HBASE-21518) | TestMasterFailoverWithProcedures is flaky | Major | . | +| [HBASE-21504](https://issues.apache.org/jira/browse/HBASE-21504) | If enable FIFOCompactionPolicy, a compaction may write a "empty" hfile whose maxTimeStamp is long max. This kind of hfile will never be archived. | Critical | Compaction | +| [HBASE-21300](https://issues.apache.org/jira/browse/HBASE-21300) | Fix the wrong reference file path when restoring snapshots for tables with MOB columns | Major | . | +| [HBASE-21507](https://issues.apache.org/jira/browse/HBASE-21507) | Compaction failed when execute AbstractMultiFileWriter.beforeShipped() method | Major | Compaction, regionserver | +| [HBASE-21387](https://issues.apache.org/jira/browse/HBASE-21387) | Race condition surrounding in progress snapshot handling in snapshot cache leads to loss of snapshot files | Major | snapshots | +| [HBASE-21503](https://issues.apache.org/jira/browse/HBASE-21503) | Replication normal source can get stuck due potential race conditions between source wal reader and wal provider initialization threads. | Blocker | Replication | +| [HBASE-21466](https://issues.apache.org/jira/browse/HBASE-21466) | WALProcedureStore uses wrong FileSystem if wal.dir is not under rootdir | Major | . | +| [HBASE-21445](https://issues.apache.org/jira/browse/HBASE-21445) | CopyTable by bulkload will write hfile into yarn's HDFS | Major | mapreduce | +| [HBASE-21437](https://issues.apache.org/jira/browse/HBASE-21437) | Bypassed procedure throw IllegalArgumentException when its state is WAITING\_TIMEOUT | Major | . | +| [HBASE-21439](https://issues.apache.org/jira/browse/HBASE-21439) | StochasticLoadBalancer RegionLoads aren’t being used in RegionLoad cost functions | Major | Balancer | +| [HBASE-20604](https://issues.apache.org/jira/browse/HBASE-20604) | ProtobufLogReader#readNext can incorrectly loop to the same position in the stream until the the WAL is rolled | Critical | Replication, wal | +| [HBASE-21247](https://issues.apache.org/jira/browse/HBASE-21247) | Custom Meta WAL Provider doesn't default to custom WAL Provider whose configuration value is outside the enums in Providers | Major | wal | +| [HBASE-21430](https://issues.apache.org/jira/browse/HBASE-21430) | [hbase-connectors] Move hbase-spark\* modules to hbase-connectors repo | Major | hbase-connectors, spark | +| [HBASE-21438](https://issues.apache.org/jira/browse/HBASE-21438) | TestAdmin2#testGetProcedures fails due to FailedProcedure inaccessible | Major | . | +| [HBASE-21425](https://issues.apache.org/jira/browse/HBASE-21425) | 2.1.1 fails to start over 1.x data; namespace not assigned | Critical | amv2 | +| [HBASE-21407](https://issues.apache.org/jira/browse/HBASE-21407) | Resolve NPE in backup Master UI | Minor | UI | +| [HBASE-21422](https://issues.apache.org/jira/browse/HBASE-21422) | NPE in TestMergeTableRegionsProcedure.testMergeWithoutPONR | Major | proc-v2, test | +| [HBASE-21424](https://issues.apache.org/jira/browse/HBASE-21424) | Change flakies and nightlies so scheduled less often | Major | build | +| [HBASE-21417](https://issues.apache.org/jira/browse/HBASE-21417) | Pre commit build is broken due to surefire plugin crashes | Critical | build | +| [HBASE-21371](https://issues.apache.org/jira/browse/HBASE-21371) | Hbase unable to compile against Hadoop trunk (3.3.0-SNAPSHOT) due to license error | Major | . | +| [HBASE-21391](https://issues.apache.org/jira/browse/HBASE-21391) | RefreshPeerProcedure should also wait master initialized before executing | Major | Replication | +| [HBASE-21342](https://issues.apache.org/jira/browse/HBASE-21342) | FileSystem in use may get closed by other bulk load call in secure bulkLoad | Major | . | +| [HBASE-21349](https://issues.apache.org/jira/browse/HBASE-21349) | Cluster is going down but CatalogJanitor and Normalizer try to run and fail noisely | Minor | . | +| [HBASE-21356](https://issues.apache.org/jira/browse/HBASE-21356) | bulkLoadHFile API should ensure that rs has the source hfile's write permission | Major | . | +| [HBASE-21355](https://issues.apache.org/jira/browse/HBASE-21355) | HStore's storeSize is calculated repeatedly which causing the confusing region split | Blocker | regionserver | +| [HBASE-21334](https://issues.apache.org/jira/browse/HBASE-21334) | TestMergeTableRegionsProcedure is flakey | Major | amv2, proc-v2, test | +| [HBASE-21178](https://issues.apache.org/jira/browse/HBASE-21178) | [BC break] : Get and Scan operation with a custom converter\_class not working | Critical | shell | +| [HBASE-21200](https://issues.apache.org/jira/browse/HBASE-21200) | Memstore flush doesn't finish because of seekToPreviousRow() in memstore scanner. | Critical | Scanners | +| [HBASE-21292](https://issues.apache.org/jira/browse/HBASE-21292) | IdLock.getLockEntry() may hang if interrupted | Major | . | +| [HBASE-21335](https://issues.apache.org/jira/browse/HBASE-21335) | Change the default wait time of HBCK2 tool | Critical | . | +| [HBASE-21291](https://issues.apache.org/jira/browse/HBASE-21291) | Add a test for bypassing stuck state-machine procedures | Major | . | +| [HBASE-21055](https://issues.apache.org/jira/browse/HBASE-21055) | NullPointerException when balanceOverall() but server balance info is null | Major | Balancer | +| [HBASE-21327](https://issues.apache.org/jira/browse/HBASE-21327) | Fix minor logging issue where we don't report servername if no associated SCP | Trivial | amv2 | +| [HBASE-21320](https://issues.apache.org/jira/browse/HBASE-21320) | [canary] Cleanup of usage and add commentary | Major | canary | +| [HBASE-21266](https://issues.apache.org/jira/browse/HBASE-21266) | Not running balancer because processing dead regionservers, but empty dead rs list | Major | . | +| [HBASE-21260](https://issues.apache.org/jira/browse/HBASE-21260) | The whole balancer plans might be aborted if there are more than one plans to move a same region | Major | Balancer, master | +| [HBASE-21280](https://issues.apache.org/jira/browse/HBASE-21280) | Add anchors for each heading in UI | Trivial | UI, Usability | +| [HBASE-20764](https://issues.apache.org/jira/browse/HBASE-20764) | build broken when latest commit is gpg signed | Critical | build | +| [HBASE-18549](https://issues.apache.org/jira/browse/HBASE-18549) | Unclaimed replication queues can go undetected | Critical | Replication | +| [HBASE-21248](https://issues.apache.org/jira/browse/HBASE-21248) | Implement exponential backoff when retrying for ModifyPeerProcedure | Major | proc-v2, Replication | +| [HBASE-21196](https://issues.apache.org/jira/browse/HBASE-21196) | HTableMultiplexer clears the meta cache after every put operation | Critical | Performance | +| [HBASE-19418](https://issues.apache.org/jira/browse/HBASE-19418) | RANGE\_OF\_DELAY in PeriodicMemstoreFlusher should be configurable. | Minor | . | +| [HBASE-18451](https://issues.apache.org/jira/browse/HBASE-18451) | PeriodicMemstoreFlusher should inspect the queue before adding a delayed flush request | Major | regionserver | +| [HBASE-21228](https://issues.apache.org/jira/browse/HBASE-21228) | Memory leak since AbstractFSWAL caches Thread object and never clean later | Critical | wal | +| [HBASE-20766](https://issues.apache.org/jira/browse/HBASE-20766) | Verify Replication Tool Has Typo "remove cluster" | Trivial | . | +| [HBASE-21232](https://issues.apache.org/jira/browse/HBASE-21232) | Show table state in Tables view on Master home page | Major | Operability, UI | +| [HBASE-21212](https://issues.apache.org/jira/browse/HBASE-21212) | Wrong flush time when update flush metric | Minor | . | +| [HBASE-21208](https://issues.apache.org/jira/browse/HBASE-21208) | Bytes#toShort doesn't work without unsafe | Critical | . | +| [HBASE-20704](https://issues.apache.org/jira/browse/HBASE-20704) | Sometimes some compacted storefiles are not archived on region close | Critical | Compaction | +| [HBASE-21203](https://issues.apache.org/jira/browse/HBASE-21203) | TestZKMainServer#testCommandLineWorks won't pass with default 4lw whitelist | Minor | test, Zookeeper | +| [HBASE-21102](https://issues.apache.org/jira/browse/HBASE-21102) | ServerCrashProcedure should select target server where no other replicas exist for the current region | Major | Region Assignment | +| [HBASE-21206](https://issues.apache.org/jira/browse/HBASE-21206) | Scan with batch size may return incomplete cells | Critical | Scanners | +| [HBASE-21182](https://issues.apache.org/jira/browse/HBASE-21182) | Failed to execute start-hbase.sh | Major | . | +| [HBASE-21179](https://issues.apache.org/jira/browse/HBASE-21179) | Fix the number of actions in responseTooSlow log | Major | logging, rpc | +| [HBASE-21174](https://issues.apache.org/jira/browse/HBASE-21174) | [REST] Failed to parse empty qualifier in TableResource#getScanResource | Major | REST | +| [HBASE-21181](https://issues.apache.org/jira/browse/HBASE-21181) | Use the same filesystem for wal archive directory and wal directory | Major | . | +| [HBASE-21021](https://issues.apache.org/jira/browse/HBASE-21021) | Result returned by Append operation should be ordered | Major | . | +| [HBASE-21173](https://issues.apache.org/jira/browse/HBASE-21173) | Remove the duplicate HRegion#close in TestHRegion | Minor | test | +| [HBASE-21144](https://issues.apache.org/jira/browse/HBASE-21144) | AssignmentManager.waitForAssignment is not stable | Major | amv2, test | +| [HBASE-21143](https://issues.apache.org/jira/browse/HBASE-21143) | Update findbugs-maven-plugin to 3.0.4 | Major | pom | +| [HBASE-21171](https://issues.apache.org/jira/browse/HBASE-21171) | [amv2] Tool to parse a directory of MasterProcWALs standalone | Major | amv2, test | +| [HBASE-21052](https://issues.apache.org/jira/browse/HBASE-21052) | After restoring a snapshot, table.jsp page for the table gets stuck | Major | snapshots | +| [HBASE-21001](https://issues.apache.org/jira/browse/HBASE-21001) | ReplicationObserver fails to load in HBase 2.0.0 | Major | . | +| [HBASE-20741](https://issues.apache.org/jira/browse/HBASE-20741) | Split of a region with replicas creates all daughter regions and its replica in same server | Major | read replicas | +| [HBASE-21127](https://issues.apache.org/jira/browse/HBASE-21127) | TableRecordReader need to handle cursor result too | Major | . | +| [HBASE-20892](https://issues.apache.org/jira/browse/HBASE-20892) | [UI] Start / End keys are empty on table.jsp | Major | . | +| [HBASE-21136](https://issues.apache.org/jira/browse/HBASE-21136) | NPE in MetricsTableSourceImpl.updateFlushTime | Major | metrics | +| [HBASE-21132](https://issues.apache.org/jira/browse/HBASE-21132) | return wrong result in rest multiget | Major | . | +| [HBASE-21128](https://issues.apache.org/jira/browse/HBASE-21128) | TestAsyncRegionAdminApi.testAssignRegionAndUnassignRegion is broken | Major | test | +| [HBASE-20940](https://issues.apache.org/jira/browse/HBASE-20940) | HStore.cansplit should not allow split to happen if it has references | Major | . | +| [HBASE-21084](https://issues.apache.org/jira/browse/HBASE-21084) | When cloning a snapshot including a split parent region, the split parent region of the cloned table will be online | Major | snapshots | +| [HBASE-20968](https://issues.apache.org/jira/browse/HBASE-20968) | list\_procedures\_test fails due to no matching regex | Major | shell, test | +| [HBASE-21030](https://issues.apache.org/jira/browse/HBASE-21030) | Correct javadoc for append operation | Minor | documentation | +| [HBASE-21088](https://issues.apache.org/jira/browse/HBASE-21088) | HStoreFile should be closed in HStore#hasReferences | Major | . | +| [HBASE-20890](https://issues.apache.org/jira/browse/HBASE-20890) | PE filterScan seems to be stuck forever | Minor | . | +| [HBASE-20772](https://issues.apache.org/jira/browse/HBASE-20772) | Controlled shutdown fills Master log with the disturbing message "No matching procedure found for rit=OPEN, location=ZZZZ, table=YYYYY, region=XXXX transition to CLOSED | Major | logging | +| [HBASE-20978](https://issues.apache.org/jira/browse/HBASE-20978) | [amv2] Worker terminating UNNATURALLY during MoveRegionProcedure | Critical | amv2 | +| [HBASE-21078](https://issues.apache.org/jira/browse/HBASE-21078) | [amv2] CODE-BUG NPE in RTP doing Unassign | Major | amv2 | +| [HBASE-21113](https://issues.apache.org/jira/browse/HBASE-21113) | Apply the branch-2 version of HBASE-21095, The timeout retry logic for several procedures are broken after master restarts | Major | amv2 | +| [HBASE-21101](https://issues.apache.org/jira/browse/HBASE-21101) | Remove the waitUntilAllRegionsAssigned call after split in TestTruncateTableProcedure | Major | test | +| [HBASE-19008](https://issues.apache.org/jira/browse/HBASE-19008) | Add missing equals or hashCode method(s) to stock Filter implementations | Major | . | +| [HBASE-20614](https://issues.apache.org/jira/browse/HBASE-20614) | REST scan API with incorrect filter text file throws HTTP 503 Service Unavailable error | Minor | REST | +| [HBASE-21041](https://issues.apache.org/jira/browse/HBASE-21041) | Memstore's heap size will be decreased to minus zero after flush | Major | . | +| [HBASE-21031](https://issues.apache.org/jira/browse/HBASE-21031) | Memory leak if replay edits failed during region opening | Major | . | +| [HBASE-20666](https://issues.apache.org/jira/browse/HBASE-20666) | Unsuccessful table creation leaves entry in hbase:rsgroup table | Minor | . | +| [HBASE-21032](https://issues.apache.org/jira/browse/HBASE-21032) | ScanResponses contain only one cell each | Major | Performance, Scanners | +| [HBASE-20705](https://issues.apache.org/jira/browse/HBASE-20705) | Having RPC Quota on a table prevents Space quota to be recreated/removed | Major | . | +| [HBASE-21058](https://issues.apache.org/jira/browse/HBASE-21058) | Nightly tests for branches 1 fail to build ref guide | Major | documentation | +| [HBASE-21074](https://issues.apache.org/jira/browse/HBASE-21074) | JDK7 branches need to pass "-Dhttps.protocols=TLSv1.2" to maven when building | Major | build, community, test | +| [HBASE-21062](https://issues.apache.org/jira/browse/HBASE-21062) | WALFactory has misleading notion of "default" | Major | wal | +| [HBASE-21047](https://issues.apache.org/jira/browse/HBASE-21047) | Object creation of StoreFileScanner thru constructor and close may leave refCount to -1 | Major | . | +| [HBASE-21005](https://issues.apache.org/jira/browse/HBASE-21005) | Maven site configuration causes downstream projects to get a directory named ${project.basedir} | Minor | build | +| [HBASE-21007](https://issues.apache.org/jira/browse/HBASE-21007) | Memory leak in HBase rest server | Critical | REST | +| [HBASE-20794](https://issues.apache.org/jira/browse/HBASE-20794) | CreateTable operation does not log its landing at the master nor the initiator at INFO level | Major | logging | +| [HBASE-20538](https://issues.apache.org/jira/browse/HBASE-20538) | Upgrade our hadoop versions to 2.7.7 and 3.0.3 | Critical | java, security | +| [HBASE-20927](https://issues.apache.org/jira/browse/HBASE-20927) | RSGroupAdminEndpoint doesn't handle clearing dead servers if they are not processed yet. | Major | . | +| [HBASE-20932](https://issues.apache.org/jira/browse/HBASE-20932) | Effective MemStoreSize::hashCode() | Major | . | +| [HBASE-20928](https://issues.apache.org/jira/browse/HBASE-20928) | Rewrite calculation of midpoint in binarySearch functions to prevent overflow | Minor | io | +| [HBASE-20565](https://issues.apache.org/jira/browse/HBASE-20565) | ColumnRangeFilter combined with ColumnPaginationFilter can produce incorrect result since 1.4 | Major | Filters | +| [HBASE-20908](https://issues.apache.org/jira/browse/HBASE-20908) | Infinite loop on regionserver if region replica are reduced | Major | read replicas | +| [HBASE-19893](https://issues.apache.org/jira/browse/HBASE-19893) | restore\_snapshot is broken in master branch when region splits | Critical | snapshots | +| [HBASE-20870](https://issues.apache.org/jira/browse/HBASE-20870) | Wrong HBase root dir in ITBLL's Search Tool | Minor | integration tests | +| [HBASE-20901](https://issues.apache.org/jira/browse/HBASE-20901) | Reducing region replica has no effect | Major | . | +| [HBASE-6028](https://issues.apache.org/jira/browse/HBASE-6028) | Implement a cancel for in-progress compactions | Minor | regionserver | +| [HBASE-20869](https://issues.apache.org/jira/browse/HBASE-20869) | Endpoint-based Export use incorrect user to write to destination | Major | Coprocessors | +| [HBASE-20879](https://issues.apache.org/jira/browse/HBASE-20879) | Compacting memstore config should handle lower case | Major | . | +| [HBASE-20865](https://issues.apache.org/jira/browse/HBASE-20865) | CreateTableProcedure is stuck in retry loop in CREATE\_TABLE\_WRITE\_FS\_LAYOUT state | Major | amv2 | +| [HBASE-19572](https://issues.apache.org/jira/browse/HBASE-19572) | RegionMover should use the configured default port number and not the one from HConstants | Major | . | +| [HBASE-20697](https://issues.apache.org/jira/browse/HBASE-20697) | Can't cache All region locations of the specify table by calling table.getRegionLocator().getAllRegionLocations() | Major | meta | +| [HBASE-20791](https://issues.apache.org/jira/browse/HBASE-20791) | RSGroupBasedLoadBalancer#setClusterMetrics should pass ClusterMetrics to its internalBalancer | Major | Balancer, rsgroup | +| [HBASE-20770](https://issues.apache.org/jira/browse/HBASE-20770) | WAL cleaner logs way too much; gets clogged when lots of work to do | Critical | logging | + + +### TESTS: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-21963](https://issues.apache.org/jira/browse/HBASE-21963) | Add a script for building and verifying release candidate | Minor | community, scripts | +| [HBASE-21756](https://issues.apache.org/jira/browse/HBASE-21756) | Backport HBASE-21279 (Split TestAdminShell into several tests) to branch-2 | Major | . | +| [HBASE-20136](https://issues.apache.org/jira/browse/HBASE-20136) | TestKeyValue misses ClassRule and Category annotations | Minor | . | +| [HBASE-21261](https://issues.apache.org/jira/browse/HBASE-21261) | Add log4j.properties for hbase-rsgroup tests | Trivial | . | +| [HBASE-21258](https://issues.apache.org/jira/browse/HBASE-21258) | Add resetting of flags for RS Group pre/post hooks in TestRSGroups | Major | . | +| [HBASE-21097](https://issues.apache.org/jira/browse/HBASE-21097) | Flush pressure assertion may fail in testFlushThroughputTuning | Major | regionserver | +| [HBASE-21138](https://issues.apache.org/jira/browse/HBASE-21138) | Close HRegion instance at the end of every test in TestHRegion | Major | . | +| [HBASE-21161](https://issues.apache.org/jira/browse/HBASE-21161) | Enable the test added in HBASE-20741 that was removed accidentally | Minor | . | +| [HBASE-21076](https://issues.apache.org/jira/browse/HBASE-21076) | TestTableResource fails with NPE | Major | REST, test | +| [HBASE-20907](https://issues.apache.org/jira/browse/HBASE-20907) | Fix Intermittent failure on TestProcedurePriority | Major | . | +| [HBASE-20838](https://issues.apache.org/jira/browse/HBASE-20838) | Include hbase-server in precommit test if CommonFSUtils is changed | Major | . | + + +### SUB-TASKS: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-21970](https://issues.apache.org/jira/browse/HBASE-21970) | Document that how to upgrade from 2.0 or 2.1 to 2.2+ | Major | . | +| [HBASE-22357](https://issues.apache.org/jira/browse/HBASE-22357) | Fix remaining Checkstyle issues in hbase-replication | Trivial | Replication | +| [HBASE-22554](https://issues.apache.org/jira/browse/HBASE-22554) | Upgrade to surefire 2.22.2 | Major | test | +| [HBASE-22500](https://issues.apache.org/jira/browse/HBASE-22500) | Modify pom and jenkins jobs for hadoop versions | Blocker | build, hadoop2, hadoop3 | +| [HBASE-22316](https://issues.apache.org/jira/browse/HBASE-22316) | Record the stack trace for current thread in FutureUtils.get | Major | asyncclient, Client | +| [HBASE-22326](https://issues.apache.org/jira/browse/HBASE-22326) | Fix Checkstyle errors in hbase-examples | Minor | . | +| [HBASE-22327](https://issues.apache.org/jira/browse/HBASE-22327) | Fix remaining Checkstyle issues in hbase-hadoop-compat | Trivial | . | +| [HBASE-22478](https://issues.apache.org/jira/browse/HBASE-22478) | Add jackson dependency for hbase-http module | Major | build, dependencies | +| [HBASE-22445](https://issues.apache.org/jira/browse/HBASE-22445) | Add file info when throw exceptions in HFileReaderImpl | Major | . | +| [HBASE-22447](https://issues.apache.org/jira/browse/HBASE-22447) | Check refCount before free block in BucketCache | Major | BucketCache | +| [HBASE-22400](https://issues.apache.org/jira/browse/HBASE-22400) | Remove the adapter code in async fs implementation for hadoop-2.7.x | Major | wal | +| [HBASE-22430](https://issues.apache.org/jira/browse/HBASE-22430) | hbase-vote should tee build and test output to console | Trivial | . | +| [HBASE-22429](https://issues.apache.org/jira/browse/HBASE-22429) | hbase-vote download step requires URL to end with '/' | Trivial | . | +| [HBASE-22405](https://issues.apache.org/jira/browse/HBASE-22405) | Update Ref Guide for EOL of Hadoop 2.7 | Major | community, documentation | +| [HBASE-22325](https://issues.apache.org/jira/browse/HBASE-22325) | AsyncRpcRetryingCaller will not schedule retry if we hit a NotServingRegionException but there is no TableName provided | Major | asyncclient, Client | +| [HBASE-22322](https://issues.apache.org/jira/browse/HBASE-22322) | Use special pause for CallQueueTooBigException | Major | asyncclient, Client | +| [HBASE-22317](https://issues.apache.org/jira/browse/HBASE-22317) | Support reading from meta replicas | Major | asyncclient, read replicas | +| [HBASE-22261](https://issues.apache.org/jira/browse/HBASE-22261) | Make use of ClusterStatusListener for async client | Major | asyncclient | +| [HBASE-22267](https://issues.apache.org/jira/browse/HBASE-22267) | Implement client push back for async client | Major | asyncclient | +| [HBASE-19763](https://issues.apache.org/jira/browse/HBASE-19763) | Fix Checkstyle errors in hbase-procedure | Minor | . | +| [HBASE-22244](https://issues.apache.org/jira/browse/HBASE-22244) | Make use of MetricsConnection in async client | Major | asyncclient, metrics | +| [HBASE-22196](https://issues.apache.org/jira/browse/HBASE-22196) | Split TestRestartCluster | Major | test | +| [HBASE-22117](https://issues.apache.org/jira/browse/HBASE-22117) | Move hasPermission/checkPermissions from region server to master | Major | . | +| [HBASE-21886](https://issues.apache.org/jira/browse/HBASE-21886) | Run ITBLL for branch-2.2 | Major | . | +| [HBASE-22155](https://issues.apache.org/jira/browse/HBASE-22155) | Move 2.2.0 on to hbase-thirdparty-2.2.0 | Major | thirdparty | +| [HBASE-22153](https://issues.apache.org/jira/browse/HBASE-22153) | Fix the flaky TestRestartCluster | Major | test | +| [HBASE-22152](https://issues.apache.org/jira/browse/HBASE-22152) | Create a jenkins file for yetus to processing GitHub PR | Major | build | +| [HBASE-22158](https://issues.apache.org/jira/browse/HBASE-22158) | RawAsyncHBaseAdmin.getTableSplits should filter out none default replicas | Major | Admin | +| [HBASE-22157](https://issues.apache.org/jira/browse/HBASE-22157) | Include the cause when constructing RestoreSnapshotException in restoreSnapshot | Major | Admin | +| [HBASE-22141](https://issues.apache.org/jira/browse/HBASE-22141) | Fix TestAsyncDecommissionAdminApi | Major | test | +| [HBASE-22135](https://issues.apache.org/jira/browse/HBASE-22135) | AsyncAdmin will not refresh master address | Major | Admin, asyncclient, Client | +| [HBASE-22101](https://issues.apache.org/jira/browse/HBASE-22101) | AsyncAdmin.isTableAvailable should not throw TableNotFoundException | Major | Admin, asyncclient, Client | +| [HBASE-22094](https://issues.apache.org/jira/browse/HBASE-22094) | Throw TableNotFoundException if table not exists in AsyncAdmin.compact | Major | Admin | +| [HBASE-21911](https://issues.apache.org/jira/browse/HBASE-21911) | Move getUserPermissions from regionserver to master | Major | . | +| [HBASE-22015](https://issues.apache.org/jira/browse/HBASE-22015) | UserPermission should be annotated as InterfaceAudience.Public | Blocker | . | +| [HBASE-22066](https://issues.apache.org/jira/browse/HBASE-22066) | Add markers to CHANGES.md and RELEASENOTES.md | Major | . | +| [HBASE-22040](https://issues.apache.org/jira/browse/HBASE-22040) | Add mergeRegionsAsync with a List of region names method in AsyncAdmin | Major | Admin, asyncclient, Client | +| [HBASE-22039](https://issues.apache.org/jira/browse/HBASE-22039) | Should add the synchronous parameter for the XXXSwitch method in AsyncAdmin | Major | Admin, asyncclient, Client | +| [HBASE-22022](https://issues.apache.org/jira/browse/HBASE-22022) | nightly fails rat check down in the dev-support/hbase\_nightly\_source-artifact.sh check | Major | . | +| [HBASE-22025](https://issues.apache.org/jira/browse/HBASE-22025) | RAT check fails in nightlies; fails on (old) test data files. | Major | . | +| [HBASE-21977](https://issues.apache.org/jira/browse/HBASE-21977) | Skip replay WAL and update seqid when open regions restored from snapshot | Major | Region Assignment, snapshots | +| [HBASE-21999](https://issues.apache.org/jira/browse/HBASE-21999) | [DEBUG] Exit if git returns empty revision! | Major | build | +| [HBASE-22000](https://issues.apache.org/jira/browse/HBASE-22000) | Deprecated isTableAvailable with splitKeys | Major | asyncclient, Client | +| [HBASE-21949](https://issues.apache.org/jira/browse/HBASE-21949) | Fix flaky test TestHBaseTestingUtility.testMiniZooKeeperWithMultipleClientPorts | Major | . | +| [HBASE-21993](https://issues.apache.org/jira/browse/HBASE-21993) | Set version as 2.2.0 in branch-2.2 in prep for first RC | Major | . | +| [HBASE-21997](https://issues.apache.org/jira/browse/HBASE-21997) | Fix hbase-rest findbugs ST\_WRITE\_TO\_STATIC\_FROM\_INSTANCE\_METHOD complaint | Major | REST | +| [HBASE-21986](https://issues.apache.org/jira/browse/HBASE-21986) | Generate CHANGES.md and RELEASENOTES.md for 2.2.0 | Major | . | +| [HBASE-21972](https://issues.apache.org/jira/browse/HBASE-21972) | Copy master doc into branch-2.2 and edit to make it suit 2.2.0 | Major | . | +| [HBASE-15728](https://issues.apache.org/jira/browse/HBASE-15728) | Add remaining per-table region / store / flush / compaction related metrics | Major | metrics | +| [HBASE-21934](https://issues.apache.org/jira/browse/HBASE-21934) | RemoteProcedureDispatcher should track the ongoing dispatched calls | Blocker | proc-v2 | +| [HBASE-21588](https://issues.apache.org/jira/browse/HBASE-21588) | Procedure v2 wal splitting implementation | Major | . | +| [HBASE-21729](https://issues.apache.org/jira/browse/HBASE-21729) | Extract ProcedureCoordinatorRpcs and ProcedureMemberRpcs from CoordinatedStateManager | Major | . | +| [HBASE-21094](https://issues.apache.org/jira/browse/HBASE-21094) | Remove the explicit timeout config for TestTruncateTableProcedure | Major | test | +| [HBASE-21093](https://issues.apache.org/jira/browse/HBASE-21093) | Move TestCreateTableProcedure.testMRegions to a separated file | Major | test | +| [HBASE-18201](https://issues.apache.org/jira/browse/HBASE-18201) | add UT and docs for DataBlockEncodingTool | Minor | tooling | +| [HBASE-21978](https://issues.apache.org/jira/browse/HBASE-21978) | Should close AsyncRegistry if we fail to get cluster id when creating AsyncConnection | Major | asyncclient, Client | +| [HBASE-21974](https://issues.apache.org/jira/browse/HBASE-21974) | Change Admin#grant/revoke parameter from UserPermission to user and Permission | Major | . | +| [HBASE-21976](https://issues.apache.org/jira/browse/HBASE-21976) | Deal with RetryImmediatelyException for batching request | Major | asyncclient, Client | +| [HBASE-21820](https://issues.apache.org/jira/browse/HBASE-21820) | Implement CLUSTER quota scope | Major | . | +| [HBASE-21962](https://issues.apache.org/jira/browse/HBASE-21962) | Filters do not work in ThriftTable | Major | Thrift | +| [HBASE-21927](https://issues.apache.org/jira/browse/HBASE-21927) | Always fail the locate request when error occur | Major | asyncclient, Client | +| [HBASE-21944](https://issues.apache.org/jira/browse/HBASE-21944) | Validate put for batch operation | Major | asyncclient, Client | +| [HBASE-21945](https://issues.apache.org/jira/browse/HBASE-21945) | Maintain the original order when sending batch request | Major | asyncclient, Client | +| [HBASE-21783](https://issues.apache.org/jira/browse/HBASE-21783) | Support exceed user/table/ns throttle quota if region server has available quota | Major | . | +| [HBASE-21930](https://issues.apache.org/jira/browse/HBASE-21930) | Deal with ScannerResetException when opening region scanner | Major | asyncclient, Client | +| [HBASE-21907](https://issues.apache.org/jira/browse/HBASE-21907) | Should set priority for rpc request | Major | asyncclient, Client | +| [HBASE-21909](https://issues.apache.org/jira/browse/HBASE-21909) | Validate the put instance before executing in AsyncTable.put method | Major | asyncclient, Client | +| [HBASE-21814](https://issues.apache.org/jira/browse/HBASE-21814) | Remove the TODO in AccessControlLists#addUserPermission | Major | . | +| [HBASE-19889](https://issues.apache.org/jira/browse/HBASE-19889) | Revert Workaround: Purge User API building from branch-2 so can make a beta-1 | Major | website | +| [HBASE-21838](https://issues.apache.org/jira/browse/HBASE-21838) | Create a special ReplicationEndpoint just for verifying the WAL entries are fine | Major | Replication, wal | +| [HBASE-21829](https://issues.apache.org/jira/browse/HBASE-21829) | Use FutureUtils.addListener instead of calling whenComplete directly | Major | asyncclient, Client | +| [HBASE-21828](https://issues.apache.org/jira/browse/HBASE-21828) | Make sure we do not return CompletionException when locating region | Major | asyncclient, Client | +| [HBASE-21764](https://issues.apache.org/jira/browse/HBASE-21764) | Size of in-memory compaction thread pool should be configurable | Major | Compaction, in-memory-compaction | +| [HBASE-21809](https://issues.apache.org/jira/browse/HBASE-21809) | Add retry thrift client for ThriftTable/Admin | Major | . | +| [HBASE-21739](https://issues.apache.org/jira/browse/HBASE-21739) | Move grant/revoke from regionserver to master | Major | . | +| [HBASE-21798](https://issues.apache.org/jira/browse/HBASE-21798) | Cut branch-2.2 | Major | . | +| [HBASE-20542](https://issues.apache.org/jira/browse/HBASE-20542) | Better heap utilization for IMC with MSLABs | Major | in-memory-compaction | +| [HBASE-21713](https://issues.apache.org/jira/browse/HBASE-21713) | Support set region server throttle quota | Major | . | +| [HBASE-21761](https://issues.apache.org/jira/browse/HBASE-21761) | Align the methods in RegionLocator and AsyncTableRegionLocator | Major | asyncclient, Client | +| [HBASE-17370](https://issues.apache.org/jira/browse/HBASE-17370) | Fix or provide shell scripts to drain and decommission region server | Major | . | +| [HBASE-21750](https://issues.apache.org/jira/browse/HBASE-21750) | Most of KeyValueUtil#length can be replaced by cell#getSerializedSize for better performance because the latter one has been optimized | Major | . | +| [HBASE-21734](https://issues.apache.org/jira/browse/HBASE-21734) | Some optimization in FilterListWithOR | Major | . | +| [HBASE-21738](https://issues.apache.org/jira/browse/HBASE-21738) | Remove all the CSLM#size operation in our memstore because it's an quite time consuming. | Critical | Performance | +| [HBASE-21034](https://issues.apache.org/jira/browse/HBASE-21034) | Add new throttle type: read/write capacity unit | Major | . | +| [HBASE-21726](https://issues.apache.org/jira/browse/HBASE-21726) | Add getAllRegionLocations method to AsyncTableRegionLocator | Major | asyncclient, Client | +| [HBASE-19695](https://issues.apache.org/jira/browse/HBASE-19695) | Handle disabled table for async client | Major | asyncclient, Client | +| [HBASE-21711](https://issues.apache.org/jira/browse/HBASE-21711) | Remove references to git.apache.org/hbase.git | Critical | . | +| [HBASE-21647](https://issues.apache.org/jira/browse/HBASE-21647) | Add status track for splitting WAL tasks | Major | Operability | +| [HBASE-21705](https://issues.apache.org/jira/browse/HBASE-21705) | Should treat meta table specially for some methods in AsyncAdmin | Major | Admin, asyncclient, Client | +| [HBASE-21663](https://issues.apache.org/jira/browse/HBASE-21663) | Add replica scan support | Major | asyncclient, Client, read replicas | +| [HBASE-21580](https://issues.apache.org/jira/browse/HBASE-21580) | Support getting Hbck instance from AsyncConnection | Major | asyncclient, Client, hbck2 | +| [HBASE-21652](https://issues.apache.org/jira/browse/HBASE-21652) | Refactor ThriftServer making thrift2 server inherited from thrift1 server | Major | . | +| [HBASE-21661](https://issues.apache.org/jira/browse/HBASE-21661) | Provide Thrift2 implementation of Table/Admin | Major | . | +| [HBASE-21682](https://issues.apache.org/jira/browse/HBASE-21682) | Support getting from specific replica | Major | read replicas | +| [HBASE-21159](https://issues.apache.org/jira/browse/HBASE-21159) | Add shell command to switch throttle on or off | Major | . | +| [HBASE-21362](https://issues.apache.org/jira/browse/HBASE-21362) | Disable printing of stack-trace in shell when quotas are violated | Minor | shell | +| [HBASE-21361](https://issues.apache.org/jira/browse/HBASE-21361) | Disable printing of stack-trace in shell when quotas are not enabled | Minor | shell | +| [HBASE-17356](https://issues.apache.org/jira/browse/HBASE-17356) | Add replica get support | Major | Client | +| [HBASE-21650](https://issues.apache.org/jira/browse/HBASE-21650) | Add DDL operation and some other miscellaneous to thrift2 | Major | Thrift | +| [HBASE-21401](https://issues.apache.org/jira/browse/HBASE-21401) | Sanity check when constructing the KeyValue | Critical | regionserver | +| [HBASE-21578](https://issues.apache.org/jira/browse/HBASE-21578) | Fix wrong throttling exception for capacity unit | Major | . | +| [HBASE-21570](https://issues.apache.org/jira/browse/HBASE-21570) | Add write buffer periodic flush support for AsyncBufferedMutator | Major | asyncclient, Client | +| [HBASE-21465](https://issues.apache.org/jira/browse/HBASE-21465) | Retry on reportRegionStateTransition can lead to unexpected errors | Major | amv2 | +| [HBASE-21508](https://issues.apache.org/jira/browse/HBASE-21508) | Ignore the reportRegionStateTransition call from a dead server | Major | amv2 | +| [HBASE-21490](https://issues.apache.org/jira/browse/HBASE-21490) | WALProcedure may remove proc wal files still with active procedures | Major | proc-v2 | +| [HBASE-21377](https://issues.apache.org/jira/browse/HBASE-21377) | Add debug log for procedure stack id related operations | Major | proc-v2 | +| [HBASE-21472](https://issues.apache.org/jira/browse/HBASE-21472) | Should not persist the dispatched field for RegionRemoteProcedureBase | Major | amv2 | +| [HBASE-21473](https://issues.apache.org/jira/browse/HBASE-21473) | RowIndexSeekerV1 may return cell with extra two \\x00\\x00 bytes which has no tags | Major | . | +| [HBASE-21463](https://issues.apache.org/jira/browse/HBASE-21463) | The checkOnlineRegionsReport can accidentally complete a TRSP | Critical | amv2 | +| [HBASE-21376](https://issues.apache.org/jira/browse/HBASE-21376) | Add some verbose log to MasterProcedureScheduler | Major | logging, proc-v2 | +| [HBASE-21443](https://issues.apache.org/jira/browse/HBASE-21443) | [hbase-connectors] Purge hbase-\* modules from core now they've been moved to hbase-connectors | Major | hbase-connectors, spark | +| [HBASE-21421](https://issues.apache.org/jira/browse/HBASE-21421) | Do not kill RS if reportOnlineRegions fails | Major | . | +| [HBASE-21314](https://issues.apache.org/jira/browse/HBASE-21314) | The implementation of BitSetNode is not efficient | Major | proc-v2 | +| [HBASE-21351](https://issues.apache.org/jira/browse/HBASE-21351) | The force update thread may have race with PE worker when the procedure is rolling back | Critical | proc-v2 | +| [HBASE-21191](https://issues.apache.org/jira/browse/HBASE-21191) | Add a holding-pattern if no assign for meta or namespace (Can happen if masterprocwals have been cleared). | Major | amv2 | +| [HBASE-21322](https://issues.apache.org/jira/browse/HBASE-21322) | Add a scheduleServerCrashProcedure() API to HbckService | Critical | hbck2 | +| [HBASE-21375](https://issues.apache.org/jira/browse/HBASE-21375) | Revisit the lock and queue implementation in MasterProcedureScheduler | Major | proc-v2 | +| [HBASE-20973](https://issues.apache.org/jira/browse/HBASE-20973) | ArrayIndexOutOfBoundsException when rolling back procedure | Critical | amv2 | +| [HBASE-21384](https://issues.apache.org/jira/browse/HBASE-21384) | Procedure with holdlock=false should not be restored lock when restarts | Blocker | . | +| [HBASE-21364](https://issues.apache.org/jira/browse/HBASE-21364) | Procedure holds the lock should put to front of the queue after restart | Blocker | . | +| [HBASE-21215](https://issues.apache.org/jira/browse/HBASE-21215) | Figure how to invoke hbck2; make it easy to find | Major | amv2, hbck2 | +| [HBASE-21372](https://issues.apache.org/jira/browse/HBASE-21372) | Set hbase.assignment.maximum.attempts to Long.MAX | Major | amv2 | +| [HBASE-21363](https://issues.apache.org/jira/browse/HBASE-21363) | Rewrite the buildingHoldCleanupTracker method in WALProcedureStore | Major | proc-v2 | +| [HBASE-21338](https://issues.apache.org/jira/browse/HBASE-21338) | [balancer] If balancer is an ill-fit for cluster size, it gives little indication | Major | Balancer, Operability | +| [HBASE-21192](https://issues.apache.org/jira/browse/HBASE-21192) | Add HOW-TO repair damaged AMv2. | Major | amv2 | +| [HBASE-21073](https://issues.apache.org/jira/browse/HBASE-21073) | "Maintenance mode" master | Major | amv2, hbck2, master | +| [HBASE-21354](https://issues.apache.org/jira/browse/HBASE-21354) | Procedure may be deleted improperly during master restarts resulting in 'Corrupt' | Major | . | +| [HBASE-21336](https://issues.apache.org/jira/browse/HBASE-21336) | Simplify the implementation of WALProcedureMap | Major | proc-v2 | +| [HBASE-21323](https://issues.apache.org/jira/browse/HBASE-21323) | Should not skip force updating for a sub procedure even if it has been finished | Major | proc-v2 | +| [HBASE-21269](https://issues.apache.org/jira/browse/HBASE-21269) | Forward-port to branch-2 " HBASE-21213 [hbck2] bypass leaves behind state in RegionStates when assign/unassign" | Major | amv2 | +| [HBASE-20716](https://issues.apache.org/jira/browse/HBASE-20716) | Unsafe access cleanup | Critical | Performance | +| [HBASE-21330](https://issues.apache.org/jira/browse/HBASE-21330) | ReopenTableRegionsProcedure will enter an infinite loop if we schedule a TRSP at the same time | Major | amv2 | +| [HBASE-21310](https://issues.apache.org/jira/browse/HBASE-21310) | Split TestCloneSnapshotFromClient | Major | test | +| [HBASE-21311](https://issues.apache.org/jira/browse/HBASE-21311) | Split TestRestoreSnapshotFromClient | Major | test | +| [HBASE-21315](https://issues.apache.org/jira/browse/HBASE-21315) | The getActiveMinProcId and getActiveMaxProcId of BitSetNode are incorrect if there are no active procedure | Major | . | +| [HBASE-21278](https://issues.apache.org/jira/browse/HBASE-21278) | Do not rollback successful sub procedures when rolling back a procedure | Critical | proc-v2 | +| [HBASE-21309](https://issues.apache.org/jira/browse/HBASE-21309) | Increase the waiting timeout for TestProcedurePriority | Major | test | +| [HBASE-21254](https://issues.apache.org/jira/browse/HBASE-21254) | Need to find a way to limit the number of proc wal files | Critical | proc-v2 | +| [HBASE-21250](https://issues.apache.org/jira/browse/HBASE-21250) | Refactor WALProcedureStore and add more comments for better understanding the implementation | Major | proc-v2 | +| [HBASE-19275](https://issues.apache.org/jira/browse/HBASE-19275) | TestSnapshotFileCache never worked properly | Major | . | +| [HBASE-21249](https://issues.apache.org/jira/browse/HBASE-21249) | Add jitter for ProcedureUtil.getBackoffTimeMs | Major | proc-v2 | +| [HBASE-21244](https://issues.apache.org/jira/browse/HBASE-21244) | Skip persistence when retrying for assignment related procedures | Major | amv2, Performance, proc-v2 | +| [HBASE-21233](https://issues.apache.org/jira/browse/HBASE-21233) | Allow the procedure implementation to skip persistence of the state after a execution | Major | Performance, proc-v2 | +| [HBASE-21227](https://issues.apache.org/jira/browse/HBASE-21227) | Implement exponential retrying backoff for Assign/UnassignRegionHandler introduced in HBASE-21217 | Major | amv2, regionserver | +| [HBASE-21217](https://issues.apache.org/jira/browse/HBASE-21217) | Revisit the executeProcedure method for open/close region | Critical | amv2, proc-v2 | +| [HBASE-21214](https://issues.apache.org/jira/browse/HBASE-21214) | [hbck2] setTableState just sets hbase:meta state, not in-memory state | Major | amv2, hbck2 | +| [HBASE-21023](https://issues.apache.org/jira/browse/HBASE-21023) | Add bypassProcedureToCompletion() API to HbckService | Major | hbck2 | +| [HBASE-21156](https://issues.apache.org/jira/browse/HBASE-21156) | [hbck2] Queue an assign of hbase:meta and bulk assign/unassign | Critical | hbck2 | +| [HBASE-21169](https://issues.apache.org/jira/browse/HBASE-21169) | Initiate hbck2 tool in hbase-operator-tools repo | Major | hbck2 | +| [HBASE-21172](https://issues.apache.org/jira/browse/HBASE-21172) | Reimplement the retry backoff logic for ReopenTableRegionsProcedure | Major | amv2, proc-v2 | +| [HBASE-21189](https://issues.apache.org/jira/browse/HBASE-21189) | flaky job should gather machine stats | Minor | test | +| [HBASE-21190](https://issues.apache.org/jira/browse/HBASE-21190) | Log files and count of entries in each as we load from the MasterProcWAL store | Major | amv2 | +| [HBASE-21083](https://issues.apache.org/jira/browse/HBASE-21083) | Introduce a mechanism to bypass the execution of a stuck procedure | Major | amv2 | +| [HBASE-21017](https://issues.apache.org/jira/browse/HBASE-21017) | Revisit the expected states for open/close | Major | amv2 | +| [HBASE-20941](https://issues.apache.org/jira/browse/HBASE-20941) | Create and implement HbckService in master | Major | . | +| [HBASE-21072](https://issues.apache.org/jira/browse/HBASE-21072) | Block out HBCK1 in hbase2 | Major | hbck | +| [HBASE-21095](https://issues.apache.org/jira/browse/HBASE-21095) | The timeout retry logic for several procedures are broken after master restarts | Critical | amv2, proc-v2 | +| [HBASE-20975](https://issues.apache.org/jira/browse/HBASE-20975) | Lock may not be taken or released while rolling back procedure | Major | amv2 | +| [HBASE-21025](https://issues.apache.org/jira/browse/HBASE-21025) | Add cache for TableStateManager | Major | . | +| [HBASE-21012](https://issues.apache.org/jira/browse/HBASE-21012) | Revert the change of serializing TimeRangeTracker | Critical | . | +| [HBASE-20813](https://issues.apache.org/jira/browse/HBASE-20813) | Remove RPC quotas when the associated table/Namespace is dropped off | Minor | . | +| [HBASE-20885](https://issues.apache.org/jira/browse/HBASE-20885) | Remove entry for RPC quota from hbase:quota when RPC quota is removed. | Minor | . | +| [HBASE-20893](https://issues.apache.org/jira/browse/HBASE-20893) | Data loss if splitting region while ServerCrashProcedure executing | Major | . | +| [HBASE-20950](https://issues.apache.org/jira/browse/HBASE-20950) | Helper method to configure secure DFS cluster for tests | Major | test | +| [HBASE-19369](https://issues.apache.org/jira/browse/HBASE-19369) | HBase Should use Builder Pattern to Create Log Files while using WAL on Erasure Coding | Major | . | +| [HBASE-20939](https://issues.apache.org/jira/browse/HBASE-20939) | There will be race when we call suspendIfNotReady and then throw ProcedureSuspendedException | Critical | amv2 | +| [HBASE-20921](https://issues.apache.org/jira/browse/HBASE-20921) | Possible NPE in ReopenTableRegionsProcedure | Major | amv2 | +| [HBASE-20867](https://issues.apache.org/jira/browse/HBASE-20867) | RS may get killed while master restarts | Major | . | +| [HBASE-20878](https://issues.apache.org/jira/browse/HBASE-20878) | Data loss if merging regions while ServerCrashProcedure executing | Critical | amv2 | +| [HBASE-20846](https://issues.apache.org/jira/browse/HBASE-20846) | Restore procedure locks when master restarts | Major | . | +| [HBASE-20914](https://issues.apache.org/jira/browse/HBASE-20914) | Trim Master memory usage | Major | Balancer, master | +| [HBASE-20853](https://issues.apache.org/jira/browse/HBASE-20853) | Polish "Add defaults to Table Interface so Implementors don't have to" | Major | API | +| [HBASE-20875](https://issues.apache.org/jira/browse/HBASE-20875) | MemStoreLABImp::copyIntoCell uses 7% CPU when writing | Major | Performance | +| [HBASE-20860](https://issues.apache.org/jira/browse/HBASE-20860) | Merged region's RIT state may not be cleaned after master restart | Major | . | +| [HBASE-20847](https://issues.apache.org/jira/browse/HBASE-20847) | The parent procedure of RegionTransitionProcedure may not have the table lock | Major | proc-v2, Region Assignment | +| [HBASE-20776](https://issues.apache.org/jira/browse/HBASE-20776) | Update branch-2 version to 2.2.0-SNAPSHOT | Major | build | + + +### OTHER: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-21612](https://issues.apache.org/jira/browse/HBASE-21612) | Add developer debug options in HBase Config for REST server | Minor | Operability, REST, scripts | +| [HBASE-18735](https://issues.apache.org/jira/browse/HBASE-18735) | Provide a fast mechanism for shutting down mini cluster | Major | . | +| [HBASE-21489](https://issues.apache.org/jira/browse/HBASE-21489) | TestShell is broken | Major | shell | +| [HBASE-20152](https://issues.apache.org/jira/browse/HBASE-20152) | [AMv2] DisableTableProcedure versus ServerCrashProcedure | Major | amv2 | +| [HBASE-20540](https://issues.apache.org/jira/browse/HBASE-20540) | [umbrella] Hadoop 3 compatibility | Major | . | +| [HBASE-21536](https://issues.apache.org/jira/browse/HBASE-21536) | Fix completebulkload usage instructions | Trivial | documentation, mapreduce | +| [HBASE-22449](https://issues.apache.org/jira/browse/HBASE-22449) | https everywhere in Maven metadata | Minor | . | +| [HBASE-22406](https://issues.apache.org/jira/browse/HBASE-22406) | skip generating rdoc when building gems in our docker image for running yetus | Critical | build, test | +| [HBASE-22375](https://issues.apache.org/jira/browse/HBASE-22375) | Promote AccessChecker to LimitedPrivate(Coprocessor) | Minor | Coprocessors, security | +| [HBASE-21714](https://issues.apache.org/jira/browse/HBASE-21714) | Deprecated isTableAvailableWithSplit method in thrift module | Major | Thrift | +| [HBASE-22359](https://issues.apache.org/jira/browse/HBASE-22359) | Backport of HBASE-21371 misses activation-api license information | Minor | build, community | +| [HBASE-22174](https://issues.apache.org/jira/browse/HBASE-22174) | Remove error prone from our precommit javac check | Major | build | +| [HBASE-22231](https://issues.apache.org/jira/browse/HBASE-22231) | Remove unused and \* imports | Minor | . | +| [HBASE-22304](https://issues.apache.org/jira/browse/HBASE-22304) | Fix remaining Checkstyle issues in hbase-endpoint | Trivial | . | +| [HBASE-22020](https://issues.apache.org/jira/browse/HBASE-22020) | upgrade to yetus 0.9.0 | Major | build, community | +| [HBASE-22187](https://issues.apache.org/jira/browse/HBASE-22187) | Remove usage of deprecated ClusterConnection.clearRegionCache | Trivial | Client | +| [HBASE-22203](https://issues.apache.org/jira/browse/HBASE-22203) | Reformat DemoClient.java | Trivial | . | +| [HBASE-22189](https://issues.apache.org/jira/browse/HBASE-22189) | Remove usage of StoreFile.getModificationTimeStamp | Trivial | . | +| [HBASE-22108](https://issues.apache.org/jira/browse/HBASE-22108) | Avoid passing null in Admin methods | Major | Admin | +| [HBASE-22007](https://issues.apache.org/jira/browse/HBASE-22007) | Add restoreSnapshot and cloneSnapshot with acl methods in AsyncAdmin | Major | Admin, asyncclient, Client | +| [HBASE-22131](https://issues.apache.org/jira/browse/HBASE-22131) | Delete the patches in hbase-protocol-shaded module | Major | build, Protobufs | +| [HBASE-22099](https://issues.apache.org/jira/browse/HBASE-22099) | Backport HBASE-21895 "Error prone upgrade" to branch-2 | Major | build | +| [HBASE-22052](https://issues.apache.org/jira/browse/HBASE-22052) | pom cleaning; filter out jersey-core in hadoop2 to match hadoop3 and remove redunant version specifications | Major | . | +| [HBASE-22065](https://issues.apache.org/jira/browse/HBASE-22065) | Add listTableDescriptors(List\) method in AsyncAdmin | Major | Admin | +| [HBASE-22042](https://issues.apache.org/jira/browse/HBASE-22042) | Missing @Override annotation for RawAsyncTableImpl.scan | Major | asyncclient, Client | +| [HBASE-21057](https://issues.apache.org/jira/browse/HBASE-21057) | upgrade to latest spotbugs | Minor | community, test | +| [HBASE-21888](https://issues.apache.org/jira/browse/HBASE-21888) | Add a isClosed method to AsyncConnection | Major | asyncclient, Client | +| [HBASE-21884](https://issues.apache.org/jira/browse/HBASE-21884) | Fix box/unbox findbugs warning in secure bulk load | Minor | . | +| [HBASE-21859](https://issues.apache.org/jira/browse/HBASE-21859) | Add clearRegionLocationCache method for AsyncConnection | Major | asyncclient, Client | +| [HBASE-21853](https://issues.apache.org/jira/browse/HBASE-21853) | update copyright notices to 2019 | Major | documentation | +| [HBASE-21791](https://issues.apache.org/jira/browse/HBASE-21791) | Upgrade thrift dependency to 0.12.0 | Blocker | Thrift | +| [HBASE-21710](https://issues.apache.org/jira/browse/HBASE-21710) | Add quota related methods to the Admin interface | Major | . | +| [HBASE-21782](https://issues.apache.org/jira/browse/HBASE-21782) | LoadIncrementalHFiles should not be IA.Public | Major | mapreduce | +| [HBASE-21762](https://issues.apache.org/jira/browse/HBASE-21762) | Move some methods in ClusterConnection to Connection | Major | Client | +| [HBASE-21715](https://issues.apache.org/jira/browse/HBASE-21715) | Do not throw UnsupportedOperationException in ProcedureFuture.get | Major | Client | +| [HBASE-21716](https://issues.apache.org/jira/browse/HBASE-21716) | Add toStringCustomizedValues to TableDescriptor | Major | . | +| [HBASE-21731](https://issues.apache.org/jira/browse/HBASE-21731) | Do not need to use ClusterConnection in IntegrationTestBigLinkedListWithVisibility | Major | . | +| [HBASE-21685](https://issues.apache.org/jira/browse/HBASE-21685) | Change repository urls to Gitbox | Critical | . | +| [HBASE-21534](https://issues.apache.org/jira/browse/HBASE-21534) | TestAssignmentManager is flakey | Major | test | +| [HBASE-21541](https://issues.apache.org/jira/browse/HBASE-21541) | Move MetaTableLocator.verifyRegionLocation to hbase-rsgroup module | Major | . | +| [HBASE-21265](https://issues.apache.org/jira/browse/HBASE-21265) | Split up TestRSGroups | Minor | rsgroup, test | +| [HBASE-21517](https://issues.apache.org/jira/browse/HBASE-21517) | Move the getTableRegionForRow method from HMaster to TestMaster | Major | test | +| [HBASE-21281](https://issues.apache.org/jira/browse/HBASE-21281) | Update bouncycastle dependency. | Major | dependencies, test | +| [HBASE-21198](https://issues.apache.org/jira/browse/HBASE-21198) | Exclude dependency on net.minidev:json-smart | Major | . | +| [HBASE-21282](https://issues.apache.org/jira/browse/HBASE-21282) | Upgrade to latest jetty 9.2 and 9.3 versions | Major | dependencies | +| [HBASE-21287](https://issues.apache.org/jira/browse/HBASE-21287) | JVMClusterUtil Master initialization wait time not configurable | Major | test | +| [HBASE-21168](https://issues.apache.org/jira/browse/HBASE-21168) | BloomFilterUtil uses hardcoded randomness | Trivial | . | +| [HBASE-20482](https://issues.apache.org/jira/browse/HBASE-20482) | Print a link to the ref guide chapter for the shell during startup | Minor | documentation, shell | +| [HBASE-20942](https://issues.apache.org/jira/browse/HBASE-20942) | Improve RpcServer TRACE logging | Major | Operability | +| [HBASE-20989](https://issues.apache.org/jira/browse/HBASE-20989) | Minor, miscellaneous logging fixes | Trivial | logging | + + + +## Release 2.1.0 - Unreleased (as of 2018-07-10) + +### INCOMPATIBLE CHANGES: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-20691](https://issues.apache.org/jira/browse/HBASE-20691) | Storage policy should allow deferring to HDFS | Blocker | Filesystem Integration, wal | +| [HBASE-20270](https://issues.apache.org/jira/browse/HBASE-20270) | Turn off command help that follows all errors in shell | Major | shell | +| [HBASE-20501](https://issues.apache.org/jira/browse/HBASE-20501) | Change the Hadoop minimum version to 2.7.1 | Blocker | community, documentation | +| [HBASE-20406](https://issues.apache.org/jira/browse/HBASE-20406) | HBase Thrift HTTP - Shouldn't handle TRACE/OPTIONS methods | Major | security, Thrift | +| [HBASE-20159](https://issues.apache.org/jira/browse/HBASE-20159) | Support using separate ZK quorums for client | Major | Client, Operability, Zookeeper | +| [HBASE-20148](https://issues.apache.org/jira/browse/HBASE-20148) | Make serial replication as a option for a peer instead of a table | Major | Replication | + + +### NEW FEATURES: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-20833](https://issues.apache.org/jira/browse/HBASE-20833) | Modify pre-upgrade coprocessor validator to support table level coprocessors | Major | Coprocessors | +| [HBASE-15809](https://issues.apache.org/jira/browse/HBASE-15809) | Basic Replication WebUI | Critical | Replication, UI | +| [HBASE-19735](https://issues.apache.org/jira/browse/HBASE-19735) | Create a minimal "client" tarball installation | Major | build, Client | +| [HBASE-20656](https://issues.apache.org/jira/browse/HBASE-20656) | Validate pre-2.0 coprocessors against HBase 2.0+ | Major | tooling | +| [HBASE-20592](https://issues.apache.org/jira/browse/HBASE-20592) | Create a tool to verify tables do not have prefix tree encoding | Minor | Operability, tooling | +| [HBASE-20046](https://issues.apache.org/jira/browse/HBASE-20046) | Reconsider the implementation for serial replication | Major | Replication | +| [HBASE-19397](https://issues.apache.org/jira/browse/HBASE-19397) | Design procedures for ReplicationManager to notify peer change event from master | Major | proc-v2, Replication | + + +### IMPROVEMENTS: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-20806](https://issues.apache.org/jira/browse/HBASE-20806) | Split style journal for flushes and compactions | Minor | . | +| [HBASE-20474](https://issues.apache.org/jira/browse/HBASE-20474) | Show non-RPC tasks on master/regionserver Web UI by default | Major | UI | +| [HBASE-20826](https://issues.apache.org/jira/browse/HBASE-20826) | Truncate responseInfo attributes on RpcServer WARN messages | Major | rpc | +| [HBASE-20450](https://issues.apache.org/jira/browse/HBASE-20450) | Provide metrics for number of total active, priority and replication rpc handlers | Major | metrics | +| [HBASE-20810](https://issues.apache.org/jira/browse/HBASE-20810) | Include the procedure id in the exception message in HBaseAdmin for better debugging | Major | Admin, proc-v2 | +| [HBASE-20040](https://issues.apache.org/jira/browse/HBASE-20040) | Master UI should include "Cluster Key" needed to use the cluster as a replication sink | Minor | Replication, Usability | +| [HBASE-20095](https://issues.apache.org/jira/browse/HBASE-20095) | Redesign single instance pool in CleanerChore | Critical | . | +| [HBASE-19164](https://issues.apache.org/jira/browse/HBASE-19164) | Avoid UUID.randomUUID in tests | Major | test | +| [HBASE-20739](https://issues.apache.org/jira/browse/HBASE-20739) | Add priority for SCP | Major | Recovery | +| [HBASE-20737](https://issues.apache.org/jira/browse/HBASE-20737) | put collection into ArrayList instead of addAll function | Trivial | . | +| [HBASE-20695](https://issues.apache.org/jira/browse/HBASE-20695) | Implement table level RegionServer replication metrics | Minor | metrics | +| [HBASE-20733](https://issues.apache.org/jira/browse/HBASE-20733) | QABot should run checkstyle tests if the checkstyle configs change | Minor | build, community | +| [HBASE-20625](https://issues.apache.org/jira/browse/HBASE-20625) | refactor some WALCellCodec related code | Minor | wal | +| [HBASE-19852](https://issues.apache.org/jira/browse/HBASE-19852) | HBase Thrift 1 server SPNEGO Improvements | Major | Thrift | +| [HBASE-20579](https://issues.apache.org/jira/browse/HBASE-20579) | Improve snapshot manifest copy in ExportSnapshot | Minor | mapreduce | +| [HBASE-20444](https://issues.apache.org/jira/browse/HBASE-20444) | Improve version comparison logic for HBase specific version string and add unit tests | Major | util | +| [HBASE-20594](https://issues.apache.org/jira/browse/HBASE-20594) | provide utility to compare old and new descriptors | Major | . | +| [HBASE-20640](https://issues.apache.org/jira/browse/HBASE-20640) | TestQuotaGlobalsSettingsBypass missing test category and ClassRule | Critical | test | +| [HBASE-20478](https://issues.apache.org/jira/browse/HBASE-20478) | move import checks from hbaseanti to checkstyle | Minor | test | +| [HBASE-20548](https://issues.apache.org/jira/browse/HBASE-20548) | Master fails to startup on large clusters, refreshing block distribution | Major | . | +| [HBASE-20488](https://issues.apache.org/jira/browse/HBASE-20488) | PE tool prints full name in help message | Minor | shell | +| [HBASE-20567](https://issues.apache.org/jira/browse/HBASE-20567) | Pass both old and new descriptors to pre/post hooks of modify operations for table and namespace | Major | . | +| [HBASE-20545](https://issues.apache.org/jira/browse/HBASE-20545) | Improve performance of BaseLoadBalancer.retainAssignment | Major | Balancer | +| [HBASE-16191](https://issues.apache.org/jira/browse/HBASE-16191) | Add stop\_regionserver and stop\_master to shell | Major | . | +| [HBASE-20536](https://issues.apache.org/jira/browse/HBASE-20536) | Make TestRegionServerAccounting stable and it should not use absolute number | Minor | . | +| [HBASE-20523](https://issues.apache.org/jira/browse/HBASE-20523) | PE tool should support configuring client side buffering sizes | Minor | . | +| [HBASE-20527](https://issues.apache.org/jira/browse/HBASE-20527) | Remove unused code in MetaTableAccessor | Trivial | . | +| [HBASE-20507](https://issues.apache.org/jira/browse/HBASE-20507) | Do not need to call recoverLease on the broken file when we fail to create a wal writer | Major | wal | +| [HBASE-20484](https://issues.apache.org/jira/browse/HBASE-20484) | Remove the unnecessary autoboxing in FilterListBase | Trivial | . | +| [HBASE-20327](https://issues.apache.org/jira/browse/HBASE-20327) | When qualifier is not specified, append and incr operation do not work (shell) | Minor | shell | +| [HBASE-20389](https://issues.apache.org/jira/browse/HBASE-20389) | Move website building flags into a profile | Minor | build, website | +| [HBASE-20379](https://issues.apache.org/jira/browse/HBASE-20379) | shadedjars yetus plugin should add a footer link | Major | test | +| [HBASE-20243](https://issues.apache.org/jira/browse/HBASE-20243) | [Shell] Add shell command to create a new table by cloning the existent table | Minor | shell | +| [HBASE-20286](https://issues.apache.org/jira/browse/HBASE-20286) | Improving shell command compaction\_state | Minor | shell | +| [HBASE-19488](https://issues.apache.org/jira/browse/HBASE-19488) | Move to using Apache commons CollectionUtils | Trivial | . | +| [HBASE-20197](https://issues.apache.org/jira/browse/HBASE-20197) | Review of ByteBufferWriterOutputStream.java | Minor | . | +| [HBASE-20047](https://issues.apache.org/jira/browse/HBASE-20047) | AuthenticationTokenIdentifier should provide a toString | Minor | Usability | +| [HBASE-19024](https://issues.apache.org/jira/browse/HBASE-19024) | Configurable default durability for synchronous WAL | Critical | wal | +| [HBASE-19389](https://issues.apache.org/jira/browse/HBASE-19389) | Limit concurrency of put with dense (hundreds) columns to prevent write handler exhausted | Critical | Performance | +| [HBASE-20186](https://issues.apache.org/jira/browse/HBASE-20186) | Improve RSGroupBasedLoadBalancer#balanceCluster() to be more efficient when calculating cluster state for each rsgroup | Minor | rsgroup | +| [HBASE-19449](https://issues.apache.org/jira/browse/HBASE-19449) | Minor logging change in HFileArchiver | Trivial | . | +| [HBASE-20120](https://issues.apache.org/jira/browse/HBASE-20120) | Remove some unused classes/ java files from hbase-server | Minor | . | + + +### BUG FIXES: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-20854](https://issues.apache.org/jira/browse/HBASE-20854) | Wrong retries number in RpcRetryingCaller's log message | Minor | Client, logging | +| [HBASE-20784](https://issues.apache.org/jira/browse/HBASE-20784) | Will lose the SNAPSHOT suffix if we get the version of RS from ServerManager | Minor | master, UI | +| [HBASE-20822](https://issues.apache.org/jira/browse/HBASE-20822) | TestAsyncNonMetaRegionLocator is flakey | Major | asyncclient | +| [HBASE-20808](https://issues.apache.org/jira/browse/HBASE-20808) | Wrong shutdown order between Chores and ChoreService | Minor | . | +| [HBASE-20789](https://issues.apache.org/jira/browse/HBASE-20789) | TestBucketCache#testCacheBlockNextBlockMetadataMissing is flaky | Major | . | +| [HBASE-20829](https://issues.apache.org/jira/browse/HBASE-20829) | Remove the addFront assertion in MasterProcedureScheduler.doAdd | Major | Replication | +| [HBASE-20825](https://issues.apache.org/jira/browse/HBASE-20825) | Fix pre and post hooks of CloneSnapshot and RestoreSnapshot for Access checks | Major | security | +| [HBASE-20812](https://issues.apache.org/jira/browse/HBASE-20812) | Add defaults to Table Interface so implementors don't have to | Major | . | +| [HBASE-20817](https://issues.apache.org/jira/browse/HBASE-20817) | Infinite loop when executing ReopenTableRegionsProcedure | Blocker | Region Assignment | +| [HBASE-20792](https://issues.apache.org/jira/browse/HBASE-20792) | info:servername and info:sn inconsistent for OPEN region | Blocker | Region Assignment | +| [HBASE-20769](https://issues.apache.org/jira/browse/HBASE-20769) | getSplits() has a out of bounds problem in TableSnapshotInputFormatImpl | Major | . | +| [HBASE-20732](https://issues.apache.org/jira/browse/HBASE-20732) | Shutdown scan pool when master is stopped. | Minor | . | +| [HBASE-20785](https://issues.apache.org/jira/browse/HBASE-20785) | NPE getting metrics in PE testing scans | Major | Performance | +| [HBASE-20795](https://issues.apache.org/jira/browse/HBASE-20795) | Allow option in BBKVComparator.compare to do comparison without sequence id | Major | . | +| [HBASE-20777](https://issues.apache.org/jira/browse/HBASE-20777) | RpcConnection could still remain opened after we shutdown the NettyRpcServer | Major | rpc | +| [HBASE-20403](https://issues.apache.org/jira/browse/HBASE-20403) | Prefetch sometimes doesn't work with encrypted file system | Major | . | +| [HBASE-20635](https://issues.apache.org/jira/browse/HBASE-20635) | Support to convert the shaded user permission proto to client user permission object | Major | . | +| [HBASE-20778](https://issues.apache.org/jira/browse/HBASE-20778) | Make it so WALPE runs on DFS | Major | test | +| [HBASE-20775](https://issues.apache.org/jira/browse/HBASE-20775) | TestMultiParallel is flakey | Major | Region Assignment | +| [HBASE-20752](https://issues.apache.org/jira/browse/HBASE-20752) | Make sure the regions are truly reopened after ReopenTableRegionsProcedure | Major | proc-v2 | +| [HBASE-18622](https://issues.apache.org/jira/browse/HBASE-18622) | Mitigate API compatibility concerns between branch-1 and branch-2 | Blocker | API | +| [HBASE-20767](https://issues.apache.org/jira/browse/HBASE-20767) | Always close hbaseAdmin along with connection in HBTU | Major | test | +| [HBASE-20642](https://issues.apache.org/jira/browse/HBASE-20642) | IntegrationTestDDLMasterFailover throws 'InvalidFamilyOperationException | Major | . | +| [HBASE-20742](https://issues.apache.org/jira/browse/HBASE-20742) | Always create WAL directory for region server | Major | wal | +| [HBASE-20708](https://issues.apache.org/jira/browse/HBASE-20708) | Remove the usage of RecoverMetaProcedure in master startup | Blocker | proc-v2, Region Assignment | +| [HBASE-20723](https://issues.apache.org/jira/browse/HBASE-20723) | Custom hbase.wal.dir results in data loss because we write recovered edits into a different place than where the recovering region server looks for them | Critical | Recovery, wal | +| [HBASE-20681](https://issues.apache.org/jira/browse/HBASE-20681) | IntegrationTestDriver fails after HADOOP-15406 due to missing hamcrest-core | Major | integration tests | +| [HBASE-20561](https://issues.apache.org/jira/browse/HBASE-20561) | The way we stop a ReplicationSource may cause the RS down | Major | Replication | +| [HBASE-19377](https://issues.apache.org/jira/browse/HBASE-19377) | Compatibility checker complaining about hash collisions | Major | community | +| [HBASE-20689](https://issues.apache.org/jira/browse/HBASE-20689) | Docker fails to install rubocop for precommit | Blocker | build | +| [HBASE-20707](https://issues.apache.org/jira/browse/HBASE-20707) | Move MissingSwitchDefault check from checkstyle to error-prone | Major | build | +| [HBASE-20699](https://issues.apache.org/jira/browse/HBASE-20699) | QuotaCache should cancel the QuotaRefresherChore service inside its stop() | Major | . | +| [HBASE-20590](https://issues.apache.org/jira/browse/HBASE-20590) | REST Java client is not able to negotiate with the server in the secure mode | Critical | REST, security | +| [HBASE-20683](https://issues.apache.org/jira/browse/HBASE-20683) | Incorrect return value for PreUpgradeValidator | Critical | . | +| [HBASE-20684](https://issues.apache.org/jira/browse/HBASE-20684) | org.apache.hadoop.hbase.client.Scan#setStopRow javadoc uses incorrect method | Trivial | Client, documentation | +| [HBASE-20678](https://issues.apache.org/jira/browse/HBASE-20678) | NPE in ReplicationSourceManager#NodeFailoverWorker | Minor | . | +| [HBASE-20670](https://issues.apache.org/jira/browse/HBASE-20670) | NPE in HMaster#isInMaintenanceMode | Minor | . | +| [HBASE-20634](https://issues.apache.org/jira/browse/HBASE-20634) | Reopen region while server crash can cause the procedure to be stuck | Critical | . | +| [HBASE-12882](https://issues.apache.org/jira/browse/HBASE-12882) | Log level for org.apache.hadoop.hbase package should be configurable | Major | . | +| [HBASE-20668](https://issues.apache.org/jira/browse/HBASE-20668) | Avoid permission change if ExportSnapshot's copy fails | Major | . | +| [HBASE-18116](https://issues.apache.org/jira/browse/HBASE-18116) | Replication source in-memory accounting should not include bulk transfer hfiles | Major | Replication | +| [HBASE-20602](https://issues.apache.org/jira/browse/HBASE-20602) | hbase.master.quota.observer.ignore property seems to be not taking effect | Minor | documentation | +| [HBASE-20664](https://issues.apache.org/jira/browse/HBASE-20664) | Variable shared across multiple threads | Major | . | +| [HBASE-20659](https://issues.apache.org/jira/browse/HBASE-20659) | Implement a reopen table regions procedure | Major | . | +| [HBASE-20582](https://issues.apache.org/jira/browse/HBASE-20582) | Bump up JRuby version because of some reported vulnerabilities | Major | dependencies, shell | +| [HBASE-20533](https://issues.apache.org/jira/browse/HBASE-20533) | Fix the flaky TestAssignmentManagerMetrics | Major | . | +| [HBASE-20597](https://issues.apache.org/jira/browse/HBASE-20597) | Use a lock to serialize access to a shared reference to ZooKeeperWatcher in HBaseReplicationEndpoint | Minor | Replication | +| [HBASE-20633](https://issues.apache.org/jira/browse/HBASE-20633) | Dropping a table containing a disable violation policy fails to remove the quota upon table delete | Major | . | +| [HBASE-20645](https://issues.apache.org/jira/browse/HBASE-20645) | Fix security\_available method in security.rb | Major | . | +| [HBASE-20612](https://issues.apache.org/jira/browse/HBASE-20612) | TestReplicationKillSlaveRSWithSeparateOldWALs sometimes fail because it uses an expired cluster conn | Major | . | +| [HBASE-20648](https://issues.apache.org/jira/browse/HBASE-20648) | HBASE-19364 "Truncate\_preserve fails with table when replica region \> 1" for master branch | Major | . | +| [HBASE-20588](https://issues.apache.org/jira/browse/HBASE-20588) | Space quota change after quota violation doesn't seem to take in effect | Major | regionserver | +| [HBASE-20616](https://issues.apache.org/jira/browse/HBASE-20616) | TruncateTableProcedure is stuck in retry loop in TRUNCATE\_TABLE\_CREATE\_FS\_LAYOUT state | Major | amv2 | +| [HBASE-20638](https://issues.apache.org/jira/browse/HBASE-20638) | nightly source artifact testing should fail the stage if it's going to report an error on jira | Major | test | +| [HBASE-20624](https://issues.apache.org/jira/browse/HBASE-20624) | Race in ReplicationSource which causes walEntryFilter being null when creating new shipper | Major | Replication | +| [HBASE-20601](https://issues.apache.org/jira/browse/HBASE-20601) | Add multiPut support and other miscellaneous to PE | Minor | tooling | +| [HBASE-20627](https://issues.apache.org/jira/browse/HBASE-20627) | Relocate RS Group pre/post hooks from RSGroupAdminServer to RSGroupAdminEndpoint | Major | . | +| [HBASE-20591](https://issues.apache.org/jira/browse/HBASE-20591) | nightly job doesn't respect maven options | Critical | test | +| [HBASE-20560](https://issues.apache.org/jira/browse/HBASE-20560) | Revisit the TestReplicationDroppedTables ut | Major | . | +| [HBASE-20571](https://issues.apache.org/jira/browse/HBASE-20571) | JMXJsonServlet generates invalid JSON if it has NaN in metrics | Major | UI | +| [HBASE-20585](https://issues.apache.org/jira/browse/HBASE-20585) | Need to clear peer map when clearing MasterProcedureScheduler | Major | proc-v2 | +| [HBASE-20457](https://issues.apache.org/jira/browse/HBASE-20457) | Return immediately for a scan rpc call when we want to switch from pread to stream | Major | scan | +| [HBASE-20447](https://issues.apache.org/jira/browse/HBASE-20447) | Only fail cacheBlock if block collisions aren't related to next block metadata | Major | BlockCache, BucketCache | +| [HBASE-20544](https://issues.apache.org/jira/browse/HBASE-20544) | downstream HBaseTestingUtility fails with invalid port | Blocker | test | +| [HBASE-20004](https://issues.apache.org/jira/browse/HBASE-20004) | Client is not able to execute REST queries in a secure cluster | Minor | REST, security | +| [HBASE-20475](https://issues.apache.org/jira/browse/HBASE-20475) | Fix the flaky TestReplicationDroppedTables unit test. | Major | . | +| [HBASE-20554](https://issues.apache.org/jira/browse/HBASE-20554) | "WALs outstanding" message from CleanerChore is noisy | Trivial | . | +| [HBASE-20204](https://issues.apache.org/jira/browse/HBASE-20204) | Add locking to RefreshFileConnections in BucketCache | Major | BucketCache | +| [HBASE-20485](https://issues.apache.org/jira/browse/HBASE-20485) | Copy constructor of Scan doesn't copy the readType and replicaId | Minor | . | +| [HBASE-20543](https://issues.apache.org/jira/browse/HBASE-20543) | Fix the flaky TestThriftHttpServer | Major | . | +| [HBASE-20521](https://issues.apache.org/jira/browse/HBASE-20521) | TableOutputFormat.checkOutputSpecs conf checking sequence cause pig script run fail | Major | mapreduce | +| [HBASE-20500](https://issues.apache.org/jira/browse/HBASE-20500) | [rsgroup] should keep at least one server in default group | Major | rsgroup | +| [HBASE-20517](https://issues.apache.org/jira/browse/HBASE-20517) | Fix PerformanceEvaluation 'column' parameter | Major | test | +| [HBASE-20524](https://issues.apache.org/jira/browse/HBASE-20524) | Need to clear metrics when ReplicationSourceManager refresh replication sources | Minor | . | +| [HBASE-20476](https://issues.apache.org/jira/browse/HBASE-20476) | Open sequence number could go backwards in AssignProcedure | Major | Region Assignment | +| [HBASE-20506](https://issues.apache.org/jira/browse/HBASE-20506) | Add doc and test for unused RetryCounter, useful-looking utility | Minor | . | +| [HBASE-20492](https://issues.apache.org/jira/browse/HBASE-20492) | UnassignProcedure is stuck in retry loop on region stuck in OPENING state | Critical | amv2 | +| [HBASE-20497](https://issues.apache.org/jira/browse/HBASE-20497) | The getRecoveredQueueStartPos always return 0 in RecoveredReplicationSourceShipper | Major | Replication | +| [HBASE-18842](https://issues.apache.org/jira/browse/HBASE-18842) | The hbase shell clone\_snaphost command returns bad error message | Minor | shell | +| [HBASE-20466](https://issues.apache.org/jira/browse/HBASE-20466) | Consistently use override mechanism for exempt classes in CoprocessClassloader | Major | Coprocessors | +| [HBASE-20006](https://issues.apache.org/jira/browse/HBASE-20006) | TestRestoreSnapshotFromClientWithRegionReplicas is flakey | Critical | read replicas | +| [HBASE-18059](https://issues.apache.org/jira/browse/HBASE-18059) | The scanner order for memstore scanners are wrong | Critical | regionserver, scan, Scanners | +| [HBASE-20404](https://issues.apache.org/jira/browse/HBASE-20404) | Ugly cleanerchore complaint that dir is not empty | Major | master | +| [HBASE-20419](https://issues.apache.org/jira/browse/HBASE-20419) | Fix potential NPE in ZKUtil#listChildrenAndWatchForNewChildren callers | Major | . | +| [HBASE-20364](https://issues.apache.org/jira/browse/HBASE-20364) | nightly job gives old results or no results for stages that timeout on SCM | Critical | test | +| [HBASE-20335](https://issues.apache.org/jira/browse/HBASE-20335) | nightly jobs no longer contain machine information | Critical | test | +| [HBASE-20338](https://issues.apache.org/jira/browse/HBASE-20338) | WALProcedureStore#recoverLease() should have fixed sleeps for retrying rollWriter() | Major | . | +| [HBASE-20356](https://issues.apache.org/jira/browse/HBASE-20356) | make skipping protoc possible | Critical | dependencies, thirdparty | +| [HBASE-15291](https://issues.apache.org/jira/browse/HBASE-15291) | FileSystem not closed in secure bulkLoad | Major | . | +| [HBASE-20068](https://issues.apache.org/jira/browse/HBASE-20068) | Hadoopcheck project health check uses default maven repo instead of yetus managed ones | Major | community, test | +| [HBASE-20361](https://issues.apache.org/jira/browse/HBASE-20361) | Non-successive TableInputSplits may wrongly be merged by auto balancing feature | Major | mapreduce | +| [HBASE-20260](https://issues.apache.org/jira/browse/HBASE-20260) | Purge old content from the book for branch-2/master | Critical | documentation | +| [HBASE-20058](https://issues.apache.org/jira/browse/HBASE-20058) | improper quoting in presplitting command docs | Minor | documentation | +| [HBASE-19923](https://issues.apache.org/jira/browse/HBASE-19923) | Reset peer state and config when refresh replication source failed | Major | Replication | +| [HBASE-19748](https://issues.apache.org/jira/browse/HBASE-19748) | TestRegionReplicaFailover and TestRegionReplicaReplicationEndpoint UT hangs | Major | . | + + +### TESTS: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-20667](https://issues.apache.org/jira/browse/HBASE-20667) | Rename TestGlobalThrottler to TestReplicationGlobalThrottler | Trivial | . | +| [HBASE-20646](https://issues.apache.org/jira/browse/HBASE-20646) | TestWALProcedureStoreOnHDFS failing on branch-1 | Trivial | . | +| [HBASE-20505](https://issues.apache.org/jira/browse/HBASE-20505) | PE should support multi column family read and write cases | Minor | . | +| [HBASE-20513](https://issues.apache.org/jira/browse/HBASE-20513) | Collect and emit ScanMetrics in PerformanceEvaluation | Minor | test | +| [HBASE-20414](https://issues.apache.org/jira/browse/HBASE-20414) | TestLockProcedure#testMultipleLocks may fail on slow machine | Major | . | + + +### SUB-TASKS: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-20831](https://issues.apache.org/jira/browse/HBASE-20831) | Copy master doc into branch-2.1 and edit to make it suit 2.1.0 | Blocker | documentation | +| [HBASE-20839](https://issues.apache.org/jira/browse/HBASE-20839) | Fallback to FSHLog if we can not instantiated AsyncFSWAL when user does not specify AsyncFSWAL explicitly | Blocker | wal | +| [HBASE-20244](https://issues.apache.org/jira/browse/HBASE-20244) | NoSuchMethodException when retrieving private method decryptEncryptedDataEncryptionKey from DFSClient | Blocker | wal | +| [HBASE-20193](https://issues.apache.org/jira/browse/HBASE-20193) | Basic Replication Web UI - Regionserver | Critical | Replication, Usability | +| [HBASE-20489](https://issues.apache.org/jira/browse/HBASE-20489) | Update Reference Guide that CLUSTER\_KEY value is present on the Master UI info page. | Minor | documentation | +| [HBASE-19722](https://issues.apache.org/jira/browse/HBASE-19722) | Meta query statistics metrics source | Major | . | +| [HBASE-20781](https://issues.apache.org/jira/browse/HBASE-20781) | Save recalculating families in a WALEdit batch of Cells | Major | Performance | +| [HBASE-20194](https://issues.apache.org/jira/browse/HBASE-20194) | Basic Replication WebUI - Master | Critical | Replication, Usability | +| [HBASE-20780](https://issues.apache.org/jira/browse/HBASE-20780) | ServerRpcConnection logging cleanup | Major | logging, Performance | +| [HBASE-19764](https://issues.apache.org/jira/browse/HBASE-19764) | Fix Checkstyle errors in hbase-endpoint | Minor | . | +| [HBASE-20710](https://issues.apache.org/jira/browse/HBASE-20710) | extra cloneFamily() in Mutation.add(Cell) | Minor | regionserver | +| [HBASE-18569](https://issues.apache.org/jira/browse/HBASE-18569) | Add prefetch support for async region locator | Major | asyncclient, Client | +| [HBASE-20706](https://issues.apache.org/jira/browse/HBASE-20706) | [hack] Don't add known not-OPEN regions in reopen phase of MTP | Critical | amv2 | +| [HBASE-20334](https://issues.apache.org/jira/browse/HBASE-20334) | add a test that expressly uses both our shaded client and the one from hadoop 3 | Major | hadoop3, shading | +| [HBASE-20615](https://issues.apache.org/jira/browse/HBASE-20615) | emphasize use of shaded client jars when they're present in an install | Major | build, Client, Usability | +| [HBASE-20333](https://issues.apache.org/jira/browse/HBASE-20333) | break up shaded client into one with no Hadoop and one that's standalone | Critical | shading | +| [HBASE-20332](https://issues.apache.org/jira/browse/HBASE-20332) | shaded mapreduce module shouldn't include hadoop | Critical | mapreduce, shading | +| [HBASE-20722](https://issues.apache.org/jira/browse/HBASE-20722) | Make RegionServerTracker only depend on children changed event | Major | . | +| [HBASE-20700](https://issues.apache.org/jira/browse/HBASE-20700) | Move meta region when server crash can cause the procedure to be stuck | Critical | master, proc-v2, Region Assignment | +| [HBASE-20628](https://issues.apache.org/jira/browse/HBASE-20628) | SegmentScanner does over-comparing when one flushing | Critical | Performance | +| [HBASE-19761](https://issues.apache.org/jira/browse/HBASE-19761) | Fix Checkstyle errors in hbase-zookeeper | Minor | . | +| [HBASE-19724](https://issues.apache.org/jira/browse/HBASE-19724) | Fix Checkstyle errors in hbase-hadoop2-compat | Minor | . | +| [HBASE-20518](https://issues.apache.org/jira/browse/HBASE-20518) | Need to serialize the enabled field for UpdatePeerConfigProcedure | Major | Replication | +| [HBASE-20481](https://issues.apache.org/jira/browse/HBASE-20481) | Replicate entries from same region serially in ReplicationEndpoint for serial replication | Major | . | +| [HBASE-20378](https://issues.apache.org/jira/browse/HBASE-20378) | Provide a hbck option to cleanup replication barrier for a table | Major | . | +| [HBASE-20128](https://issues.apache.org/jira/browse/HBASE-20128) | Add new UTs which extends the old replication UTs but set replication scope to SERIAL | Major | . | +| [HBASE-20417](https://issues.apache.org/jira/browse/HBASE-20417) | Do not read wal entries when peer is disabled | Major | Replication | +| [HBASE-20294](https://issues.apache.org/jira/browse/HBASE-20294) | Also cleanup last pushed sequence id in ReplicationBarrierCleaner | Major | Replication | +| [HBASE-20377](https://issues.apache.org/jira/browse/HBASE-20377) | Deal with table in enabling and disabling state when modifying serial replication peer | Major | Replication | +| [HBASE-20367](https://issues.apache.org/jira/browse/HBASE-20367) | Write a replication barrier for regions when disabling a table | Major | Replication | +| [HBASE-20296](https://issues.apache.org/jira/browse/HBASE-20296) | Remove last pushed sequence ids when removing tables from a peer | Major | Replication | +| [HBASE-20285](https://issues.apache.org/jira/browse/HBASE-20285) | Delete all last pushed sequence ids when removing a peer or removing the serial flag for a peer | Major | Replication | +| [HBASE-20138](https://issues.apache.org/jira/browse/HBASE-20138) | Find a way to deal with the conflicts when updating replication position | Major | Replication | +| [HBASE-20127](https://issues.apache.org/jira/browse/HBASE-20127) | Add UT for serial replication after failover | Major | Replication, test | +| [HBASE-20271](https://issues.apache.org/jira/browse/HBASE-20271) | ReplicationSourceWALReader.switched should use the file name instead of the path object directly | Major | Replication | +| [HBASE-20227](https://issues.apache.org/jira/browse/HBASE-20227) | Add UT for ReplicationUtils.contains method | Major | Replication, test | +| [HBASE-20147](https://issues.apache.org/jira/browse/HBASE-20147) | Serial replication will be stuck if we create a table with serial replication but add it to a peer after there are region moves | Major | . | +| [HBASE-20116](https://issues.apache.org/jira/browse/HBASE-20116) | Optimize the region last pushed sequence id layout on zk | Major | Replication | +| [HBASE-20242](https://issues.apache.org/jira/browse/HBASE-20242) | The open sequence number will grow if we fail to open a region after writing the max sequence id file | Major | . | +| [HBASE-20155](https://issues.apache.org/jira/browse/HBASE-20155) | update branch-2 version to 2.1.0-SNAPSHOT | Major | build, community | +| [HBASE-20206](https://issues.apache.org/jira/browse/HBASE-20206) | WALEntryStream should not switch WAL file silently | Major | Replication | +| [HBASE-20117](https://issues.apache.org/jira/browse/HBASE-20117) | Cleanup the unused replication barriers in meta table | Major | master, Replication | +| [HBASE-20165](https://issues.apache.org/jira/browse/HBASE-20165) | Shell command to make a normal peer to be a serial replication peer | Major | . | +| [HBASE-20167](https://issues.apache.org/jira/browse/HBASE-20167) | Optimize the implementation of ReplicationSourceWALReader | Major | Replication | +| [HBASE-20125](https://issues.apache.org/jira/browse/HBASE-20125) | Add UT for serial replication after region split and merge | Major | Replication | +| [HBASE-20129](https://issues.apache.org/jira/browse/HBASE-20129) | Add UT for serial replication checker | Major | Replication | +| [HBASE-20115](https://issues.apache.org/jira/browse/HBASE-20115) | Reimplement serial replication based on the new replication storage layer | Major | Replication | +| [HBASE-20050](https://issues.apache.org/jira/browse/HBASE-20050) | Reimplement updateReplicationPositions logic in serial replication based on the newly introduced replication storage layer | Major | . | +| [HBASE-20082](https://issues.apache.org/jira/browse/HBASE-20082) | Fix findbugs errors only on master which are introduced by HBASE-19397 | Major | findbugs | +| [HBASE-19936](https://issues.apache.org/jira/browse/HBASE-19936) | Introduce a new base class for replication peer procedure | Major | . | +| [HBASE-19719](https://issues.apache.org/jira/browse/HBASE-19719) | Fix checkstyle issues | Major | proc-v2, Replication | +| [HBASE-19711](https://issues.apache.org/jira/browse/HBASE-19711) | TestReplicationAdmin.testConcurrentPeerOperations hangs | Major | proc-v2 | +| [HBASE-19707](https://issues.apache.org/jira/browse/HBASE-19707) | Race in start and terminate of a replication source after we async start replicatione endpoint | Major | proc-v2, Replication | +| [HBASE-19636](https://issues.apache.org/jira/browse/HBASE-19636) | All rs should already start work with the new peer change when replication peer procedure is finished | Major | proc-v2, Replication | +| [HBASE-19634](https://issues.apache.org/jira/browse/HBASE-19634) | Add permission check for executeProcedures in AccessController | Major | proc-v2, Replication | +| [HBASE-19697](https://issues.apache.org/jira/browse/HBASE-19697) | Remove TestReplicationAdminUsingProcedure | Major | proc-v2, Replication | +| [HBASE-19661](https://issues.apache.org/jira/browse/HBASE-19661) | Replace ReplicationStateZKBase with ZKReplicationStorageBase | Major | proc-v2, Replication | +| [HBASE-19687](https://issues.apache.org/jira/browse/HBASE-19687) | Move the logic in ReplicationZKNodeCleaner to ReplicationChecker and remove ReplicationZKNodeCleanerChore | Major | proc-v2, Replication | +| [HBASE-19544](https://issues.apache.org/jira/browse/HBASE-19544) | Add UTs for testing concurrent modifications on replication peer | Major | proc-v2, Replication, test | +| [HBASE-19686](https://issues.apache.org/jira/browse/HBASE-19686) | Use KeyLocker instead of ReentrantLock in PeerProcedureHandlerImpl | Major | proc-v2, Replication | +| [HBASE-19623](https://issues.apache.org/jira/browse/HBASE-19623) | Create replication endpoint asynchronously when adding a replication source | Major | proc-v2, Replication | +| [HBASE-19633](https://issues.apache.org/jira/browse/HBASE-19633) | Clean up the replication queues in the postPeerModification stage when removing a peer | Major | proc-v2, Replication | +| [HBASE-19622](https://issues.apache.org/jira/browse/HBASE-19622) | Reimplement ReplicationPeers with the new replication storage interface | Major | proc-v2, Replication | +| [HBASE-19635](https://issues.apache.org/jira/browse/HBASE-19635) | Introduce a thread at RS side to call reportProcedureDone | Major | proc-v2 | +| [HBASE-19617](https://issues.apache.org/jira/browse/HBASE-19617) | Remove ReplicationQueues, use ReplicationQueueStorage directly | Major | Replication | +| [HBASE-19642](https://issues.apache.org/jira/browse/HBASE-19642) | Fix locking for peer modification procedure | Critical | proc-v2, Replication | +| [HBASE-19592](https://issues.apache.org/jira/browse/HBASE-19592) | Add UTs to test retry on update zk failure | Major | proc-v2, Replication | +| [HBASE-19630](https://issues.apache.org/jira/browse/HBASE-19630) | Add peer cluster key check when add new replication peer | Major | proc-v2, Replication | +| [HBASE-19573](https://issues.apache.org/jira/browse/HBASE-19573) | Rewrite ReplicationPeer with the new replication storage interface | Major | proc-v2, Replication | +| [HBASE-19579](https://issues.apache.org/jira/browse/HBASE-19579) | Add peer lock test for shell command list\_locks | Major | proc-v2, Replication | +| [HBASE-19599](https://issues.apache.org/jira/browse/HBASE-19599) | Remove ReplicationQueuesClient, use ReplicationQueueStorage directly | Major | Replication | +| [HBASE-19543](https://issues.apache.org/jira/browse/HBASE-19543) | Abstract a replication storage interface to extract the zk specific code | Major | proc-v2, Replication | +| [HBASE-19525](https://issues.apache.org/jira/browse/HBASE-19525) | RS side changes for moving peer modification from zk watcher to procedure | Major | proc-v2, Replication | +| [HBASE-19580](https://issues.apache.org/jira/browse/HBASE-19580) | Use slf4j instead of commons-logging in new, just-added Peer Procedure classes | Major | proc-v2, Replication | +| [HBASE-19520](https://issues.apache.org/jira/browse/HBASE-19520) | Add UTs for the new lock type PEER | Major | proc-v2 | +| [HBASE-19564](https://issues.apache.org/jira/browse/HBASE-19564) | Procedure id is missing in the response of peer related operations | Major | proc-v2, Replication | +| [HBASE-19536](https://issues.apache.org/jira/browse/HBASE-19536) | Client side changes for moving peer modification from zk watcher to procedure | Major | Replication | +| [HBASE-19524](https://issues.apache.org/jira/browse/HBASE-19524) | Master side changes for moving peer modification from zk watcher to procedure | Major | proc-v2, Replication | +| [HBASE-19216](https://issues.apache.org/jira/browse/HBASE-19216) | Implement a general framework to execute remote procedure on RS | Major | proc-v2, Replication | + + +### OTHER: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-19997](https://issues.apache.org/jira/browse/HBASE-19997) | [rolling upgrade] 1.x =\> 2.x | Blocker | . | +| [HBASE-20360](https://issues.apache.org/jira/browse/HBASE-20360) | Further optimization for serial replication | Major | Replication | +| [HBASE-20862](https://issues.apache.org/jira/browse/HBASE-20862) | Address 2.1.0 Compatibility Report Issues | Blocker | compatibility | +| [HBASE-20665](https://issues.apache.org/jira/browse/HBASE-20665) | "Already cached block XXX" message should be DEBUG | Minor | BlockCache | +| [HBASE-20677](https://issues.apache.org/jira/browse/HBASE-20677) | Backport test of HBASE-20566 'Creating a system table after enabling rsgroup feature puts region into RIT' to branch-2 | Major | . | +| [HBASE-19475](https://issues.apache.org/jira/browse/HBASE-19475) | Extend backporting strategy in documentation | Trivial | documentation | +| [HBASE-20595](https://issues.apache.org/jira/browse/HBASE-20595) | Remove the concept of 'special tables' from rsgroups | Major | Region Assignment, rsgroup | +| [HBASE-20415](https://issues.apache.org/jira/browse/HBASE-20415) | branches-2 don't need maven-scala-plugin | Major | build | +| [HBASE-20112](https://issues.apache.org/jira/browse/HBASE-20112) | Include test results from nightly hadoop3 tests in jenkins test results | Critical | test | +| [HBASE-17918](https://issues.apache.org/jira/browse/HBASE-17918) | document serial replication | Critical | documentation, Replication | +| [HBASE-19737](https://issues.apache.org/jira/browse/HBASE-19737) | Manage a HBASE-19397-branch-2 branch and merge it to branch-2 | Major | proc-v2, Replication | + +## Release 2.0.0 - Unreleased (as of 2018-04-22) + +### INCOMPATIBLE CHANGES: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-20276](https://issues.apache.org/jira/browse/HBASE-20276) | [shell] Revert shell REPL change and document | Blocker | documentation, shell | +| [HBASE-16459](https://issues.apache.org/jira/browse/HBASE-16459) | Remove unused hbase shell --format option | Trivial | shell | +| [HBASE-19128](https://issues.apache.org/jira/browse/HBASE-19128) | Purge Distributed Log Replay from codebase, configurations, text; mark the feature as unsupported, broken. | Major | documentation | +| [HBASE-19504](https://issues.apache.org/jira/browse/HBASE-19504) | Add TimeRange support into checkAndMutate | Major | . | +| [HBASE-20119](https://issues.apache.org/jira/browse/HBASE-20119) | Introduce a pojo class to carry coprocessor information in order to make TableDescriptorBuilder accept multiple cp at once | Minor | . | +| [HBASE-19437](https://issues.apache.org/jira/browse/HBASE-19437) | Batch operation can't handle the null result for Append/Increment | Critical | Usability | +| [HBASE-19873](https://issues.apache.org/jira/browse/HBASE-19873) | Add a CategoryBasedTimeout ClassRule for all UTs | Major | . | +| [HBASE-19783](https://issues.apache.org/jira/browse/HBASE-19783) | Change replication peer cluster key/endpoint from a not-null value to null is not allowed | Minor | Replication | +| [HBASE-19483](https://issues.apache.org/jira/browse/HBASE-19483) | Add proper privilege check for rsgroup commands | Major | rsgroup, security | +| [HBASE-19492](https://issues.apache.org/jira/browse/HBASE-19492) | Add EXCLUDE\_NAMESPACE and EXCLUDE\_TABLECFS support to replication peer config | Major | . | +| [HBASE-19357](https://issues.apache.org/jira/browse/HBASE-19357) | Bucket cache no longer L2 for LRU cache | Major | . | +| [HBASE-19359](https://issues.apache.org/jira/browse/HBASE-19359) | Revisit the default config of hbase client retries number | Major | . | +| [HBASE-19092](https://issues.apache.org/jira/browse/HBASE-19092) | Make Tag IA.LimitedPrivate and expose for CPs | Critical | Coprocessors | +| [HBASE-19187](https://issues.apache.org/jira/browse/HBASE-19187) | Remove option to create on heap bucket cache | Minor | regionserver | +| [HBASE-19033](https://issues.apache.org/jira/browse/HBASE-19033) | Allow CP users to change versions and TTL before opening StoreScanner | Blocker | Coprocessors | +| [HBASE-19047](https://issues.apache.org/jira/browse/HBASE-19047) | CP exposed Scanner types should not extend Shipper | Critical | Coprocessors | +| [HBASE-18905](https://issues.apache.org/jira/browse/HBASE-18905) | Allow CPs to request flush on Region and know the completion of the requested flush | Major | Coprocessors | +| [HBASE-18410](https://issues.apache.org/jira/browse/HBASE-18410) | FilterList Improvement. | Major | Filters | +| [HBASE-18893](https://issues.apache.org/jira/browse/HBASE-18893) | Remove Add/Modify/DeleteColumnFamilyProcedure in favor of using ModifyTableProcedure | Major | Coprocessors, master | +| [HBASE-19067](https://issues.apache.org/jira/browse/HBASE-19067) | Do not expose getHDFSBlockDistribution in StoreFile | Major | Coprocessors | +| [HBASE-18989](https://issues.apache.org/jira/browse/HBASE-18989) | Polish the compaction related CP hooks | Major | Compaction, Coprocessors | +| [HBASE-19046](https://issues.apache.org/jira/browse/HBASE-19046) | RegionObserver#postCompactSelection Avoid passing shaded ImmutableList param | Major | Coprocessors | +| [HBASE-19001](https://issues.apache.org/jira/browse/HBASE-19001) | Remove the hooks in RegionObserver which are designed to construct a StoreScanner which is marked as IA.Private | Major | Coprocessors | +| [HBASE-14247](https://issues.apache.org/jira/browse/HBASE-14247) | Separate the old WALs into different regionserver directories | Critical | wal | +| [HBASE-18183](https://issues.apache.org/jira/browse/HBASE-18183) | Region interface cleanup for CP expose | Major | Coprocessors | +| [HBASE-18878](https://issues.apache.org/jira/browse/HBASE-18878) | Use Optional\ return types when T can be null | Major | Coprocessors | +| [HBASE-18649](https://issues.apache.org/jira/browse/HBASE-18649) | Deprecate KV Usage in MR to move to Cells in 3.0 | Major | API, mapreduce | +| [HBASE-18897](https://issues.apache.org/jira/browse/HBASE-18897) | Substitute MemStore for Memstore | Major | . | +| [HBASE-18883](https://issues.apache.org/jira/browse/HBASE-18883) | Upgrade to Curator 4.0 | Major | Client, dependencies | +| [HBASE-18839](https://issues.apache.org/jira/browse/HBASE-18839) | Apply RegionInfo to code base | Major | Coprocessors | +| [HBASE-18826](https://issues.apache.org/jira/browse/HBASE-18826) | Use HStore instead of Store in our own code base and remove unnecessary methods in Store interface | Major | Coprocessors | +| [HBASE-17732](https://issues.apache.org/jira/browse/HBASE-17732) | Coprocessor Design Improvements | Critical | Coprocessors | +| [HBASE-18298](https://issues.apache.org/jira/browse/HBASE-18298) | RegionServerServices Interface cleanup for CP expose | Critical | Coprocessors | +| [HBASE-16769](https://issues.apache.org/jira/browse/HBASE-16769) | Deprecate/remove PB references from MasterObserver and RegionServerObserver | Blocker | . | +| [HBASE-18859](https://issues.apache.org/jira/browse/HBASE-18859) | Purge PB from BulkLoadObserver | Major | Coprocessors | +| [HBASE-18731](https://issues.apache.org/jira/browse/HBASE-18731) | [compat 1-2] Mark protected methods of QuotaSettings that touch Protobuf internals as IA.Private | Major | API | +| [HBASE-18825](https://issues.apache.org/jira/browse/HBASE-18825) | Use HStoreFile instead of StoreFile in our own code base and remove unnecessary methods in StoreFile interface | Major | Coprocessors | +| [HBASE-18142](https://issues.apache.org/jira/browse/HBASE-18142) | Deletion of a cell deletes the previous versions too | Major | API, shell | +| [HBASE-18446](https://issues.apache.org/jira/browse/HBASE-18446) | Mark StoreFileScanner/StoreFileReader as IA.LimitedPrivate(Phoenix) | Critical | Coprocessors | +| [HBASE-18798](https://issues.apache.org/jira/browse/HBASE-18798) | Remove the unused methods in RegionServerObserver | Major | Coprocessors | +| [HBASE-18453](https://issues.apache.org/jira/browse/HBASE-18453) | CompactionRequest should not be exposed to user directly | Major | Coprocessors | +| [HBASE-18794](https://issues.apache.org/jira/browse/HBASE-18794) | Remove deprecated methods in MasterObserver | Major | Coprocessors | +| [HBASE-17823](https://issues.apache.org/jira/browse/HBASE-17823) | Migrate to Apache Yetus Audience Annotations | Major | API | +| [HBASE-18793](https://issues.apache.org/jira/browse/HBASE-18793) | Remove deprecated methods in RegionObserver | Major | Coprocessors | +| [HBASE-18733](https://issues.apache.org/jira/browse/HBASE-18733) | [compat 1-2] Hide WALKey | Major | API | +| [HBASE-16479](https://issues.apache.org/jira/browse/HBASE-16479) | Move WALEdit from hbase.regionserver.wal package to hbase.wal package | Major | wal | +| [HBASE-18783](https://issues.apache.org/jira/browse/HBASE-18783) | Declare the builder of ClusterStatus as IA.Private, and remove the Writables from ClusterStatus | Minor | . | +| [HBASE-18106](https://issues.apache.org/jira/browse/HBASE-18106) | Redo ProcedureInfo and LockInfo | Critical | proc-v2 | +| [HBASE-18780](https://issues.apache.org/jira/browse/HBASE-18780) | Remove HLogPrettyPrinter and hlog command | Minor | documentation, wal | +| [HBASE-18704](https://issues.apache.org/jira/browse/HBASE-18704) | Upgrade hbase to commons-collections 4 | Major | dependencies | +| [HBASE-15607](https://issues.apache.org/jira/browse/HBASE-15607) | Remove PB references from Admin for 2.0 | Blocker | . | +| [HBASE-18736](https://issues.apache.org/jira/browse/HBASE-18736) | Cleanup the HTD/HCD for Admin | Major | . | +| [HBASE-18577](https://issues.apache.org/jira/browse/HBASE-18577) | shaded client includes several non-relocated third party dependencies | Critical | Client | +| [HBASE-3935](https://issues.apache.org/jira/browse/HBASE-3935) | HServerLoad.storefileIndexSizeMB should be changed to storefileIndexSizeKB | Major | . | +| [HBASE-15982](https://issues.apache.org/jira/browse/HBASE-15982) | Interface ReplicationEndpoint extends Guava's Service | Blocker | . | +| [HBASE-18546](https://issues.apache.org/jira/browse/HBASE-18546) | Always overwrite the TS for Append/Increment unless no existing cells are found | Critical | API, Client | +| [HBASE-17442](https://issues.apache.org/jira/browse/HBASE-17442) | Move most of the replication related classes from hbase-client to hbase-replication package | Critical | build, Replication | +| [HBASE-18511](https://issues.apache.org/jira/browse/HBASE-18511) | Default no regions on master | Blocker | master | +| [HBASE-18528](https://issues.apache.org/jira/browse/HBASE-18528) | DON'T allow user to modify the passed table/column descriptor | Critical | Coprocessors, master | +| [HBASE-18469](https://issues.apache.org/jira/browse/HBASE-18469) | Correct RegionServer metric of totalRequestCount | Critical | metrics, regionserver | +| [HBASE-18500](https://issues.apache.org/jira/browse/HBASE-18500) | Performance issue: Don't use BufferedMutator for HTable's put method | Major | . | +| [HBASE-17125](https://issues.apache.org/jira/browse/HBASE-17125) | Inconsistent result when use filter to read data | Critical | . | +| [HBASE-18517](https://issues.apache.org/jira/browse/HBASE-18517) | limit max log message width in log4j | Major | . | +| [HBASE-18502](https://issues.apache.org/jira/browse/HBASE-18502) | Change MasterObserver to use TableDescriptor and ColumnFamilyDescriptor | Critical | Coprocessors, master | +| [HBASE-18374](https://issues.apache.org/jira/browse/HBASE-18374) | RegionServer Metrics improvements | Major | . | +| [HBASE-17908](https://issues.apache.org/jira/browse/HBASE-17908) | Upgrade guava | Critical | dependencies | +| [HBASE-18161](https://issues.apache.org/jira/browse/HBASE-18161) | Incremental Load support for Multiple-Table HFileOutputFormat | Minor | . | +| [HBASE-18267](https://issues.apache.org/jira/browse/HBASE-18267) | The result from the postAppend is ignored | Major | Coprocessors | +| [HBASE-18241](https://issues.apache.org/jira/browse/HBASE-18241) | Change client.Table, client.Admin, Region, Store, and HBaseTestingUtility to not use HTableDescriptor or HColumnDescriptor | Critical | Client | +| [HBASE-18038](https://issues.apache.org/jira/browse/HBASE-18038) | Rename StoreFile to HStoreFile and add a StoreFile interface for CP | Critical | Coprocessors, regionserver | +| [HBASE-16196](https://issues.apache.org/jira/browse/HBASE-16196) | Update jruby to a newer version. | Critical | dependencies, shell | +| [HBASE-14614](https://issues.apache.org/jira/browse/HBASE-14614) | Procedure v2: Core Assignment Manager | Major | proc-v2 | +| [HBASE-3462](https://issues.apache.org/jira/browse/HBASE-3462) | Fix table.jsp in regards to splitting a region/table with an optional splitkey | Major | master | +| [HBASE-11013](https://issues.apache.org/jira/browse/HBASE-11013) | Clone Snapshots on Secure Cluster Should provide option to apply Retained User Permissions | Major | snapshots | +| [HBASE-15296](https://issues.apache.org/jira/browse/HBASE-15296) | Break out writer and reader from StoreFile | Major | regionserver | +| [HBASE-15199](https://issues.apache.org/jira/browse/HBASE-15199) | Move jruby jar so only on hbase-shell module classpath; currently globally available | Critical | dependencies, jruby, shell | +| [HBASE-18009](https://issues.apache.org/jira/browse/HBASE-18009) | Move RpcServer.Call to a separated file | Major | IPC/RPC | +| [HBASE-17956](https://issues.apache.org/jira/browse/HBASE-17956) | Raw scan should ignore TTL | Major | scan | +| [HBASE-17914](https://issues.apache.org/jira/browse/HBASE-17914) | Create a new reader instead of cloning a new StoreFile when compaction | Major | Compaction, regionserver | +| [HBASE-17595](https://issues.apache.org/jira/browse/HBASE-17595) | Add partial result support for small/limited scan | Critical | asyncclient, Client, scan | +| [HBASE-17584](https://issues.apache.org/jira/browse/HBASE-17584) | Expose ScanMetrics with ResultScanner rather than Scan | Major | Client, mapreduce, scan | +| [HBASE-17716](https://issues.apache.org/jira/browse/HBASE-17716) | Formalize Scan Metric names | Minor | metrics | +| [HBASE-17312](https://issues.apache.org/jira/browse/HBASE-17312) | [JDK8] Use default method for Observer Coprocessors | Major | Coprocessors | +| [HBASE-17647](https://issues.apache.org/jira/browse/HBASE-17647) | OffheapKeyValue#heapSize() implementation is wrong | Major | regionserver | +| [HBASE-17472](https://issues.apache.org/jira/browse/HBASE-17472) | Correct the semantic of permission grant | Major | Admin | +| [HBASE-17599](https://issues.apache.org/jira/browse/HBASE-17599) | Use mayHaveMoreCellsInRow instead of isPartial | Major | Client, scan | +| [HBASE-17508](https://issues.apache.org/jira/browse/HBASE-17508) | Unify the implementation of small scan and regular scan for sync client | Major | Client, scan | +| [HBASE-12894](https://issues.apache.org/jira/browse/HBASE-12894) | Upgrade Jetty to 9.2.6 | Critical | REST, UI | +| [HBASE-16786](https://issues.apache.org/jira/browse/HBASE-16786) | Procedure V2 - Move ZK-lock's uses to Procedure framework locks (LockProcedure) | Major | . | +| [HBASE-17470](https://issues.apache.org/jira/browse/HBASE-17470) | Remove merge region code from region server | Major | regionserver | +| [HBASE-5401](https://issues.apache.org/jira/browse/HBASE-5401) | PerformanceEvaluation generates 10x the number of expected mappers | Major | test | +| [HBASE-17221](https://issues.apache.org/jira/browse/HBASE-17221) | Abstract out an interface for RpcServer.Call | Major | . | +| [HBASE-16119](https://issues.apache.org/jira/browse/HBASE-16119) | Procedure v2 - Reimplement merge | Major | proc-v2, Region Assignment | +| [HBASE-17132](https://issues.apache.org/jira/browse/HBASE-17132) | Cleanup deprecated code for WAL | Major | wal | +| [HBASE-17017](https://issues.apache.org/jira/browse/HBASE-17017) | Remove the current per-region latency histogram metrics | Major | metrics | +| [HBASE-15513](https://issues.apache.org/jira/browse/HBASE-15513) | hbase.hregion.memstore.chunkpool.maxsize is 0.0 by default | Major | . | +| [HBASE-16972](https://issues.apache.org/jira/browse/HBASE-16972) | Log more details for Scan#next request when responseTooSlow | Major | Operability | +| [HBASE-16765](https://issues.apache.org/jira/browse/HBASE-16765) | New SteppingRegionSplitPolicy, avoid too aggressive spread of regions for small tables. | Critical | . | +| [HBASE-16747](https://issues.apache.org/jira/browse/HBASE-16747) | Track memstore data size and heap overhead separately | Major | regionserver | +| [HBASE-14551](https://issues.apache.org/jira/browse/HBASE-14551) | Procedure v2 - Reimplement split | Minor | proc-v2 | +| [HBASE-16729](https://issues.apache.org/jira/browse/HBASE-16729) | Define the behavior of (default) empty FilterList | Trivial | . | +| [HBASE-16799](https://issues.apache.org/jira/browse/HBASE-16799) | CP exposed Store should not expose unwanted APIs | Major | . | +| [HBASE-16117](https://issues.apache.org/jira/browse/HBASE-16117) | Fix Connection leak in mapred.TableOutputFormat | Major | mapreduce | +| [HBASE-15638](https://issues.apache.org/jira/browse/HBASE-15638) | Shade protobuf | Critical | Protobufs | +| [HBASE-16257](https://issues.apache.org/jira/browse/HBASE-16257) | Move staging dir to be under hbase root dir | Blocker | . | +| [HBASE-16650](https://issues.apache.org/jira/browse/HBASE-16650) | Wrong usage of BlockCache eviction stat for heap memory tuning | Major | . | +| [HBASE-16598](https://issues.apache.org/jira/browse/HBASE-16598) | Enable zookeeper useMulti always and clean up in HBase code | Major | . | +| [HBASE-15297](https://issues.apache.org/jira/browse/HBASE-15297) | error message is wrong when a wrong namspace is specified in grant in hbase shell | Minor | shell | +| [HBASE-16340](https://issues.apache.org/jira/browse/HBASE-16340) | ensure no Xerces jars included | Critical | dependencies | +| [HBASE-16321](https://issues.apache.org/jira/browse/HBASE-16321) | Ensure findbugs jsr305 jar isn't present | Blocker | dependencies | +| [HBASE-16355](https://issues.apache.org/jira/browse/HBASE-16355) | hbase-client dependency on hbase-common test-jar should be test scope | Major | Client, dependencies | +| [HBASE-16186](https://issues.apache.org/jira/browse/HBASE-16186) | Fix AssignmentManager MBean name | Major | master | +| [HBASE-13823](https://issues.apache.org/jira/browse/HBASE-13823) | Procedure V2: unnecessaery operations on AssignmentManager#recoverTableInDisablingState() and recoverTableInEnablingState() | Major | master, proc-v2 | +| [HBASE-15950](https://issues.apache.org/jira/browse/HBASE-15950) | Fix memstore size estimates to be more tighter | Major | . | +| [HBASE-15971](https://issues.apache.org/jira/browse/HBASE-15971) | Regression: Random Read/WorkloadC slower in 1.x than 0.98 | Critical | rpc | +| [HBASE-15875](https://issues.apache.org/jira/browse/HBASE-15875) | Remove HTable references and HTableInterface | Major | . | +| [HBASE-15610](https://issues.apache.org/jira/browse/HBASE-15610) | Remove deprecated HConnection for 2.0 thus removing all PB references for 2.0 | Blocker | . | +| [HBASE-15876](https://issues.apache.org/jira/browse/HBASE-15876) | Remove doBulkLoad(Path hfofDir, final HTable table) though it has not been through a full deprecation cycle | Blocker | . | +| [HBASE-15575](https://issues.apache.org/jira/browse/HBASE-15575) | Rename table DDL \*Handler methods in MasterObserver to more meaningful names | Minor | Coprocessors | +| [HBASE-15481](https://issues.apache.org/jira/browse/HBASE-15481) | Add pre/post roll to WALObserver | Trivial | . | +| [HBASE-15568](https://issues.apache.org/jira/browse/HBASE-15568) | Procedure V2 - Remove CreateTableHandler in HBase Apache 2.0 release | Major | master, proc-v2 | +| [HBASE-15521](https://issues.apache.org/jira/browse/HBASE-15521) | Procedure V2 - RestoreSnapshot and CloneSnapshot | Major | Client, master, proc-v2 | +| [HBASE-11393](https://issues.apache.org/jira/browse/HBASE-11393) | Replication TableCfs should be a PB object rather than a string | Major | Replication | +| [HBASE-15265](https://issues.apache.org/jira/browse/HBASE-15265) | Implement an asynchronous FSHLog | Major | wal | +| [HBASE-15323](https://issues.apache.org/jira/browse/HBASE-15323) | Hbase Rest CheckAndDeleteAPi should be able to delete more cells | Major | hbase | +| [HBASE-15377](https://issues.apache.org/jira/browse/HBASE-15377) | Per-RS Get metric is time based, per-region metric is size-based | Major | . | +| [HBASE-13963](https://issues.apache.org/jira/browse/HBASE-13963) | avoid leaking jdk.tools | Critical | build, documentation | +| [HBASE-15376](https://issues.apache.org/jira/browse/HBASE-15376) | ScanNext metric is size-based while every other per-operation metric is time based | Major | . | +| [HBASE-15290](https://issues.apache.org/jira/browse/HBASE-15290) | Hbase Rest CheckAndAPI should save other cells along with compared cell | Major | hbase | +| [HBASE-15100](https://issues.apache.org/jira/browse/HBASE-15100) | Master WALProcs still never clean up | Blocker | master, proc-v2 | +| [HBASE-15111](https://issues.apache.org/jira/browse/HBASE-15111) | "hbase version" should write to stdout | Trivial | util | +| [HBASE-14888](https://issues.apache.org/jira/browse/HBASE-14888) | ClusterSchema: Add Namespace Operations | Major | API | +| [HBASE-15018](https://issues.apache.org/jira/browse/HBASE-15018) | Inconsistent way of handling TimeoutException in the rpc client implementations | Major | Client, IPC/RPC | +| [HBASE-14205](https://issues.apache.org/jira/browse/HBASE-14205) | RegionCoprocessorHost System.nanoTime() performance bottleneck | Critical | Coprocessors, Performance, regionserver | +| [HBASE-12751](https://issues.apache.org/jira/browse/HBASE-12751) | Allow RowLock to be reader writer | Major | regionserver | +| [HBASE-13706](https://issues.apache.org/jira/browse/HBASE-13706) | CoprocessorClassLoader should not exempt Hive classes | Minor | Coprocessors | +| [HBASE-13954](https://issues.apache.org/jira/browse/HBASE-13954) | Remove HTableInterface#getRowOrBefore related server side code | Major | API | +| [HBASE-12296](https://issues.apache.org/jira/browse/HBASE-12296) | Filters should work with ByteBufferedCell | Major | regionserver, Scanners | +| [HBASE-14027](https://issues.apache.org/jira/browse/HBASE-14027) | Clean up netty dependencies | Major | build | +| [HBASE-7782](https://issues.apache.org/jira/browse/HBASE-7782) | HBaseTestingUtility.truncateTable() not acting like CLI | Minor | test | +| [HBASE-14047](https://issues.apache.org/jira/browse/HBASE-14047) | Cleanup deprecated APIs from Cell class | Major | Client | +| [HBASE-13849](https://issues.apache.org/jira/browse/HBASE-13849) | Remove restore and clone snapshot from the WebUI | Major | snapshots | +| [HBASE-13646](https://issues.apache.org/jira/browse/HBASE-13646) | HRegion#execService should not try to build incomplete messages | Major | Coprocessors, regionserver | +| [HBASE-13983](https://issues.apache.org/jira/browse/HBASE-13983) | Doc how the oddball HTable methods getStartKey, getEndKey, etc. will be removed in 2.0.0 | Minor | documentation | +| [HBASE-13214](https://issues.apache.org/jira/browse/HBASE-13214) | Remove deprecated and unused methods from HTable class | Major | API | +| [HBASE-13843](https://issues.apache.org/jira/browse/HBASE-13843) | Fix internal constant text in ReplicationManager.java | Trivial | master | +| [HBASE-13375](https://issues.apache.org/jira/browse/HBASE-13375) | Provide HBase superuser higher priority over other users in the RPC handling | Major | IPC/RPC | +| [HBASE-13636](https://issues.apache.org/jira/browse/HBASE-13636) | Remove deprecation for HBASE-4072 (Reading of zoo.cfg) | Major | . | +| [HBASE-10800](https://issues.apache.org/jira/browse/HBASE-10800) | Use CellComparator instead of KVComparator | Major | . | +| [HBASE-13118](https://issues.apache.org/jira/browse/HBASE-13118) | [PE] Add being able to write many columns | Major | test | +| [HBASE-12990](https://issues.apache.org/jira/browse/HBASE-12990) | MetaScanner should be replaced by MetaTableAccessor | Major | Client | +| [HBASE-13373](https://issues.apache.org/jira/browse/HBASE-13373) | Squash HFileReaderV3 together with HFileReaderV2 and AbstractHFileReader; ditto for Scanners and BlockReader, etc. | Major | . | +| [HBASE-10728](https://issues.apache.org/jira/browse/HBASE-10728) | get\_counter value is never used. | Major | . | +| [HBASE-13298](https://issues.apache.org/jira/browse/HBASE-13298) | Clarify if Table.{set\|get}WriteBufferSize() is deprecated or not | Critical | API | +| [HBASE-13248](https://issues.apache.org/jira/browse/HBASE-13248) | Make HConnectionImplementation top-level class. | Major | API | +| [HBASE-13198](https://issues.apache.org/jira/browse/HBASE-13198) | Remove HConnectionManager | Major | API | +| [HBASE-12586](https://issues.apache.org/jira/browse/HBASE-12586) | Task 6 & 7 from HBASE-9117, delete all public HTable constructors and delete ConnectionManager#{delete,get}Connection | Major | . | +| [HBASE-13171](https://issues.apache.org/jira/browse/HBASE-13171) | Change AccessControlClient methods to accept connection object to reduce setup time. | Minor | . | +| [HBASE-6778](https://issues.apache.org/jira/browse/HBASE-6778) | Deprecate Chore; its a thread per task when we should have one thread to do all tasks | Major | . | +| [HBASE-12684](https://issues.apache.org/jira/browse/HBASE-12684) | Add new AsyncRpcClient | Major | Client | +| [HBASE-10378](https://issues.apache.org/jira/browse/HBASE-10378) | Divide HLog interface into User and Implementor specific interfaces | Major | wal | +| [HBASE-12111](https://issues.apache.org/jira/browse/HBASE-12111) | Remove deprecated APIs from Mutation(s) | Major | Client | +| [HBASE-12084](https://issues.apache.org/jira/browse/HBASE-12084) | Remove deprecated APIs from Result | Major | Client | +| [HBASE-12048](https://issues.apache.org/jira/browse/HBASE-12048) | Remove deprecated APIs from Filter | Major | regionserver | +| [HBASE-11556](https://issues.apache.org/jira/browse/HBASE-11556) | Move HTablePool to hbase-thrift module. | Major | Thrift | +| [HBASE-4072](https://issues.apache.org/jira/browse/HBASE-4072) | Deprecate/disable and remove support for reading ZooKeeper zoo.cfg files from the classpath | Major | . | + + +### IMPORTANT ISSUES: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-15780](https://issues.apache.org/jira/browse/HBASE-15780) | Expose AuthUtil as IA.Public | Critical | API, security | +| [HBASE-15322](https://issues.apache.org/jira/browse/HBASE-15322) | Operations using Unsafe path broken for platforms not having sun.misc.Unsafe | Critical | hbase | +| [HBASE-15125](https://issues.apache.org/jira/browse/HBASE-15125) | HBaseFsck's adoptHdfsOrphan function creates region with wrong end key boundary | Major | hbck | + + +### NEW FEATURES: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-19950](https://issues.apache.org/jira/browse/HBASE-19950) | Introduce a ColumnValueFilter | Minor | Filters | +| [HBASE-19844](https://issues.apache.org/jira/browse/HBASE-19844) | Shell should support flush by regionserver | Minor | shell | +| [HBASE-19886](https://issues.apache.org/jira/browse/HBASE-19886) | Display maintenance mode in shell, web UI | Major | . | +| [HBASE-19528](https://issues.apache.org/jira/browse/HBASE-19528) | Major Compaction Tool | Major | . | +| [HBASE-19897](https://issues.apache.org/jira/browse/HBASE-19897) | RowMutations should follow the fluent pattern | Minor | . | +| [HBASE-4224](https://issues.apache.org/jira/browse/HBASE-4224) | Need a flush by regionserver rather than by table option | Major | . | +| [HBASE-15321](https://issues.apache.org/jira/browse/HBASE-15321) | Ability to open a HRegion from hdfs snapshot. | Major | . | +| [HBASE-19799](https://issues.apache.org/jira/browse/HBASE-19799) | Add web UI to rsgroup | Major | rsgroup, UI | +| [HBASE-19326](https://issues.apache.org/jira/browse/HBASE-19326) | Remove decommissioned servers from rsgroup | Major | rsgroup | +| [HBASE-19189](https://issues.apache.org/jira/browse/HBASE-19189) | Ad-hoc test job for running a subset of tests lots of times | Major | build | +| [HBASE-19103](https://issues.apache.org/jira/browse/HBASE-19103) | Add BigDecimalComparator for filter | Minor | Client | +| [HBASE-18171](https://issues.apache.org/jira/browse/HBASE-18171) | Scanning cursor for async client | Major | . | +| [HBASE-18875](https://issues.apache.org/jira/browse/HBASE-18875) | Thrift server supports read-only mode | Major | Thrift | +| [HBASE-14417](https://issues.apache.org/jira/browse/HBASE-14417) | Incremental backup and bulk loading | Blocker | . | +| [HBASE-18131](https://issues.apache.org/jira/browse/HBASE-18131) | Add an hbase shell command to clear deadserver list in ServerManager | Major | Operability | +| [HBASE-15806](https://issues.apache.org/jira/browse/HBASE-15806) | An endpoint-based export tool | Critical | Coprocessors, tooling | +| [HBASE-14135](https://issues.apache.org/jira/browse/HBASE-14135) | HBase Backup/Restore Phase 3: Merge backup images | Critical | . | +| [HBASE-15134](https://issues.apache.org/jira/browse/HBASE-15134) | Add visibility into Flush and Compaction queues | Major | Compaction, metrics, regionserver | +| [HBASE-15968](https://issues.apache.org/jira/browse/HBASE-15968) | New behavior of versions considering mvcc and ts rather than ts only | Major | . | +| [HBASE-15943](https://issues.apache.org/jira/browse/HBASE-15943) | Add page displaying JVM process metrics | Major | Operability, UI | +| [HBASE-17928](https://issues.apache.org/jira/browse/HBASE-17928) | Shell tool to clear compaction queues | Major | Compaction, Operability | +| [HBASE-18226](https://issues.apache.org/jira/browse/HBASE-18226) | Disable reverse DNS lookup at HMaster and use the hostname provided by RegionServer | Major | . | +| [HBASE-13784](https://issues.apache.org/jira/browse/HBASE-13784) | Add Async Client Table API | Major | . | +| [HBASE-17849](https://issues.apache.org/jira/browse/HBASE-17849) | PE tool random read is not totally random | Major | Performance, test | +| [HBASE-15576](https://issues.apache.org/jira/browse/HBASE-15576) | Scanning cursor to prevent blocking long time on ResultScanner.next() | Major | . | +| [HBASE-16961](https://issues.apache.org/jira/browse/HBASE-16961) | FileSystem Quotas | Major | . | +| [HBASE-17757](https://issues.apache.org/jira/browse/HBASE-17757) | Unify blocksize after encoding to decrease memory fragment | Major | . | +| [HBASE-17542](https://issues.apache.org/jira/browse/HBASE-17542) | Move backup system table into separate namespace | Major | . | +| [HBASE-14141](https://issues.apache.org/jira/browse/HBASE-14141) | HBase Backup/Restore Phase 3: Filter WALs on backup to include only edits from backed up tables | Blocker | . | +| [HBASE-17758](https://issues.apache.org/jira/browse/HBASE-17758) | [RSGROUP] Add shell command to move servers and tables at the same time | Major | rsgroup | +| [HBASE-17737](https://issues.apache.org/jira/browse/HBASE-17737) | Thrift2 proxy should support scan timeRange per column family | Major | Thrift | +| [HBASE-16981](https://issues.apache.org/jira/browse/HBASE-16981) | Expand Mob Compaction Partition policy from daily to weekly, monthly | Major | mob | +| [HBASE-9774](https://issues.apache.org/jira/browse/HBASE-9774) | HBase native metrics and metric collection for coprocessors | Major | Coprocessors, metrics | +| [HBASE-17174](https://issues.apache.org/jira/browse/HBASE-17174) | Refactor the AsyncProcess, BufferedMutatorImpl, and HTable | Minor | . | +| [HBASE-15432](https://issues.apache.org/jira/browse/HBASE-15432) | TableInputFormat - support multi column family scan | Major | . | +| [HBASE-17181](https://issues.apache.org/jira/browse/HBASE-17181) | Let HBase thrift2 support TThreadedSelectorServer | Minor | Thrift | +| [HBASE-17151](https://issues.apache.org/jira/browse/HBASE-17151) | New API to create HFile.Reader without instantiating block cache | Major | . | +| [HBASE-16463](https://issues.apache.org/jira/browse/HBASE-16463) | Improve transparent table/CF encryption with Commons Crypto | Major | encryption | +| [HBASE-16751](https://issues.apache.org/jira/browse/HBASE-16751) | Add tuning information to HBase Book | Minor | . | +| [HBASE-16677](https://issues.apache.org/jira/browse/HBASE-16677) | Add table size (total store file size) to table page | Minor | website | +| [HBASE-16447](https://issues.apache.org/jira/browse/HBASE-16447) | Replication by namespaces config in peer | Critical | Replication | +| [HBASE-16388](https://issues.apache.org/jira/browse/HBASE-16388) | Prevent client threads being blocked by only one slow region server | Major | . | +| [HBASE-16213](https://issues.apache.org/jira/browse/HBASE-16213) | A new HFileBlock structure for fast random get | Major | Performance | +| [HBASE-12721](https://issues.apache.org/jira/browse/HBASE-12721) | Create Docker container cluster infrastructure to enable better testing | Major | build, community, documentation, test | +| [HBASE-3727](https://issues.apache.org/jira/browse/HBASE-3727) | MultiHFileOutputFormat | Minor | . | +| [HBASE-15881](https://issues.apache.org/jira/browse/HBASE-15881) | Allow BZIP2 compression | Major | HFile | +| [HBASE-10358](https://issues.apache.org/jira/browse/HBASE-10358) | Shell changes for setting consistency per request | Major | shell | +| [HBASE-15892](https://issues.apache.org/jira/browse/HBASE-15892) | submit-patch.py: Single command line to make patch, upload it to jira, and update review board | Trivial | . | +| [HBASE-15228](https://issues.apache.org/jira/browse/HBASE-15228) | Add the methods to RegionObserver to trigger start/complete restoring WALs | Major | Coprocessors | +| [HBASE-15847](https://issues.apache.org/jira/browse/HBASE-15847) | VerifyReplication prefix filtering | Major | Replication | +| [HBASE-15798](https://issues.apache.org/jira/browse/HBASE-15798) | Add Async RpcChannels to all RpcClients | Major | . | +| [HBASE-15281](https://issues.apache.org/jira/browse/HBASE-15281) | Allow the FileSystem inside HFileSystem to be wrapped | Major | Filesystem Integration, hbase | +| [HBASE-15592](https://issues.apache.org/jira/browse/HBASE-15592) | Print Procedure WAL content | Major | . | +| [HBASE-6721](https://issues.apache.org/jira/browse/HBASE-6721) | RegionServer Group based Assignment | Major | regionserver | +| [HBASE-15136](https://issues.apache.org/jira/browse/HBASE-15136) | Explore different queuing behaviors while busy | Critical | IPC/RPC | +| [HBASE-15181](https://issues.apache.org/jira/browse/HBASE-15181) | A simple implementation of date based tiered compaction | Major | Compaction | +| [HBASE-13259](https://issues.apache.org/jira/browse/HBASE-13259) | mmap() based BucketCache IOEngine | Critical | BlockCache | +| [HBASE-15135](https://issues.apache.org/jira/browse/HBASE-15135) | Add metrics for storefile age | Major | . | +| [HBASE-14355](https://issues.apache.org/jira/browse/HBASE-14355) | Scan different TimeRange for each column family | Major | Client, regionserver, Scanners | +| [HBASE-11262](https://issues.apache.org/jira/browse/HBASE-11262) | Avoid empty columns while doing bulk-load | Major | . | +| [HBASE-15036](https://issues.apache.org/jira/browse/HBASE-15036) | Update HBase Spark documentation to include bulk load with thin records | Major | . | +| [HBASE-14980](https://issues.apache.org/jira/browse/HBASE-14980) | Project Astro | Major | documentation | +| [HBASE-13153](https://issues.apache.org/jira/browse/HBASE-13153) | Bulk Loaded HFile Replication | Major | Replication | +| [HBASE-12911](https://issues.apache.org/jira/browse/HBASE-12911) | Client-side metrics | Major | Client, Operability, Performance | +| [HBASE-14529](https://issues.apache.org/jira/browse/HBASE-14529) | Respond to SIGHUP to reload config | Major | Operability | +| [HBASE-14459](https://issues.apache.org/jira/browse/HBASE-14459) | Add request and response sizes metrics | Major | metrics | +| [HBASE-14456](https://issues.apache.org/jira/browse/HBASE-14456) | Implement a namespace-based region grouping strategy for RegionGroupingProvider | Major | . | +| [HBASE-14154](https://issues.apache.org/jira/browse/HBASE-14154) | DFS Replication should be configurable at column family level | Minor | . | +| [HBASE-13702](https://issues.apache.org/jira/browse/HBASE-13702) | ImportTsv: Add dry-run functionality and log bad rows | Major | . | +| [HBASE-13639](https://issues.apache.org/jira/browse/HBASE-13639) | SyncTable - rsync for HBase tables | Major | mapreduce, Operability, tooling | +| [HBASE-10070](https://issues.apache.org/jira/browse/HBASE-10070) | HBase read high-availability using timeline-consistent region replicas | Major | Admin, API, LatencyResilience | +| [HBASE-13356](https://issues.apache.org/jira/browse/HBASE-13356) | HBase should provide an InputFormat supporting multiple scans in mapreduce jobs over snapshots | Minor | mapreduce | +| [HBASE-5980](https://issues.apache.org/jira/browse/HBASE-5980) | Scanner responses from RS should include metrics on rows/KVs filtered | Minor | Client, metrics, Operability, regionserver | +| [HBASE-13698](https://issues.apache.org/jira/browse/HBASE-13698) | Add RegionLocator methods to Thrift2 proxy. | Major | Thrift | +| [HBASE-13071](https://issues.apache.org/jira/browse/HBASE-13071) | Hbase Streaming Scan Feature | Major | . | +| [HBASE-13090](https://issues.apache.org/jira/browse/HBASE-13090) | Progress heartbeats for long running scanners | Major | . | +| [HBASE-13412](https://issues.apache.org/jira/browse/HBASE-13412) | Region split decisions should have jitter | Major | regionserver | +| [HBASE-12972](https://issues.apache.org/jira/browse/HBASE-12972) | Region, a supportable public/evolving subset of HRegion | Major | . | +| [HBASE-13170](https://issues.apache.org/jira/browse/HBASE-13170) | Allow block cache to be external | Major | io | +| [HBASE-5238](https://issues.apache.org/jira/browse/HBASE-5238) | Add a log4j category for all edits to META/ROOT | Minor | regionserver | +| [HBASE-13063](https://issues.apache.org/jira/browse/HBASE-13063) | Allow to turn off memstore replication for region replicas | Minor | regionserver, Replication | +| [HBASE-13057](https://issues.apache.org/jira/browse/HBASE-13057) | Provide client utility to easily enable and disable table replication | Major | Replication | +| [HBASE-12869](https://issues.apache.org/jira/browse/HBASE-12869) | Add a REST API implementation of the ClusterManager interface | Major | integration tests | +| [HBASE-12944](https://issues.apache.org/jira/browse/HBASE-12944) | Support patches to branches in precommit jenkins build | Major | . | +| [HBASE-12268](https://issues.apache.org/jira/browse/HBASE-12268) | Add support for Scan.setRowPrefixFilter to shell | Major | shell | +| [HBASE-5162](https://issues.apache.org/jira/browse/HBASE-5162) | Basic client pushback mechanism | Major | . | + + +### IMPROVEMENTS: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-19994](https://issues.apache.org/jira/browse/HBASE-19994) | Create a new class for RPC throttling exception, make it retryable. | Major | . | +| [HBASE-20409](https://issues.apache.org/jira/browse/HBASE-20409) | Set hbase.client.meta.operation.timeout in TestClientOperationTimeout | Trivial | test | +| [HBASE-17449](https://issues.apache.org/jira/browse/HBASE-17449) | Add explicit document on different timeout settings | Critical | documentation | +| [HBASE-18784](https://issues.apache.org/jira/browse/HBASE-18784) | Use of filesystem that requires hflush / hsync / append / etc should query outputstream capabilities | Major | Filesystem Integration | +| [HBASE-15466](https://issues.apache.org/jira/browse/HBASE-15466) | precommit should not run all java goals when given a docs-only patch | Major | build | +| [HBASE-20135](https://issues.apache.org/jira/browse/HBASE-20135) | NullPointerException during reading bloom filter when upgraded from hbase-1 to hbase-2 | Minor | . | +| [HBASE-17165](https://issues.apache.org/jira/browse/HBASE-17165) | Add retry to LoadIncrementalHFiles tool | Critical | hbase, HFile, tooling | +| [HBASE-18467](https://issues.apache.org/jira/browse/HBASE-18467) | nightly job needs to run all stages and then comment on jira | Critical | community, test | +| [HBASE-17448](https://issues.apache.org/jira/browse/HBASE-17448) | Export metrics from RecoverableZooKeeper | Major | Zookeeper | +| [HBASE-20055](https://issues.apache.org/jira/browse/HBASE-20055) | Remove declaration of un-thrown exceptions and unused setRegionStateBackToOpen() from MergeTableRegionsProcedure | Minor | amv2 | +| [HBASE-18020](https://issues.apache.org/jira/browse/HBASE-18020) | Update API Compliance Checker to Incorporate Improvements Done in Hadoop | Major | API, community | +| [HBASE-20065](https://issues.apache.org/jira/browse/HBASE-20065) | Revisit the timestamp usage in MetaTableAccessor | Major | . | +| [HBASE-18294](https://issues.apache.org/jira/browse/HBASE-18294) | Reduce global heap pressure: flush based on heap occupancy | Major | . | +| [HBASE-19680](https://issues.apache.org/jira/browse/HBASE-19680) | BufferedMutatorImpl#mutate should wait the result from AP in order to throw the failed mutations | Major | . | +| [HBASE-19988](https://issues.apache.org/jira/browse/HBASE-19988) | HRegion#lockRowsAndBuildMiniBatch() is too chatty when interrupted while waiting for a row lock | Minor | amv2 | +| [HBASE-19915](https://issues.apache.org/jira/browse/HBASE-19915) | From split/ merge procedures daughter/ merged regions get created in OFFLINE state | Major | . | +| [HBASE-19917](https://issues.apache.org/jira/browse/HBASE-19917) | Improve RSGroupBasedLoadBalancer#filterServers() to be more efficient | Minor | rsgroup | +| [HBASE-19904](https://issues.apache.org/jira/browse/HBASE-19904) | Break dependency of WAL constructor on Replication | Major | Replication, wal | +| [HBASE-19912](https://issues.apache.org/jira/browse/HBASE-19912) | The flag "writeToWAL" of Region#checkAndRowMutate is useless | Minor | . | +| [HBASE-19861](https://issues.apache.org/jira/browse/HBASE-19861) | Avoid using RPCs when querying table infos for master status pages | Major | UI | +| [HBASE-19770](https://issues.apache.org/jira/browse/HBASE-19770) | Add '--return-values' option to Shell to print return values of commands in interactive mode | Critical | shell | +| [HBASE-19823](https://issues.apache.org/jira/browse/HBASE-19823) | Make RawCellBuilderFactory LimitedPrivate.UNITTEST | Minor | . | +| [HBASE-19820](https://issues.apache.org/jira/browse/HBASE-19820) | Restore public constructor of MiniHBaseCluster (API compat) | Major | . | +| [HBASE-19736](https://issues.apache.org/jira/browse/HBASE-19736) | Remove BaseLogCleanerDelegate deprecated #isLogDeletable(FileStatus) and use #isFileDeletable(FileStatus) instead | Minor | . | +| [HBASE-19739](https://issues.apache.org/jira/browse/HBASE-19739) | Include thrift IDL files in HBase binary distribution | Minor | Thrift | +| [HBASE-19789](https://issues.apache.org/jira/browse/HBASE-19789) | Not exclude flaky tests from nightly builds | Major | . | +| [HBASE-19758](https://issues.apache.org/jira/browse/HBASE-19758) | Split TestHCM to several smaller tests | Major | test | +| [HBASE-19751](https://issues.apache.org/jira/browse/HBASE-19751) | Use RegionInfo directly instead of an identifier and a namespace when getting WAL | Major | wal | +| [HBASE-19139](https://issues.apache.org/jira/browse/HBASE-19139) | Create Async Admin methods for Clear Block Cache | Major | Admin | +| [HBASE-19702](https://issues.apache.org/jira/browse/HBASE-19702) | Improve RSGroupInfo constructors | Minor | . | +| [HBASE-19684](https://issues.apache.org/jira/browse/HBASE-19684) | BlockCacheKey toString Performance | Trivial | hbase | +| [HBASE-19358](https://issues.apache.org/jira/browse/HBASE-19358) | Improve the stability of splitting log when do fail over | Major | MTTR | +| [HBASE-19723](https://issues.apache.org/jira/browse/HBASE-19723) | hbase-thrift declares slf4j-api twice | Trivial | Thrift | +| [HBASE-19651](https://issues.apache.org/jira/browse/HBASE-19651) | Remove LimitInputStream | Minor | hbase | +| [HBASE-19473](https://issues.apache.org/jira/browse/HBASE-19473) | Miscellaneous changes to ClientScanner | Trivial | hbase | +| [HBASE-19613](https://issues.apache.org/jira/browse/HBASE-19613) | Miscellaneous changes to WALSplitter | Trivial | hbase | +| [HBASE-18806](https://issues.apache.org/jira/browse/HBASE-18806) | VerifyRep by snapshot need not to restore snapshot for each mapper | Major | Replication | +| [HBASE-18011](https://issues.apache.org/jira/browse/HBASE-18011) | Refactor RpcServer | Major | IPC/RPC | +| [HBASE-19641](https://issues.apache.org/jira/browse/HBASE-19641) | AsyncHBaseAdmin should use exponential backoff when polling the procedure result | Major | asyncclient, proc-v2 | +| [HBASE-19675](https://issues.apache.org/jira/browse/HBASE-19675) | Miscellaneous HStore Class Improvements | Minor | hbase | +| [HBASE-19683](https://issues.apache.org/jira/browse/HBASE-19683) | Remove Superfluous Methods From String Class | Trivial | hbase | +| [HBASE-19676](https://issues.apache.org/jira/browse/HBASE-19676) | CleanerChore logging improvements | Trivial | hbase | +| [HBASE-19486](https://issues.apache.org/jira/browse/HBASE-19486) | Periodically ensure records are not buffered too long by BufferedMutator | Major | Client | +| [HBASE-19679](https://issues.apache.org/jira/browse/HBASE-19679) | Superusers Logging and Data Structures | Trivial | hbase | +| [HBASE-19677](https://issues.apache.org/jira/browse/HBASE-19677) | Miscellaneous HFileCleaner Improvements | Trivial | hbase | +| [HBASE-19649](https://issues.apache.org/jira/browse/HBASE-19649) | Use singleton feature for ImmutableSegment | Trivial | . | +| [HBASE-8518](https://issues.apache.org/jira/browse/HBASE-8518) | Get rid of hbase.hstore.compaction.complete setting | Minor | . | +| [HBASE-19659](https://issues.apache.org/jira/browse/HBASE-19659) | Enable -x in make\_rc.sh so logs where it is in execution | Trivial | build | +| [HBASE-19647](https://issues.apache.org/jira/browse/HBASE-19647) | Logging cleanups; emit regionname when RegionTooBusyException inside RetriesExhausted... make netty connect/disconnect TRACE-level | Major | . | +| [HBASE-19545](https://issues.apache.org/jira/browse/HBASE-19545) | Replace getBytes(StandardCharsets.UTF\_8) with Bytes.toBytes | Minor | . | +| [HBASE-19615](https://issues.apache.org/jira/browse/HBASE-19615) | CompositeImmutableSegment ArrayList Instead of LinkedList | Trivial | hbase | +| [HBASE-19621](https://issues.apache.org/jira/browse/HBASE-19621) | Revisit the methods in ReplicationPeerConfigBuilder | Minor | . | +| [HBASE-19618](https://issues.apache.org/jira/browse/HBASE-19618) | Remove replicationQueuesClient.class/replicationQueues.class config and remove table based ReplicationQueuesClient/ReplicationQueues implementation | Major | . | +| [HBASE-19576](https://issues.apache.org/jira/browse/HBASE-19576) | Introduce builder for ReplicationPeerConfig and make it immutable | Major | . | +| [HBASE-19590](https://issues.apache.org/jira/browse/HBASE-19590) | Remove the duplicate code in deprecated ReplicationAdmin | Minor | . | +| [HBASE-19570](https://issues.apache.org/jira/browse/HBASE-19570) | Add hadoop3 tests to Nightly master/branch-2 runs | Critical | . | +| [HBASE-19571](https://issues.apache.org/jira/browse/HBASE-19571) | Minor refactor of Nightly run scripts | Minor | . | +| [HBASE-19491](https://issues.apache.org/jira/browse/HBASE-19491) | Exclude flaky tests from nightly master run | Major | . | +| [HBASE-15482](https://issues.apache.org/jira/browse/HBASE-15482) | Provide an option to skip calculating block locations for SnapshotInputFormat | Minor | mapreduce | +| [HBASE-19531](https://issues.apache.org/jira/browse/HBASE-19531) | Remove needless volatile declaration | Trivial | . | +| [HBASE-19521](https://issues.apache.org/jira/browse/HBASE-19521) | HBase mob compaction need to check hfile version | Critical | Compaction, mob | +| [HBASE-14790](https://issues.apache.org/jira/browse/HBASE-14790) | Implement a new DFSOutputStream for logging WAL only | Major | wal | +| [HBASE-19472](https://issues.apache.org/jira/browse/HBASE-19472) | Remove ArrayUtil Class | Major | hbase | +| [HBASE-19489](https://issues.apache.org/jira/browse/HBASE-19489) | Check against only the latest maintenance release in pre-commit hadoopcheck. | Minor | . | +| [HBASE-17425](https://issues.apache.org/jira/browse/HBASE-17425) | Fix calls to deprecated APIs in TestUpdateConfiguration | Trivial | Client | +| [HBASE-19464](https://issues.apache.org/jira/browse/HBASE-19464) | Replace StringBuffer with StringBuilder for hbase-common | Trivial | hbase | +| [HBASE-19463](https://issues.apache.org/jira/browse/HBASE-19463) | Make CPEnv#getConnection return a facade that throws Unsupported if CP calls #close | Major | Coprocessors | +| [HBASE-19180](https://issues.apache.org/jira/browse/HBASE-19180) | Remove unused imports from AlwaysPasses | Trivial | build | +| [HBASE-18169](https://issues.apache.org/jira/browse/HBASE-18169) | Coprocessor fix and cleanup before 2.0.0 release | Blocker | Coprocessors | +| [HBASE-19448](https://issues.apache.org/jira/browse/HBASE-19448) | Replace StringBuffer with StringBuilder for hbase-server | Trivial | hbase | +| [HBASE-19432](https://issues.apache.org/jira/browse/HBASE-19432) | Roll the specified writer in HFileOutputFormat2 | Major | . | +| [HBASE-19290](https://issues.apache.org/jira/browse/HBASE-19290) | Reduce zk request when doing split log | Major | . | +| [HBASE-19336](https://issues.apache.org/jira/browse/HBASE-19336) | Improve rsgroup to allow assign all tables within a specified namespace by only writing namespace | Major | rsgroup | +| [HBASE-19367](https://issues.apache.org/jira/browse/HBASE-19367) | Refactoring in RegionStates, and RSProcedureDispatcher | Minor | . | +| [HBASE-19382](https://issues.apache.org/jira/browse/HBASE-19382) | Update report-flakies.py script to handle yetus builds | Major | . | +| [HBASE-19252](https://issues.apache.org/jira/browse/HBASE-19252) | Move the transform logic of FilterList into transformCell() method to avoid extra ref to question cell | Minor | . | +| [HBASE-19372](https://issues.apache.org/jira/browse/HBASE-19372) | Remove the Span object in SyncFuture as it is useless now | Major | tracing, wal | +| [HBASE-18090](https://issues.apache.org/jira/browse/HBASE-18090) | Improve TableSnapshotInputFormat to allow more multiple mappers per region | Major | mapreduce | +| [HBASE-16868](https://issues.apache.org/jira/browse/HBASE-16868) | Add a replicate\_all flag to avoid misuse the namespaces and table-cfs config of replication peer | Critical | Replication | +| [HBASE-19311](https://issues.apache.org/jira/browse/HBASE-19311) | Promote TestAcidGuarantees to LargeTests and start mini cluster once to make it faster | Major | test | +| [HBASE-19293](https://issues.apache.org/jira/browse/HBASE-19293) | Support adding a new replication peer in disabled state | Major | . | +| [HBASE-16574](https://issues.apache.org/jira/browse/HBASE-16574) | Add backup / restore feature to refguide | Major | . | +| [HBASE-19274](https://issues.apache.org/jira/browse/HBASE-19274) | Log IOException when unable to determine the size of committed file | Trivial | . | +| [HBASE-19251](https://issues.apache.org/jira/browse/HBASE-19251) | Merge RawAsyncTable and AsyncTable | Major | asyncclient, Client | +| [HBASE-19262](https://issues.apache.org/jira/browse/HBASE-19262) | Revisit checkstyle rules | Major | build | +| [HBASE-18601](https://issues.apache.org/jira/browse/HBASE-18601) | Update Htrace to 4.2 | Major | dependencies, tracing | +| [HBASE-19227](https://issues.apache.org/jira/browse/HBASE-19227) | Nightly jobs should archive JVM dumpstream files | Critical | build | +| [HBASE-12350](https://issues.apache.org/jira/browse/HBASE-12350) | Backport error-prone build support to branch-1 and branch-2 | Minor | . | +| [HBASE-19228](https://issues.apache.org/jira/browse/HBASE-19228) | nightly job should gather machine stats. | Major | build | +| [HBASE-19186](https://issues.apache.org/jira/browse/HBASE-19186) | Unify to use bytes to show size in master/rs ui | Minor | . | +| [HBASE-19027](https://issues.apache.org/jira/browse/HBASE-19027) | Honor the CellComparator of ScanInfo in scanning over a store | Major | . | +| [HBASE-13622](https://issues.apache.org/jira/browse/HBASE-13622) | document upgrade rollback | Major | documentation | +| [HBASE-18925](https://issues.apache.org/jira/browse/HBASE-18925) | Need updated mockito for using java optional | Major | . | +| [HBASE-19140](https://issues.apache.org/jira/browse/HBASE-19140) | hbase-cleanup.sh uses deprecated call to remove files in hdfs | Trivial | scripts | +| [HBASE-17065](https://issues.apache.org/jira/browse/HBASE-17065) | Perform more effective sorting for RPC Handler Tasks | Minor | . | +| [HBASE-18870](https://issues.apache.org/jira/browse/HBASE-18870) | Hbase Backup should set the details to MR job name | Minor | . | +| [HBASE-18602](https://issues.apache.org/jira/browse/HBASE-18602) | rsgroup cleanup unassign code | Minor | rsgroup | +| [HBASE-19110](https://issues.apache.org/jira/browse/HBASE-19110) | Add default for Server#isStopping & #getFileSystem | Minor | . | +| [HBASE-19091](https://issues.apache.org/jira/browse/HBASE-19091) | Code annotation wrote "BinaryComparator" instead of "LongComparator" | Minor | Client | +| [HBASE-18994](https://issues.apache.org/jira/browse/HBASE-18994) | Decide if META/System tables should use Compacting Memstore or Default Memstore | Major | . | +| [HBASE-19051](https://issues.apache.org/jira/browse/HBASE-19051) | Add new split algorithm for num string | Minor | . | +| [HBASE-18824](https://issues.apache.org/jira/browse/HBASE-18824) | Add meaningful comment to HConstants.LATEST\_TIMESTAMP to explain why it is MAX\_VALUE | Minor | . | +| [HBASE-10367](https://issues.apache.org/jira/browse/HBASE-10367) | RegionServer graceful stop / decommissioning | Major | . | +| [HBASE-18986](https://issues.apache.org/jira/browse/HBASE-18986) | Remove unnecessary null check after CellUtil.cloneQualifier() | Minor | . | +| [HBASE-15410](https://issues.apache.org/jira/browse/HBASE-15410) | Utilize the max seek value when all Filters in MUST\_PASS\_ALL FilterList return SEEK\_NEXT\_USING\_HINT | Major | . | +| [HBASE-18843](https://issues.apache.org/jira/browse/HBASE-18843) | Add DistCp support to incremental backup with bulk loading | Major | . | +| [HBASE-16010](https://issues.apache.org/jira/browse/HBASE-16010) | Put draining function through Admin API | Minor | . | +| [HBASE-18899](https://issues.apache.org/jira/browse/HBASE-18899) | Make Fileinfo more readable in HFilePrettyPrinter | Major | HFile | +| [HBASE-16894](https://issues.apache.org/jira/browse/HBASE-16894) | Create more than 1 split per region, generalize HBASE-12590 | Major | . | +| [HBASE-18929](https://issues.apache.org/jira/browse/HBASE-18929) | Hbase backup command doesn’t show debug option to enable backup in debug mode | Minor | . | +| [HBASE-18814](https://issues.apache.org/jira/browse/HBASE-18814) | Make ScanMetrics enabled and add counter \ into the MapReduce Job over snapshot | Minor | mapreduce | +| [HBASE-18559](https://issues.apache.org/jira/browse/HBASE-18559) | Add histogram to MetricsConnection to track concurrent calls per server | Minor | Client | +| [HBASE-18436](https://issues.apache.org/jira/browse/HBASE-18436) | Add client-side hedged read metrics | Minor | . | +| [HBASE-13844](https://issues.apache.org/jira/browse/HBASE-13844) | Move static helper methods from KeyValue into CellUtils | Minor | . | +| [HBASE-18884](https://issues.apache.org/jira/browse/HBASE-18884) | Coprocessor Design Improvements follow up of HBASE-17732 | Major | Coprocessors | +| [HBASE-18652](https://issues.apache.org/jira/browse/HBASE-18652) | Expose individual cache stats in a CombinedCache through JMX | Major | regionserver | +| [HBASE-18651](https://issues.apache.org/jira/browse/HBASE-18651) | Let ChaosMonkeyRunner expose the chaos monkey runner it creates | Major | . | +| [HBASE-11462](https://issues.apache.org/jira/browse/HBASE-11462) | MetaTableAccessor shouldn't use ZooKeeeper | Major | Client, Zookeeper | +| [HBASE-18478](https://issues.apache.org/jira/browse/HBASE-18478) | Allow users to remove RegionFinder from LoadBalancer calculations if no locality possible | Major | Balancer | +| [HBASE-18849](https://issues.apache.org/jira/browse/HBASE-18849) | expand "thirdparty" reference to give examples of setting netty location in common testing modules | Critical | documentation, thirdparty | +| [HBASE-18609](https://issues.apache.org/jira/browse/HBASE-18609) | Apply ClusterStatus#getClusterStatus(EnumSet\) in code base | Major | . | +| [HBASE-18795](https://issues.apache.org/jira/browse/HBASE-18795) | Expose KeyValue.getBuffer() for tests alone | Major | . | +| [HBASE-18772](https://issues.apache.org/jira/browse/HBASE-18772) | [JDK8] Replace AtomicLong with LongAdder | Trivial | . | +| [HBASE-14996](https://issues.apache.org/jira/browse/HBASE-14996) | Some more API cleanup for 2.0 | Blocker | . | +| [HBASE-18683](https://issues.apache.org/jira/browse/HBASE-18683) | Upgrade hbase to commons-math 3 | Major | . | +| [HBASE-13271](https://issues.apache.org/jira/browse/HBASE-13271) | Table#puts(List\) operation is indeterminate; needs fixing | Critical | API | +| [HBASE-10240](https://issues.apache.org/jira/browse/HBASE-10240) | Remove 0.94-\>0.96 migration code | Critical | . | +| [HBASE-18662](https://issues.apache.org/jira/browse/HBASE-18662) | The default values for many configuration items in the code are not consistent with hbase-default.xml | Minor | . | +| [HBASE-18621](https://issues.apache.org/jira/browse/HBASE-18621) | Refactor ClusterOptions before applying to code base | Major | . | +| [HBASE-18778](https://issues.apache.org/jira/browse/HBASE-18778) | Use Comparator for StealJobQueue | Major | Compaction | +| [HBASE-18737](https://issues.apache.org/jira/browse/HBASE-18737) | Display configured max size of memstore and cache on RS UI | Minor | . | +| [HBASE-18674](https://issues.apache.org/jira/browse/HBASE-18674) | upgrade hbase to commons-lang3 | Major | . | +| [HBASE-18746](https://issues.apache.org/jira/browse/HBASE-18746) | Throw exception with job.getStatus().getFailureInfo() when ExportSnapshot fails | Minor | mapreduce, snapshots | +| [HBASE-18740](https://issues.apache.org/jira/browse/HBASE-18740) | Upgrade Zookeeper version to 3.4.10 | Major | . | +| [HBASE-18699](https://issues.apache.org/jira/browse/HBASE-18699) | Copy LoadIncrementalHFiles to another package and mark the old one as deprecated | Major | mapreduce | +| [HBASE-18675](https://issues.apache.org/jira/browse/HBASE-18675) | Making {max,min}SessionTimeout configurable for MiniZooKeeperCluster | Minor | test, Zookeeper | +| [HBASE-17826](https://issues.apache.org/jira/browse/HBASE-17826) | Backup: submit M/R job to a particular Yarn queue | Major | . | +| [HBASE-18677](https://issues.apache.org/jira/browse/HBASE-18677) | typo in namespace docs | Trivial | documentation | +| [HBASE-18701](https://issues.apache.org/jira/browse/HBASE-18701) | Optimize reference guide to use cell acl conveniently | Trivial | . | +| [HBASE-18519](https://issues.apache.org/jira/browse/HBASE-18519) | Use builder pattern to create cell | Major | . | +| [HBASE-18673](https://issues.apache.org/jira/browse/HBASE-18673) | Some more unwanted reference to unshaded PB classes | Minor | . | +| [HBASE-18224](https://issues.apache.org/jira/browse/HBASE-18224) | Upgrade jetty | Critical | dependencies | +| [HBASE-18532](https://issues.apache.org/jira/browse/HBASE-18532) | Improve cache related stats rendered on RS UI | Major | regionserver, UI | +| [HBASE-18629](https://issues.apache.org/jira/browse/HBASE-18629) | Enhance ChaosMonkeyRunner with interruptibility | Major | . | +| [HBASE-18631](https://issues.apache.org/jira/browse/HBASE-18631) | Allow configuration of ChaosMonkey properties via hbase-site | Minor | integration tests | +| [HBASE-18573](https://issues.apache.org/jira/browse/HBASE-18573) | Update Append and Delete to use Mutation#getCellList(family) | Minor | . | +| [HBASE-18251](https://issues.apache.org/jira/browse/HBASE-18251) | Remove unnecessary traversing to the first and last keys in the CellSet | Major | . | +| [HBASE-18581](https://issues.apache.org/jira/browse/HBASE-18581) | Remove dead code and some tidy up in BaseLoadBalancer | Minor | Balancer | +| [HBASE-18504](https://issues.apache.org/jira/browse/HBASE-18504) | Add documentation for WAL compression | Minor | documentation | +| [HBASE-17064](https://issues.apache.org/jira/browse/HBASE-17064) | Add TaskMonitor#getTasks() variant which accepts type selection | Minor | . | +| [HBASE-2631](https://issues.apache.org/jira/browse/HBASE-2631) | Decide between "InMB" and "MB" as suffix for field names in ClusterStatus objects | Minor | . | +| [HBASE-18533](https://issues.apache.org/jira/browse/HBASE-18533) | Expose BucketCache values to be configured | Major | BucketCache | +| [HBASE-18303](https://issues.apache.org/jira/browse/HBASE-18303) | Clean up some parameterized test declarations | Minor | test | +| [HBASE-18522](https://issues.apache.org/jira/browse/HBASE-18522) | Add RowMutations support to Batch | Major | . | +| [HBASE-18566](https://issues.apache.org/jira/browse/HBASE-18566) | [RSGROUP]Log the client IP/port of the rsgroup admin | Major | rsgroup | +| [HBASE-15511](https://issues.apache.org/jira/browse/HBASE-15511) | ClusterStatus should be able to return responses by scope | Major | . | +| [HBASE-18555](https://issues.apache.org/jira/browse/HBASE-18555) | Remove redundant familyMap.put() from addxxx() of sub-classes of Mutation and Query | Minor | Client | +| [HBASE-18387](https://issues.apache.org/jira/browse/HBASE-18387) | [Thrift] Make principal configurable in DemoClient.java | Minor | . | +| [HBASE-18548](https://issues.apache.org/jira/browse/HBASE-18548) | Move sources of important Jenkins jobs into source control | Critical | documentation, scripts | +| [HBASE-18248](https://issues.apache.org/jira/browse/HBASE-18248) | Warn if monitored RPC task has been tied up beyond a configurable threshold | Major | . | +| [HBASE-18485](https://issues.apache.org/jira/browse/HBASE-18485) | Performance issue: ClientAsyncPrefetchScanner is slower than ClientSimpleScanner | Major | . | +| [HBASE-18426](https://issues.apache.org/jira/browse/HBASE-18426) | nightly job should use independent stages to check supported jdks | Critical | community, test | +| [HBASE-14220](https://issues.apache.org/jira/browse/HBASE-14220) | nightly tests should verify src tgz generates and builds correctly | Minor | build | +| [HBASE-18520](https://issues.apache.org/jira/browse/HBASE-18520) | Add jmx value to determine true Master Start time | Minor | metrics | +| [HBASE-16893](https://issues.apache.org/jira/browse/HBASE-16893) | Use Collection.removeIf instead of Iterator.remove in DependentColumnFilter | Minor | . | +| [HBASE-16116](https://issues.apache.org/jira/browse/HBASE-16116) | Remove redundant pattern \*.iml | Trivial | . | +| [HBASE-18261](https://issues.apache.org/jira/browse/HBASE-18261) | [AMv2] Create new RecoverMetaProcedure and use it from ServerCrashProcedure and HMaster.finishActiveMasterInitialization() | Major | amv2 | +| [HBASE-18402](https://issues.apache.org/jira/browse/HBASE-18402) | Thrift2 should support DeleteFamilyVersion type | Major | Thrift | +| [HBASE-18434](https://issues.apache.org/jira/browse/HBASE-18434) | Address some alerts raised by lgtm.com | Major | . | +| [HBASE-18023](https://issues.apache.org/jira/browse/HBASE-18023) | Log multi-\* requests for more than threshold number of rows | Minor | regionserver | +| [HBASE-15816](https://issues.apache.org/jira/browse/HBASE-15816) | Provide client with ability to set priority on Operations | Major | . | +| [HBASE-18389](https://issues.apache.org/jira/browse/HBASE-18389) | Remove byte[] from formal parameter of sizeOf() of ClassSize, ClassSize.MemoryLayout and ClassSize.UnsafeLayout | Minor | util | +| [HBASE-18412](https://issues.apache.org/jira/browse/HBASE-18412) | [Shell] Support unset of list of configuration for a table | Minor | . | +| [HBASE-16312](https://issues.apache.org/jira/browse/HBASE-16312) | update jquery version | Critical | dependencies, UI | +| [HBASE-18332](https://issues.apache.org/jira/browse/HBASE-18332) | Upgrade asciidoctor-maven-plugin | Minor | website | +| [HBASE-18339](https://issues.apache.org/jira/browse/HBASE-18339) | Update test-patch to use hadoop 3.0.0-alpha4 | Major | test | +| [HBASE-18004](https://issues.apache.org/jira/browse/HBASE-18004) | getRegionLocations needs to be called once in ScannerCallableWithReplicas#call() | Minor | Client | +| [HBASE-18307](https://issues.apache.org/jira/browse/HBASE-18307) | Share the same EventLoopGroup for NettyRpcServer, NettyRpcClient and AsyncFSWALProvider at RS side | Major | io, rpc, wal | +| [HBASE-18083](https://issues.apache.org/jira/browse/HBASE-18083) | Make large/small file clean thread number configurable in HFileCleaner | Major | . | +| [HBASE-16730](https://issues.apache.org/jira/browse/HBASE-16730) | Exclude junit as a transitive dependency from hadoop-common | Trivial | hbase | +| [HBASE-15062](https://issues.apache.org/jira/browse/HBASE-15062) | IntegrationTestMTTR conditionally run some tests | Minor | integration tests | +| [HBASE-11707](https://issues.apache.org/jira/browse/HBASE-11707) | Using Map instead of list in FailedServers of RpcClient | Minor | Client | +| [HBASE-18286](https://issues.apache.org/jira/browse/HBASE-18286) | Create static empty byte array to save memory | Trivial | community | +| [HBASE-17995](https://issues.apache.org/jira/browse/HBASE-17995) | improve log messages during snapshot related tests | Trivial | integration tests, mapreduce, snapshots, test | +| [HBASE-15391](https://issues.apache.org/jira/browse/HBASE-15391) | Avoid too large "deleted from META" info log | Minor | . | +| [HBASE-16585](https://issues.apache.org/jira/browse/HBASE-16585) | Rewrite the delegation token tests with Parameterized pattern | Major | security, test | +| [HBASE-13197](https://issues.apache.org/jira/browse/HBASE-13197) | Connection API cleanup | Major | API | +| [HBASE-15756](https://issues.apache.org/jira/browse/HBASE-15756) | Pluggable RpcServer | Critical | Performance, rpc | +| [HBASE-17110](https://issues.apache.org/jira/browse/HBASE-17110) | Improve SimpleLoadBalancer to always take server-level balance into account | Major | Balancer | +| [HBASE-18022](https://issues.apache.org/jira/browse/HBASE-18022) | Refine the error message issued with TableNotFoundException when expected table is not the same as the one fetched from meta | Minor | . | +| [HBASE-18281](https://issues.apache.org/jira/browse/HBASE-18281) | Performance update in StoreFileWriter.java for string replacement | Trivial | community | +| [HBASE-18041](https://issues.apache.org/jira/browse/HBASE-18041) | Add pylintrc file to HBase | Major | community | +| [HBASE-18275](https://issues.apache.org/jira/browse/HBASE-18275) | Formatting and grammar mistakes in schemadoc chapter | Trivial | documentation | +| [HBASE-18164](https://issues.apache.org/jira/browse/HBASE-18164) | Much faster locality cost function and candidate generator | Critical | Balancer | +| [HBASE-16351](https://issues.apache.org/jira/browse/HBASE-16351) | do dependency license check via enforcer plugin | Major | build, dependencies | +| [HBASE-18252](https://issues.apache.org/jira/browse/HBASE-18252) | Resolve BaseLoadBalancer bad practice warnings | Minor | . | +| [HBASE-18033](https://issues.apache.org/jira/browse/HBASE-18033) | Update supplemental models for new deps in Hadoop trunk | Critical | dependencies | +| [HBASE-17959](https://issues.apache.org/jira/browse/HBASE-17959) | Canary timeout should be configurable on a per-table basis | Minor | canary | +| [HBASE-17777](https://issues.apache.org/jira/browse/HBASE-17777) | TestMemstoreLAB#testLABThreading runs too long for a small test | Minor | test | +| [HBASE-18101](https://issues.apache.org/jira/browse/HBASE-18101) | Fix type mismatch on container access in QuotaCache#chore | Trivial | . | +| [HBASE-18001](https://issues.apache.org/jira/browse/HBASE-18001) | Extend the "count" shell command to support specified conditions | Minor | shell | +| [HBASE-18094](https://issues.apache.org/jira/browse/HBASE-18094) | Display the return value of the command append | Major | shell | +| [HBASE-18075](https://issues.apache.org/jira/browse/HBASE-18075) | Support namespaces and tables with non-latin alphabetical characters | Major | Client | +| [HBASE-18067](https://issues.apache.org/jira/browse/HBASE-18067) | Support a default converter for data read shell commands | Minor | shell | +| [HBASE-18019](https://issues.apache.org/jira/browse/HBASE-18019) | Close redundant memstore scanners | Major | . | +| [HBASE-17910](https://issues.apache.org/jira/browse/HBASE-17910) | Use separated StoreFileReader for streaming read | Major | regionserver, scan, Scanners | +| [HBASE-18043](https://issues.apache.org/jira/browse/HBASE-18043) | Institute a hard limit for individual cell size that cannot be overridden by clients | Major | IPC/RPC, regionserver | +| [HBASE-17343](https://issues.apache.org/jira/browse/HBASE-17343) | Make Compacting Memstore default in 2.0 with BASIC as the default type | Blocker | regionserver | +| [HBASE-18021](https://issues.apache.org/jira/browse/HBASE-18021) | Add more info in timed out RetriesExhaustedException for read replica client get processing, | Minor | Client | +| [HBASE-18017](https://issues.apache.org/jira/browse/HBASE-18017) | Reduce frequency of setStoragePolicy failure warnings | Minor | . | +| [HBASE-14925](https://issues.apache.org/jira/browse/HBASE-14925) | Develop HBase shell command/tool to list table's region info through command line | Major | shell | +| [HBASE-17924](https://issues.apache.org/jira/browse/HBASE-17924) | Consider sorting the row order when processing multi() ops before taking rowlocks | Major | . | +| [HBASE-18015](https://issues.apache.org/jira/browse/HBASE-18015) | Storage class aware block placement for procedure v2 WALs | Minor | . | +| [HBASE-18007](https://issues.apache.org/jira/browse/HBASE-18007) | Clean up rest module code | Trivial | . | +| [HBASE-17990](https://issues.apache.org/jira/browse/HBASE-17990) | Refactor TestFSUtils to use Before | Trivial | . | +| [HBASE-16466](https://issues.apache.org/jira/browse/HBASE-16466) | HBase snapshots support in VerifyReplication tool to reduce load on live HBase cluster with large tables | Major | hbase | +| [HBASE-12870](https://issues.apache.org/jira/browse/HBASE-12870) | "Major compaction triggered" and "Skipping major compaction" messages lack the region information | Major | Compaction | +| [HBASE-17973](https://issues.apache.org/jira/browse/HBASE-17973) | Create shell command to identify regions with poor locality | Major | shell | +| [HBASE-17979](https://issues.apache.org/jira/browse/HBASE-17979) | HBase Shell 'list' Command Help Doc Improvements | Minor | shell | +| [HBASE-17875](https://issues.apache.org/jira/browse/HBASE-17875) | Document why objects over 10MB are not well-suited for hbase | Major | documentation, mob | +| [HBASE-8486](https://issues.apache.org/jira/browse/HBASE-8486) | IS\_ROOT isnt needed in HTableDescriptor. | Minor | . | +| [HBASE-17817](https://issues.apache.org/jira/browse/HBASE-17817) | Make Regionservers log which tables it removed coprocessors from when aborting | Major | Coprocessors, regionserver | +| [HBASE-17835](https://issues.apache.org/jira/browse/HBASE-17835) | Spelling mistakes in the Java source | Trivial | documentation | +| [HBASE-17962](https://issues.apache.org/jira/browse/HBASE-17962) | Improve documentation on Rest interface | Trivial | documentation, REST | +| [HBASE-17877](https://issues.apache.org/jira/browse/HBASE-17877) | Improve HBase's byte[] comparator | Major | util | +| [HBASE-9899](https://issues.apache.org/jira/browse/HBASE-9899) | for idempotent operation dups, return the result instead of throwing conflict exception | Major | . | +| [HBASE-17514](https://issues.apache.org/jira/browse/HBASE-17514) | Warn when Thrift Server 1 is configured for proxy users but not the HTTP transport | Minor | Thrift, Usability | +| [HBASE-17944](https://issues.apache.org/jira/browse/HBASE-17944) | Removed unused JDK version parsing from ClassSize. | Minor | build | +| [HBASE-17912](https://issues.apache.org/jira/browse/HBASE-17912) | Avoid major compactions on region server startup | Major | Compaction | +| [HBASE-17888](https://issues.apache.org/jira/browse/HBASE-17888) | Add generic methods for updating metrics on start and end of a procedure execution | Major | proc-v2 | +| [HBASE-16469](https://issues.apache.org/jira/browse/HBASE-16469) | Several log refactoring/improvement suggestions | Major | Operability | +| [HBASE-17836](https://issues.apache.org/jira/browse/HBASE-17836) | CellUtil#estimatedSerializedSizeOf is slow when input is ByteBufferCell | Minor | . | +| [HBASE-16969](https://issues.apache.org/jira/browse/HBASE-16969) | RegionCoprocessorServiceExec should override the toString() for debugging | Minor | . | +| [HBASE-17854](https://issues.apache.org/jira/browse/HBASE-17854) | Use StealJobQueue in HFileCleaner after HBASE-17215 | Major | . | +| [HBASE-17215](https://issues.apache.org/jira/browse/HBASE-17215) | Separate small/large file delete threads in HFileCleaner to accelerate archived hfile cleanup speed | Major | . | +| [HBASE-17831](https://issues.apache.org/jira/browse/HBASE-17831) | Support small scan in thrift2 | Major | Thrift | +| [HBASE-17623](https://issues.apache.org/jira/browse/HBASE-17623) | Reuse the bytes array when building the hfile block | Major | HFile | +| [HBASE-17815](https://issues.apache.org/jira/browse/HBASE-17815) | Remove the unused field in PrefixTreeSeeker | Trivial | . | +| [HBASE-17778](https://issues.apache.org/jira/browse/HBASE-17778) | Remove the testing code in the AsyncRequestFutureImpl | Trivial | . | +| [HBASE-15339](https://issues.apache.org/jira/browse/HBASE-15339) | Improve DateTieredCompactionPolicy | Major | Compaction | +| [HBASE-17747](https://issues.apache.org/jira/browse/HBASE-17747) | Support both weak and soft object pool | Major | . | +| [HBASE-15429](https://issues.apache.org/jira/browse/HBASE-15429) | Add a split policy for busy regions | Major | regionserver | +| [HBASE-17731](https://issues.apache.org/jira/browse/HBASE-17731) | Fractional latency reporting in MultiThreadedAction | Trivial | . | +| [HBASE-16977](https://issues.apache.org/jira/browse/HBASE-16977) | VerifyReplication should log a printable representation of the row keys | Minor | Replication | +| [HBASE-15941](https://issues.apache.org/jira/browse/HBASE-15941) | HBCK repair should not unsplit healthy splitted region | Major | hbck | +| [HBASE-17532](https://issues.apache.org/jira/browse/HBASE-17532) | Replace explicit type with diamond operator | Trivial | build | +| [HBASE-17734](https://issues.apache.org/jira/browse/HBASE-17734) | Guard against possibly copying the qualifier in the ScanDeleteTracker | Minor | . | +| [HBASE-17690](https://issues.apache.org/jira/browse/HBASE-17690) | Clean up MOB code | Major | mob | +| [HBASE-16188](https://issues.apache.org/jira/browse/HBASE-16188) | Add EventCounter information to log4j properties file | Minor | . | +| [HBASE-17689](https://issues.apache.org/jira/browse/HBASE-17689) | Add support for table.existsAll in thrift2 THBaseservice | Major | Thrift | +| [HBASE-17634](https://issues.apache.org/jira/browse/HBASE-17634) | Clean up the usage of Result.isPartial | Major | scan | +| [HBASE-17654](https://issues.apache.org/jira/browse/HBASE-17654) | RSGroup code refactoring | Major | rsgroup | +| [HBASE-17057](https://issues.apache.org/jira/browse/HBASE-17057) | Minor compactions should also drop page cache behind reads | Major | Compaction | +| [HBASE-17676](https://issues.apache.org/jira/browse/HBASE-17676) | Get class name once for all in AbstractFSWAL | Major | Performance | +| [HBASE-13718](https://issues.apache.org/jira/browse/HBASE-13718) | Add a pretty printed table description to the table detail page of HBase's master | Minor | hbase | +| [HBASE-17172](https://issues.apache.org/jira/browse/HBASE-17172) | Optimize mob compaction with \_del files | Major | mob | +| [HBASE-17627](https://issues.apache.org/jira/browse/HBASE-17627) | Active workers metric for thrift | Major | Thrift | +| [HBASE-17637](https://issues.apache.org/jira/browse/HBASE-17637) | Update progress more frequently in IntegrationTestBigLinkedList.Generator.persist | Minor | . | +| [HBASE-17605](https://issues.apache.org/jira/browse/HBASE-17605) | Refactor procedure framework code | Major | proc-v2 | +| [HBASE-17280](https://issues.apache.org/jira/browse/HBASE-17280) | Add mechanism to control hbase cleaner behavior | Minor | Client, hbase, shell | +| [HBASE-17613](https://issues.apache.org/jira/browse/HBASE-17613) | avoid copy of family when initializing the FSWALEntry | Minor | . | +| [HBASE-17437](https://issues.apache.org/jira/browse/HBASE-17437) | Support specifying a WAL directory outside of the root directory | Major | Filesystem Integration, wal | +| [HBASE-17592](https://issues.apache.org/jira/browse/HBASE-17592) | Fix typo in IPCUtil and RpcConnection | Trivial | . | +| [HBASE-17588](https://issues.apache.org/jira/browse/HBASE-17588) | Remove unused imports brought in by HBASE-17437 | Trivial | . | +| [HBASE-17552](https://issues.apache.org/jira/browse/HBASE-17552) | Update developer section in hbase book | Major | . | +| [HBASE-17543](https://issues.apache.org/jira/browse/HBASE-17543) | Create additional ReplicationEndpoint WALEntryFilters by configuration | Major | Replication | +| [HBASE-17569](https://issues.apache.org/jira/browse/HBASE-17569) | HBase-Procedure module need to support mvn clean test -PskipProcedureTests to skip unit test | Minor | proc-v2 | +| [HBASE-17555](https://issues.apache.org/jira/browse/HBASE-17555) | Change calls to deprecated getHBaseAdmin to getAdmin | Minor | . | +| [HBASE-17563](https://issues.apache.org/jira/browse/HBASE-17563) | Foreach and switch in RootDocProcessor and StabilityOptions | Trivial | . | +| [HBASE-17515](https://issues.apache.org/jira/browse/HBASE-17515) | Reduce memory footprint of RegionLoads kept by StochasticLoadBalancer | Major | . | +| [HBASE-17462](https://issues.apache.org/jira/browse/HBASE-17462) | Use sliding window for read/write request costs in StochasticLoadBalancer | Major | . | +| [HBASE-16698](https://issues.apache.org/jira/browse/HBASE-16698) | Performance issue: handlers stuck waiting for CountDownLatch inside WALKey#getWriteEntry under high writing workload | Major | Performance | +| [HBASE-17404](https://issues.apache.org/jira/browse/HBASE-17404) | Replace explicit type with diamond operator in hbase-annotations | Trivial | . | +| [HBASE-10699](https://issues.apache.org/jira/browse/HBASE-10699) | Optimize some code; set capacity on arraylist when possible; use isEmpty; reduce allocations | Major | . | +| [HBASE-17488](https://issues.apache.org/jira/browse/HBASE-17488) | WALEdit should be lazily instantiated | Trivial | . | +| [HBASE-17408](https://issues.apache.org/jira/browse/HBASE-17408) | Introduce per request limit by number of mutations | Major | . | +| [HBASE-17291](https://issues.apache.org/jira/browse/HBASE-17291) | Remove ImmutableSegment#getKeyValueScanner | Major | Scanners | +| [HBASE-17314](https://issues.apache.org/jira/browse/HBASE-17314) | Limit total buffered size for all replication sources | Major | Replication | +| [HBASE-17348](https://issues.apache.org/jira/browse/HBASE-17348) | Remove the unused hbase.replication from javadoc/comment/book completely | Trivial | . | +| [HBASE-15924](https://issues.apache.org/jira/browse/HBASE-15924) | Enhance hbase services autorestart capability to hbase-daemon.sh | Major | . | +| [HBASE-17292](https://issues.apache.org/jira/browse/HBASE-17292) | Add observer notification before bulk loaded hfile is moved to region directory | Major | . | +| [HBASE-17332](https://issues.apache.org/jira/browse/HBASE-17332) | Replace HashMap to Array for DataBlockEncoding.idToEncoding | Major | . | +| [HBASE-17331](https://issues.apache.org/jira/browse/HBASE-17331) | Avoid busy waiting in ThrottledInputStream | Minor | . | +| [HBASE-17318](https://issues.apache.org/jira/browse/HBASE-17318) | Increment does not add new column if the increment amount is zero at first time writing | Major | . | +| [HBASE-17298](https://issues.apache.org/jira/browse/HBASE-17298) | remove unused code in HRegion#doMiniBatchMutation | Minor | regionserver | +| [HBASE-17296](https://issues.apache.org/jira/browse/HBASE-17296) | Provide per peer throttling for replication | Major | Replication | +| [HBASE-17276](https://issues.apache.org/jira/browse/HBASE-17276) | Reduce log spam from WrongRegionException in large multi()'s | Minor | regionserver | +| [HBASE-17241](https://issues.apache.org/jira/browse/HBASE-17241) | Avoid compacting already compacted mob files with \_del files | Major | mob | +| [HBASE-17207](https://issues.apache.org/jira/browse/HBASE-17207) | Arrays.asList() with too few arguments | Trivial | . | +| [HBASE-16700](https://issues.apache.org/jira/browse/HBASE-16700) | Allow for coprocessor whitelisting | Minor | Coprocessors | +| [HBASE-17239](https://issues.apache.org/jira/browse/HBASE-17239) | Add UnsafeByteOperations#wrap(ByteInput, int offset, int len) API | Major | Protobufs | +| [HBASE-17245](https://issues.apache.org/jira/browse/HBASE-17245) | Replace HTableDescriptor#htd.getColumnFamilies().length with a low-cost implementation | Minor | . | +| [HBASE-14882](https://issues.apache.org/jira/browse/HBASE-14882) | Provide a Put API that adds the provided family, qualifier, value without copying | Major | . | +| [HBASE-17243](https://issues.apache.org/jira/browse/HBASE-17243) | Reuse CompactionPartitionId and avoid creating MobFileName in PartitionedMobCompactor to avoid unnecessary new objects | Minor | mob | +| [HBASE-17194](https://issues.apache.org/jira/browse/HBASE-17194) | Assign the new region to the idle server after splitting | Minor | . | +| [HBASE-17232](https://issues.apache.org/jira/browse/HBASE-17232) | Replace HashSet with ArrayList to accumulate delayed scanners in KVHeap and StoreScanner. | Major | . | +| [HBASE-17161](https://issues.apache.org/jira/browse/HBASE-17161) | MOB : Make ref cell creation more efficient | Major | . | +| [HBASE-17235](https://issues.apache.org/jira/browse/HBASE-17235) | Improvement in creation of CIS for onheap buffer cases | Major | rpc | +| [HBASE-17191](https://issues.apache.org/jira/browse/HBASE-17191) | Make use of UnsafeByteOperations#unsafeWrap(ByteBuffer buffer) in PBUtil#toCell(Cell cell) | Major | . | +| [HBASE-17205](https://issues.apache.org/jira/browse/HBASE-17205) | Add a metric for the duration of region in transition | Minor | Region Assignment | +| [HBASE-17216](https://issues.apache.org/jira/browse/HBASE-17216) | A Few Fields Can Be Safely Made Static | Major | . | +| [HBASE-17212](https://issues.apache.org/jira/browse/HBASE-17212) | Should add null checker on table name in HTable constructor and RegionServerCallable | Major | . | +| [HBASE-17184](https://issues.apache.org/jira/browse/HBASE-17184) | Code cleanup of LruBlockCache | Trivial | . | +| [HBASE-17211](https://issues.apache.org/jira/browse/HBASE-17211) | Add more details in log when UnknownScannerException thrown in ScannerCallable | Minor | Operability | +| [HBASE-17178](https://issues.apache.org/jira/browse/HBASE-17178) | Add region balance throttling | Major | Balancer | +| [HBASE-16302](https://issues.apache.org/jira/browse/HBASE-16302) | age of last shipped op and age of last applied op should be histograms | Major | Replication | +| [HBASE-16561](https://issues.apache.org/jira/browse/HBASE-16561) | Add metrics about read/write/scan queue length and active read/write/scan handler count | Minor | IPC/RPC, metrics | +| [HBASE-17086](https://issues.apache.org/jira/browse/HBASE-17086) | Add comments to explain why Cell#getTagsLength() returns an int, rather than a short | Minor | Interface | +| [HBASE-17176](https://issues.apache.org/jira/browse/HBASE-17176) | Reuse the builder in RequestConverter | Minor | . | +| [HBASE-17157](https://issues.apache.org/jira/browse/HBASE-17157) | Increase the default mergeable threshold for mob compaction | Major | mob | +| [HBASE-17129](https://issues.apache.org/jira/browse/HBASE-17129) | Remove public from methods in DataType interface | Minor | . | +| [HBASE-17123](https://issues.apache.org/jira/browse/HBASE-17123) | Add postBulkLoadHFile variant that notifies the final paths for the hfiles | Major | . | +| [HBASE-17126](https://issues.apache.org/jira/browse/HBASE-17126) | Expose KeyValue#checkParameters() and checkForTagsLength() to be used by other Cell implementations | Minor | Client, regionserver | +| [HBASE-17088](https://issues.apache.org/jira/browse/HBASE-17088) | Refactor RWQueueRpcExecutor/BalancedQueueRpcExecutor/RpcExecutor | Major | rpc | +| [HBASE-16708](https://issues.apache.org/jira/browse/HBASE-16708) | Expose endpoint Coprocessor name in "responseTooSlow" log messages | Major | . | +| [HBASE-17037](https://issues.apache.org/jira/browse/HBASE-17037) | Enhance LoadIncrementalHFiles API to convey loaded files | Major | . | +| [HBASE-17077](https://issues.apache.org/jira/browse/HBASE-17077) | Don't copy the replication queue belonging to the peer which has been deleted | Minor | . | +| [HBASE-17047](https://issues.apache.org/jira/browse/HBASE-17047) | Add an API to get HBase connection cache statistics | Minor | spark | +| [HBASE-17063](https://issues.apache.org/jira/browse/HBASE-17063) | Cleanup TestHRegion : remove duplicate variables for method name and two unused params in initRegion | Minor | . | +| [HBASE-17026](https://issues.apache.org/jira/browse/HBASE-17026) | VerifyReplication log should distinguish whether good row key is result of revalidation | Minor | . | +| [HBASE-16840](https://issues.apache.org/jira/browse/HBASE-16840) | Reuse cell's timestamp and type in ScanQueryMatcher | Minor | . | +| [HBASE-17005](https://issues.apache.org/jira/browse/HBASE-17005) | Improve log message in MobFileCache | Trivial | mob | +| [HBASE-17004](https://issues.apache.org/jira/browse/HBASE-17004) | Refactor IntegrationTestManyRegions to use @ClassRule for timing out | Minor | integration tests | +| [HBASE-16946](https://issues.apache.org/jira/browse/HBASE-16946) | Provide Raw scan as an option in VerifyReplication | Minor | hbase | +| [HBASE-17013](https://issues.apache.org/jira/browse/HBASE-17013) | Add constructor to RowMutations for initializing the capacity of internal list | Minor | . | +| [HBASE-17006](https://issues.apache.org/jira/browse/HBASE-17006) | Add names to threads for better debugability of thread dumps | Minor | Operability | +| [HBASE-17014](https://issues.apache.org/jira/browse/HBASE-17014) | Add clearly marked starting and shutdown log messages for all services. | Minor | Operability | +| [HBASE-16950](https://issues.apache.org/jira/browse/HBASE-16950) | Print raw stats in the end of procedure performance tools for parsing results from scripts | Trivial | . | +| [HBASE-16783](https://issues.apache.org/jira/browse/HBASE-16783) | Use ByteBufferPool for the header and message during Rpc response | Minor | . | +| [HBASE-16562](https://issues.apache.org/jira/browse/HBASE-16562) | ITBLL should fail to start if misconfigured | Major | integration tests | +| [HBASE-16414](https://issues.apache.org/jira/browse/HBASE-16414) | Improve performance for RPC encryption with Apache Common Crypto | Major | IPC/RPC | +| [HBASE-16854](https://issues.apache.org/jira/browse/HBASE-16854) | Refactor the org.apache.hadoop.hbase.client.Action | Minor | . | +| [HBASE-16774](https://issues.apache.org/jira/browse/HBASE-16774) | [shell] Add coverage to TestShell when ZooKeeper is not reachable | Major | shell, test | +| [HBASE-16844](https://issues.apache.org/jira/browse/HBASE-16844) | Procedure V2: DispatchMergingRegionsProcedure to use base class StateMachineProcedure for abort and rollback | Trivial | master, proc-v2 | +| [HBASE-16818](https://issues.apache.org/jira/browse/HBASE-16818) | Avoid multiple copies of binary data during the conversion from Result to Row | Major | spark | +| [HBASE-16821](https://issues.apache.org/jira/browse/HBASE-16821) | Enhance LoadIncrementalHFiles API to convey missing hfiles if any | Major | . | +| [HBASE-15921](https://issues.apache.org/jira/browse/HBASE-15921) | Add first AsyncTable impl and create TableImpl based on it | Major | Client | +| [HBASE-16792](https://issues.apache.org/jira/browse/HBASE-16792) | Reuse KeyValue.KeyOnlyKeyValue in BufferedDataBlockEncoder.SeekerState | Minor | . | +| [HBASE-16784](https://issues.apache.org/jira/browse/HBASE-16784) | Make use of ExtendedCell#write(OutputStream os) for the default HFileWriter#append() | Major | . | +| [HBASE-16809](https://issues.apache.org/jira/browse/HBASE-16809) | Save one cell length calculation in HeapMemStoreLAB#copyCellInto | Minor | . | +| [HBASE-16661](https://issues.apache.org/jira/browse/HBASE-16661) | Add last major compaction age to per-region metrics | Minor | . | +| [HBASE-16773](https://issues.apache.org/jira/browse/HBASE-16773) | AccessController should access local region if possible | Major | . | +| [HBASE-16657](https://issues.apache.org/jira/browse/HBASE-16657) | Expose per-region last major compaction timestamp in RegionServer UI | Minor | regionserver, UI | +| [HBASE-16772](https://issues.apache.org/jira/browse/HBASE-16772) | Add verbose option to VerifyReplication for logging good rows | Minor | Replication, Usability | +| [HBASE-16690](https://issues.apache.org/jira/browse/HBASE-16690) | Move znode path configs to a separated class | Major | Zookeeper | +| [HBASE-16672](https://issues.apache.org/jira/browse/HBASE-16672) | Add option for bulk load to always copy hfile(s) instead of renaming | Major | . | +| [HBASE-16720](https://issues.apache.org/jira/browse/HBASE-16720) | Sort build ids in flaky dashboard | Minor | . | +| [HBASE-16691](https://issues.apache.org/jira/browse/HBASE-16691) | Optimize KeyOnlyFilter by utilizing KeyOnlyCell | Major | . | +| [HBASE-16714](https://issues.apache.org/jira/browse/HBASE-16714) | Procedure V2 - use base class to remove duplicate set up test code in table DDL procedures | Major | proc-v2, test | +| [HBASE-16694](https://issues.apache.org/jira/browse/HBASE-16694) | Reduce garbage for onDiskChecksum in HFileBlock | Minor | . | +| [HBASE-16705](https://issues.apache.org/jira/browse/HBASE-16705) | Eliminate long to Long auto boxing in LongComparator | Minor | Filters | +| [HBASE-16692](https://issues.apache.org/jira/browse/HBASE-16692) | Make ByteBufferUtils#equals safer and correct | Major | . | +| [HBASE-16667](https://issues.apache.org/jira/browse/HBASE-16667) | Building with JDK 8: ignoring option MaxPermSize=256m | Minor | build | +| [HBASE-16423](https://issues.apache.org/jira/browse/HBASE-16423) | Add re-compare option to VerifyReplication to avoid occasional inconsistent rows | Minor | Replication | +| [HBASE-16680](https://issues.apache.org/jira/browse/HBASE-16680) | Reduce garbage in BufferChain | Minor | . | +| [HBASE-16659](https://issues.apache.org/jira/browse/HBASE-16659) | Use CellUtil.createFirstOnRow instead of KeyValueUtil.createFirstOnRow in some places. | Minor | . | +| [HBASE-16646](https://issues.apache.org/jira/browse/HBASE-16646) | Enhance LoadIncrementalHFiles API to accept store file paths as input | Major | . | +| [HBASE-16658](https://issues.apache.org/jira/browse/HBASE-16658) | Optimize UTF8 string/byte conversions | Minor | . | +| [HBASE-16640](https://issues.apache.org/jira/browse/HBASE-16640) | TimeoutBlockingQueue#remove() should return whether the entry is removed | Minor | . | +| [HBASE-15949](https://issues.apache.org/jira/browse/HBASE-15949) | Cleanup TestRegionServerMetrics | Minor | . | +| [HBASE-16381](https://issues.apache.org/jira/browse/HBASE-16381) | Shell deleteall command should support row key prefixes | Minor | shell | +| [HBASE-16616](https://issues.apache.org/jira/browse/HBASE-16616) | Rpc handlers stuck on ThreadLocalMap.expungeStaleEntry | Major | Performance | +| [HBASE-16086](https://issues.apache.org/jira/browse/HBASE-16086) | TableCfWALEntryFilter and ScopeWALEntryFilter should not redundantly iterate over cells. | Major | . | +| [HBASE-16541](https://issues.apache.org/jira/browse/HBASE-16541) | Avoid unnecessary cell copy in Result#compareResults | Major | . | +| [HBASE-16399](https://issues.apache.org/jira/browse/HBASE-16399) | Provide an API to get list of failed regions and servername in Canary | Major | canary | +| [HBASE-16502](https://issues.apache.org/jira/browse/HBASE-16502) | Reduce garbage in BufferedDataBlockEncoder | Major | . | +| [HBASE-16509](https://issues.apache.org/jira/browse/HBASE-16509) | Add option to LoadIncrementalHFiles which allows skipping unmatched column families | Major | . | +| [HBASE-16224](https://issues.apache.org/jira/browse/HBASE-16224) | Reduce the number of RPCs for the large PUTs | Minor | Client | +| [HBASE-16508](https://issues.apache.org/jira/browse/HBASE-16508) | Move UnexpectedStateException to common | Trivial | . | +| [HBASE-16486](https://issues.apache.org/jira/browse/HBASE-16486) | Unify system table creation using the same createSystemTable API. | Minor | proc-v2 | +| [HBASE-16448](https://issues.apache.org/jira/browse/HBASE-16448) | Custom metrics for custom replication endpoints | Major | Replication | +| [HBASE-16450](https://issues.apache.org/jira/browse/HBASE-16450) | Shell tool to dump replication queues | Major | Operability, Replication | +| [HBASE-16455](https://issues.apache.org/jira/browse/HBASE-16455) | Provide API for obtaining all the WAL files | Major | . | +| [HBASE-16422](https://issues.apache.org/jira/browse/HBASE-16422) | Tighten our guarantees on compatibility across patch versions | Major | documentation | +| [HBASE-16434](https://issues.apache.org/jira/browse/HBASE-16434) | Improve flaky dashboard | Minor | . | +| [HBASE-16419](https://issues.apache.org/jira/browse/HBASE-16419) | check REPLICATION\_SCOPE's value more stringently | Major | . | +| [HBASE-16385](https://issues.apache.org/jira/browse/HBASE-16385) | Have hbase-rest pull hbase.rest.port from Constants.java | Minor | REST | +| [HBASE-16379](https://issues.apache.org/jira/browse/HBASE-16379) | [replication] Minor improvement to replication/copy\_tables\_desc.rb | Trivial | Replication, shell | +| [HBASE-14345](https://issues.apache.org/jira/browse/HBASE-14345) | Consolidate printUsage in IntegrationTestLoadAndVerify | Trivial | integration tests | +| [HBASE-16299](https://issues.apache.org/jira/browse/HBASE-16299) | Update REST API scanner with ability to do reverse scan | Minor | REST | +| [HBASE-12770](https://issues.apache.org/jira/browse/HBASE-12770) | Don't transfer all the queued hlogs of a dead server to the same alive server | Minor | Replication | +| [HBASE-15882](https://issues.apache.org/jira/browse/HBASE-15882) | Upgrade to yetus precommit 0.3.0 | Critical | build | +| [HBASE-8386](https://issues.apache.org/jira/browse/HBASE-8386) | deprecate TableMapReduce.addDependencyJars(Configuration, class\ ...) | Major | mapreduce | +| [HBASE-16287](https://issues.apache.org/jira/browse/HBASE-16287) | LruBlockCache size should not exceed acceptableSize too many | Major | BlockCache | +| [HBASE-16225](https://issues.apache.org/jira/browse/HBASE-16225) | Refactor ScanQueryMatcher | Major | regionserver, Scanners | +| [HBASE-14881](https://issues.apache.org/jira/browse/HBASE-14881) | Provide a Put API that uses the provided row without coping | Major | . | +| [HBASE-16256](https://issues.apache.org/jira/browse/HBASE-16256) | Purpose of EnvironmentEdge, EnvironmentEdgeManager | Trivial | documentation, regionserver | +| [HBASE-16275](https://issues.apache.org/jira/browse/HBASE-16275) | Change ServerManager#onlineServers from ConcurrentHashMap to ConcurrentSkipListMap | Minor | . | +| [HBASE-14743](https://issues.apache.org/jira/browse/HBASE-14743) | Add metrics around HeapMemoryManager | Minor | . | +| [HBASE-16266](https://issues.apache.org/jira/browse/HBASE-16266) | Do not throw ScannerTimeoutException when catch UnknownScannerException | Major | Client, Scanners | +| [HBASE-16008](https://issues.apache.org/jira/browse/HBASE-16008) | A robust way deal with early termination of HBCK | Major | hbck | +| [HBASE-13701](https://issues.apache.org/jira/browse/HBASE-13701) | Consolidate SecureBulkLoadEndpoint into HBase core as default for bulk load | Major | . | +| [HBASE-16052](https://issues.apache.org/jira/browse/HBASE-16052) | Improve HBaseFsck Scalability | Major | hbck | +| [HBASE-16241](https://issues.apache.org/jira/browse/HBASE-16241) | Allow specification of annotations to use when running check\_compatibility.sh | Major | scripts | +| [HBASE-16231](https://issues.apache.org/jira/browse/HBASE-16231) | Integration tests should support client keytab login for secure clusters | Major | integration tests | +| [HBASE-16220](https://issues.apache.org/jira/browse/HBASE-16220) | Demote log level for "HRegionFileSystem - No StoreFiles for" messages to TRACE | Minor | . | +| [HBASE-16087](https://issues.apache.org/jira/browse/HBASE-16087) | Replication shouldn't start on a master if if only hosts system tables | Major | . | +| [HBASE-14548](https://issues.apache.org/jira/browse/HBASE-14548) | Expand how table coprocessor jar and dependency path can be specified | Major | Coprocessors | +| [HBASE-16108](https://issues.apache.org/jira/browse/HBASE-16108) | RowCounter should support multiple key ranges | Major | . | +| [HBASE-16140](https://issues.apache.org/jira/browse/HBASE-16140) | bump owasp.esapi from 2.1.0 to 2.1.0.1 | Major | dependencies | +| [HBASE-16114](https://issues.apache.org/jira/browse/HBASE-16114) | Get regionLocation of required regions only for MR jobs | Minor | mapreduce | +| [HBASE-16147](https://issues.apache.org/jira/browse/HBASE-16147) | Shell command for getting compaction state | Major | shell | +| [HBASE-16124](https://issues.apache.org/jira/browse/HBASE-16124) | Make check\_compatibility.sh less verbose when building HBase | Minor | build, test | +| [HBASE-16149](https://issues.apache.org/jira/browse/HBASE-16149) | Log the underlying RPC exception in RpcRetryingCallerImpl | Minor | . | +| [HBASE-16130](https://issues.apache.org/jira/browse/HBASE-16130) | Add comments to ProcedureStoreTracker | Minor | . | +| [HBASE-16139](https://issues.apache.org/jira/browse/HBASE-16139) | Use CellUtil instead of KeyValueUtil in Import | Minor | . | +| [HBASE-14007](https://issues.apache.org/jira/browse/HBASE-14007) | Writing to table through MR should fail upfront if table does not exist/is disabled | Minor | mapreduce | +| [HBASE-16089](https://issues.apache.org/jira/browse/HBASE-16089) | Add on FastPath for CoDel | Major | . | +| [HBASE-15353](https://issues.apache.org/jira/browse/HBASE-15353) | Add metric for number of CallQueueTooBigExceptions | Minor | IPC/RPC, metrics | +| [HBASE-16085](https://issues.apache.org/jira/browse/HBASE-16085) | Add on metric for failed compactions | Major | . | +| [HBASE-15870](https://issues.apache.org/jira/browse/HBASE-15870) | Specify columns in REST multi gets | Minor | REST | +| [HBASE-14397](https://issues.apache.org/jira/browse/HBASE-14397) | PrefixFilter doesn't filter all remaining rows if the prefix is longer than rowkey being compared | Minor | Filters | +| [HBASE-16042](https://issues.apache.org/jira/browse/HBASE-16042) | Add support in PE tool for InMemory Compaction | Major | . | +| [HBASE-15600](https://issues.apache.org/jira/browse/HBASE-15600) | Add provision for adding mutations to memstore or able to write to same region in batchMutate coprocessor hooks | Major | . | +| [HBASE-16018](https://issues.apache.org/jira/browse/HBASE-16018) | Better documentation of ReplicationPeers | Minor | . | +| [HBASE-16048](https://issues.apache.org/jira/browse/HBASE-16048) | Tag InternalScanner with LimitedPrivate(HBaseInterfaceAudience.COPROC) | Major | . | +| [HBASE-5291](https://issues.apache.org/jira/browse/HBASE-5291) | Add Kerberos HTTP SPNEGO authentication support to HBase web consoles | Major | master, regionserver, security | +| [HBASE-16033](https://issues.apache.org/jira/browse/HBASE-16033) | Add more details in logging of responseTooSlow/TooLarge | Major | Operability | +| [HBASE-16026](https://issues.apache.org/jira/browse/HBASE-16026) | Master UI should display status of additional ZK switches | Major | . | +| [HBASE-16004](https://issues.apache.org/jira/browse/HBASE-16004) | Update to Netty 4.1.1 | Major | . | +| [HBASE-15981](https://issues.apache.org/jira/browse/HBASE-15981) | Stripe and Date-tiered compactions inaccurately suggest disabling table in docs | Minor | documentation | +| [HBASE-15849](https://issues.apache.org/jira/browse/HBASE-15849) | Shell Cleanup: Simplify handling of commands' runtime | Minor | . | +| [HBASE-15931](https://issues.apache.org/jira/browse/HBASE-15931) | Add log for long-running tasks in AsyncProcess | Critical | Operability | +| [HBASE-15727](https://issues.apache.org/jira/browse/HBASE-15727) | Canary Tool for Zookeeper | Major | . | +| [HBASE-15910](https://issues.apache.org/jira/browse/HBASE-15910) | Update hbase ref guide to explain submit-patch.py | Major | documentation | +| [HBASE-15890](https://issues.apache.org/jira/browse/HBASE-15890) | Allow thrift to set/unset "cacheBlocks" for Scans | Major | Thrift | +| [HBASE-15854](https://issues.apache.org/jira/browse/HBASE-15854) | Log the cause of SASL connection failures | Minor | security | +| [HBASE-15837](https://issues.apache.org/jira/browse/HBASE-15837) | Memstore size accounting is wrong if postBatchMutate() throws exception | Major | regionserver | +| [HBASE-15471](https://issues.apache.org/jira/browse/HBASE-15471) | Add num calls in priority and general queue to RS UI | Major | UI | +| [HBASE-15802](https://issues.apache.org/jira/browse/HBASE-15802) | ConnectionUtils should use ThreadLocalRandom instead of Random | Minor | . | +| [HBASE-15529](https://issues.apache.org/jira/browse/HBASE-15529) | Override needBalance in StochasticLoadBalancer | Minor | . | +| [HBASE-15864](https://issues.apache.org/jira/browse/HBASE-15864) | Reuse the testing helper to wait regions in transition | Trivial | test | +| [HBASE-15843](https://issues.apache.org/jira/browse/HBASE-15843) | Replace RegionState.getRegionInTransition() Map with a Set | Trivial | master, Region Assignment | +| [HBASE-15593](https://issues.apache.org/jira/browse/HBASE-15593) | Time limit of scanning should be offered by client | Major | . | +| [HBASE-15667](https://issues.apache.org/jira/browse/HBASE-15667) | Add more clarity to Reference Guide related to importing Eclipse Formatter | Trivial | documentation | +| [HBASE-15842](https://issues.apache.org/jira/browse/HBASE-15842) | SnapshotInfo should display ownership information | Major | . | +| [HBASE-13532](https://issues.apache.org/jira/browse/HBASE-13532) | Make UnknownScannerException logging less scary | Trivial | . | +| [HBASE-15808](https://issues.apache.org/jira/browse/HBASE-15808) | Reduce potential bulk load intermediate space usage and waste | Minor | . | +| [HBASE-15415](https://issues.apache.org/jira/browse/HBASE-15415) | Improve Master WebUI snapshot information | Minor | master, snapshots | +| [HBASE-15609](https://issues.apache.org/jira/browse/HBASE-15609) | Remove PB references from Result, DoubleColumnInterpreter and any such public facing class for 2.0 | Blocker | . | +| [HBASE-15791](https://issues.apache.org/jira/browse/HBASE-15791) | Improve javadoc in ScheduledChore | Minor | master | +| [HBASE-15793](https://issues.apache.org/jira/browse/HBASE-15793) | Port over AsyncCall improvements | Major | rpc | +| [HBASE-15794](https://issues.apache.org/jira/browse/HBASE-15794) | Fix Findbugs instanceof always true issue in MultiServerCallable | Minor | . | +| [HBASE-15795](https://issues.apache.org/jira/browse/HBASE-15795) | Cleanup all classes in package org.apache.hadoop.hbase.ipc for code style | Minor | . | +| [HBASE-15745](https://issues.apache.org/jira/browse/HBASE-15745) | Refactor RPC classes to better accept async changes. | Major | . | +| [HBASE-15773](https://issues.apache.org/jira/browse/HBASE-15773) | CellCounter improvements | Major | mapreduce | +| [HBASE-15759](https://issues.apache.org/jira/browse/HBASE-15759) | RegionObserver.preStoreScannerOpen() doesn't have acces to current readpoint | Minor | Coprocessors | +| [HBASE-15608](https://issues.apache.org/jira/browse/HBASE-15608) | Remove PB references from SnapShot related Exceptions | Blocker | . | +| [HBASE-15767](https://issues.apache.org/jira/browse/HBASE-15767) | Upgrade httpclient dependency | Major | build, dependencies | +| [HBASE-15768](https://issues.apache.org/jira/browse/HBASE-15768) | fix capitalization of ZooKeeper usage | Trivial | documentation | +| [HBASE-15720](https://issues.apache.org/jira/browse/HBASE-15720) | Print row locks at the debug dump page | Major | . | +| [HBASE-15744](https://issues.apache.org/jira/browse/HBASE-15744) | Port over small format/text improvements from HBASE-13784 | Trivial | . | +| [HBASE-15551](https://issues.apache.org/jira/browse/HBASE-15551) | Make call queue too big exception use servername | Minor | . | +| [HBASE-15706](https://issues.apache.org/jira/browse/HBASE-15706) | HFilePrettyPrinter should print out nicely formatted tags | Minor | HFile | +| [HBASE-15686](https://issues.apache.org/jira/browse/HBASE-15686) | Add override mechanism for the exempt classes when dynamically loading table coprocessor | Major | Coprocessors | +| [HBASE-15680](https://issues.apache.org/jira/browse/HBASE-15680) | Examples in shell help message for TIMERANGE scanner specifications should use milliseconds instead of seconds | Trivial | shell | +| [HBASE-15688](https://issues.apache.org/jira/browse/HBASE-15688) | Use MasterServices directly instead of casting to HMaster when possible | Trivial | master | +| [HBASE-15641](https://issues.apache.org/jira/browse/HBASE-15641) | Shell "alter" should do a single modifyTable operation | Major | shell | +| [HBASE-15614](https://issues.apache.org/jira/browse/HBASE-15614) | Report metrics from JvmPauseMonitor | Major | metrics, regionserver | +| [HBASE-13129](https://issues.apache.org/jira/browse/HBASE-13129) | Add troubleshooting hints around WAL retention from replication | Major | documentation, Replication | +| [HBASE-15632](https://issues.apache.org/jira/browse/HBASE-15632) | Undo the checking of lastStoreFlushTimeMap.isEmpty() introduced in HBASE-13145 | Minor | regionserver | +| [HBASE-14985](https://issues.apache.org/jira/browse/HBASE-14985) | TimeRange constructors should set allTime when appropriate | Minor | . | +| [HBASE-15605](https://issues.apache.org/jira/browse/HBASE-15605) | Remove PB references from HCD and HTD for 2.0 | Blocker | . | +| [HBASE-15507](https://issues.apache.org/jira/browse/HBASE-15507) | Online modification of enabled ReplicationPeerConfig | Major | Replication | +| [HBASE-15612](https://issues.apache.org/jira/browse/HBASE-15612) | Minor improvements to CellCounter and RowCounter documentation | Trivial | documentation, mapreduce | +| [HBASE-15586](https://issues.apache.org/jira/browse/HBASE-15586) | Unify human readable numbers in the web UI | Major | . | +| [HBASE-15606](https://issues.apache.org/jira/browse/HBASE-15606) | Limit creating zk connection in HBaseAdmin#getCompactionState() only to case when 'hbase:meta' is checked. | Minor | Admin | +| [HBASE-15396](https://issues.apache.org/jira/browse/HBASE-15396) | Enhance mapreduce.TableSplit to add encoded region name | Minor | mapreduce | +| [HBASE-15571](https://issues.apache.org/jira/browse/HBASE-15571) | Make MasterProcedureManagerHost accessible through MasterServices | Major | . | +| [HBASE-15569](https://issues.apache.org/jira/browse/HBASE-15569) | Make Bytes.toStringBinary faster | Minor | Performance | +| [HBASE-14983](https://issues.apache.org/jira/browse/HBASE-14983) | Create metrics for per block type hit/miss ratios | Major | metrics | +| [HBASE-15191](https://issues.apache.org/jira/browse/HBASE-15191) | CopyTable and VerifyReplication - Option to specify batch size, versions | Minor | Replication | +| [HBASE-15508](https://issues.apache.org/jira/browse/HBASE-15508) | Add command for exporting snapshot in hbase command script | Minor | hbase, scripts, snapshots | +| [HBASE-15496](https://issues.apache.org/jira/browse/HBASE-15496) | Throw RowTooBigException only for user scan/get | Minor | Scanners | +| [HBASE-15526](https://issues.apache.org/jira/browse/HBASE-15526) | Make SnapshotManager accessible through MasterServices | Major | . | +| [HBASE-15486](https://issues.apache.org/jira/browse/HBASE-15486) | Avoid multiple disable/enable balancer calls while running rolling-restart.sh --graceful | Minor | scripts | +| [HBASE-15300](https://issues.apache.org/jira/browse/HBASE-15300) | Upgrade to zookeeper 3.4.8 | Minor | . | +| [HBASE-14703](https://issues.apache.org/jira/browse/HBASE-14703) | HTable.mutateRow does not collect stats | Major | Client | +| [HBASE-15475](https://issues.apache.org/jira/browse/HBASE-15475) | Allow TimestampsFilter to provide a seek hint | Major | Client, Filters, regionserver | +| [HBASE-15212](https://issues.apache.org/jira/browse/HBASE-15212) | RPCServer should enforce max request size | Major | . | +| [HBASE-15447](https://issues.apache.org/jira/browse/HBASE-15447) | Improve javadocs description for Delete methods | Minor | API, documentation | +| [HBASE-15478](https://issues.apache.org/jira/browse/HBASE-15478) | add comments to FSHLog explaining why syncRunnerIndex won't overflow | Minor | wal | +| [HBASE-14963](https://issues.apache.org/jira/browse/HBASE-14963) | Remove use of Guava Stopwatch from HBase client code | Major | Client | +| [HBASE-15451](https://issues.apache.org/jira/browse/HBASE-15451) | Remove unnecessary wait in MVCC | Major | . | +| [HBASE-15456](https://issues.apache.org/jira/browse/HBASE-15456) | CreateTableProcedure/ModifyTableProcedure needs to fail when there is no family in table descriptor | Minor | master | +| [HBASE-12940](https://issues.apache.org/jira/browse/HBASE-12940) | Expose listPeerConfigs and getPeerConfig to the HBase shell | Major | shell | +| [HBASE-15470](https://issues.apache.org/jira/browse/HBASE-15470) | Add a setting for Priority queue length | Major | IPC/RPC, Region Assignment | +| [HBASE-15413](https://issues.apache.org/jira/browse/HBASE-15413) | Procedure-V2: print out ProcedureInfo during trace | Trivial | proc-v2 | +| [HBASE-15243](https://issues.apache.org/jira/browse/HBASE-15243) | Utilize the lowest seek value when all Filters in MUST\_PASS\_ONE FilterList return SEEK\_NEXT\_USING\_HINT | Major | . | +| [HBASE-15338](https://issues.apache.org/jira/browse/HBASE-15338) | Add a option to disable the data block cache for testing the performance of underlying file system | Minor | integration tests | +| [HBASE-15356](https://issues.apache.org/jira/browse/HBASE-15356) | Remove unused Imports | Trivial | . | +| [HBASE-14099](https://issues.apache.org/jira/browse/HBASE-14099) | StoreFile.passesKeyRangeFilter need not create Cells from the Scan's start and stop Row | Major | Performance, Scanners | +| [HBASE-15315](https://issues.apache.org/jira/browse/HBASE-15315) | Remove always set super user call as high priority | Major | . | +| [HBASE-15222](https://issues.apache.org/jira/browse/HBASE-15222) | Use less contended classes for metrics | Critical | metrics | +| [HBASE-15312](https://issues.apache.org/jira/browse/HBASE-15312) | Update the dependences of pom for mini cluster in HBase Book | Minor | documentation | +| [HBASE-15306](https://issues.apache.org/jira/browse/HBASE-15306) | Make RPC call queue length dynamically configurable | Major | IPC/RPC | +| [HBASE-11927](https://issues.apache.org/jira/browse/HBASE-11927) | Use Native Hadoop Library for HFile checksum (And flip default from CRC32 to CRC32C) | Major | Performance | +| [HBASE-15301](https://issues.apache.org/jira/browse/HBASE-15301) | Remove the never-thrown NamingException from TableInputFormatBase#reverseDNS method signature | Minor | . | +| [HBASE-15219](https://issues.apache.org/jira/browse/HBASE-15219) | Canary tool does not return non-zero exit code when one of regions is in stuck state | Critical | canary | +| [HBASE-15223](https://issues.apache.org/jira/browse/HBASE-15223) | Make convertScanToString public for Spark | Major | . | +| [HBASE-15229](https://issues.apache.org/jira/browse/HBASE-15229) | Canary Tools should not call System.Exit on error | Critical | canary | +| [HBASE-11792](https://issues.apache.org/jira/browse/HBASE-11792) | Organize PerformanceEvaluation usage output | Minor | Performance, test | +| [HBASE-15201](https://issues.apache.org/jira/browse/HBASE-15201) | Add hbase-spark to hbase assembly | Minor | . | +| [HBASE-15211](https://issues.apache.org/jira/browse/HBASE-15211) | Don't run the CatalogJanitor if there are regions in transition | Major | master | +| [HBASE-15197](https://issues.apache.org/jira/browse/HBASE-15197) | Expose filtered read requests metric to metrics framework and Web UI | Minor | . | +| [HBASE-15177](https://issues.apache.org/jira/browse/HBASE-15177) | Reduce garbage created under high load | Major | . | +| [HBASE-13376](https://issues.apache.org/jira/browse/HBASE-13376) | Improvements to Stochastic load balancer | Minor | Balancer | +| [HBASE-15129](https://issues.apache.org/jira/browse/HBASE-15129) | Set default value for hbase.fs.tmp.dir rather than fully depend on hbase-default.xml | Major | mapreduce | +| [HBASE-14969](https://issues.apache.org/jira/browse/HBASE-14969) | Add throughput controller for flush | Major | regionserver | +| [HBASE-15123](https://issues.apache.org/jira/browse/HBASE-15123) | Remove duplicate code in LocalHBaseCluster and minor formatting | Minor | . | +| [HBASE-14865](https://issues.apache.org/jira/browse/HBASE-14865) | Support passing multiple QOPs to SaslClient/Server via hbase.rpc.protection | Major | security | +| [HBASE-15119](https://issues.apache.org/jira/browse/HBASE-15119) | Include git SHA in check\_compatibility reports | Minor | build | +| [HBASE-13525](https://issues.apache.org/jira/browse/HBASE-13525) | Update test-patch to leverage Apache Yetus | Major | build | +| [HBASE-15076](https://issues.apache.org/jira/browse/HBASE-15076) | Add getScanner(Scan scan, List\ additionalScanners) API into Region interface | Critical | regionserver | +| [HBASE-15068](https://issues.apache.org/jira/browse/HBASE-15068) | Add metrics for region normalization plans | Major | . | +| [HBASE-14468](https://issues.apache.org/jira/browse/HBASE-14468) | Compaction improvements: FIFO compaction policy | Major | Compaction, Performance | +| [HBASE-15066](https://issues.apache.org/jira/browse/HBASE-15066) | Small improvements to Canary tool | Major | . | +| [HBASE-14524](https://issues.apache.org/jira/browse/HBASE-14524) | Short-circuit comparison of rows in CellComparator | Major | Performance, Scanners | +| [HBASE-15038](https://issues.apache.org/jira/browse/HBASE-15038) | ExportSnapshot should support separate configurations for source and destination clusters | Major | mapreduce, snapshots | +| [HBASE-15060](https://issues.apache.org/jira/browse/HBASE-15060) | Cull TestHFileWriterV2 and HFileWriterFactory | Major | HFile | +| [HBASE-15044](https://issues.apache.org/jira/browse/HBASE-15044) | Region normalization should be allowed when underlying namespace has quota | Major | Balancer | +| [HBASE-14796](https://issues.apache.org/jira/browse/HBASE-14796) | Enhance the Gets in the connector | Minor | . | +| [HBASE-13322](https://issues.apache.org/jira/browse/HBASE-13322) | Replace explicit HBaseAdmin creation with connection#getAdmin() | Minor | . | +| [HBASE-14800](https://issues.apache.org/jira/browse/HBASE-14800) | Expose checkAndMutate via Thrift2 | Major | Thrift | +| [HBASE-14684](https://issues.apache.org/jira/browse/HBASE-14684) | Try to remove all MiniMapReduceCluster in unit tests | Critical | test | +| [HBASE-13158](https://issues.apache.org/jira/browse/HBASE-13158) | When client supports CellBlock, return the result Cells as controller payload for get(Get) API also | Major | . | +| [HBASE-14976](https://issues.apache.org/jira/browse/HBASE-14976) | Add RPC call queues to the web ui | Minor | UI | +| [HBASE-15005](https://issues.apache.org/jira/browse/HBASE-15005) | Use value array in computing block length for 1.2 and 1.3 | Major | regionserver | +| [HBASE-14978](https://issues.apache.org/jira/browse/HBASE-14978) | Don't allow Multi to retain too many blocks | Blocker | io, IPC/RPC, regionserver | +| [HBASE-14780](https://issues.apache.org/jira/browse/HBASE-14780) | Integration Tests that run with ChaosMonkey need to specify CFs | Major | integration tests | +| [HBASE-14951](https://issues.apache.org/jira/browse/HBASE-14951) | Make hbase.regionserver.maxlogs obsolete | Minor | Performance, wal | +| [HBASE-14984](https://issues.apache.org/jira/browse/HBASE-14984) | Allow memcached block cache to set optimze to false | Major | BlockCache | +| [HBASE-13425](https://issues.apache.org/jira/browse/HBASE-13425) | Documentation nit in REST Gateway impersonation section | Minor | documentation | +| [HBASE-14795](https://issues.apache.org/jira/browse/HBASE-14795) | Enhance the spark-hbase scan operations | Minor | . | +| [HBASE-14946](https://issues.apache.org/jira/browse/HBASE-14946) | Don't allow multi's to over run the max result size. | Critical | Client, IPC/RPC | +| [HBASE-14906](https://issues.apache.org/jira/browse/HBASE-14906) | Improvements on FlushLargeStoresPolicy | Major | . | +| [HBASE-14866](https://issues.apache.org/jira/browse/HBASE-14866) | VerifyReplication should use peer configuration in peer connection | Major | Replication | +| [HBASE-7171](https://issues.apache.org/jira/browse/HBASE-7171) | Initial web UI for region/memstore/storefiles details | Major | UI | +| [HBASE-14719](https://issues.apache.org/jira/browse/HBASE-14719) | Add metric for number of MasterProcWALs | Major | . | +| [HBASE-14580](https://issues.apache.org/jira/browse/HBASE-14580) | Make the HBaseMiniCluster compliant with Kerberos | Major | security, test | +| [HBASE-14749](https://issues.apache.org/jira/browse/HBASE-14749) | Make changes to region\_mover.rb to use RegionMover Java tool | Major | . | +| [HBASE-14891](https://issues.apache.org/jira/browse/HBASE-14891) | Add log for uncaught exception in RegionServerMetricsWrapperRunnable | Minor | metrics | +| [HBASE-14859](https://issues.apache.org/jira/browse/HBASE-14859) | Better checkstyle reporting | Minor | . | +| [HBASE-14826](https://issues.apache.org/jira/browse/HBASE-14826) | Small improvement in KVHeap seek() API | Minor | . | +| [HBASE-14860](https://issues.apache.org/jira/browse/HBASE-14860) | Improve BoundedByteBufferPool; make lockless | Minor | . | +| [HBASE-14871](https://issues.apache.org/jira/browse/HBASE-14871) | Allow specifying the base branch for make\_patch | Major | . | +| [HBASE-14821](https://issues.apache.org/jira/browse/HBASE-14821) | CopyTable should allow overriding more config properties for peer cluster | Major | mapreduce | +| [HBASE-13347](https://issues.apache.org/jira/browse/HBASE-13347) | Deprecate FirstKeyValueMatchingQualifiersFilter | Minor | . | +| [HBASE-14862](https://issues.apache.org/jira/browse/HBASE-14862) | Add support for reporting p90 for histogram metrics | Minor | metrics | +| [HBASE-14172](https://issues.apache.org/jira/browse/HBASE-14172) | Upgrade existing thrift binding using thrift 0.9.3 compiler. | Minor | . | +| [HBASE-14829](https://issues.apache.org/jira/browse/HBASE-14829) | Add more checkstyles | Major | . | +| [HBASE-14805](https://issues.apache.org/jira/browse/HBASE-14805) | status should show the master in shell | Major | shell | +| [HBASE-14708](https://issues.apache.org/jira/browse/HBASE-14708) | Use copy on write Map for region location cache | Critical | Client | +| [HBASE-14766](https://issues.apache.org/jira/browse/HBASE-14766) | In WALEntryFilter, cell.getFamily() needs to be replaced with the new low-cost implementation | Major | . | +| [HBASE-14387](https://issues.apache.org/jira/browse/HBASE-14387) | Compaction improvements: Maximum off-peak compaction size | Major | Compaction, Performance | +| [HBASE-14693](https://issues.apache.org/jira/browse/HBASE-14693) | Add client-side metrics for received pushback signals | Major | Client, metrics | +| [HBASE-14765](https://issues.apache.org/jira/browse/HBASE-14765) | Remove snappy profile | Major | build | +| [HBASE-14752](https://issues.apache.org/jira/browse/HBASE-14752) | Add example of using the HBase client in a multi-threaded environment | Minor | Client | +| [HBASE-14666](https://issues.apache.org/jira/browse/HBASE-14666) | Remove deprecated HBaseTestingUtility#deleteTable methods | Major | test | +| [HBASE-12986](https://issues.apache.org/jira/browse/HBASE-12986) | Compaction pressure based client pushback | Major | . | +| [HBASE-12822](https://issues.apache.org/jira/browse/HBASE-12822) | Option for Unloading regions through region\_mover.rb without Acknowledging | Minor | . | +| [HBASE-13742](https://issues.apache.org/jira/browse/HBASE-13742) | buildbot should run link checker over book | Major | documentation | +| [HBASE-14700](https://issues.apache.org/jira/browse/HBASE-14700) | Support a "permissive" mode for secure clusters to allow "simple" auth clients | Major | security | +| [HBASE-14715](https://issues.apache.org/jira/browse/HBASE-14715) | Add javadocs to DelegatingRetryingCallable | Trivial | Client | +| [HBASE-13014](https://issues.apache.org/jira/browse/HBASE-13014) | Java Tool For Region Moving | Major | . | +| [HBASE-14731](https://issues.apache.org/jira/browse/HBASE-14731) | Add -DuseMob option to ITBLL | Major | . | +| [HBASE-14687](https://issues.apache.org/jira/browse/HBASE-14687) | Un-synchronize BufferedMutator | Critical | Client, Performance | +| [HBASE-14721](https://issues.apache.org/jira/browse/HBASE-14721) | Memstore add cells - Avoid many garbage | Major | regionserver | +| [HBASE-14714](https://issues.apache.org/jira/browse/HBASE-14714) | some cleanup to snapshot code | Trivial | snapshots | +| [HBASE-14675](https://issues.apache.org/jira/browse/HBASE-14675) | Exorcise deprecated Put#add(...) and replace with Put#addColumn(...) | Major | . | +| [HBASE-14672](https://issues.apache.org/jira/browse/HBASE-14672) | Exorcise deprecated Delete#delete\* apis | Major | . | +| [HBASE-12769](https://issues.apache.org/jira/browse/HBASE-12769) | Replication fails to delete all corresponding zk nodes when peer is removed | Minor | Replication | +| [HBASE-14696](https://issues.apache.org/jira/browse/HBASE-14696) | Support setting allowPartialResults in mapreduce Mappers | Major | mapreduce | +| [HBASE-14266](https://issues.apache.org/jira/browse/HBASE-14266) | RegionServers have a lock contention of Configuration.getProps | Critical | regionserver | +| [HBASE-14683](https://issues.apache.org/jira/browse/HBASE-14683) | Batching in buffered mutator is awful when adding lists of mutations. | Major | Client | +| [HBASE-14670](https://issues.apache.org/jira/browse/HBASE-14670) | Remove deprecated HBaseTestCase from TestBlocksRead | Major | test | +| [HBASE-14669](https://issues.apache.org/jira/browse/HBASE-14669) | remove unused import and fix javadoc | Trivial | . | +| [HBASE-14671](https://issues.apache.org/jira/browse/HBASE-14671) | Remove deprecated HBaseTestCase/Put/Delete apis from TestGetClosestAtOrBefore | Major | test | +| [HBASE-14665](https://issues.apache.org/jira/browse/HBASE-14665) | Remove deprecated HBaseTestingUtility#createTable methods | Major | test | +| [HBASE-14668](https://issues.apache.org/jira/browse/HBASE-14668) | Remove deprecated HBaseTestCase dependency from TestHFile | Major | test | +| [HBASE-14643](https://issues.apache.org/jira/browse/HBASE-14643) | Avoid Splits from once again opening a closed reader for fetching the first and last key | Major | regionserver | +| [HBASE-14586](https://issues.apache.org/jira/browse/HBASE-14586) | Use a maven profile to run Jacoco analysis | Minor | pom | +| [HBASE-14268](https://issues.apache.org/jira/browse/HBASE-14268) | Improve KeyLocker | Minor | util | +| [HBASE-14588](https://issues.apache.org/jira/browse/HBASE-14588) | Stop accessing test resources from within src folder | Major | build, test | +| [HBASE-14587](https://issues.apache.org/jira/browse/HBASE-14587) | Attach a test-sources.jar for hbase-server | Major | build | +| [HBASE-14582](https://issues.apache.org/jira/browse/HBASE-14582) | Regionserver status webpage bucketcache list can become huge | Major | regionserver | +| [HBASE-14517](https://issues.apache.org/jira/browse/HBASE-14517) | Show regionserver's version in master status page | Minor | monitoring | +| [HBASE-14565](https://issues.apache.org/jira/browse/HBASE-14565) | Make ZK connection timeout configurable in MiniZooKeeperCluster | Major | . | +| [HBASE-14574](https://issues.apache.org/jira/browse/HBASE-14574) | TableOutputFormat#getRecordWriter javadoc misleads | Major | . | +| [HBASE-14573](https://issues.apache.org/jira/browse/HBASE-14573) | Edit on the ByteBufferedCell javadoc | Major | documentation | +| [HBASE-14436](https://issues.apache.org/jira/browse/HBASE-14436) | HTableDescriptor#addCoprocessor will always make RegionCoprocessorHost create new Configuration | Minor | Coprocessors | +| [HBASE-14520](https://issues.apache.org/jira/browse/HBASE-14520) | Optimize the number of calls for tags creation in bulk load | Major | . | +| [HBASE-14547](https://issues.apache.org/jira/browse/HBASE-14547) | Add more debug/trace to zk-procedure | Trivial | snapshots | +| [HBASE-14230](https://issues.apache.org/jira/browse/HBASE-14230) | replace reflection in FSHlog with HdfsDataOutputStream#getCurrentBlockReplication() | Minor | wal | +| [HBASE-14478](https://issues.apache.org/jira/browse/HBASE-14478) | A ThreadPoolExecutor with a LinkedBlockingQueue cannot execute tasks concurrently | Major | regionserver | +| [HBASE-14455](https://issues.apache.org/jira/browse/HBASE-14455) | Try to get rid of unused HConnection instance | Minor | . | +| [HBASE-14193](https://issues.apache.org/jira/browse/HBASE-14193) | Remove support for direct upgrade from pre-0.96 versions | Minor | . | +| [HBASE-14461](https://issues.apache.org/jira/browse/HBASE-14461) | Cleanup IncreasingToUpperBoundRegionSplitPolicy | Minor | . | +| [HBASE-14448](https://issues.apache.org/jira/browse/HBASE-14448) | Refine RegionGroupingProvider Phase-2: remove provider nesting and formalize wal group name | Major | . | +| [HBASE-14082](https://issues.apache.org/jira/browse/HBASE-14082) | Add replica id to JMX metrics names | Major | metrics | +| [HBASE-14334](https://issues.apache.org/jira/browse/HBASE-14334) | Move Memcached block cache in to it's own optional module. | Major | BlockCache, build, Operability | +| [HBASE-14306](https://issues.apache.org/jira/browse/HBASE-14306) | Refine RegionGroupingProvider: fix issues and make it more scalable | Major | wal | +| [HBASE-6617](https://issues.apache.org/jira/browse/HBASE-6617) | ReplicationSourceManager should be able to track multiple WAL paths | Major | Replication | +| [HBASE-14314](https://issues.apache.org/jira/browse/HBASE-14314) | Metrics for block cache should take region replicas into account | Major | metrics, regionserver | +| [HBASE-12988](https://issues.apache.org/jira/browse/HBASE-12988) | [Replication]Parallel apply edits across regions | Major | Replication | +| [HBASE-14261](https://issues.apache.org/jira/browse/HBASE-14261) | Enhance Chaos Monkey framework by adding zookeeper and datanode fault injections. | Major | integration tests | +| [HBASE-7972](https://issues.apache.org/jira/browse/HBASE-7972) | Add a configuration for the TCP backlog in the Thrift server | Major | Thrift | +| [HBASE-14332](https://issues.apache.org/jira/browse/HBASE-14332) | Show the table state when we encounter exception while disabling / enabling table | Minor | . | +| [HBASE-14325](https://issues.apache.org/jira/browse/HBASE-14325) | Add snapshotinfo command to hbase script | Minor | scripts | +| [HBASE-14309](https://issues.apache.org/jira/browse/HBASE-14309) | Allow load balancer to operate when there is region in transition by adding force flag | Major | . | +| [HBASE-14078](https://issues.apache.org/jira/browse/HBASE-14078) | improve error message when HMaster can't bind to port | Major | master | +| [HBASE-13127](https://issues.apache.org/jira/browse/HBASE-13127) | Add timeouts on all tests so less zombie sightings | Major | test | +| [HBASE-13996](https://issues.apache.org/jira/browse/HBASE-13996) | Add write sniffing in canary | Major | canary | +| [HBASE-14260](https://issues.apache.org/jira/browse/HBASE-14260) | don't build javadocs for hbase-protocol module | Major | build, documentation | +| [HBASE-14148](https://issues.apache.org/jira/browse/HBASE-14148) | Web UI Framable Page | Major | security, UI | +| [HBASE-14165](https://issues.apache.org/jira/browse/HBASE-14165) | The initial size of RWQueueRpcExecutor.queues should be (numWriteQueues + numReadQueues + numScanQueues) | Minor | IPC/RPC | +| [HBASE-14203](https://issues.apache.org/jira/browse/HBASE-14203) | remove duplicate code getTableDescriptor in HTable | Trivial | . | +| [HBASE-13914](https://issues.apache.org/jira/browse/HBASE-13914) | Minor improvements to dev-support/publish\_hbase\_website.sh | Minor | website | +| [HBASE-12812](https://issues.apache.org/jira/browse/HBASE-12812) | Update Netty dependency to latest release | Major | . | +| [HBASE-13985](https://issues.apache.org/jira/browse/HBASE-13985) | Add configuration to skip validating HFile format when bulk loading | Minor | . | +| [HBASE-14122](https://issues.apache.org/jira/browse/HBASE-14122) | Client API for determining if server side supports cell level security | Minor | . | +| [HBASE-14194](https://issues.apache.org/jira/browse/HBASE-14194) | Undeprecate methods in ThriftServerRunner.HBaseHandler | Trivial | . | +| [HBASE-12256](https://issues.apache.org/jira/browse/HBASE-12256) | Update patch submission guidelines to call out binary file support | Minor | documentation | +| [HBASE-13965](https://issues.apache.org/jira/browse/HBASE-13965) | Stochastic Load Balancer JMX Metrics | Major | Balancer, metrics | +| [HBASE-14164](https://issues.apache.org/jira/browse/HBASE-14164) | Display primary region replicas distribution on table.jsp | Minor | . | +| [HBASE-14097](https://issues.apache.org/jira/browse/HBASE-14097) | Log link to client scan troubleshooting section when scanner exceptions happen. | Trivial | . | +| [HBASE-14152](https://issues.apache.org/jira/browse/HBASE-14152) | Fix the warnings in Checkstyle and FindBugs brought in by merging hbase-11339 | Major | mob | +| [HBASE-14151](https://issues.apache.org/jira/browse/HBASE-14151) | Remove the unnecessary file ProtobufUtil.java.rej which is brought in by merging hbase-11339 | Major | mob | +| [HBASE-14058](https://issues.apache.org/jira/browse/HBASE-14058) | Stabilizing default heap memory tuner | Major | regionserver | +| [HBASE-14110](https://issues.apache.org/jira/browse/HBASE-14110) | Add CostFunction for balancing primary region replicas | Major | Balancer | +| [HBASE-8642](https://issues.apache.org/jira/browse/HBASE-8642) | [Snapshot] List and delete snapshot by table | Major | snapshots | +| [HBASE-14045](https://issues.apache.org/jira/browse/HBASE-14045) | Bumping thrift version to 0.9.2. | Major | . | +| [HBASE-12596](https://issues.apache.org/jira/browse/HBASE-12596) | bulkload needs to follow locality | Major | HFile, regionserver | +| [HBASE-13927](https://issues.apache.org/jira/browse/HBASE-13927) | Allow hbase-daemon.sh to conditionally redirect the log or not | Major | shell | +| [HBASE-14002](https://issues.apache.org/jira/browse/HBASE-14002) | Add --noReplicationSetup option to IntegrationTestReplication | Major | integration tests | +| [HBASE-13925](https://issues.apache.org/jira/browse/HBASE-13925) | Use zookeeper multi to clear znodes in ZKProcedureUtil | Major | Zookeeper | +| [HBASE-13500](https://issues.apache.org/jira/browse/HBASE-13500) | Deprecate KVComparator and move to CellComparator | Major | . | +| [HBASE-14015](https://issues.apache.org/jira/browse/HBASE-14015) | Allow setting a richer state value when toString a pv2 | Minor | proc-v2 | +| [HBASE-13980](https://issues.apache.org/jira/browse/HBASE-13980) | Distinguish blockedFlushCount vs unblockedFlushCount when tuning heap memory | Minor | . | +| [HBASE-13670](https://issues.apache.org/jira/browse/HBASE-13670) | [HBase MOB] ExpiredMobFileCleaner tool deletes mob files later for one more day after they are expired | Major | documentation, mob | +| [HBASE-13943](https://issues.apache.org/jira/browse/HBASE-13943) | Get rid of KeyValue#heapSizeWithoutTags | Major | . | +| [HBASE-14001](https://issues.apache.org/jira/browse/HBASE-14001) | Optimize write(OutputStream out, boolean withTags) for SizeCachedNoTagsKeyValue | Minor | . | +| [HBASE-13103](https://issues.apache.org/jira/browse/HBASE-13103) | [ergonomics] add region size balancing as a feature of master | Major | Balancer, Usability | +| [HBASE-13900](https://issues.apache.org/jira/browse/HBASE-13900) | duplicate methods between ProtobufMagic and ProtobufUtil | Minor | . | +| [HBASE-13931](https://issues.apache.org/jira/browse/HBASE-13931) | Move Unsafe based operations to UnsafeAccess | Major | . | +| [HBASE-13917](https://issues.apache.org/jira/browse/HBASE-13917) | Remove string comparison to identify request priority | Minor | regionserver | +| [HBASE-13876](https://issues.apache.org/jira/browse/HBASE-13876) | Improving performance of HeapMemoryManager | Minor | hbase, regionserver | +| [HBASE-13247](https://issues.apache.org/jira/browse/HBASE-13247) | Change BufferedMutatorExample to use addColumn() since add() is deprecated | Trivial | Client | +| [HBASE-13894](https://issues.apache.org/jira/browse/HBASE-13894) | Avoid visitor alloc each call of ByteBufferArray get/putMultiple() | Minor | regionserver | +| [HBASE-13829](https://issues.apache.org/jira/browse/HBASE-13829) | Add more ThrottleType | Major | Client | +| [HBASE-13755](https://issues.apache.org/jira/browse/HBASE-13755) | Provide single super user check implementation | Major | security | +| [HBASE-13848](https://issues.apache.org/jira/browse/HBASE-13848) | Access InfoServer SSL passwords through Credential Provder API | Major | security | +| [HBASE-13828](https://issues.apache.org/jira/browse/HBASE-13828) | Add group permissions testing coverage to AC. | Major | test | +| [HBASE-13846](https://issues.apache.org/jira/browse/HBASE-13846) | Run MiniCluster on top of other MiniDfsCluster | Minor | test | +| [HBASE-13816](https://issues.apache.org/jira/browse/HBASE-13816) | Build shaded modules only in release profile | Major | build | +| [HBASE-13344](https://issues.apache.org/jira/browse/HBASE-13344) | Add enforcer rule that matches our JDK support statement | Minor | build | +| [HBASE-13761](https://issues.apache.org/jira/browse/HBASE-13761) | Optimize FuzzyRowFilter | Minor | Filters | +| [HBASE-13710](https://issues.apache.org/jira/browse/HBASE-13710) | Remove use of Hadoop's ReflectionUtil in favor of our own. | Minor | . | +| [HBASE-13780](https://issues.apache.org/jira/browse/HBASE-13780) | Default to 700 for HDFS root dir permissions for secure deployments | Major | Operability, security | +| [HBASE-13671](https://issues.apache.org/jira/browse/HBASE-13671) | More classes to add to the invoking repository of org.apache.hadoop.hbase.mapreduce.driver | Major | mapreduce | +| [HBASE-13745](https://issues.apache.org/jira/browse/HBASE-13745) | Say why a flush was requested in log message | Minor | Operability | +| [HBASE-13645](https://issues.apache.org/jira/browse/HBASE-13645) | Rename \*column methods in MasterObserver to \*columnFamily | Minor | . | +| [HBASE-13725](https://issues.apache.org/jira/browse/HBASE-13725) | [documentation] Pseudo-Distributed Local Install can link to hadoop instructions | Minor | . | +| [HBASE-13656](https://issues.apache.org/jira/browse/HBASE-13656) | Rename getDeadServers to getDeadServersSize in Admin | Minor | . | +| [HBASE-13675](https://issues.apache.org/jira/browse/HBASE-13675) | ProcedureExecutor completion report should be at DEBUG log level | Minor | . | +| [HBASE-13673](https://issues.apache.org/jira/browse/HBASE-13673) | WALProcedureStore procedure is chatty | Minor | . | +| [HBASE-13677](https://issues.apache.org/jira/browse/HBASE-13677) | RecoverableZookeeper WARNs on expected events | Minor | . | +| [HBASE-13684](https://issues.apache.org/jira/browse/HBASE-13684) | Allow mlockagent to be used when not starting as root | Minor | . | +| [HBASE-13655](https://issues.apache.org/jira/browse/HBASE-13655) | Deprecate duplicate getCompression methods in HColumnDescriptor | Minor | . | +| [HBASE-13251](https://issues.apache.org/jira/browse/HBASE-13251) | Correct 'HBase, MapReduce, and the CLASSPATH' section in HBase Ref Guide | Major | documentation | +| [HBASE-13598](https://issues.apache.org/jira/browse/HBASE-13598) | Make hbase assembly 'attach' to the project | Minor | . | +| [HBASE-12415](https://issues.apache.org/jira/browse/HBASE-12415) | Add add(byte[][] arrays) to Bytes. | Major | API, Client | +| [HBASE-13358](https://issues.apache.org/jira/browse/HBASE-13358) | Upgrade VisibilityClient API to accept Connection object. | Minor | API, security | +| [HBASE-13420](https://issues.apache.org/jira/browse/HBASE-13420) | RegionEnvironment.offerExecutionLatency Blocks Threads under Heavy Load | Major | Coprocessors, metrics, Performance | +| [HBASE-13351](https://issues.apache.org/jira/browse/HBASE-13351) | Annotate internal MasterRpcServices methods with admin priority | Major | master | +| [HBASE-13431](https://issues.apache.org/jira/browse/HBASE-13431) | Allow to skip store file range check based on column family while creating reference files in HRegionFileSystem#splitStoreFile | Major | . | +| [HBASE-13578](https://issues.apache.org/jira/browse/HBASE-13578) | Remove Arrays.asList().subList() from FSHLog.offer() | Trivial | wal | +| [HBASE-13518](https://issues.apache.org/jira/browse/HBASE-13518) | Typo in hbase.hconnection.meta.lookup.threads.core parameter | Major | . | +| [HBASE-13516](https://issues.apache.org/jira/browse/HBASE-13516) | Increase PermSize to 128MB | Major | . | +| [HBASE-13255](https://issues.apache.org/jira/browse/HBASE-13255) | Bad grammar in RegionServer status page | Trivial | monitoring | +| [HBASE-13334](https://issues.apache.org/jira/browse/HBASE-13334) | FindBugs should create precise report for new bugs introduced | Minor | build | +| [HBASE-13550](https://issues.apache.org/jira/browse/HBASE-13550) | [Shell] Support unset of a list of table attributes | Minor | . | +| [HBASE-13552](https://issues.apache.org/jira/browse/HBASE-13552) | ChoreService shutdown message could be more informative | Trivial | . | +| [HBASE-13534](https://issues.apache.org/jira/browse/HBASE-13534) | Change HBase master WebUI to explicitly mention if it is a backup master | Minor | master, UI | +| [HBASE-13456](https://issues.apache.org/jira/browse/HBASE-13456) | Improve HFilePrettyPrinter first hbase:meta region processing | Minor | util | +| [HBASE-12987](https://issues.apache.org/jira/browse/HBASE-12987) | HBCK should print status while scanning over many regions | Major | hbck, Usability | +| [HBASE-13350](https://issues.apache.org/jira/browse/HBASE-13350) | Add a debug-warn if we fail HTD checks even if table.sanity.checks is false | Trivial | master, Operability | +| [HBASE-13453](https://issues.apache.org/jira/browse/HBASE-13453) | Master should not bind to region server ports | Critical | . | +| [HBASE-13419](https://issues.apache.org/jira/browse/HBASE-13419) | Thrift gateway should propagate text from exception causes. | Major | Thrift | +| [HBASE-13436](https://issues.apache.org/jira/browse/HBASE-13436) | Include user name in ADE for scans | Minor | . | +| [HBASE-13381](https://issues.apache.org/jira/browse/HBASE-13381) | Expand TestSizeFailures to include small scans | Minor | test | +| [HBASE-13270](https://issues.apache.org/jira/browse/HBASE-13270) | Setter for Result#getStats is #addResults; confusing! | Major | Client | +| [HBASE-13362](https://issues.apache.org/jira/browse/HBASE-13362) | Set max result size from client only (like scanner caching). | Major | . | +| [HBASE-11864](https://issues.apache.org/jira/browse/HBASE-11864) | Enhance HLogPrettyPrinter to print information from WAL Header | Minor | . | +| [HBASE-13370](https://issues.apache.org/jira/browse/HBASE-13370) | PE tool could give option for using Explicit Column Tracker which leads to seeks | Major | . | +| [HBASE-6919](https://issues.apache.org/jira/browse/HBASE-6919) | Remove unnecessary throws IOException from Bytes.readVLong | Minor | . | +| [HBASE-12891](https://issues.apache.org/jira/browse/HBASE-12891) | Parallel execution for Hbck checkRegionConsistency | Major | hbck | +| [HBASE-13341](https://issues.apache.org/jira/browse/HBASE-13341) | Add option to disable filtering on interface annotations for the API compatibility report | Minor | . | +| [HBASE-13340](https://issues.apache.org/jira/browse/HBASE-13340) | Include LimitedPrivate interfaces in the API compatibility report | Minor | API | +| [HBASE-13366](https://issues.apache.org/jira/browse/HBASE-13366) | Throw DoNotRetryIOException instead of read only IOException | Minor | . | +| [HBASE-13345](https://issues.apache.org/jira/browse/HBASE-13345) | Fix LocalHBaseCluster so that different region server impl can be used for different slaves | Minor | . | +| [HBASE-13348](https://issues.apache.org/jira/browse/HBASE-13348) | Separate the thread number configs for meta server and server operations | Minor | master | +| [HBASE-12975](https://issues.apache.org/jira/browse/HBASE-12975) | Supportable SplitTransaction and RegionMergeTransaction interfaces | Major | . | +| [HBASE-13369](https://issues.apache.org/jira/browse/HBASE-13369) | Expose scanNext stats to region server level | Major | . | +| [HBASE-13222](https://issues.apache.org/jira/browse/HBASE-13222) | Provide means of non-destructive balancer inspection | Minor | Balancer | +| [HBASE-13316](https://issues.apache.org/jira/browse/HBASE-13316) | Reduce the downtime on planned moves of regions | Minor | Balancer | +| [HBASE-13342](https://issues.apache.org/jira/browse/HBASE-13342) | Fix incorrect interface annotations | Major | . | +| [HBASE-13199](https://issues.apache.org/jira/browse/HBASE-13199) | Some small improvements on canary tool | Major | . | +| [HBASE-13286](https://issues.apache.org/jira/browse/HBASE-13286) | Minimum timeout for a rpc call could be 1 ms instead of 2 seconds | Minor | Client | +| [HBASE-13241](https://issues.apache.org/jira/browse/HBASE-13241) | Add tests for group level grants | Critical | security, test | +| [HBASE-13235](https://issues.apache.org/jira/browse/HBASE-13235) | Revisit the security auditing semantics. | Major | . | +| [HBASE-13216](https://issues.apache.org/jira/browse/HBASE-13216) | Add version info in RPC connection header | Minor | Client, IPC/RPC | +| [HBASE-13109](https://issues.apache.org/jira/browse/HBASE-13109) | Make better SEEK vs SKIP decisions during scanning | Major | . | +| [HBASE-13256](https://issues.apache.org/jira/browse/HBASE-13256) | HBaseConfiguration#checkDefaultsVersion(Configuration) has spelling error | Trivial | Client | +| [HBASE-13223](https://issues.apache.org/jira/browse/HBASE-13223) | Add testMoveMeta to IntegrationTestMTTR | Major | integration tests | +| [HBASE-13240](https://issues.apache.org/jira/browse/HBASE-13240) | add an exemption to test-patch for build-only changes. | Minor | build | +| [HBASE-13236](https://issues.apache.org/jira/browse/HBASE-13236) | Clean up m2e-related warnings/errors from poms | Minor | build | +| [HBASE-13162](https://issues.apache.org/jira/browse/HBASE-13162) | Add capability for cleaning hbase acls to hbase cleanup script. | Minor | . | +| [HBASE-12405](https://issues.apache.org/jira/browse/HBASE-12405) | WAL accounting by Store | Major | wal | +| [HBASE-13185](https://issues.apache.org/jira/browse/HBASE-13185) | Document hbase.regionserver.thrift.framed.max\_frame\_size\_in\_mb more clearly | Trivial | documentation | +| [HBASE-13183](https://issues.apache.org/jira/browse/HBASE-13183) | Make ZK tickTime configurable in standalone HBase | Minor | master | +| [HBASE-12706](https://issues.apache.org/jira/browse/HBASE-12706) | Support multiple port numbers in ZK quorum string | Critical | . | +| [HBASE-13142](https://issues.apache.org/jira/browse/HBASE-13142) | [PERF] Reuse the IPCUtil#buildCellBlock buffer | Major | Performance | +| [HBASE-13122](https://issues.apache.org/jira/browse/HBASE-13122) | Improve efficiency for return codes of some filters | Major | Filters | +| [HBASE-13128](https://issues.apache.org/jira/browse/HBASE-13128) | Make HBCK's lock file retry creation and deletion | Minor | hbck | +| [HBASE-13100](https://issues.apache.org/jira/browse/HBASE-13100) | Shell command to retrieve table splits | Minor | shell | +| [HBASE-13132](https://issues.apache.org/jira/browse/HBASE-13132) | Improve RemoveColumn action debug message | Trivial | integration tests | +| [HBASE-13138](https://issues.apache.org/jira/browse/HBASE-13138) | Clean up TestMasterObserver (debug, trying to figure why fails) | Major | test | +| [HBASE-13120](https://issues.apache.org/jira/browse/HBASE-13120) | Allow disabling hadoop classpath and native library lookup | Major | hbase | +| [HBASE-13086](https://issues.apache.org/jira/browse/HBASE-13086) | Show ZK root node on Master WebUI | Minor | master | +| [HBASE-13080](https://issues.apache.org/jira/browse/HBASE-13080) | Hbase shell message containing extra quote at the end of error message. | Trivial | . | +| [HBASE-13054](https://issues.apache.org/jira/browse/HBASE-13054) | Provide more tracing information for locking/latching events. | Major | . | +| [HBASE-13056](https://issues.apache.org/jira/browse/HBASE-13056) | Refactor table.jsp code to remove repeated code and make it easier to add new checks | Major | . | +| [HBASE-13002](https://issues.apache.org/jira/browse/HBASE-13002) | Make encryption cipher configurable | Major | . | +| [HBASE-13059](https://issues.apache.org/jira/browse/HBASE-13059) | Set executable bit for scripts in dev-support | Trivial | scripts | +| [HBASE-13044](https://issues.apache.org/jira/browse/HBASE-13044) | Configuration option for disabling coprocessor loading | Minor | . | +| [HBASE-13018](https://issues.apache.org/jira/browse/HBASE-13018) | WALSplitter should not try to get table states while splitting META | Critical | . | +| [HBASE-13016](https://issues.apache.org/jira/browse/HBASE-13016) | Clean up remnants of table states stored in table descriptors | Major | . | +| [HBASE-12035](https://issues.apache.org/jira/browse/HBASE-12035) | Keep table state in META | Critical | Client, master | +| [HBASE-12982](https://issues.apache.org/jira/browse/HBASE-12982) | Adding timeouts to TestChoreService | Major | . | +| [HBASE-12957](https://issues.apache.org/jira/browse/HBASE-12957) | region\_mover#isSuccessfulScan may be extremely slow on region with lots of expired data | Minor | scripts | +| [HBASE-8329](https://issues.apache.org/jira/browse/HBASE-8329) | Limit compaction speed | Major | Compaction | +| [HBASE-12808](https://issues.apache.org/jira/browse/HBASE-12808) | Use Java API Compliance Checker for binary/source compatibility | Major | test | +| [HBASE-12627](https://issues.apache.org/jira/browse/HBASE-12627) | Add back snapshot batching facility from HBASE-11360 dropped by HBASE-11742 | Major | master, scaling | +| [HBASE-12896](https://issues.apache.org/jira/browse/HBASE-12896) | checkstyle report diff tool | Minor | build | +| [HBASE-12887](https://issues.apache.org/jira/browse/HBASE-12887) | Cleanup many checkstyle errors in o.a.h.h.client | Minor | build, Client | +| [HBASE-12840](https://issues.apache.org/jira/browse/HBASE-12840) | Improve unit test coverage of the client pushback mechanism | Major | . | +| [HBASE-12620](https://issues.apache.org/jira/browse/HBASE-12620) | Add HBASE-11639 related items to Ref Guide | Major | documentation | +| [HBASE-7541](https://issues.apache.org/jira/browse/HBASE-7541) | Convert all tests that use HBaseTestingUtility.createMultiRegions to HBA.createTable | Major | . | +| [HBASE-11144](https://issues.apache.org/jira/browse/HBASE-11144) | Filter to support scanning multiple row key ranges | Major | Filters | +| [HBASE-12839](https://issues.apache.org/jira/browse/HBASE-12839) | Remove synchronization in ServerStatisticsTracker | Minor | . | +| [HBASE-12796](https://issues.apache.org/jira/browse/HBASE-12796) | Clean up HTable and HBaseAdmin deprecated constructor usage | Major | . | +| [HBASE-12761](https://issues.apache.org/jira/browse/HBASE-12761) | On region jump ClientScanners should get next row start key instead of a skip. | Major | . | +| [HBASE-11869](https://issues.apache.org/jira/browse/HBASE-11869) | Support snapshot owner | Minor | . | +| [HBASE-12429](https://issues.apache.org/jira/browse/HBASE-12429) | Add port to ClusterManager's actions. | Major | integration tests | +| [HBASE-12590](https://issues.apache.org/jira/browse/HBASE-12590) | A solution for data skew in HBase-Mapreduce Job | Major | mapreduce | +| [HBASE-12223](https://issues.apache.org/jira/browse/HBASE-12223) | MultiTableInputFormatBase.getSplits is too slow | Minor | Client | +| [HBASE-10201](https://issues.apache.org/jira/browse/HBASE-10201) | Port 'Make flush decisions per column family' to trunk | Major | wal | +| [HBASE-12601](https://issues.apache.org/jira/browse/HBASE-12601) | Explain how to grant/revoke permission to a group/namespace in grant/revoke command usage | Minor | documentation, security, shell | +| [HBASE-12650](https://issues.apache.org/jira/browse/HBASE-12650) | Move ServerName to hbase-common module | Blocker | . | +| [HBASE-12559](https://issues.apache.org/jira/browse/HBASE-12559) | Provide LoadBalancer with online configuration capability | Major | . | +| [HBASE-11939](https://issues.apache.org/jira/browse/HBASE-11939) | Document compressed blockcache | Major | documentation | +| [HBASE-12207](https://issues.apache.org/jira/browse/HBASE-12207) | A script to help keep your Git repo fresh | Major | documentation, scripts | +| [HBASE-12251](https://issues.apache.org/jira/browse/HBASE-12251) | [book] Hadoop compat matrix 0.94 section needs cleaned up | Major | documentation | +| [HBASE-12220](https://issues.apache.org/jira/browse/HBASE-12220) | Add hedgedReads and hedgedReadWins metrics | Major | . | +| [HBASE-12195](https://issues.apache.org/jira/browse/HBASE-12195) | Fix dev-support/findHangingTests | Minor | test | +| [HBASE-12003](https://issues.apache.org/jira/browse/HBASE-12003) | Fix SecureBulkLoadEndpoint class javadoc formatting | Trivial | documentation, security | +| [HBASE-6290](https://issues.apache.org/jira/browse/HBASE-6290) | Add a function a mark a server as dead and start the recovery the process | Minor | monitoring | +| [HBASE-11862](https://issues.apache.org/jira/browse/HBASE-11862) | Get rid of Writables in HTableDescriptor, HColumnDescriptor | Minor | . | +| [HBASE-11760](https://issues.apache.org/jira/browse/HBASE-11760) | Tighten up region state transition | Major | Region Assignment | +| [HBASE-11611](https://issues.apache.org/jira/browse/HBASE-11611) | Clean up ZK-based region assignment | Major | Region Assignment | +| [HBASE-11585](https://issues.apache.org/jira/browse/HBASE-11585) | PE: Allows warm-up | Trivial | test | +| [HBASE-3135](https://issues.apache.org/jira/browse/HBASE-3135) | Make our MR jobs implement Tool and use ToolRunner so can do -D trickery, etc. | Major | . | +| [HBASE-11548](https://issues.apache.org/jira/browse/HBASE-11548) | [PE] Add 'cycling' test N times and unit tests for size/zipf/valueSize calculations | Trivial | test | +| [HBASE-11400](https://issues.apache.org/jira/browse/HBASE-11400) | Edit, consolidate, and update Compression and data encoding docs | Minor | documentation | +| [HBASE-5696](https://issues.apache.org/jira/browse/HBASE-5696) | Use Hadoop's DataOutputOutputStream instead of have a copy local | Major | . | +| [HBASE-11344](https://issues.apache.org/jira/browse/HBASE-11344) | Hide row keys and such from the web UIs | Major | . | +| [HBASE-6580](https://issues.apache.org/jira/browse/HBASE-6580) | Deprecate HTablePool in favor of HConnection.getTable(...) | Major | . | + + +### BUG FIXES: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-19924](https://issues.apache.org/jira/browse/HBASE-19924) | hbase rpc throttling does not work for multi() with request count rater. | Major | rpc | +| [HBASE-20293](https://issues.apache.org/jira/browse/HBASE-20293) | get\_splits returns duplicate split points when region replication is on | Minor | shell | +| [HBASE-20464](https://issues.apache.org/jira/browse/HBASE-20464) | Disable IMC | Major | in-memory-compaction | +| [HBASE-20442](https://issues.apache.org/jira/browse/HBASE-20442) | clean up incorrect use of commons-collections 3 | Major | dependencies, thirdparty | +| [HBASE-20440](https://issues.apache.org/jira/browse/HBASE-20440) | Clean up incorrect use of commons-lang 2.y | Major | dependencies | +| [HBASE-20439](https://issues.apache.org/jira/browse/HBASE-20439) | Clean up incorrect use of commons-logging in hbase-server | Minor | dependencies, logging | +| [HBASE-20398](https://issues.apache.org/jira/browse/HBASE-20398) | Redirect doesn't work on web UI | Major | UI | +| [HBASE-20399](https://issues.apache.org/jira/browse/HBASE-20399) | Fix merge layout | Minor | UI | +| [HBASE-20233](https://issues.apache.org/jira/browse/HBASE-20233) | [metrics] Ill-formatted numRegions metric in "Hadoop:service=HBase,name=RegionServer,sub=Regions" mbean | Trivial | metrics, Operability | +| [HBASE-20410](https://issues.apache.org/jira/browse/HBASE-20410) | upgrade protoc compiler to 3.5.1-1 | Critical | build, dependencies, Protobufs | +| [HBASE-20224](https://issues.apache.org/jira/browse/HBASE-20224) | Web UI is broken in standalone mode | Blocker | UI, Usability | +| [HBASE-20394](https://issues.apache.org/jira/browse/HBASE-20394) | HBase over rides the value of HBASE\_OPTS (if any) set by client | Minor | Operability | +| [HBASE-20397](https://issues.apache.org/jira/browse/HBASE-20397) | Make it more explicit that monkey.properties is found on CLASSPATH | Trivial | . | +| [HBASE-20376](https://issues.apache.org/jira/browse/HBASE-20376) | RowCounter and CellCounter documentations are incorrect | Minor | documentation, mapreduce | +| [HBASE-20330](https://issues.apache.org/jira/browse/HBASE-20330) | ProcedureExecutor.start() gets stuck in recover lease on store. | Major | proc-v2 | +| [HBASE-20350](https://issues.apache.org/jira/browse/HBASE-20350) | NullPointerException in Scanner during close() | Blocker | . | +| [HBASE-20280](https://issues.apache.org/jira/browse/HBASE-20280) | Fix possibility of deadlocking in refreshFileConnections when prefetch is enabled | Major | BucketCache | +| [HBASE-20310](https://issues.apache.org/jira/browse/HBASE-20310) | [hbck] bin/hbase hbck -metaonly shows false inconsistency on HBase 2 | Major | hbck | +| [HBASE-20219](https://issues.apache.org/jira/browse/HBASE-20219) | An error occurs when scanning with reversed=true and loadColumnFamiliesOnDemand=true | Critical | phoenix | +| [HBASE-20358](https://issues.apache.org/jira/browse/HBASE-20358) | Fix bin/hbase thrift usage text | Minor | . | +| [HBASE-20382](https://issues.apache.org/jira/browse/HBASE-20382) | If RSGroups not enabled, rsgroup.jsp prints stack trace | Major | rsgroup, UI | +| [HBASE-20385](https://issues.apache.org/jira/browse/HBASE-20385) | Purge md5-making from our little make\_rc.sh script | Minor | . | +| [HBASE-20384](https://issues.apache.org/jira/browse/HBASE-20384) | [AMv2] Logging format improvements; use encoded name rather than full region name marking transitions | Minor | . | +| [HBASE-20182](https://issues.apache.org/jira/browse/HBASE-20182) | Can not locate region after split and merge | Blocker | Region Assignment | +| [HBASE-20363](https://issues.apache.org/jira/browse/HBASE-20363) | TestNamespaceAuditor.testRegionMerge is flaky | Major | test | +| [HBASE-20362](https://issues.apache.org/jira/browse/HBASE-20362) | TestMasterShutdown.testMasterShutdownBeforeStartingAnyRegionServer is flaky | Major | test | +| [HBASE-20295](https://issues.apache.org/jira/browse/HBASE-20295) | TableOutputFormat.checkOutputSpecs throw NullPointerException Exception | Major | mapreduce | +| [HBASE-20343](https://issues.apache.org/jira/browse/HBASE-20343) | [DOC] fix log directory paths | Critical | documentation | +| [HBASE-16499](https://issues.apache.org/jira/browse/HBASE-16499) | slow replication for small HBase clusters | Critical | Replication | +| [HBASE-17518](https://issues.apache.org/jira/browse/HBASE-17518) | HBase Reference Guide has a syntax error | Minor | documentation | +| [HBASE-20231](https://issues.apache.org/jira/browse/HBASE-20231) | Not able to delete column family from a row using RemoteHTable | Major | REST | +| [HBASE-20259](https://issues.apache.org/jira/browse/HBASE-20259) | Doc configs for in-memory-compaction and add detail to in-memory-compaction logging | Critical | . | +| [HBASE-17631](https://issues.apache.org/jira/browse/HBASE-17631) | Canary interval too low | Major | canary | +| [HBASE-20282](https://issues.apache.org/jira/browse/HBASE-20282) | Provide short name invocations for useful tools | Major | documentation, tooling | +| [HBASE-20314](https://issues.apache.org/jira/browse/HBASE-20314) | Precommit build for master branch fails because of surefire fork fails | Major | build | +| [HBASE-20261](https://issues.apache.org/jira/browse/HBASE-20261) | Table page (table.jsp) in Master UI does not show replicaIds for hbase meta table | Minor | UI | +| [HBASE-20229](https://issues.apache.org/jira/browse/HBASE-20229) | ConnectionImplementation.locateRegions() returns duplicated entries when region replication is on | Major | . | +| [HBASE-20308](https://issues.apache.org/jira/browse/HBASE-20308) | test Dockerfile needs to include git | Blocker | build, test | +| [HBASE-20130](https://issues.apache.org/jira/browse/HBASE-20130) | Use defaults (16020 & 16030) as base ports when the RS is bound to localhost | Critical | documentation | +| [HBASE-20111](https://issues.apache.org/jira/browse/HBASE-20111) | Able to split region explicitly even on shouldSplit return false from split policy | Critical | . | +| [HBASE-20292](https://issues.apache.org/jira/browse/HBASE-20292) | Wrong URLs in the descriptions for update\_all\_config and update\_config commands in shell | Trivial | shell | +| [HBASE-13300](https://issues.apache.org/jira/browse/HBASE-13300) | Fix casing in getTimeStamp() and setTimestamp() for Mutations | Critical | API | +| [HBASE-20237](https://issues.apache.org/jira/browse/HBASE-20237) | Put back getClosestRowBefore and throw UnknownProtocolException instead... for asynchbase client | Critical | compatibility, Operability | +| [HBASE-20090](https://issues.apache.org/jira/browse/HBASE-20090) | Properly handle Preconditions check failure in MemStoreFlusher$FlushHandler.run | Major | . | +| [HBASE-19639](https://issues.apache.org/jira/browse/HBASE-19639) | ITBLL can't go big because RegionTooBusyException... Above memstore limit | Blocker | . | +| [HBASE-20213](https://issues.apache.org/jira/browse/HBASE-20213) | [LOGGING] Aligning formatting and logging less (compactions, in-memory compactions) | Major | logging | +| [HBASE-20141](https://issues.apache.org/jira/browse/HBASE-20141) | Fix TooManyFiles exception when RefreshingChannels in FileIOEngine | Major | BucketCache | +| [HBASE-18216](https://issues.apache.org/jira/browse/HBASE-18216) | [AMv2] Workaround for HBASE-18152, corrupt procedure WAL | Major | proc-v2 | +| [HBASE-20200](https://issues.apache.org/jira/browse/HBASE-20200) | list\_procedures fails in shell | Major | shell | +| [HBASE-20185](https://issues.apache.org/jira/browse/HBASE-20185) | Fix ACL check for MasterRpcServices#execProcedure | Major | . | +| [HBASE-20146](https://issues.apache.org/jira/browse/HBASE-20146) | Regions are stuck while opening when WAL is disabled | Critical | wal | +| [HBASE-20187](https://issues.apache.org/jira/browse/HBASE-20187) | Shell startup fails with IncompatibleClassChangeError | Blocker | shell | +| [HBASE-20189](https://issues.apache.org/jira/browse/HBASE-20189) | Typo in Required Java Version error message while building HBase. | Trivial | build | +| [HBASE-20078](https://issues.apache.org/jira/browse/HBASE-20078) | MultiByteBuff : bug in reading primitives when individual buffers are too small | Major | . | +| [HBASE-19075](https://issues.apache.org/jira/browse/HBASE-19075) | Task tabs on master UI cause page scroll | Major | master | +| [HBASE-20104](https://issues.apache.org/jira/browse/HBASE-20104) | Fix infinite loop of RIT when creating table on a rsgroup that has no online servers | Major | rsgroup | +| [HBASE-19802](https://issues.apache.org/jira/browse/HBASE-19802) | Wrong usage messages on shell commands (grant/revoke namespace syntax) | Minor | shell | +| [HBASE-20153](https://issues.apache.org/jira/browse/HBASE-20153) | enable error-prone analysis in precommit | Major | community | +| [HBASE-20024](https://issues.apache.org/jira/browse/HBASE-20024) | TestMergeTableRegionsProcedure is STILL flakey | Major | . | +| [HBASE-19598](https://issues.apache.org/jira/browse/HBASE-19598) | Fix TestAssignmentManagerMetrics flaky test | Major | test | +| [HBASE-20162](https://issues.apache.org/jira/browse/HBASE-20162) | [nightly] depending on pipeline execution we sometimes refer to the wrong workspace | Critical | test | +| [HBASE-20164](https://issues.apache.org/jira/browse/HBASE-20164) | failed hadoopcheck should add footer link | Major | community | +| [HBASE-20160](https://issues.apache.org/jira/browse/HBASE-20160) | TestRestartCluster.testRetainAssignmentOnRestart uses the wrong condition to decide whether the assignment is finished | Major | Region Assignment | +| [HBASE-20114](https://issues.apache.org/jira/browse/HBASE-20114) | Fix IllegalFormatConversionException in rsgroup.jsp | Major | UI | +| [HBASE-20144](https://issues.apache.org/jira/browse/HBASE-20144) | The shutdown of master will hang if there are no live region server | Major | Recovery | +| [HBASE-19987](https://issues.apache.org/jira/browse/HBASE-19987) | update error-prone to 2.2.0 | Major | . | +| [HBASE-20108](https://issues.apache.org/jira/browse/HBASE-20108) | \`hbase zkcli\` falls into a non-interactive prompt after HBASE-15199 | Critical | Usability | +| [HBASE-19814](https://issues.apache.org/jira/browse/HBASE-19814) | Release hbase-2.0.0-beta-2; "rolling upgrade" release | Blocker | . | +| [HBASE-20134](https://issues.apache.org/jira/browse/HBASE-20134) | support scripts use hard-coded /tmp | Minor | website | +| [HBASE-20070](https://issues.apache.org/jira/browse/HBASE-20070) | website generation is failing | Blocker | website | +| [HBASE-19147](https://issues.apache.org/jira/browse/HBASE-19147) | All branch-2 unit tests pass | Blocker | test | +| [HBASE-20110](https://issues.apache.org/jira/browse/HBASE-20110) | Findbugs in zk and mr caused nightly #409 branch-2 to fail | Major | findbugs | +| [HBASE-19656](https://issues.apache.org/jira/browse/HBASE-19656) | Disable TestAssignmentManagerMetrics for beta-1 | Major | . | +| [HBASE-19863](https://issues.apache.org/jira/browse/HBASE-19863) | java.lang.IllegalStateException: isDelete failed when SingleColumnValueFilter is used | Major | Filters | +| [HBASE-20106](https://issues.apache.org/jira/browse/HBASE-20106) | API Compliance checker should fall back to specifying origin as remote repo | Major | API, community | +| [HBASE-20066](https://issues.apache.org/jira/browse/HBASE-20066) | Region sequence id may go backward after split or merge | Critical | . | +| [HBASE-20086](https://issues.apache.org/jira/browse/HBASE-20086) | PE randomSeekScan fails with ClassNotFoundException | Major | . | +| [HBASE-20074](https://issues.apache.org/jira/browse/HBASE-20074) | [FindBugs] Same code on both branches in CompactingMemStore#initMemStoreCompactor | Major | findbugs | +| [HBASE-19974](https://issues.apache.org/jira/browse/HBASE-19974) | Fix decommissioned servers cannot be removed by remove\_servers\_rsgroup methods | Major | rsgroup | +| [HBASE-20043](https://issues.apache.org/jira/browse/HBASE-20043) | ITBLL fails against hadoop3 | Major | integration tests | +| [HBASE-19583](https://issues.apache.org/jira/browse/HBASE-19583) | update RM list to remove EOM versions | Minor | community, documentation | +| [HBASE-19728](https://issues.apache.org/jira/browse/HBASE-19728) | Add lock to filesCompacting in all place. | Major | . | +| [HBASE-20061](https://issues.apache.org/jira/browse/HBASE-20061) | HStore synchronized member variable filesCompacting should be private | Major | regionserver | +| [HBASE-20062](https://issues.apache.org/jira/browse/HBASE-20062) | findbugs is not running on precommit checks | Blocker | community, test | +| [HBASE-20054](https://issues.apache.org/jira/browse/HBASE-20054) | Forward port HBASE-18282 ReplicationLogCleaner can delete WALs not yet replicated in case of KeeperException | Major | . | +| [HBASE-20049](https://issues.apache.org/jira/browse/HBASE-20049) | Region replicas of SPLIT and MERGED regions are kept in in-memory states until restarting master | Major | read replicas | +| [HBASE-19767](https://issues.apache.org/jira/browse/HBASE-19767) | Master web UI shows negative values for Remaining KVs | Major | . | +| [HBASE-19391](https://issues.apache.org/jira/browse/HBASE-19391) | Calling HRegion#initializeRegionInternals from a region replica can still re-create a region directory | Major | . | +| [HBASE-19166](https://issues.apache.org/jira/browse/HBASE-19166) | AsyncProtobufLogWriter persists ProtobufLogWriter as class name for backward compatibility | Blocker | wal | +| [HBASE-20027](https://issues.apache.org/jira/browse/HBASE-20027) | Add test TestClusterPortAssignment | Major | . | +| [HBASE-19953](https://issues.apache.org/jira/browse/HBASE-19953) | Avoid calling post\* hook when procedure fails | Critical | master, proc-v2 | +| [HBASE-20037](https://issues.apache.org/jira/browse/HBASE-20037) | Race when calling SequenceIdAccounting.resetHighest | Blocker | wal | +| [HBASE-19991](https://issues.apache.org/jira/browse/HBASE-19991) | lots of hbase-rest test failures against hadoop 3 | Major | REST, test | +| [HBASE-19920](https://issues.apache.org/jira/browse/HBASE-19920) | TokenUtil.obtainToken unnecessarily creates a local directory | Major | . | +| [HBASE-20017](https://issues.apache.org/jira/browse/HBASE-20017) | BufferedMutatorImpl submit the same mutation repeatedly | Blocker | Client | +| [HBASE-20032](https://issues.apache.org/jira/browse/HBASE-20032) | Receving multiple warnings for missing reporting.plugins.plugin.version | Minor | hbase | +| [HBASE-19954](https://issues.apache.org/jira/browse/HBASE-19954) | Separate TestBlockReorder into individual tests to avoid ShutdownHook suppression error against hadoop3 | Major | . | +| [HBASE-20023](https://issues.apache.org/jira/browse/HBASE-20023) | CompactionTool command line examples are incorrect | Trivial | hbase | +| [HBASE-14897](https://issues.apache.org/jira/browse/HBASE-14897) | TestTableLockManager.testReapAllTableLocks is flakey | Major | . | +| [HBASE-20020](https://issues.apache.org/jira/browse/HBASE-20020) | Make sure we throw DoNotRetryIOException when ConnectionImplementation is closed | Critical | Client | +| [HBASE-19980](https://issues.apache.org/jira/browse/HBASE-19980) | NullPointerException when restoring a snapshot after splitting a region | Major | snapshots | +| [HBASE-19998](https://issues.apache.org/jira/browse/HBASE-19998) | Flakey TestVisibilityLabelsWithDefaultVisLabelService | Major | flakey, test | +| [HBASE-19996](https://issues.apache.org/jira/browse/HBASE-19996) | Some nonce procs might not be cleaned up (follow up HBASE-19756) | Major | . | +| [HBASE-18282](https://issues.apache.org/jira/browse/HBASE-18282) | ReplicationLogCleaner can delete WALs not yet replicated in case of a KeeperException | Critical | Replication | +| [HBASE-19979](https://issues.apache.org/jira/browse/HBASE-19979) | ReplicationSyncUp tool may leak Zookeeper connection | Major | Replication | +| [HBASE-19876](https://issues.apache.org/jira/browse/HBASE-19876) | The exception happening in converting pb mutation to hbase.mutation messes up the CellScanner | Critical | . | +| [HBASE-19977](https://issues.apache.org/jira/browse/HBASE-19977) | FileMmapEngine allocation of byte buffers should be synchronized | Major | . | +| [HBASE-19986](https://issues.apache.org/jira/browse/HBASE-19986) | If HBaseTestClassRule timesout a test, thread dump. | Major | . | +| [HBASE-19968](https://issues.apache.org/jira/browse/HBASE-19968) | MapReduce test fails with NoClassDefFoundError against hadoop3 | Major | . | +| [HBASE-16060](https://issues.apache.org/jira/browse/HBASE-16060) | 1.x clients cannot access table state talking to 2.0 cluster | Blocker | . | +| [HBASE-19972](https://issues.apache.org/jira/browse/HBASE-19972) | Should rethrow the RetriesExhaustedWithDetailsException when failed to apply the batch in ReplicationSink | Critical | Replication | +| [HBASE-19964](https://issues.apache.org/jira/browse/HBASE-19964) | TestWriteHeavyIncrementObserver fails | Major | test | +| [HBASE-19966](https://issues.apache.org/jira/browse/HBASE-19966) | The WriteEntry for WALKey maybe null if we failed to call WAL.append | Major | wal | +| [HBASE-19937](https://issues.apache.org/jira/browse/HBASE-19937) | Ensure createRSGroupTable be called after ProcedureExecutor and LoadBalancer are initialized | Major | rsgroup | +| [HBASE-19929](https://issues.apache.org/jira/browse/HBASE-19929) | Call RS.stop on a session expired RS may hang | Major | wal | +| [HBASE-19900](https://issues.apache.org/jira/browse/HBASE-19900) | Region-level exception destroy the result of batch | Critical | . | +| [HBASE-19941](https://issues.apache.org/jira/browse/HBASE-19941) | Flaky TestCreateTableProcedure times out in nightly, needs to LargeTests | Major | test | +| [HBASE-19934](https://issues.apache.org/jira/browse/HBASE-19934) | HBaseSnapshotException when read replicas is enabled and online snapshot is taken after region splitting | Major | snapshots | +| [HBASE-19939](https://issues.apache.org/jira/browse/HBASE-19939) | TestSplitTableRegionProcedure#testSplitWithoutPONR() and testRecoveryAndDoubleExecution() are failing with NPE | Major | amv2 | +| [HBASE-19907](https://issues.apache.org/jira/browse/HBASE-19907) | TestMetaWithReplicas still flakey | Major | . | +| [HBASE-19907](https://issues.apache.org/jira/browse/HBASE-19907) | TestMetaWithReplicas still flakey | Major | . | +| [HBASE-19926](https://issues.apache.org/jira/browse/HBASE-19926) | Use a separated class to implement the WALActionListener for Replication | Major | Replication, wal | +| [HBASE-19703](https://issues.apache.org/jira/browse/HBASE-19703) | Functionality added as part of HBASE-12583 is not working after moving the split code to master | Major | . | +| [HBASE-19658](https://issues.apache.org/jira/browse/HBASE-19658) | Fix and reenable TestCompactingToCellFlatMapMemStore#testFlatteningToJumboCellChunkMap | Major | test | +| [HBASE-19905](https://issues.apache.org/jira/browse/HBASE-19905) | ReplicationSyncUp tool will not exit if a peer replication is disabled | Major | Replication | +| [HBASE-19726](https://issues.apache.org/jira/browse/HBASE-19726) | Failed to start HMaster due to infinite retrying on meta assign | Major | . | +| [HBASE-19919](https://issues.apache.org/jira/browse/HBASE-19919) | Tidying up logging | Major | . | +| [HBASE-19901](https://issues.apache.org/jira/browse/HBASE-19901) | Up yetus proclimit on nightlies | Major | . | +| [HBASE-19884](https://issues.apache.org/jira/browse/HBASE-19884) | BucketEntryGroup's equals, hashCode and compareTo methods are not consistent | Major | . | +| [HBASE-19906](https://issues.apache.org/jira/browse/HBASE-19906) | TestZooKeeper Timeout | Major | . | +| [HBASE-19892](https://issues.apache.org/jira/browse/HBASE-19892) | Checking 'patch attach' and yetus 0.7.0 and move to Yetus 0.7.0 | Major | . | +| [HBASE-19871](https://issues.apache.org/jira/browse/HBASE-19871) | delete.rb should require user to provide the column | Major | shell | +| [HBASE-19818](https://issues.apache.org/jira/browse/HBASE-19818) | Scan time limit not work if the filter always filter row key | Major | . | +| [HBASE-19756](https://issues.apache.org/jira/browse/HBASE-19756) | Master NPE during completed failed proc eviction | Major | . | +| [HBASE-17079](https://issues.apache.org/jira/browse/HBASE-17079) | HBase build fails on windows, hbase-archetype-builder is reason for failure | Major | build | +| [HBASE-19853](https://issues.apache.org/jira/browse/HBASE-19853) | duplicate slf4j declaration in mapreduce pom | Minor | dependencies | +| [HBASE-19838](https://issues.apache.org/jira/browse/HBASE-19838) | Can not shutdown backup master cleanly when it has already tried to become the active master | Critical | master | +| [HBASE-19780](https://issues.apache.org/jira/browse/HBASE-19780) | Change execution phase of checkstyle plugin back to default 'verify' | Major | . | +| [HBASE-19774](https://issues.apache.org/jira/browse/HBASE-19774) | incorrect behavior of locateRegionInMeta | Major | . | +| [HBASE-17513](https://issues.apache.org/jira/browse/HBASE-17513) | Thrift Server 1 uses different QOP settings than RPC and Thrift Server 2 and can easily be misconfigured so there is no encryption when the operator expects it. | Critical | documentation, security, Thrift, Usability | +| [HBASE-19836](https://issues.apache.org/jira/browse/HBASE-19836) | Fix TestZooKeeper.testLogSplittingAfterMasterRecoveryDueToZKExpiry | Major | test | +| [HBASE-19794](https://issues.apache.org/jira/browse/HBASE-19794) | TestZooKeeper hangs | Critical | . | +| [HBASE-19828](https://issues.apache.org/jira/browse/HBASE-19828) | Flakey TestRegionsOnMasterOptions.testRegionsOnAllServers | Major | . | +| [HBASE-19829](https://issues.apache.org/jira/browse/HBASE-19829) | hadoop-minicluster pulls zookeeper:test-jar:tests 3.4.6 | Minor | . | +| [HBASE-19163](https://issues.apache.org/jira/browse/HBASE-19163) | "Maximum lock count exceeded" from region server's batch processing | Major | regionserver | +| [HBASE-19757](https://issues.apache.org/jira/browse/HBASE-19757) | System table gets stuck after enabling region server group feature in secure cluster | Critical | . | +| [HBASE-19825](https://issues.apache.org/jira/browse/HBASE-19825) | Fix hadoop3 compat test failures | Major | pom | +| [HBASE-19822](https://issues.apache.org/jira/browse/HBASE-19822) | HFileCleaner threads stick around after shutdown stuck on queue#take | Major | . | +| [HBASE-19815](https://issues.apache.org/jira/browse/HBASE-19815) | Flakey TestAssignmentManager.testAssignWithRandExec | Major | flakey, test | +| [HBASE-19821](https://issues.apache.org/jira/browse/HBASE-19821) | TestCleanerChore#testOnConfigurationChange() requires at least 4 processors to get passed | Minor | test | +| [HBASE-19806](https://issues.apache.org/jira/browse/HBASE-19806) | Lower max versions for table column family of hbase:meta | Trivial | . | +| [HBASE-19812](https://issues.apache.org/jira/browse/HBASE-19812) | TestFlushSnapshotFromClient fails because of failing region.flush | Major | . | +| [HBASE-19816](https://issues.apache.org/jira/browse/HBASE-19816) | Replication sink list is not updated on UnknownHostException | Major | Replication | +| [HBASE-19784](https://issues.apache.org/jira/browse/HBASE-19784) | stop-hbase gives unfriendly message when local hbase isn't running | Minor | scripts | +| [HBASE-19196](https://issues.apache.org/jira/browse/HBASE-19196) | Release hbase-2.0.0-beta-1; the "Finish-line" release | Blocker | . | +| [HBASE-19808](https://issues.apache.org/jira/browse/HBASE-19808) | Reenable TestMultiParallel | Major | test | +| [HBASE-19792](https://issues.apache.org/jira/browse/HBASE-19792) | TestReplicationSmallTests.testDisableEnable fails | Major | test | +| [HBASE-19797](https://issues.apache.org/jira/browse/HBASE-19797) | Operator priority leads to wrong logic in ReplicationSourceWALReader | Major | . | +| [HBASE-19732](https://issues.apache.org/jira/browse/HBASE-19732) | Replica regions does not return back the MSLAB chunks to pool | Critical | . | +| [HBASE-19768](https://issues.apache.org/jira/browse/HBASE-19768) | RegionServer startup failing when DN is dead | Critical | . | +| [HBASE-19752](https://issues.apache.org/jira/browse/HBASE-19752) | RSGroupBasedLoadBalancer#getMisplacedRegions() should handle the case where rs group cannot be determined | Major | . | +| [HBASE-11409](https://issues.apache.org/jira/browse/HBASE-11409) | Add more flexibility for input directory structure to LoadIncrementalHFiles | Major | . | +| [HBASE-19694](https://issues.apache.org/jira/browse/HBASE-19694) | The initialization order for a fresh cluster is incorrect | Critical | . | +| [HBASE-19769](https://issues.apache.org/jira/browse/HBASE-19769) | IllegalAccessError on package-private Hadoop metrics2 classes in MapReduce jobs | Critical | mapreduce, metrics | +| [HBASE-19775](https://issues.apache.org/jira/browse/HBASE-19775) | hbase shell doesn't handle the exceptions that are wrapped in java.io.UncheckedIOException | Major | shell | +| [HBASE-19771](https://issues.apache.org/jira/browse/HBASE-19771) | restore\_snapshot shell command gives wrong namespace if the namespace doesn't exist | Minor | . | +| [HBASE-19773](https://issues.apache.org/jira/browse/HBASE-19773) | Adding javadoc around getting instance of RawCellBuilder | Minor | . | +| [HBASE-19685](https://issues.apache.org/jira/browse/HBASE-19685) | Fix TestFSErrorsExposed#testFullSystemBubblesFSErrors | Major | test | +| [HBASE-19755](https://issues.apache.org/jira/browse/HBASE-19755) | Error message for non-existent namespace is inaccurate | Minor | . | +| [HBASE-19749](https://issues.apache.org/jira/browse/HBASE-19749) | Revisit logic of UserScanQueryMatcher#mergeFilterResponse method | Major | . | +| [HBASE-19740](https://issues.apache.org/jira/browse/HBASE-19740) | Repeated error message for NamespaceExistException | Minor | . | +| [HBASE-19734](https://issues.apache.org/jira/browse/HBASE-19734) | IntegrationTestReplication broken w/ separate clusters | Critical | integration tests | +| [HBASE-19729](https://issues.apache.org/jira/browse/HBASE-19729) | UserScanQueryMatcher#mergeFilterResponse should return INCLUDE\_AND\_SEEK\_NEXT\_ROW when filterResponse is INCLUDE\_AND\_SEEK\_NEXT\_ROW | Major | . | +| [HBASE-19744](https://issues.apache.org/jira/browse/HBASE-19744) | Fix flakey TestZKLeaderManager | Major | test | +| [HBASE-19717](https://issues.apache.org/jira/browse/HBASE-19717) | IntegrationTestDDLMasterFailover is using outdated values for DataBlockEncoding | Major | integration tests | +| [HBASE-19424](https://issues.apache.org/jira/browse/HBASE-19424) | Metrics servlet throws NPE | Minor | . | +| [HBASE-19712](https://issues.apache.org/jira/browse/HBASE-19712) | Fix TestSnapshotQuotaObserverChore#testSnapshotSize | Major | test | +| [HBASE-19696](https://issues.apache.org/jira/browse/HBASE-19696) | Filter returning INCLUDE\_AND\_NEXT\_COL doesn't skip remaining versions when scan has explicit columns | Critical | . | +| [HBASE-19721](https://issues.apache.org/jira/browse/HBASE-19721) | Unnecessary stubbings detected in test class: TestReversedScannerCallable | Major | test | +| [HBASE-19714](https://issues.apache.org/jira/browse/HBASE-19714) | \`status 'detailed'\` invokes nonexistent "getRegionsInTransition" method on ClusterStatus | Critical | shell | +| [HBASE-19709](https://issues.apache.org/jira/browse/HBASE-19709) | Guard against a ThreadPool size of 0 in CleanerChore | Critical | . | +| [HBASE-19383](https://issues.apache.org/jira/browse/HBASE-19383) | [1.2] java.lang.AssertionError: expected:\<2\> but was:\<1\> at org.apache.hadoop.hbase.TestChoreService.testTriggerNowFailsWhenNotScheduled(TestChoreService.java:707) | Major | test | +| [HBASE-19688](https://issues.apache.org/jira/browse/HBASE-19688) | TimeToLiveProcedureWALCleaner should extends BaseLogCleanerDelegate | Minor | . | +| [HBASE-18452](https://issues.apache.org/jira/browse/HBASE-18452) | VerifyReplication by Snapshot should cache HDFS token before submit job for kerberos env. | Major | . | +| [HBASE-19588](https://issues.apache.org/jira/browse/HBASE-19588) | Additional jar dependencies needed for mapreduce PerformanceEvaluation | Minor | test | +| [HBASE-19490](https://issues.apache.org/jira/browse/HBASE-19490) | Rare failure in TestRateLimiter | Major | test | +| [HBASE-19691](https://issues.apache.org/jira/browse/HBASE-19691) | Do not require ADMIN permission for obtaining ClusterStatus | Critical | . | +| [HBASE-19392](https://issues.apache.org/jira/browse/HBASE-19392) | TestReplicaWithCluster#testReplicaGetWithPrimaryAndMetaDown failure in master | Minor | regionserver | +| [HBASE-19654](https://issues.apache.org/jira/browse/HBASE-19654) | Remove misleading and chatty debug message in ReplicationLogCleaner | Major | . | +| [HBASE-19666](https://issues.apache.org/jira/browse/HBASE-19666) | TestDefaultCompactSelection test failed | Critical | test | +| [HBASE-19671](https://issues.apache.org/jira/browse/HBASE-19671) | Fix TestMultiParallel#testActiveThreadsCount | Minor | test | +| [HBASE-19672](https://issues.apache.org/jira/browse/HBASE-19672) | Correct comments for default values of major compaction in SortedCompactionPolicy#getNextMajorCompactTime() | Minor | . | +| [HBASE-19643](https://issues.apache.org/jira/browse/HBASE-19643) | Need to update cache location when get error in AsyncBatchRpcRetryingCaller | Major | . | +| [HBASE-19619](https://issues.apache.org/jira/browse/HBASE-19619) | Modify replication\_admin.rb to use ReplicationPeerConfigBuilder | Critical | . | +| [HBASE-19624](https://issues.apache.org/jira/browse/HBASE-19624) | TestIOFencing hangs | Major | . | +| [HBASE-19496](https://issues.apache.org/jira/browse/HBASE-19496) | Reusing the ByteBuffer in rpc layer corrupt the ServerLoad and RegionLoad | Blocker | . | +| [HBASE-19457](https://issues.apache.org/jira/browse/HBASE-19457) | Debugging flaky TestTruncateTableProcedure#testRecoveryAndDoubleExecutionPreserveSplits | Major | . | +| [HBASE-19608](https://issues.apache.org/jira/browse/HBASE-19608) | Race in MasterRpcServices.getProcedureResult | Major | proc-v2 | +| [HBASE-19593](https://issues.apache.org/jira/browse/HBASE-19593) | Possible NPE if wal is closed during waledit append. | Major | . | +| [HBASE-19589](https://issues.apache.org/jira/browse/HBASE-19589) | New regions should always be added with state CLOSED (followup of HBASE-19530) | Major | . | +| [HBASE-17248](https://issues.apache.org/jira/browse/HBASE-17248) | SimpleRegionNormalizer javadoc correction | Trivial | master | +| [HBASE-19148](https://issues.apache.org/jira/browse/HBASE-19148) | Reevaluate default values of configurations | Blocker | defaults | +| [HBASE-19578](https://issues.apache.org/jira/browse/HBASE-19578) | MasterProcWALs cleaning is incorrect | Critical | amv2 | +| [HBASE-19559](https://issues.apache.org/jira/browse/HBASE-19559) | Fix TestLogRolling.testLogRollOnDatanodeDeath | Major | test, wal | +| [HBASE-19218](https://issues.apache.org/jira/browse/HBASE-19218) | Master stuck thinking hbase:namespace is assigned after restart preventing intialization | Critical | . | +| [HBASE-19542](https://issues.apache.org/jira/browse/HBASE-19542) | fix TestSafemodeBringsDownMaster | Major | . | +| [HBASE-19563](https://issues.apache.org/jira/browse/HBASE-19563) | A few hbase-procedure classes missing @InterfaceAudience annotation | Minor | proc-v2 | +| [HBASE-19561](https://issues.apache.org/jira/browse/HBASE-19561) | maxCacheSize in CacheEvictionStats can't be accumulated repeatedly When dealing with each region | Major | . | +| [HBASE-19558](https://issues.apache.org/jira/browse/HBASE-19558) | TestRegionsOnMasterOptions hack so it works reliablly | Major | test | +| [HBASE-19555](https://issues.apache.org/jira/browse/HBASE-19555) | TestSplitTransactionOnCluster is flaky | Major | test | +| [HBASE-19532](https://issues.apache.org/jira/browse/HBASE-19532) | AssignProcedure#COMPARATOR may produce incorrect sort order | Critical | . | +| [HBASE-19549](https://issues.apache.org/jira/browse/HBASE-19549) | Change path comparison in CommonFSUtils | Major | . | +| [HBASE-19546](https://issues.apache.org/jira/browse/HBASE-19546) | TestMasterReplication.testCyclicReplication2 uses wrong assertion | Major | Replication, test | +| [HBASE-19522](https://issues.apache.org/jira/browse/HBASE-19522) | The complete order may be wrong in AsyncBufferedMutatorImpl | Major | . | +| [HBASE-19530](https://issues.apache.org/jira/browse/HBASE-19530) | New regions should always be added with state CLOSED | Major | . | +| [HBASE-19509](https://issues.apache.org/jira/browse/HBASE-19509) | RSGroupAdminEndpoint#preCreateTable triggers TableNotFoundException | Minor | . | +| [HBASE-18352](https://issues.apache.org/jira/browse/HBASE-18352) | Enable TestMasterOperationsForRegionReplicas#testCreateTableWithMultipleReplicas disabled by Proc-V2 AM in HBASE-14614 | Major | test | +| [HBASE-18838](https://issues.apache.org/jira/browse/HBASE-18838) | shaded artifacts are incorrect when built against hadoop 3 | Critical | Client | +| [HBASE-18946](https://issues.apache.org/jira/browse/HBASE-18946) | Stochastic load balancer assigns replica regions to the same RS | Major | . | +| [HBASE-19516](https://issues.apache.org/jira/browse/HBASE-19516) | IntegrationTestBulkLoad and IntegrationTestImportTsv run into 'java.lang.RuntimeException: DistributedHBaseCluster@1bb564e2 not an instance of MiniHBaseCluster' | Major | . | +| [HBASE-19513](https://issues.apache.org/jira/browse/HBASE-19513) | Fix the wrapped AsyncFSOutput implementation | Major | wal | +| [HBASE-19511](https://issues.apache.org/jira/browse/HBASE-19511) | Splits causes blocks to be cached again and so such blocks cannot be evicted from bucket cache | Critical | BucketCache | +| [HBASE-19510](https://issues.apache.org/jira/browse/HBASE-19510) | TestDistributedLogSplitting is flakey for AsyncFSWAL | Critical | Recovery, test | +| [HBASE-19287](https://issues.apache.org/jira/browse/HBASE-19287) | master hangs forever if RecoverMeta send assign meta region request to target server fail | Major | proc-v2 | +| [HBASE-19503](https://issues.apache.org/jira/browse/HBASE-19503) | Fix TestWALOpenAfterDNRollingStart for AsyncFSWAL | Major | Replication, wal | +| [HBASE-19434](https://issues.apache.org/jira/browse/HBASE-19434) | create\_namespace command for existing namespace does not throw useful error message | Minor | . | +| [HBASE-19484](https://issues.apache.org/jira/browse/HBASE-19484) | The value array written by ExtendedCell#write is out of bounds | Blocker | . | +| [HBASE-19508](https://issues.apache.org/jira/browse/HBASE-19508) | ReadOnlyConfiguration throws exception if any Configuration in current context calls addDefautlResource | Major | conf | +| [HBASE-19456](https://issues.apache.org/jira/browse/HBASE-19456) | RegionMover's region server hostname option is no longer case insensitive | Major | tooling | +| [HBASE-19495](https://issues.apache.org/jira/browse/HBASE-19495) | Fix failed ut TestShell | Major | . | +| [HBASE-19394](https://issues.apache.org/jira/browse/HBASE-19394) | Support multi-homing env for the publication of RS status with multicast (hbase.status.published) | Major | Client, master | +| [HBASE-19493](https://issues.apache.org/jira/browse/HBASE-19493) | Make TestWALMonotonicallyIncreasingSeqId also work with AsyncFSWAL | Major | test | +| [HBASE-19371](https://issues.apache.org/jira/browse/HBASE-19371) | Running WALPerformanceEvaluation against asyncfswal throws exceptions | Major | . | +| [HBASE-19134](https://issues.apache.org/jira/browse/HBASE-19134) | Make WALKey an Interface; expose Read-Only version to CPs | Major | Coprocessors, wal | +| [HBASE-19461](https://issues.apache.org/jira/browse/HBASE-19461) | TestRSGroups is broke | Major | test | +| [HBASE-19433](https://issues.apache.org/jira/browse/HBASE-19433) | ChangeSplitPolicyAction modifies an immutable HTableDescriptor | Critical | integration tests | +| [HBASE-19454](https://issues.apache.org/jira/browse/HBASE-19454) | Debugging TestDistributedLogSplitting#testThreeRSAbort | Major | . | +| [HBASE-19349](https://issues.apache.org/jira/browse/HBASE-19349) | Introduce wrong version depencency of servlet-api jar | Critical | . | +| [HBASE-19435](https://issues.apache.org/jira/browse/HBASE-19435) | Reopen Files for ClosedChannelException in BucketCache | Major | BucketCache | +| [HBASE-12444](https://issues.apache.org/jira/browse/HBASE-12444) | Total number of requests overflow because it's int | Minor | hbck, master, regionserver | +| [HBASE-19447](https://issues.apache.org/jira/browse/HBASE-19447) | INFO level logging of GetClusterStatus from HMaster is too chatty | Major | . | +| [HBASE-19417](https://issues.apache.org/jira/browse/HBASE-19417) | Remove boolean return value from postBulkLoadHFile hook | Major | . | +| [HBASE-19445](https://issues.apache.org/jira/browse/HBASE-19445) | PerformanceEvaluation NPE processing split policy option | Trivial | . | +| [HBASE-19023](https://issues.apache.org/jira/browse/HBASE-19023) | Usage for rowcounter in refguide is out of sync with code | Major | . | +| [HBASE-19422](https://issues.apache.org/jira/browse/HBASE-19422) | using hadoop-profile property leads to confusing failures | Major | . | +| [HBASE-19384](https://issues.apache.org/jira/browse/HBASE-19384) | Results returned by preAppend hook in a coprocessor are replaced with null from other coprocessor even on bypass | Critical | Coprocessors | +| [HBASE-19431](https://issues.apache.org/jira/browse/HBASE-19431) | The tag array written by IndividualBytesFieldCell#write is out of bounds | Critical | . | +| [HBASE-18942](https://issues.apache.org/jira/browse/HBASE-18942) | hbase-hadoop2-compat module ignores hadoop-3 profile | Major | . | +| [HBASE-19056](https://issues.apache.org/jira/browse/HBASE-19056) | TestCompactionInDeadRegionServer is top of the flakies charts! | Major | test | +| [HBASE-19339](https://issues.apache.org/jira/browse/HBASE-19339) | Eager policy results in the negative size of memstore | Critical | . | +| [HBASE-16239](https://issues.apache.org/jira/browse/HBASE-16239) | Better logging for RPC related exceptions | Major | . | +| [HBASE-19396](https://issues.apache.org/jira/browse/HBASE-19396) | Fix flaky test TestHTableMultiplexerFlushCache | Minor | test | +| [HBASE-19406](https://issues.apache.org/jira/browse/HBASE-19406) | Fix CompactionRequest equals and hashCode | Major | . | +| [HBASE-19285](https://issues.apache.org/jira/browse/HBASE-19285) | Add per-table latency histograms | Critical | metrics | +| [HBASE-19390](https://issues.apache.org/jira/browse/HBASE-19390) | Revert to older version of Jetty 9.3 | Major | . | +| [HBASE-19385](https://issues.apache.org/jira/browse/HBASE-19385) | [1.3] TestReplicator failed 1.3 nightly | Major | test | +| [HBASE-19350](https://issues.apache.org/jira/browse/HBASE-19350) | TestMetaWithReplicas is flaky | Major | . | +| [HBASE-19388](https://issues.apache.org/jira/browse/HBASE-19388) | Incorrect value is being set for Compaction Pressure in RegionLoadStats object inside HRegion class | Minor | regionserver | +| [HBASE-19386](https://issues.apache.org/jira/browse/HBASE-19386) | HBase UnsafeAvailChecker returns false on Arm64 | Minor | . | +| [HBASE-19363](https://issues.apache.org/jira/browse/HBASE-19363) | Tests under TestCheckAndMutate are identical | Minor | . | +| [HBASE-19035](https://issues.apache.org/jira/browse/HBASE-19035) | Miss metrics when coprocessor use region scanner to read data | Major | . | +| [HBASE-19351](https://issues.apache.org/jira/browse/HBASE-19351) | Deprecated is missing in Table implementations | Minor | . | +| [HBASE-19355](https://issues.apache.org/jira/browse/HBASE-19355) | Missing dependency on hbase-zookeeper module causes CopyTable to fail | Major | . | +| [HBASE-19335](https://issues.apache.org/jira/browse/HBASE-19335) | Fix waitUntilAllRegionsAssigned | Major | . | +| [HBASE-19318](https://issues.apache.org/jira/browse/HBASE-19318) | MasterRpcServices#getSecurityCapabilities explicitly checks for the HBase AccessController implementation | Critical | master, security | +| [HBASE-19319](https://issues.apache.org/jira/browse/HBASE-19319) | Fix bug in synchronizing over ProcedureEvent | Major | . | +| [HBASE-19325](https://issues.apache.org/jira/browse/HBASE-19325) | Pass a list of server name to postClearDeadServers | Major | . | +| [HBASE-19337](https://issues.apache.org/jira/browse/HBASE-19337) | AsyncMetaTableAccessor may hang when call ScanController.terminate many times | Major | . | +| [HBASE-19332](https://issues.apache.org/jira/browse/HBASE-19332) | DumpReplicationQueues misreports total WAL size | Trivial | Replication | +| [HBASE-19310](https://issues.apache.org/jira/browse/HBASE-19310) | Verify IntegrationTests don't rely on Rules outside of JUnit context | Critical | integration tests | +| [HBASE-19317](https://issues.apache.org/jira/browse/HBASE-19317) | Increase "yarn.nodemanager.disk-health-checker.max-disk-utilization-per-disk-percentage" to avoid host-related failures on MiniMRCluster | Major | integration tests, test | +| [HBASE-19330](https://issues.apache.org/jira/browse/HBASE-19330) | Remove duplicated dependency from hbase-rest | Trivial | dependencies | +| [HBASE-19321](https://issues.apache.org/jira/browse/HBASE-19321) | ZKAsyncRegistry ctor would hang when zookeeper cluster is not available | Major | . | +| [HBASE-19315](https://issues.apache.org/jira/browse/HBASE-19315) | Incorrect snapshot version is used for 2.0.0-beta-1 | Minor | . | +| [HBASE-19304](https://issues.apache.org/jira/browse/HBASE-19304) | KEEP\_DELETED\_CELLS should ignore case | Blocker | regionserver | +| [HBASE-19260](https://issues.apache.org/jira/browse/HBASE-19260) | Add lock back to avoid parallel accessing meta to locate region | Major | . | +| [HBASE-19181](https://issues.apache.org/jira/browse/HBASE-19181) | LogRollBackupSubprocedure will fail if we use AsyncFSWAL instead of FSHLog | Major | backup&restore | +| [HBASE-18356](https://issues.apache.org/jira/browse/HBASE-18356) | Enable TestFavoredStochasticBalancerPickers#testPickers that was disabled by Proc-V2 AM in HBASE-14614 | Major | test | +| [HBASE-18357](https://issues.apache.org/jira/browse/HBASE-18357) | Enable disabled tests in TestHCM that were disabled by Proc-V2 AM in HBASE-14614 | Major | test | +| [HBASE-19223](https://issues.apache.org/jira/browse/HBASE-19223) | Remove references to Date Tiered compaction from branch-1.2 and branch-1.1 ref guide | Critical | Compaction, documentation | +| [HBASE-19255](https://issues.apache.org/jira/browse/HBASE-19255) | PerformanceEvaluation class not found when run PE test | Major | . | +| [HBASE-19245](https://issues.apache.org/jira/browse/HBASE-19245) | MultiTableInputFormatBase#getSplits creates a Connection per Table | Minor | mapreduce | +| [HBASE-12091](https://issues.apache.org/jira/browse/HBASE-12091) | Optionally ignore edits for dropped tables for replication. | Major | . | +| [HBASE-19210](https://issues.apache.org/jira/browse/HBASE-19210) | TestNamespacesInstanceResource fails | Major | . | +| [HBASE-19249](https://issues.apache.org/jira/browse/HBASE-19249) | test for "hbase antipatterns" should check \_count\_ of occurance rather than text of | Critical | build | +| [HBASE-19240](https://issues.apache.org/jira/browse/HBASE-19240) | Fix error-prone errors, part four? | Major | . | +| [HBASE-19215](https://issues.apache.org/jira/browse/HBASE-19215) | Incorrect exception handling on the client causes incorrect call timeouts and byte buffer allocations on the server | Major | rpc | +| [HBASE-19250](https://issues.apache.org/jira/browse/HBASE-19250) | TestClientClusterStatus is flaky | Trivial | . | +| [HBASE-19246](https://issues.apache.org/jira/browse/HBASE-19246) | Trivial fix in findHangingTests.py | Trivial | . | +| [HBASE-19244](https://issues.apache.org/jira/browse/HBASE-19244) | Fix simple typos in HBASE-15518 descriptions | Trivial | . | +| [HBASE-19089](https://issues.apache.org/jira/browse/HBASE-19089) | Fix the list of included moduleSets in src and binary tars | Major | build | +| [HBASE-19229](https://issues.apache.org/jira/browse/HBASE-19229) | Nightly script to check source artifact should not do a destructive git operation without opt-in | Critical | build | +| [HBASE-19199](https://issues.apache.org/jira/browse/HBASE-19199) | RatioBasedCompactionPolicy#shouldPerformMajorCompaction() always return true when only one file needs to compact | Major | . | +| [HBASE-19195](https://issues.apache.org/jira/browse/HBASE-19195) | More error-prone fixes | Major | . | +| [HBASE-19165](https://issues.apache.org/jira/browse/HBASE-19165) | TODO Handle stuck in transition: rit=OPENING, location=ve0538.... | Critical | migration | +| [HBASE-19184](https://issues.apache.org/jira/browse/HBASE-19184) | clean up nightly source artifact test to match expectations from switch to git-archive | Critical | build | +| [HBASE-19211](https://issues.apache.org/jira/browse/HBASE-19211) | B&R: update configuration string in BackupRestoreConstants | Minor | . | +| [HBASE-19194](https://issues.apache.org/jira/browse/HBASE-19194) | TestRSGroupsBase has some always false checks | Blocker | rsgroup, test | +| [HBASE-19088](https://issues.apache.org/jira/browse/HBASE-19088) | move\_tables\_rsgroup will throw an exception when the table is disabled | Major | rsgroup | +| [HBASE-19198](https://issues.apache.org/jira/browse/HBASE-19198) | TestIPv6NIOServerSocketChannel fails; unable to bind | Minor | test | +| [HBASE-19102](https://issues.apache.org/jira/browse/HBASE-19102) | TestZooKeeperMainServer fails with KeeperException$ConnectionLossException | Major | . | +| [HBASE-18844](https://issues.apache.org/jira/browse/HBASE-18844) | Release hbase-2.0.0-alpha-4; Theme "Coprocessor API Cleanup" | Major | . | +| [HBASE-19111](https://issues.apache.org/jira/browse/HBASE-19111) | Add missing CellUtil#isPut(Cell) methods | Critical | Client | +| [HBASE-19160](https://issues.apache.org/jira/browse/HBASE-19160) | Re-expose CellComparator | Critical | . | +| [HBASE-19185](https://issues.apache.org/jira/browse/HBASE-19185) | ClassNotFoundException: com.fasterxml.jackson.\* | Critical | mapreduce | +| [HBASE-18983](https://issues.apache.org/jira/browse/HBASE-18983) | Upgrade to latest error-prone | Major | build | +| [HBASE-19178](https://issues.apache.org/jira/browse/HBASE-19178) | table.rb use undefined method 'getType' for Cell interface | Trivial | . | +| [HBASE-19117](https://issues.apache.org/jira/browse/HBASE-19117) | Avoid NPE occurring while active master dies | Minor | . | +| [HBASE-19173](https://issues.apache.org/jira/browse/HBASE-19173) | Configure IntegrationTestRSGroup automatically for minicluster mode | Minor | rsgroup, test | +| [HBASE-19144](https://issues.apache.org/jira/browse/HBASE-19144) | [RSgroups] Retry assignments in FAILED\_OPEN state when servers (re)join the cluster | Major | rsgroup | +| [HBASE-19124](https://issues.apache.org/jira/browse/HBASE-19124) | Move HBase-Nightly source artifact creation test from JenkinsFile to a script in dev-support | Major | test | +| [HBASE-19156](https://issues.apache.org/jira/browse/HBASE-19156) | Duplicative regions\_per\_server options on LoadTestTool | Trivial | test | +| [HBASE-19118](https://issues.apache.org/jira/browse/HBASE-19118) | Use SaslUtil to set Sasl.QOP in 'Thrift' | Major | Thrift | +| [HBASE-19150](https://issues.apache.org/jira/browse/HBASE-19150) | TestSnapshotWithAcl is flaky | Minor | . | +| [HBASE-19120](https://issues.apache.org/jira/browse/HBASE-19120) | IllegalArgumentException from ZNodeClearer when master shuts down | Major | . | +| [HBASE-19065](https://issues.apache.org/jira/browse/HBASE-19065) | HRegion#bulkLoadHFiles() should wait for concurrent Region#flush() to finish | Major | . | +| [HBASE-19100](https://issues.apache.org/jira/browse/HBASE-19100) | Missing break in catch block of InterruptedException in HRegion#waitForFlushesAndCompactions | Major | . | +| [HBASE-19137](https://issues.apache.org/jira/browse/HBASE-19137) | Nightly test should make junit reports optional rather than attempt archive after reporting. | Critical | build | +| [HBASE-19135](https://issues.apache.org/jira/browse/HBASE-19135) | TestWeakObjectPool time out | Major | . | +| [HBASE-19138](https://issues.apache.org/jira/browse/HBASE-19138) | Rare failure in TestLruBlockCache | Trivial | test | +| [HBASE-19030](https://issues.apache.org/jira/browse/HBASE-19030) | nightly runs should attempt to log test results after archiving | Critical | test | +| [HBASE-19130](https://issues.apache.org/jira/browse/HBASE-19130) | Typo in HStore.initializeRegionInternals for replaying wal | Critical | Recovery | +| [HBASE-19087](https://issues.apache.org/jira/browse/HBASE-19087) | Log an Optional's value/null instead of Optional[value]/Optional.empty. | Major | . | +| [HBASE-19129](https://issues.apache.org/jira/browse/HBASE-19129) | TestChoreService is flaky (branch-1 / branch-1.4) | Trivial | . | +| [HBASE-19119](https://issues.apache.org/jira/browse/HBASE-19119) | hbase-http shouldn't have a native profile | Blocker | build | +| [HBASE-18438](https://issues.apache.org/jira/browse/HBASE-18438) | Precommit doesn't warn about unused imports | Critical | build | +| [HBASE-18922](https://issues.apache.org/jira/browse/HBASE-18922) | Fix all dead links in our HBase book | Major | documentation | +| [HBASE-19094](https://issues.apache.org/jira/browse/HBASE-19094) | NPE in RSGroupStartupWorker.waitForGroupTableOnline during master startup | Minor | . | +| [HBASE-13346](https://issues.apache.org/jira/browse/HBASE-13346) | Clean up Filter package for post 1.0 s/KeyValue/Cell/g | Critical | API, Filters | +| [HBASE-19098](https://issues.apache.org/jira/browse/HBASE-19098) | Python based compatiblity checker fails if git repo does not have a remote named 'origin' | Critical | tooling | +| [HBASE-19077](https://issues.apache.org/jira/browse/HBASE-19077) | Have Region\*CoprocessorEnvironment provide an ImmutableOnlineRegions | Critical | Coprocessors | +| [HBASE-19073](https://issues.apache.org/jira/browse/HBASE-19073) | Cleanup CoordinatedStateManager | Major | . | +| [HBASE-19054](https://issues.apache.org/jira/browse/HBASE-19054) | Switch precommit docker image to one based on maven images | Major | build, community | +| [HBASE-19018](https://issues.apache.org/jira/browse/HBASE-19018) | Use of hadoop internals that require bouncycastle should declare bouncycastle dependency | Critical | dependencies, test | +| [HBASE-19021](https://issues.apache.org/jira/browse/HBASE-19021) | Restore a few important missing logics for balancer in 2.0 | Critical | . | +| [HBASE-19066](https://issues.apache.org/jira/browse/HBASE-19066) | Correct the directory of openjdk-8 for jenkins | Major | build | +| [HBASE-16290](https://issues.apache.org/jira/browse/HBASE-16290) | Dump summary of callQueue content; can help debugging | Major | Operability | +| [HBASE-18846](https://issues.apache.org/jira/browse/HBASE-18846) | Accommodate the hbase-indexer/lily/SEP consumer deploy-type | Major | . | +| [HBASE-19072](https://issues.apache.org/jira/browse/HBASE-19072) | Missing break in catch block of InterruptedException in HRegion#waitForFlushes() | Major | . | +| [HBASE-19058](https://issues.apache.org/jira/browse/HBASE-19058) | The wget isn't installed in building docker image | Major | build | +| [HBASE-19039](https://issues.apache.org/jira/browse/HBASE-19039) | refactor shadedjars test to only run on java changes. | Major | build | +| [HBASE-19060](https://issues.apache.org/jira/browse/HBASE-19060) | "Hadoop check" test is running all the time instead of just when changes to java | Critical | build | +| [HBASE-19061](https://issues.apache.org/jira/browse/HBASE-19061) | enforcer NPE on hbase-shaded-invariants | Blocker | build | +| [HBASE-19014](https://issues.apache.org/jira/browse/HBASE-19014) | surefire fails; When writing xml report stdout/stderr ... No such file or directory | Major | . | +| [HBASE-19042](https://issues.apache.org/jira/browse/HBASE-19042) | Oracle Java 8u144 downloader broken in precommit check | Blocker | build | +| [HBASE-19020](https://issues.apache.org/jira/browse/HBASE-19020) | TestXmlParsing exception checking relies on a particular xml implementation without declaring it. | Major | dependencies, REST | +| [HBASE-19038](https://issues.apache.org/jira/browse/HBASE-19038) | precommit mvn install should run from root on patch | Major | build | +| [HBASE-19032](https://issues.apache.org/jira/browse/HBASE-19032) | Set Content-Type header for patches uploaded by submit-patch.py | Major | . | +| [HBASE-18350](https://issues.apache.org/jira/browse/HBASE-18350) | RSGroups are broken under AMv2 | Blocker | rsgroup | +| [HBASE-18990](https://issues.apache.org/jira/browse/HBASE-18990) | ServerLoad doesn't override #equals which leads to #equals in ClusterStatus always false | Trivial | . | +| [HBASE-19017](https://issues.apache.org/jira/browse/HBASE-19017) | [AMv2] EnableTableProcedure is not retaining the assignments | Major | Region Assignment | +| [HBASE-19016](https://issues.apache.org/jira/browse/HBASE-19016) | Coordinate storage policy property name for table schema and bulkload | Minor | . | +| [HBASE-18997](https://issues.apache.org/jira/browse/HBASE-18997) | Remove the redundant methods in RegionInfo | Major | . | +| [HBASE-18355](https://issues.apache.org/jira/browse/HBASE-18355) | Enable export snapshot tests that were disabled by Proc-V2 AM in HBASE-14614 | Major | test | +| [HBASE-18505](https://issues.apache.org/jira/browse/HBASE-18505) | Our build/yetus personality will run tests on individual modules and then on all (i.e. 'root'). Should do one or other | Critical | build | +| [HBASE-18998](https://issues.apache.org/jira/browse/HBASE-18998) | processor.getRowsToLock() always assumes there is some row being locked | Major | . | +| [HBASE-18992](https://issues.apache.org/jira/browse/HBASE-18992) | Comparators passed to the Memstore's flattened segments seems to be wrong | Major | . | +| [HBASE-17590](https://issues.apache.org/jira/browse/HBASE-17590) | Drop cache hint should work for StoreFile write path | Major | . | +| [HBASE-18975](https://issues.apache.org/jira/browse/HBASE-18975) | Fix backup / restore hadoop3 incompatibility | Blocker | . | +| [HBASE-18904](https://issues.apache.org/jira/browse/HBASE-18904) | Missing break in NEXT\_ROW case of FilterList#mergeReturnCodeForOrOperator() | Minor | . | +| [HBASE-18934](https://issues.apache.org/jira/browse/HBASE-18934) | precommit on branch-1 isn't supposed to run against hadoop 3 | Critical | test | +| [HBASE-18973](https://issues.apache.org/jira/browse/HBASE-18973) | clean up maven warnings about pom well-formedness for master/branch-2 | Minor | build | +| [HBASE-18958](https://issues.apache.org/jira/browse/HBASE-18958) | Remove the IS annotation from SpaceLimitingException | Trivial | . | +| [HBASE-18921](https://issues.apache.org/jira/browse/HBASE-18921) | Result.current() throws ArrayIndexOutOfBoundsException after calling advance() | Minor | . | +| [HBASE-18940](https://issues.apache.org/jira/browse/HBASE-18940) | branch-2 (and probably others) fail check of generated source artifact | Critical | build | +| [HBASE-18874](https://issues.apache.org/jira/browse/HBASE-18874) | HMaster abort message will be skipped if Throwable is passed null | Minor | . | +| [HBASE-18941](https://issues.apache.org/jira/browse/HBASE-18941) | Confusing logging error around rerun of restore on an existing table. | Minor | . | +| [HBASE-18932](https://issues.apache.org/jira/browse/HBASE-18932) | Backups masking exception in a scenario and though it fails , it shows success message. | Major | . | +| [HBASE-18606](https://issues.apache.org/jira/browse/HBASE-18606) | Tests in hbase-spark module fail with UnsatisfiedLinkError | Critical | spark, test | +| [HBASE-18928](https://issues.apache.org/jira/browse/HBASE-18928) | Backup delete command shows wrong number of deletes requested | Minor | . | +| [HBASE-18490](https://issues.apache.org/jira/browse/HBASE-18490) | Modifying a table descriptor to enable replicas does not create replica regions | Major | Region Assignment | +| [HBASE-18913](https://issues.apache.org/jira/browse/HBASE-18913) | TestShell fails because NoMethodError: undefined method parseColumn | Major | shell | +| [HBASE-18894](https://issues.apache.org/jira/browse/HBASE-18894) | null pointer exception in list\_regions in shell command | Major | . | +| [HBASE-17441](https://issues.apache.org/jira/browse/HBASE-17441) | precommit test "hadoopcheck" not properly testing Hadoop 3 profile | Blocker | build | +| [HBASE-18845](https://issues.apache.org/jira/browse/HBASE-18845) | TestReplicationSmallTests fails after HBASE-14004 | Major | Replication | +| [HBASE-18887](https://issues.apache.org/jira/browse/HBASE-18887) | After full backup passed on hdfs root and incremental failed, full backup cannot be cleaned | Major | . | +| [HBASE-18888](https://issues.apache.org/jira/browse/HBASE-18888) | StealJobQueue should call super() to init the PriorityBlockingQueue | Major | . | +| [HBASE-18885](https://issues.apache.org/jira/browse/HBASE-18885) | HFileOutputFormat2 hardcodes default FileOutputCommitter | Major | mapreduce | +| [HBASE-18880](https://issues.apache.org/jira/browse/HBASE-18880) | Failed to start rest server if the value of hbase.rest.threads.max is too small. | Critical | REST | +| [HBASE-18762](https://issues.apache.org/jira/browse/HBASE-18762) | Canary sink type cast error | Major | . | +| [HBASE-18830](https://issues.apache.org/jira/browse/HBASE-18830) | TestCanaryTool does not check Canary monitor's error code | Major | . | +| [HBASE-18876](https://issues.apache.org/jira/browse/HBASE-18876) | Backup create command fails to take queue parameter as option | Major | . | +| [HBASE-18796](https://issues.apache.org/jira/browse/HBASE-18796) | Admin#isTableAvailable returns incorrect result before daughter regions are opened | Major | . | +| [HBASE-18866](https://issues.apache.org/jira/browse/HBASE-18866) | clean up warnings about proto syntax | Minor | Protobufs | +| [HBASE-18787](https://issues.apache.org/jira/browse/HBASE-18787) | Fix the "dependencies connecting to an HBase cluster" | Minor | documentation | +| [HBASE-18853](https://issues.apache.org/jira/browse/HBASE-18853) | hbase-protocol-shaded includes protobuf (since we moved to hbase-thirdparty) | Major | thirdparty | +| [HBASE-18852](https://issues.apache.org/jira/browse/HBASE-18852) | Take down the hbasecon asia banner on home page | Major | website | +| [HBASE-18851](https://issues.apache.org/jira/browse/HBASE-18851) | LICENSE failure after HADOOP-14799 with Hadoop 3 | Critical | build | +| [HBASE-18832](https://issues.apache.org/jira/browse/HBASE-18832) | LTT fails with casting exception for HColumnDescriptor | Major | . | +| [HBASE-18803](https://issues.apache.org/jira/browse/HBASE-18803) | Mapreduce job get failed caused by NoClassDefFoundError: org/apache/commons/lang3/ArrayUtils | Major | . | +| [HBASE-18808](https://issues.apache.org/jira/browse/HBASE-18808) | Ineffective config check in BackupLogCleaner#getDeletableFiles() | Major | . | +| [HBASE-18836](https://issues.apache.org/jira/browse/HBASE-18836) | Note need for explicit javax.el and exclude from shaded artifacts | Blocker | Client | +| [HBASE-18834](https://issues.apache.org/jira/browse/HBASE-18834) | fix shellcheck warning on hbase personality | Minor | test | +| [HBASE-18831](https://issues.apache.org/jira/browse/HBASE-18831) | Add explicit dependency on javax.el | Major | dependencies | +| [HBASE-18641](https://issues.apache.org/jira/browse/HBASE-18641) | Include block content verification logic used in lruCache in bucketCache | Minor | regionserver | +| [HBASE-14004](https://issues.apache.org/jira/browse/HBASE-14004) | [Replication] Inconsistency between Memstore and WAL may result in data in remote cluster that is not in the origin | Critical | regionserver, Replication | +| [HBASE-18801](https://issues.apache.org/jira/browse/HBASE-18801) | Bulk load cleanup may falsely deem file deletion successful | Major | . | +| [HBASE-18813](https://issues.apache.org/jira/browse/HBASE-18813) | TestCanaryTool fails on branch-1 / branch-1.4 | Major | . | +| [HBASE-18818](https://issues.apache.org/jira/browse/HBASE-18818) | TestConnectionImplemenation fails | Major | test | +| [HBASE-16611](https://issues.apache.org/jira/browse/HBASE-16611) | Flakey org.apache.hadoop.hbase.client.TestReplicasClient.testCancelOfMultiGet | Major | . | +| [HBASE-18723](https://issues.apache.org/jira/browse/HBASE-18723) | [pom cleanup] Do a pass with dependency:analyze; remove unused and explicity list the dependencies we exploit | Major | pom | +| [HBASE-18789](https://issues.apache.org/jira/browse/HBASE-18789) | Displays the reporting interval of each RS on the Master page | Major | . | +| [HBASE-18771](https://issues.apache.org/jira/browse/HBASE-18771) | Incorrect StoreFileRefresh leading to split and compaction failures | Blocker | . | +| [HBASE-18791](https://issues.apache.org/jira/browse/HBASE-18791) | HBASE\_HOME/lib does not contain hbase-mapreduce-${project.version}-tests.jar | Major | . | +| [HBASE-17853](https://issues.apache.org/jira/browse/HBASE-17853) | Link to "Why does HBase care about /etc/hosts?" does not work | Trivial | documentation | +| [HBASE-18759](https://issues.apache.org/jira/browse/HBASE-18759) | Fix hbase-shaded-check-invariants failure | Blocker | Client, mapreduce | +| [HBASE-18765](https://issues.apache.org/jira/browse/HBASE-18765) | The value of balancerRan is true even though no plans are executed | Minor | rsgroup | +| [HBASE-18543](https://issues.apache.org/jira/browse/HBASE-18543) | Re-enable test master.TestMasterFailover on master | Major | amv2 | +| [HBASE-17713](https://issues.apache.org/jira/browse/HBASE-17713) | the interface '/version/cluster' with header 'Accept: application/json' return is not JSON but plain text | Minor | REST | +| [HBASE-18757](https://issues.apache.org/jira/browse/HBASE-18757) | Fix Improper bitwise & in BucketCache offset calculation | Major | BucketCache | +| [HBASE-18743](https://issues.apache.org/jira/browse/HBASE-18743) | HFiles in use by a table which has the same name and namespace with a default table cloned from snapshot may be deleted when that snapshot and default table are deleted | Critical | hbase | +| [HBASE-15497](https://issues.apache.org/jira/browse/HBASE-15497) | Incorrect javadoc for atomicity guarantee of Increment and Append | Minor | documentation | +| [HBASE-16390](https://issues.apache.org/jira/browse/HBASE-16390) | Fix documentation around setAutoFlush | Minor | documentation | +| [HBASE-18741](https://issues.apache.org/jira/browse/HBASE-18741) | Remove cancel command from backup code | Major | . | +| [HBASE-18461](https://issues.apache.org/jira/browse/HBASE-18461) | Build broken If the username contains a backslash | Minor | . | +| [HBASE-18306](https://issues.apache.org/jira/browse/HBASE-18306) | Get rid of TableDescriptor#getConfiguration | Critical | . | +| [HBASE-15947](https://issues.apache.org/jira/browse/HBASE-15947) | Classes used only for tests included in main code base | Trivial | build, test | +| [HBASE-18714](https://issues.apache.org/jira/browse/HBASE-18714) | The dropBehind and readahead don't be applied when useHBaseChecksum is enabled | Minor | . | +| [HBASE-14745](https://issues.apache.org/jira/browse/HBASE-14745) | Shade the last few dependencies in hbase-shaded-client | Blocker | Client, dependencies | +| [HBASE-18665](https://issues.apache.org/jira/browse/HBASE-18665) | ReversedScannerCallable invokes getRegionLocations incorrectly | Critical | . | +| [HBASE-18568](https://issues.apache.org/jira/browse/HBASE-18568) | Correct metric of numRegions | Critical | metrics | +| [HBASE-18369](https://issues.apache.org/jira/browse/HBASE-18369) | hbase thrift web-ui not available | Major | Thrift | +| [HBASE-18640](https://issues.apache.org/jira/browse/HBASE-18640) | Move mapreduce out of hbase-server into separate hbase-mapreduce module | Major | . | +| [HBASE-18633](https://issues.apache.org/jira/browse/HBASE-18633) | Add more info to understand the source/scenario of large batch requests exceeding threshold | Major | . | +| [HBASE-18635](https://issues.apache.org/jira/browse/HBASE-18635) | Fix asciidoc warnings | Major | . | +| [HBASE-18671](https://issues.apache.org/jira/browse/HBASE-18671) | Support Append/Increment in rest api | Major | REST | +| [HBASE-16722](https://issues.apache.org/jira/browse/HBASE-16722) | Document: Broken link in CatalogJanitor | Trivial | documentation | +| [HBASE-18679](https://issues.apache.org/jira/browse/HBASE-18679) | YARN may null Counters object and cause an NPE in ITBLL | Trivial | integration tests | +| [HBASE-18607](https://issues.apache.org/jira/browse/HBASE-18607) | fix submit-patch.py to support utf8 | Trivial | . | +| [HBASE-18287](https://issues.apache.org/jira/browse/HBASE-18287) | Remove log warning in PartitionedMobCompactor.java#getFileStatus | Minor | mob | +| [HBASE-18647](https://issues.apache.org/jira/browse/HBASE-18647) | Parameter cacheBlocks does not take effect in REST API for scan | Major | REST | +| [HBASE-18628](https://issues.apache.org/jira/browse/HBASE-18628) | ZKPermissionWatcher blocks all ZK notifications | Critical | regionserver | +| [HBASE-18614](https://issues.apache.org/jira/browse/HBASE-18614) | Setting BUCKET\_CACHE\_COMBINED\_KEY to false disables stats on RS UI | Major | regionserver | +| [HBASE-18575](https://issues.apache.org/jira/browse/HBASE-18575) | [AMv2] Enable and fix TestRestartCluster#testRetainAssignmentOnRestart on master | Critical | amv2 | +| [HBASE-18655](https://issues.apache.org/jira/browse/HBASE-18655) | TestAsyncClusterAdminApi2 failing sometimes | Major | . | +| [HBASE-18615](https://issues.apache.org/jira/browse/HBASE-18615) | hbase-rest tests fail in hbase-2.0.0-alpha2 | Blocker | test | +| [HBASE-18644](https://issues.apache.org/jira/browse/HBASE-18644) | Duplicate "compactionQueueLength" metric in Region Server metrics | Minor | metrics | +| [HBASE-16615](https://issues.apache.org/jira/browse/HBASE-16615) | Fix flaky TestScannerHeartbeatMessages | Major | Client, Scanners | +| [HBASE-18627](https://issues.apache.org/jira/browse/HBASE-18627) | Fix TestRegionServerReadRequestMetrics | Major | test | +| [HBASE-18634](https://issues.apache.org/jira/browse/HBASE-18634) | Fix client.TestClientClusterStatus | Major | test | +| [HBASE-18637](https://issues.apache.org/jira/browse/HBASE-18637) | Update the link of "Bending time in HBase" | Trivial | documentation | +| [HBASE-18471](https://issues.apache.org/jira/browse/HBASE-18471) | The DeleteFamily cell is skipped when StoreScanner seeks to next column | Critical | Deletes, hbase, scan | +| [HBASE-18572](https://issues.apache.org/jira/browse/HBASE-18572) | Delete can't remove the cells which have no visibility label | Critical | . | +| [HBASE-18617](https://issues.apache.org/jira/browse/HBASE-18617) | FuzzyRowKeyFilter should not modify the filter pairs | Minor | . | +| [HBASE-18125](https://issues.apache.org/jira/browse/HBASE-18125) | HBase shell disregards spaces at the end of a split key in a split file | Major | shell | +| [HBASE-18587](https://issues.apache.org/jira/browse/HBASE-18587) | Fix Flaky TestFileIOEngine | Major | BucketCache, test | +| [HBASE-18431](https://issues.apache.org/jira/browse/HBASE-18431) | Mitigate compatibility concerns between branch-1.3 and branch-1.4 | Blocker | . | +| [HBASE-18493](https://issues.apache.org/jira/browse/HBASE-18493) | [AMv2] On region server crash do not process system table regions through AssignmentManager.checkIfShouldMoveSystemRegionAsync() | Critical | amv2 | +| [HBASE-18598](https://issues.apache.org/jira/browse/HBASE-18598) | AsyncNonMetaRegionLocator use FIFO algorithm to get a candidate locate request | Minor | asyncclient | +| [HBASE-18437](https://issues.apache.org/jira/browse/HBASE-18437) | Revoke access permissions of a user from a table does not work as expected | Major | security | +| [HBASE-18526](https://issues.apache.org/jira/browse/HBASE-18526) | FIFOCompactionPolicy pre-check uses wrong scope | Major | master | +| [HBASE-18599](https://issues.apache.org/jira/browse/HBASE-18599) | Add missing @Deprecated annotations | Minor | . | +| [HBASE-17803](https://issues.apache.org/jira/browse/HBASE-17803) | PE always re-creates table when we specify the split policy | Minor | . | +| [HBASE-18592](https://issues.apache.org/jira/browse/HBASE-18592) | [hbase-thirdparty] Doc on new hbase-thirdparty dependency for the refguide | Major | documentation | +| [HBASE-18557](https://issues.apache.org/jira/browse/HBASE-18557) | change splitable to mergeable in MergeTableRegionsProcedure | Major | . | +| [HBASE-18025](https://issues.apache.org/jira/browse/HBASE-18025) | CatalogJanitor should collect outdated RegionStates from the AM | Major | read replicas | +| [HBASE-18551](https://issues.apache.org/jira/browse/HBASE-18551) | [AMv2] UnassignProcedure and crashed regionservers | Major | amv2 | +| [HBASE-18390](https://issues.apache.org/jira/browse/HBASE-18390) | Sleep too long when finding region location failed | Major | Client | +| [HBASE-18563](https://issues.apache.org/jira/browse/HBASE-18563) | Fix RAT License complaint about website jenkins scripts | Trivial | . | +| [HBASE-18024](https://issues.apache.org/jira/browse/HBASE-18024) | HRegion#initializeRegionInternals should not re-create .hregioninfo file when the region directory no longer exists | Major | Region Assignment, regionserver | +| [HBASE-18560](https://issues.apache.org/jira/browse/HBASE-18560) | Test master.assignment.TestAssignmentManager hangs on master and its in flaky list | Major | . | +| [HBASE-18262](https://issues.apache.org/jira/browse/HBASE-18262) | name of parameter quote need update in hbase-default.xml | Minor | . | +| [HBASE-18525](https://issues.apache.org/jira/browse/HBASE-18525) | TestAssignmentManager#testSocketTimeout fails in master branch | Major | . | +| [HBASE-18492](https://issues.apache.org/jira/browse/HBASE-18492) | [AMv2] Embed code for selecting highest versioned region server for system table regions in AssignmentManager.processAssignQueue() | Major | amv2 | +| [HBASE-18516](https://issues.apache.org/jira/browse/HBASE-18516) | [AMv2] Remove dead code in ServerManager resulted mostly from AMv2 refactoring | Major | . | +| [HBASE-18470](https://issues.apache.org/jira/browse/HBASE-18470) | Remove the redundant comma from RetriesExhaustedWithDetailsException#getDesc | Minor | Client | +| [HBASE-17056](https://issues.apache.org/jira/browse/HBASE-17056) | Remove checked in PB generated files | Critical | . | +| [HBASE-18480](https://issues.apache.org/jira/browse/HBASE-18480) | The cost of BaseLoadBalancer.cluster is changed even if the rollback is done | Major | Balancer | +| [HBASE-18491](https://issues.apache.org/jira/browse/HBASE-18491) | [AMv2] Fail UnassignProcedure if source Region Server is not online. | Critical | amv2 | +| [HBASE-18487](https://issues.apache.org/jira/browse/HBASE-18487) | Minor fixes in row lock implementation | Major | . | +| [HBASE-18475](https://issues.apache.org/jira/browse/HBASE-18475) | MasterProcedureScheduler incorrectly passes null Procedure to table locking | Major | proc-v2 | +| [HBASE-18259](https://issues.apache.org/jira/browse/HBASE-18259) | HBase book link to "beginner" issues includes resolved issues | Major | documentation | +| [HBASE-18481](https://issues.apache.org/jira/browse/HBASE-18481) | The autoFlush flag was not used in PE tool | Minor | . | +| [HBASE-18406](https://issues.apache.org/jira/browse/HBASE-18406) | In ServerCrashProcedure.java start(MasterProcedureEnv) is a no-op | Major | . | +| [HBASE-18473](https://issues.apache.org/jira/browse/HBASE-18473) | VC.listLabels() erroneously closes any connection | Major | Client | +| [HBASE-17131](https://issues.apache.org/jira/browse/HBASE-17131) | Avoid livelock caused by HRegion#processRowsWithLocks | Major | regionserver | +| [HBASE-18185](https://issues.apache.org/jira/browse/HBASE-18185) | IntegrationTestTimeBoundedRequestsWithRegionReplicas unbalanced tests fails with AssertionError | Minor | integration tests | +| [HBASE-18362](https://issues.apache.org/jira/browse/HBASE-18362) | hbck should not report split replica parent region from meta as errors | Minor | hbck | +| [HBASE-17839](https://issues.apache.org/jira/browse/HBASE-17839) | "Data Model" section: Table 1 has only 5 data rows instead 6. | Trivial | documentation | +| [HBASE-18445](https://issues.apache.org/jira/browse/HBASE-18445) | Upgrading Guava broke hadoop-3.0 profile | Blocker | build, dependencies, hadoop3 | +| [HBASE-18449](https://issues.apache.org/jira/browse/HBASE-18449) | Fix client.locking.TestEntityLocks#testHeartbeatException | Minor | test | +| [HBASE-18447](https://issues.apache.org/jira/browse/HBASE-18447) | MetricRegistryInfo#hashCode uses hashCode instead of toHashCode | Minor | . | +| [HBASE-18441](https://issues.apache.org/jira/browse/HBASE-18441) | ZookeeperWatcher#interruptedException should throw exception | Major | . | +| [HBASE-18054](https://issues.apache.org/jira/browse/HBASE-18054) | log when we add/remove failed servers in client | Major | Client, Operability | +| [HBASE-18427](https://issues.apache.org/jira/browse/HBASE-18427) | minor cleanup around AssignmentManager | Minor | amv2 | +| [HBASE-18323](https://issues.apache.org/jira/browse/HBASE-18323) | Remove multiple ACLs for the same user in kerberos | Minor | . | +| [HBASE-18354](https://issues.apache.org/jira/browse/HBASE-18354) | Fix TestMasterMetrics that were disabled by Proc-V2 AM in HBASE-14614 | Major | test | +| [HBASE-18433](https://issues.apache.org/jira/browse/HBASE-18433) | Convenience method for creating simple ColumnFamilyDescriptor | Major | Client | +| [HBASE-18430](https://issues.apache.org/jira/browse/HBASE-18430) | Typo in "contributing to documentation" page | Major | documentation | +| [HBASE-18404](https://issues.apache.org/jira/browse/HBASE-18404) | Small typo on ACID documentation page | Trivial | documentation | +| [HBASE-16993](https://issues.apache.org/jira/browse/HBASE-16993) | BucketCache throw java.io.IOException: Invalid HFile block magic when configuring hbase.bucketcache.bucket.sizes | Major | BucketCache | +| [HBASE-18337](https://issues.apache.org/jira/browse/HBASE-18337) | hbase-shaded-server brings in signed jars | Major | shading | +| [HBASE-18330](https://issues.apache.org/jira/browse/HBASE-18330) | NPE in ReplicationZKLockCleanerChore | Major | master, Replication | +| [HBASE-18393](https://issues.apache.org/jira/browse/HBASE-18393) | hbase shell non-interactive broken | Blocker | scripts, shell | +| [HBASE-17648](https://issues.apache.org/jira/browse/HBASE-17648) | HBase Table-level synchronization fails between two secured(kerberized) clusters | Critical | mapreduce, Operability, security, tooling | +| [HBASE-16090](https://issues.apache.org/jira/browse/HBASE-16090) | ResultScanner is not closed in SyncTable#finishRemainingHashRanges() | Major | mapreduce, Operability, tooling | +| [HBASE-15548](https://issues.apache.org/jira/browse/HBASE-15548) | SyncTable: sourceHashDir is supposed to be optional but won't work without | Critical | mapreduce, Operability, tooling | +| [HBASE-18377](https://issues.apache.org/jira/browse/HBASE-18377) | Error handling for FileNotFoundException should consider RemoteException in openReader() | Major | . | +| [HBASE-18260](https://issues.apache.org/jira/browse/HBASE-18260) | Address new license dependencies from hadoop3-alpha4 | Major | dependencies | +| [HBASE-18177](https://issues.apache.org/jira/browse/HBASE-18177) | FanOutOneBlockAsyncDFSOutputHelper fails to compile against Hadoop 3 | Major | wal | +| [HBASE-18358](https://issues.apache.org/jira/browse/HBASE-18358) | Backport HBASE-18099 'FlushSnapshotSubprocedure should wait for concurrent Region#flush() to finish' to branch-1.3 | Critical | snapshots | +| [HBASE-18348](https://issues.apache.org/jira/browse/HBASE-18348) | The implementation of AsyncTableRegionLocator does not follow the javadoc | Critical | asyncclient, Client | +| [HBASE-18292](https://issues.apache.org/jira/browse/HBASE-18292) | Fix flaky test hbase.master.locking.TestLockProcedure#testLocalMasterLockRecovery() | Major | . | +| [HBASE-17705](https://issues.apache.org/jira/browse/HBASE-17705) | Procedure execution must fail fast if procedure is not registered | Blocker | . | +| [HBASE-18341](https://issues.apache.org/jira/browse/HBASE-18341) | Update findHangingTests.py script to match changed consoleText of trunk build | Major | . | +| [HBASE-18335](https://issues.apache.org/jira/browse/HBASE-18335) | clean up configuration guide | Major | documentation | +| [HBASE-18329](https://issues.apache.org/jira/browse/HBASE-18329) | update links in config guide to point to java 8 references | Major | documentation | +| [HBASE-18312](https://issues.apache.org/jira/browse/HBASE-18312) | Ineffective handling of FileNotFoundException in FileLink$FileLinkInputStream.tryOpen() | Major | . | +| [HBASE-17931](https://issues.apache.org/jira/browse/HBASE-17931) | Assign system tables to servers with highest version | Blocker | Region Assignment, scan | +| [HBASE-18325](https://issues.apache.org/jira/browse/HBASE-18325) | Disable flakey TestMasterProcedureWalLease | Major | test | +| [HBASE-16120](https://issues.apache.org/jira/browse/HBASE-16120) | Add shell test for truncate\_preserve | Minor | . | +| [HBASE-18301](https://issues.apache.org/jira/browse/HBASE-18301) | Enable TestSimpleRegionNormalizerOnCluster#testRegionNormalizationMergeOnCluster that was disabled by Proc-V2 AM in HBASE-14614 | Major | test | +| [HBASE-18310](https://issues.apache.org/jira/browse/HBASE-18310) | LoadTestTool unable to write data | Major | util | +| [HBASE-18320](https://issues.apache.org/jira/browse/HBASE-18320) | Address maven-site-plugin upgrade steps | Blocker | website | +| [HBASE-18311](https://issues.apache.org/jira/browse/HBASE-18311) | clean up the quickstart guide | Major | documentation | +| [HBASE-13866](https://issues.apache.org/jira/browse/HBASE-13866) | Add endpoint coprocessor to the section hbase.coprocessor.region.classes in HBase book | Trivial | documentation | +| [HBASE-18302](https://issues.apache.org/jira/browse/HBASE-18302) | Protobuf section in the docs needs some clean up | Blocker | documentation | +| [HBASE-16192](https://issues.apache.org/jira/browse/HBASE-16192) | Fix the potential problems in TestAcidGuarantees | Major | . | +| [HBASE-17982](https://issues.apache.org/jira/browse/HBASE-17982) | Is the word "occured" should be "occurred ? | Trivial | hbase | +| [HBASE-18290](https://issues.apache.org/jira/browse/HBASE-18290) | Fix TestAddColumnFamilyProcedure and TestDeleteTableProcedure | Major | test | +| [HBASE-18278](https://issues.apache.org/jira/browse/HBASE-18278) | [AMv2] Enable and fix uni test hbase.master.procedure.TestServerCrashProcedure#testRecoveryAndDoubleExecutionOnRsWithMeta | Major | . | +| [HBASE-18244](https://issues.apache.org/jira/browse/HBASE-18244) | org.apache.hadoop.hbase.client.rsgroup.TestShellRSGroups hangs/fails | Major | test | +| [HBASE-18230](https://issues.apache.org/jira/browse/HBASE-18230) | Generated LICENSE file includes unsubstituted Velocity variables | Major | build | +| [HBASE-18274](https://issues.apache.org/jira/browse/HBASE-18274) | hbase autorestart will overwrite the gc log | Major | hbase | +| [HBASE-18265](https://issues.apache.org/jira/browse/HBASE-18265) | Correct the link unuseful in regionServer's region state UI | Trivial | UI | +| [HBASE-18263](https://issues.apache.org/jira/browse/HBASE-18263) | Resolve NPE in backup Master UI when access to procedures.jsp | Trivial | UI | +| [HBASE-18254](https://issues.apache.org/jira/browse/HBASE-18254) | ServerCrashProcedure checks and waits for meta initialized, instead should check and wait for meta loaded | Major | amv2 | +| [HBASE-18235](https://issues.apache.org/jira/browse/HBASE-18235) | LoadBalancer.BOGUS\_SERVER\_NAME should not have a bogus hostname | Major | . | +| [HBASE-18212](https://issues.apache.org/jira/browse/HBASE-18212) | In Standalone mode with local filesystem HBase logs Warning message:Failed to invoke 'unbuffer' method in class class org.apache.hadoop.fs.FSDataInputStream | Minor | Operability | +| [HBASE-17988](https://issues.apache.org/jira/browse/HBASE-17988) | get-active-master.rb and draining\_servers.rb no longer work | Critical | scripts | +| [HBASE-18180](https://issues.apache.org/jira/browse/HBASE-18180) | Possible connection leak while closing BufferedMutator in TableOutputFormat | Major | mapreduce | +| [HBASE-18227](https://issues.apache.org/jira/browse/HBASE-18227) | [AMv2] Fix test hbase.coprocessor.TestCoprocessorMetrics#testRegionObserverAfterRegionClosed | Major | amv2 | +| [HBASE-18225](https://issues.apache.org/jira/browse/HBASE-18225) | Fix findbugs regression calling toString() on an array | Trivial | . | +| [HBASE-18166](https://issues.apache.org/jira/browse/HBASE-18166) | [AMv2] We are splitting already-split files | Major | Region Assignment | +| [HBASE-18209](https://issues.apache.org/jira/browse/HBASE-18209) | Include httpclient / httpcore jars in build artifacts | Major | . | +| [HBASE-18219](https://issues.apache.org/jira/browse/HBASE-18219) | Fix typo in constant HConstants.HBASE\_CLIENT\_MEAT\_REPLICA\_SCAN\_TIMEOUT | Minor | . | +| [HBASE-18200](https://issues.apache.org/jira/browse/HBASE-18200) | Set hadoop check versions for branch-2 and branch-2.x in pre commit | Major | build | +| [HBASE-18207](https://issues.apache.org/jira/browse/HBASE-18207) | branch-2 build fails in the checkstyle phase | Major | . | +| [HBASE-18137](https://issues.apache.org/jira/browse/HBASE-18137) | Replication gets stuck for empty WALs | Critical | Replication | +| [HBASE-18199](https://issues.apache.org/jira/browse/HBASE-18199) | Race in NettyRpcConnection may cause call stuck in BufferCallBeforeInitHandler forever | Major | IPC/RPC | +| [HBASE-18192](https://issues.apache.org/jira/browse/HBASE-18192) | Replication drops recovered queues on region server shutdown | Blocker | Replication | +| [HBASE-18092](https://issues.apache.org/jira/browse/HBASE-18092) | Removing a peer does not properly clean up the ReplicationSourceManager state and metrics | Major | Replication | +| [HBASE-18193](https://issues.apache.org/jira/browse/HBASE-18193) | Master web UI presents the incorrect number of regions | Minor | . | +| [HBASE-18195](https://issues.apache.org/jira/browse/HBASE-18195) | Remove redundant single quote from start message for HMaster and HRegionServer | Minor | master, regionserver | +| [HBASE-18141](https://issues.apache.org/jira/browse/HBASE-18141) | Regionserver fails to shutdown when abort triggered in RegionScannerImpl during RPC call | Critical | regionserver, security | +| [HBASE-15302](https://issues.apache.org/jira/browse/HBASE-15302) | Reenable the other tests disabled by HBASE-14678 | Major | test | +| [HBASE-18184](https://issues.apache.org/jira/browse/HBASE-18184) | Add hbase-hadoop2-compat jar as MapReduce job dependency | Minor | mapreduce | +| [HBASE-18149](https://issues.apache.org/jira/browse/HBASE-18149) | The setting rules for table-scope attributes and family-scope attributes should keep consistent | Major | shell | +| [HBASE-18158](https://issues.apache.org/jira/browse/HBASE-18158) | Two running in-memory compaction threads may lose data | Major | . | +| [HBASE-18145](https://issues.apache.org/jira/browse/HBASE-18145) | The flush may cause the corrupt data for reading | Blocker | . | +| [HBASE-18132](https://issues.apache.org/jira/browse/HBASE-18132) | Low replication should be checked in period in case of datanode rolling upgrade | Major | . | +| [HBASE-9393](https://issues.apache.org/jira/browse/HBASE-9393) | Hbase does not closing a closed socket resulting in many CLOSE\_WAIT | Critical | . | +| [HBASE-18005](https://issues.apache.org/jira/browse/HBASE-18005) | read replica: handle the case that region server hosting both primary replica and meta region is down | Major | . | +| [HBASE-18030](https://issues.apache.org/jira/browse/HBASE-18030) | Per Cell TTL tags may get duplicated with increments/Append causing tags length overflow | Critical | hbase, regionserver | +| [HBASE-18155](https://issues.apache.org/jira/browse/HBASE-18155) | TestMasterProcedureWalLease is flakey | Major | amv2 | +| [HBASE-18111](https://issues.apache.org/jira/browse/HBASE-18111) | Replication stuck when cluster connection is closed | Major | . | +| [HBASE-18143](https://issues.apache.org/jira/browse/HBASE-18143) | [AMv2] Backoff on failed report of region transition quickly goes to astronomical time scale | Critical | Region Assignment | +| [HBASE-18129](https://issues.apache.org/jira/browse/HBASE-18129) | truncate\_preserve fails when the truncate method doesn't exists on the master | Major | shell | +| [HBASE-18122](https://issues.apache.org/jira/browse/HBASE-18122) | Scanner id should include ServerName of region server | Major | . | +| [HBASE-18027](https://issues.apache.org/jira/browse/HBASE-18027) | Replication should respect RPC size limits when batching edits | Major | Replication | +| [HBASE-18042](https://issues.apache.org/jira/browse/HBASE-18042) | Client Compatibility breaks between versions 1.2 and 1.3 | Critical | regionserver, scan | +| [HBASE-18118](https://issues.apache.org/jira/browse/HBASE-18118) | Default storage policy if not configured cannot be "NONE" | Minor | wal | +| [HBASE-16011](https://issues.apache.org/jira/browse/HBASE-16011) | TableSnapshotScanner and TableSnapshotInputFormat can produce duplicate rows | Major | snapshots | +| [HBASE-18120](https://issues.apache.org/jira/browse/HBASE-18120) | Fix TestAsyncRegionAdminApi | Major | test | +| [HBASE-18113](https://issues.apache.org/jira/browse/HBASE-18113) | Handle old client without include\_stop\_row flag when startRow equals endRow | Major | . | +| [HBASE-17997](https://issues.apache.org/jira/browse/HBASE-17997) | In dev environment, add jruby-complete jar to classpath only when jruby is needed | Major | . | +| [HBASE-18099](https://issues.apache.org/jira/browse/HBASE-18099) | FlushSnapshotSubprocedure should wait for concurrent Region#flush() to finish | Critical | snapshots | +| [HBASE-18084](https://issues.apache.org/jira/browse/HBASE-18084) | Improve CleanerChore to clean from directory which consumes more disk space | Major | . | +| [HBASE-18085](https://issues.apache.org/jira/browse/HBASE-18085) | Prevent parallel purge in ObjectPool | Major | . | +| [HBASE-18093](https://issues.apache.org/jira/browse/HBASE-18093) | Overloading the meaning of 'enabled' in Quota Manager to indicate either quota disabled or quota manager not ready is not good | Minor | master | +| [HBASE-18077](https://issues.apache.org/jira/browse/HBASE-18077) | Update JUnit license to EPL from CPL | Blocker | build, community | +| [HBASE-18069](https://issues.apache.org/jira/browse/HBASE-18069) | Fix flaky test TestReplicationAdminWithClusters#testDisableAndEnableReplication | Trivial | test | +| [HBASE-15616](https://issues.apache.org/jira/browse/HBASE-15616) | Allow null qualifier for all table operations | Major | Client | +| [HBASE-18081](https://issues.apache.org/jira/browse/HBASE-18081) | The way we process connection preamble in SimpleRpcServer is broken | Major | IPC/RPC | +| [HBASE-18035](https://issues.apache.org/jira/browse/HBASE-18035) | Meta replica does not give any primaryOperationTimeout to primary meta region | Critical | . | +| [HBASE-18071](https://issues.apache.org/jira/browse/HBASE-18071) | Fix flaky test TestStochasticLoadBalancer#testBalanceCluster | Major | Balancer | +| [HBASE-18058](https://issues.apache.org/jira/browse/HBASE-18058) | Zookeeper retry sleep time should have an upper limit | Major | . | +| [HBASE-17286](https://issues.apache.org/jira/browse/HBASE-17286) | LICENSE.txt in binary tarball contains only ASL text | Blocker | build, community | +| [HBASE-18049](https://issues.apache.org/jira/browse/HBASE-18049) | It is not necessary to re-open the region when MOB files cannot be found | Major | Scanners | +| [HBASE-18053](https://issues.apache.org/jira/browse/HBASE-18053) | AsyncTableResultScanner will hang when scan wrong column family | Major | Client | +| [HBASE-18051](https://issues.apache.org/jira/browse/HBASE-18051) | balance\_rsgroup still run when the Load Balancer is not enabled. | Major | rsgroup | +| [HBASE-17352](https://issues.apache.org/jira/browse/HBASE-17352) | Fix hbase-assembly build with bash 4 | Minor | . | +| [HBASE-18055](https://issues.apache.org/jira/browse/HBASE-18055) | Releasing L2 cache HFileBlocks before shipped() when switching from pread to stream causes result corruption | Major | regionserver, Scanners | +| [HBASE-18000](https://issues.apache.org/jira/browse/HBASE-18000) | Make sure we always return the scanner id with ScanResponse | Major | regionserver | +| [HBASE-18026](https://issues.apache.org/jira/browse/HBASE-18026) | ProtobufUtil seems to do extra array copying | Minor | . | +| [HBASE-16356](https://issues.apache.org/jira/browse/HBASE-16356) | REST API scanner: row prefix filter and custom filter parameters are mutually exclusive | Minor | REST | +| [HBASE-8758](https://issues.apache.org/jira/browse/HBASE-8758) | Error in RegionCoprocessorHost class preScanner method documentation. | Minor | Coprocessors, documentation | +| [HBASE-17471](https://issues.apache.org/jira/browse/HBASE-17471) | Region Seqid will be out of order in WAL if using mvccPreAssign | Critical | wal | +| [HBASE-17964](https://issues.apache.org/jira/browse/HBASE-17964) | ensure hbase-metrics-api is included in mapreduce job classpaths | Blocker | mapreduce | +| [HBASE-17991](https://issues.apache.org/jira/browse/HBASE-17991) | Add more details about compaction queue on /dump | Minor | . | +| [HBASE-17228](https://issues.apache.org/jira/browse/HBASE-17228) | precommit grep -c ERROR may grab non errors | Minor | build, community, test | +| [HBASE-17958](https://issues.apache.org/jira/browse/HBASE-17958) | Avoid passing unexpected cell to ScanQueryMatcher when optimize SEEK to SKIP | Major | . | +| [HBASE-17985](https://issues.apache.org/jira/browse/HBASE-17985) | Inline package manage updates with package installation in Yetus Dockerfile | Blocker | . | +| [HBASE-17957](https://issues.apache.org/jira/browse/HBASE-17957) | Custom metrics of replicate endpoints don't prepend "source." to global metrics | Minor | Replication | +| [HBASE-17862](https://issues.apache.org/jira/browse/HBASE-17862) | Condition that always returns true | Trivial | Client | +| [HBASE-14286](https://issues.apache.org/jira/browse/HBASE-14286) | Correct typo in argument name for WALSplitter.writeRegionSequenceIdFile | Trivial | . | +| [HBASE-17879](https://issues.apache.org/jira/browse/HBASE-17879) | Avoid NPE in snapshot.jsp when accessing without any request parameter | Trivial | UI | +| [HBASE-17975](https://issues.apache.org/jira/browse/HBASE-17975) | TokenUtil.obtainToken squashes remote exceptions | Blocker | mapreduce, security | +| [HBASE-17970](https://issues.apache.org/jira/browse/HBASE-17970) | Set yarn.app.mapreduce.am.staging-dir when starting MiniMRCluster | Major | mapreduce, snapshots, test | +| [HBASE-17950](https://issues.apache.org/jira/browse/HBASE-17950) | Write the chunkId also as Int instead of long into the first byte of the chunk | Major | . | +| [HBASE-17904](https://issues.apache.org/jira/browse/HBASE-17904) | Get runs into NoSuchElementException when using Read Replica, with hbase. ipc.client.specificThreadForWriting to be true and hbase.rpc.client.impl to be org.apache.hadoop.hbase.ipc.RpcClientImpl | Major | Client, IPC/RPC | +| [HBASE-17947](https://issues.apache.org/jira/browse/HBASE-17947) | Location of Examples.proto is wrong in comment of RowCountEndPoint.java | Trivial | Coprocessors | +| [HBASE-17302](https://issues.apache.org/jira/browse/HBASE-17302) | The region flush request disappeared from flushQueue | Major | . | +| [HBASE-17943](https://issues.apache.org/jira/browse/HBASE-17943) | The in-memory flush size is different for each CompactingMemStore located in the same region | Major | regionserver | +| [HBASE-17946](https://issues.apache.org/jira/browse/HBASE-17946) | Shell command compact\_rs don't work | Major | shell | +| [HBASE-17941](https://issues.apache.org/jira/browse/HBASE-17941) | CellArrayMap#getCell may throw IndexOutOfBoundsException | Minor | . | +| [HBASE-13288](https://issues.apache.org/jira/browse/HBASE-13288) | Fix naming of parameter in Delete constructor | Trivial | API | +| [HBASE-17937](https://issues.apache.org/jira/browse/HBASE-17937) | Memstore size becomes negative in case of expensive postPut/Delete Coprocessor call | Major | regionserver | +| [HBASE-17940](https://issues.apache.org/jira/browse/HBASE-17940) | HMaster can not start due to Jasper related classes conflict | Blocker | dependencies, pom | +| [HBASE-17936](https://issues.apache.org/jira/browse/HBASE-17936) | Refine sum endpoint example in ref guide | Minor | documentation | +| [HBASE-17930](https://issues.apache.org/jira/browse/HBASE-17930) | Avoid using Canary.sniff in HBaseTestingUtility | Major | canary, test | +| [HBASE-16875](https://issues.apache.org/jira/browse/HBASE-16875) | Changed try-with-resources in the docs to recommended way | Trivial | documentation | +| [HBASE-17366](https://issues.apache.org/jira/browse/HBASE-17366) | Run TestHFile#testReaderWithoutBlockCache failes | Trivial | test | +| [HBASE-15535](https://issues.apache.org/jira/browse/HBASE-15535) | Correct link to Trafodion | Minor | documentation | +| [HBASE-17903](https://issues.apache.org/jira/browse/HBASE-17903) | Corrected the alias for the link of HBASE-6580 | Trivial | documentation | +| [HBASE-17816](https://issues.apache.org/jira/browse/HBASE-17816) | HRegion#mutateRowWithLocks should update writeRequestCount metric | Major | metrics | +| [HBASE-17905](https://issues.apache.org/jira/browse/HBASE-17905) | [hbase-spark] bulkload does not work when table not exist | Major | . | +| [HBASE-17863](https://issues.apache.org/jira/browse/HBASE-17863) | Procedure V2: Proc Executor cleanup. Split FINISHED state to two states: SUCCESS and FAILED. | Major | proc-v2 | +| [HBASE-17886](https://issues.apache.org/jira/browse/HBASE-17886) | Fix compatibility of ServerSideScanMetrics | Blocker | . | +| [HBASE-17869](https://issues.apache.org/jira/browse/HBASE-17869) | UnsafeAvailChecker wrongly returns false on ppc | Minor | . | +| [HBASE-17871](https://issues.apache.org/jira/browse/HBASE-17871) | scan#setBatch(int) call leads wrong result of VerifyReplication | Minor | . | +| [HBASE-15871](https://issues.apache.org/jira/browse/HBASE-15871) | Memstore flush doesn't finish because of backwardseek() in memstore scanner. | Major | Scanners | +| [HBASE-17785](https://issues.apache.org/jira/browse/HBASE-17785) | RSGroupBasedLoadBalancer fails to assign new table regions when cloning snapshot | Major | . | +| [HBASE-17698](https://issues.apache.org/jira/browse/HBASE-17698) | ReplicationEndpoint choosing sinks | Major | Replication | +| [HBASE-16780](https://issues.apache.org/jira/browse/HBASE-16780) | Since move to protobuf3.1, Cells are limited to 64MB where previous they had no limit | Critical | Protobufs | +| [HBASE-17821](https://issues.apache.org/jira/browse/HBASE-17821) | The CompoundConfiguration#toString is wrong | Trivial | . | +| [HBASE-17660](https://issues.apache.org/jira/browse/HBASE-17660) | HFileSplitter is not being applied during full table restore | Major | . | +| [HBASE-17287](https://issues.apache.org/jira/browse/HBASE-17287) | Master becomes a zombie if filesystem object closes | Blocker | master | +| [HBASE-17807](https://issues.apache.org/jira/browse/HBASE-17807) | correct the value of zookeeper.session.timeout in hbase doc | Trivial | documentation | +| [HBASE-17798](https://issues.apache.org/jira/browse/HBASE-17798) | RpcServer.Listener.Reader can abort due to CancelledKeyException | Major | . | +| [HBASE-17812](https://issues.apache.org/jira/browse/HBASE-17812) | Remove RpcConnection from pool in AbstractRpcClient.cancelConnections | Major | Client, rpc | +| [HBASE-16014](https://issues.apache.org/jira/browse/HBASE-16014) | Get and Put constructor argument lists are divergent | Major | . | +| [HBASE-17582](https://issues.apache.org/jira/browse/HBASE-17582) | Drop page cache hint is broken | Critical | Compaction, io | +| [HBASE-16084](https://issues.apache.org/jira/browse/HBASE-16084) | Clean up the stale references in javadoc | Minor | . | +| [HBASE-17426](https://issues.apache.org/jira/browse/HBASE-17426) | Inconsistent environment variable names for enabling JMX | Major | . | +| [HBASE-17792](https://issues.apache.org/jira/browse/HBASE-17792) | Use a shared thread pool for AtomicityWriter, AtomicGetReader, AtomicScanReader's connections in TestAcidGuarantees | Minor | . | +| [HBASE-17723](https://issues.apache.org/jira/browse/HBASE-17723) | ClientAsyncPrefetchScanner may end prematurely when the size of the cache is one | Major | . | +| [HBASE-17779](https://issues.apache.org/jira/browse/HBASE-17779) | disable\_table\_replication returns misleading message and does not turn off replication | Major | Replication | +| [HBASE-17780](https://issues.apache.org/jira/browse/HBASE-17780) | BoundedByteBufferPool "At capacity" messages are not actionable | Minor | . | +| [HBASE-17501](https://issues.apache.org/jira/browse/HBASE-17501) | NullPointerException after Datanodes Decommissioned and Terminated | Minor | Filesystem Integration, Operability | +| [HBASE-17773](https://issues.apache.org/jira/browse/HBASE-17773) | VerifyReplication tool wrongly emits warning "ERROR: Invalid argument '--recomparesleep=xx'" | Trivial | . | +| [HBASE-17746](https://issues.apache.org/jira/browse/HBASE-17746) | TestSimpleRpcScheduler.testCoDelScheduling is broken | Major | integration tests | +| [HBASE-17772](https://issues.apache.org/jira/browse/HBASE-17772) | IntegrationTestRSGroup won't run | Minor | rsgroup | +| [HBASE-17712](https://issues.apache.org/jira/browse/HBASE-17712) | Remove/Simplify the logic of RegionScannerImpl.handleFileNotFound | Major | regionserver | +| [HBASE-17763](https://issues.apache.org/jira/browse/HBASE-17763) | IPCUtil.wrapException will wrap DoNotRetryIOException with IOException | Major | IPC/RPC | +| [HBASE-17736](https://issues.apache.org/jira/browse/HBASE-17736) | Some options can't be configured by the shell | Minor | . | +| [HBASE-17761](https://issues.apache.org/jira/browse/HBASE-17761) | Test TestRemoveRegionMetrics.testMoveRegion fails intermittently because of race condition | Major | Region Assignment | +| [HBASE-17760](https://issues.apache.org/jira/browse/HBASE-17760) | HDFS Balancer doc is misleading | Minor | documentation | +| [HBASE-17718](https://issues.apache.org/jira/browse/HBASE-17718) | Difference between RS's servername and its ephemeral node cause SSH stop working | Major | . | +| [HBASE-17729](https://issues.apache.org/jira/browse/HBASE-17729) | Missing shortcuts for some useful HCD options | Trivial | shell | +| [HBASE-17717](https://issues.apache.org/jira/browse/HBASE-17717) | Incorrect ZK ACL set for HBase superuser | Critical | security, Zookeeper | +| [HBASE-17460](https://issues.apache.org/jira/browse/HBASE-17460) | enable\_table\_replication can not perform cyclic replication of a table | Critical | Replication | +| [HBASE-16630](https://issues.apache.org/jira/browse/HBASE-16630) | Fragmentation in long running Bucket Cache | Critical | BucketCache | +| [HBASE-17722](https://issues.apache.org/jira/browse/HBASE-17722) | Metrics subsystem stop/start messages add a lot of useless bulk to operational logging | Trivial | metrics | +| [HBASE-17710](https://issues.apache.org/jira/browse/HBASE-17710) | HBase in standalone mode creates directories with 777 permission | Major | regionserver | +| [HBASE-17673](https://issues.apache.org/jira/browse/HBASE-17673) | Monitored RPC Handler not shown in the WebUI | Minor | . | +| [HBASE-17688](https://issues.apache.org/jira/browse/HBASE-17688) | MultiRowRangeFilter not working correctly if given same start and stop RowKey | Minor | . | +| [HBASE-17699](https://issues.apache.org/jira/browse/HBASE-17699) | Fix TestLockProcedure | Blocker | proc-v2 | +| [HBASE-17674](https://issues.apache.org/jira/browse/HBASE-17674) | Major compaction may be cancelled in CompactionChecker | Major | Compaction | +| [HBASE-17682](https://issues.apache.org/jira/browse/HBASE-17682) | Region stuck in merging\_new state indefinitely | Major | . | +| [HBASE-17069](https://issues.apache.org/jira/browse/HBASE-17069) | RegionServer writes invalid META entries for split daughters in some circumstances | Blocker | wal | +| [HBASE-17677](https://issues.apache.org/jira/browse/HBASE-17677) | ServerName parsing from directory name should be more robust to errors from guava's HostAndPort | Major | wal | +| [HBASE-13882](https://issues.apache.org/jira/browse/HBASE-13882) | Fix RegionSplitPolicy section in HBase book | Trivial | documentation | +| [HBASE-17675](https://issues.apache.org/jira/browse/HBASE-17675) | ReplicationEndpoint should choose new sinks if a SaslException occurs | Major | . | +| [HBASE-15328](https://issues.apache.org/jira/browse/HBASE-15328) | Unvalidated Redirect in HMaster | Minor | security | +| [HBASE-17661](https://issues.apache.org/jira/browse/HBASE-17661) | fix the queue length passed to FastPathBalancedQueueRpcExecutor | Minor | . | +| [HBASE-17653](https://issues.apache.org/jira/browse/HBASE-17653) | HBASE-17624 rsgroup synchronizations will (distributed) deadlock | Major | rsgroup | +| [HBASE-17658](https://issues.apache.org/jira/browse/HBASE-17658) | Fix bookkeeping error with max regions for a table | Major | Balancer | +| [HBASE-17421](https://issues.apache.org/jira/browse/HBASE-17421) | Update refguide w.r.t. MOB Sweeper | Major | documentation, mob | +| [HBASE-17649](https://issues.apache.org/jira/browse/HBASE-17649) | REST API for scan should return 410 when table is disabled | Major | . | +| [HBASE-17640](https://issues.apache.org/jira/browse/HBASE-17640) | Unittest error in TestMobCompactor with different timezone | Minor | mob | +| [HBASE-17624](https://issues.apache.org/jira/browse/HBASE-17624) | Address late review of HBASE-6721, rsgroups feature | Major | rsgroup | +| [HBASE-17639](https://issues.apache.org/jira/browse/HBASE-17639) | Do not stop server if ReplicationSourceManager's waitUntilCanBePushed throws InterruptedException | Major | Replication | +| [HBASE-17558](https://issues.apache.org/jira/browse/HBASE-17558) | ZK dumping jsp should escape html | Minor | security, UI | +| [HBASE-9702](https://issues.apache.org/jira/browse/HBASE-9702) | Change unittests that use "table" or "testtable" to use method names. | Major | test | +| [HBASE-17611](https://issues.apache.org/jira/browse/HBASE-17611) | Thrift 2 per-call latency metrics are capped at ~ 2 seconds | Major | metrics, Thrift | +| [HBASE-17603](https://issues.apache.org/jira/browse/HBASE-17603) | REST API for scan should return 404 when table does not exist | Blocker | REST, scan | +| [HBASE-17638](https://issues.apache.org/jira/browse/HBASE-17638) | Remove duplicated initialization of CacheConfig in HRegionServer | Minor | . | +| [HBASE-17622](https://issues.apache.org/jira/browse/HBASE-17622) | Add hbase-metrics package to TableMapReduceUtil | Trivial | mapreduce | +| [HBASE-17616](https://issues.apache.org/jira/browse/HBASE-17616) | Incorrect actions performed by CM | Major | . | +| [HBASE-17105](https://issues.apache.org/jira/browse/HBASE-17105) | Annotate RegionServerObserver | Major | . | +| [HBASE-17381](https://issues.apache.org/jira/browse/HBASE-17381) | ReplicationSourceWorkerThread can die due to unhandled exceptions | Major | Replication | +| [HBASE-17565](https://issues.apache.org/jira/browse/HBASE-17565) | StochasticLoadBalancer may incorrectly skip balancing due to skewed multiplier sum | Critical | . | +| [HBASE-17606](https://issues.apache.org/jira/browse/HBASE-17606) | Fix failing TestRpcControllerFactory introduced by HBASE-17508 | Major | Client, scan | +| [HBASE-17187](https://issues.apache.org/jira/browse/HBASE-17187) | DoNotRetryExceptions from coprocessors should bubble up to the application | Major | . | +| [HBASE-17578](https://issues.apache.org/jira/browse/HBASE-17578) | Thrift per-method metrics should still update in the case of exceptions | Major | Thrift | +| [HBASE-17593](https://issues.apache.org/jira/browse/HBASE-17593) | Fix build with hadoop 3 profile | Major | . | +| [HBASE-17601](https://issues.apache.org/jira/browse/HBASE-17601) | close() in TableRecordReaderImpl assumes the split has started | Minor | hadoop2 | +| [HBASE-17587](https://issues.apache.org/jira/browse/HBASE-17587) | Do not Rethrow DoNotRetryIOException as UnknownScannerException | Major | Coprocessors, regionserver, rpc | +| [HBASE-17581](https://issues.apache.org/jira/browse/HBASE-17581) | mvn clean test -PskipXXXTests does not work properly for some modules | Major | . | +| [HBASE-16621](https://issues.apache.org/jira/browse/HBASE-16621) | HBCK should have -fixHFileLinks | Major | . | +| [HBASE-17522](https://issues.apache.org/jira/browse/HBASE-17522) | RuntimeExceptions from MemoryMXBean should not take down server process | Major | regionserver | +| [HBASE-17197](https://issues.apache.org/jira/browse/HBASE-17197) | hfile does not work in 2.0 | Major | HFile | +| [HBASE-17538](https://issues.apache.org/jira/browse/HBASE-17538) | HDFS.setStoragePolicy() logs errors on local fs | Major | . | +| [HBASE-16785](https://issues.apache.org/jira/browse/HBASE-16785) | We are not running all tests | Major | build, test | +| [HBASE-17540](https://issues.apache.org/jira/browse/HBASE-17540) | Change SASL server GSSAPI callback log line from DEBUG to TRACE in RegionServer to reduce log volumes in DEBUG mode | Minor | regionserver | +| [HBASE-17271](https://issues.apache.org/jira/browse/HBASE-17271) | hbase-thrift QA tests only run one test | Major | . | +| [HBASE-17407](https://issues.apache.org/jira/browse/HBASE-17407) | Correct update of maxFlushedSeqId in HRegion | Major | wal | +| [HBASE-17489](https://issues.apache.org/jira/browse/HBASE-17489) | ClientScanner may send a next request to a RegionScanner which has been exhausted | Critical | Client, scan | +| [HBASE-17357](https://issues.apache.org/jira/browse/HBASE-17357) | PerformanceEvaluation parameters parsing triggers NPE. | Minor | Performance, test | +| [HBASE-17496](https://issues.apache.org/jira/browse/HBASE-17496) | RSGroup shell commands:get\_server\_rsgroup don't work and commands display an incorrect result size | Major | shell | +| [HBASE-17486](https://issues.apache.org/jira/browse/HBASE-17486) | Tighten the contract for batch client methods | Trivial | API | +| [HBASE-17482](https://issues.apache.org/jira/browse/HBASE-17482) | mvcc mechanism fails when using mvccPreAssign | Critical | . | +| [HBASE-17469](https://issues.apache.org/jira/browse/HBASE-17469) | Properly handle empty TableName in TablePermission#readFields and #write | Major | findbugs | +| [HBASE-17475](https://issues.apache.org/jira/browse/HBASE-17475) | Stack overflow in AsyncProcess if retry too much | Major | API, Client | +| [HBASE-17464](https://issues.apache.org/jira/browse/HBASE-17464) | Fix HBaseTestingUtility.getNewDataTestDirOnTestFS to always return a unique path | Minor | test | +| [HBASE-17450](https://issues.apache.org/jira/browse/HBASE-17450) | TablePermission#equals throws NPE after namespace support was added | Major | findbugs | +| [HBASE-17452](https://issues.apache.org/jira/browse/HBASE-17452) | Failed taking snapshot - region Manifest proto-message too large | Major | snapshots | +| [HBASE-17434](https://issues.apache.org/jira/browse/HBASE-17434) | New Synchronization Scheme for Compaction Pipeline | Major | . | +| [HBASE-17445](https://issues.apache.org/jira/browse/HBASE-17445) | Count size of serialized exceptions in checking max result size quota | Major | . | +| [HBASE-17429](https://issues.apache.org/jira/browse/HBASE-17429) | HBase bulkload cannot support HDFS viewFs | Major | . | +| [HBASE-17435](https://issues.apache.org/jira/browse/HBASE-17435) | Call to preCommitStoreFile() hook encounters SaslException in secure deployment | Major | . | +| [HBASE-17430](https://issues.apache.org/jira/browse/HBASE-17430) | dead links in ref guide to class javadocs that moved out of user APIs. | Major | documentation, website | +| [HBASE-17424](https://issues.apache.org/jira/browse/HBASE-17424) | Protect REST client against malicious XML responses. | Major | REST | +| [HBASE-17351](https://issues.apache.org/jira/browse/HBASE-17351) | Enforcer plugin fails with NullPointerException | Critical | build | +| [HBASE-17290](https://issues.apache.org/jira/browse/HBASE-17290) | Potential loss of data for replication of bulk loaded hfiles | Major | . | +| [HBASE-17390](https://issues.apache.org/jira/browse/HBASE-17390) | Online update of configuration for all servers leaves out masters | Major | . | +| [HBASE-17403](https://issues.apache.org/jira/browse/HBASE-17403) | ClientAsyncPrefetchScanner doesn’t load any data if the MaxResultSize is too small | Major | . | +| [HBASE-17387](https://issues.apache.org/jira/browse/HBASE-17387) | Reduce the overhead of exception report in RegionActionResult for multi() | Minor | . | +| [HBASE-17385](https://issues.apache.org/jira/browse/HBASE-17385) | Change usage documentation from bin/hbase to hbase in various tools | Major | . | +| [HBASE-17374](https://issues.apache.org/jira/browse/HBASE-17374) | ZKPermissionWatcher crashed when grant after region close | Critical | regionserver | +| [HBASE-17376](https://issues.apache.org/jira/browse/HBASE-17376) | ClientAsyncPrefetchScanner may fail due to too many rows | Major | . | +| [HBASE-17330](https://issues.apache.org/jira/browse/HBASE-17330) | SnapshotFileCache will always refresh the file cache | Minor | snapshots | +| [HBASE-16663](https://issues.apache.org/jira/browse/HBASE-16663) | JMX ConnectorServer stopped when unauthorized user try to stop HM/RS/cluster | Critical | metrics, security | +| [HBASE-17341](https://issues.apache.org/jira/browse/HBASE-17341) | Add a timeout during replication endpoint termination | Critical | . | +| [HBASE-17328](https://issues.apache.org/jira/browse/HBASE-17328) | Properly dispose of looped replication peers | Critical | Replication | +| [HBASE-17347](https://issues.apache.org/jira/browse/HBASE-17347) | ExportSnapshot may write snapshot info file to wrong directory when specifying target name | Minor | snapshots | +| [HBASE-17344](https://issues.apache.org/jira/browse/HBASE-17344) | The regionserver web UIs miss the coprocessors of RegionServerCoprocessorHost. | Minor | . | +| [HBASE-17333](https://issues.apache.org/jira/browse/HBASE-17333) | HBASE-17294 always ensures CompactingMemstore is default | Critical | . | +| [HBASE-17326](https://issues.apache.org/jira/browse/HBASE-17326) | Fix findbugs warning in BufferedMutatorParams | Major | . | +| [HBASE-17309](https://issues.apache.org/jira/browse/HBASE-17309) | Fix connection leaks in TestAcidGuarantees | Minor | integration tests | +| [HBASE-17297](https://issues.apache.org/jira/browse/HBASE-17297) | Single Filter in parenthesis cannot be parsed correctly | Major | Filters | +| [HBASE-17237](https://issues.apache.org/jira/browse/HBASE-17237) | Override the correct compact method in HMobStore | Major | mob | +| [HBASE-16985](https://issues.apache.org/jira/browse/HBASE-16985) | TestClusterId failed due to wrong hbase rootdir | Minor | test | +| [HBASE-15437](https://issues.apache.org/jira/browse/HBASE-15437) | Response size calculated in RPCServer for warning tooLarge responses does NOT count CellScanner payload | Major | IPC/RPC | +| [HBASE-17256](https://issues.apache.org/jira/browse/HBASE-17256) | Rpc handler monitoring will be removed when the task queue is full | Major | . | +| [HBASE-17170](https://issues.apache.org/jira/browse/HBASE-17170) | HBase is also retrying DoNotRetryIOException because of class loader differences. | Major | . | +| [HBASE-17252](https://issues.apache.org/jira/browse/HBASE-17252) | Wrong arguments for ValueAndTagRewriteCell in CellUtil | Major | . | +| [HBASE-16841](https://issues.apache.org/jira/browse/HBASE-16841) | Data loss in MOB files after cloning a snapshot and deleting that snapshot | Blocker | mob, snapshots | +| [HBASE-17118](https://issues.apache.org/jira/browse/HBASE-17118) | StoreScanner leaked in KeyValueHeap | Major | . | +| [HBASE-17231](https://issues.apache.org/jira/browse/HBASE-17231) | Region#getCellCompartor sp? | Trivial | . | +| [HBASE-16886](https://issues.apache.org/jira/browse/HBASE-16886) | hbase-client: scanner with reversed=true and small=true gets no result | Major | . | +| [HBASE-17112](https://issues.apache.org/jira/browse/HBASE-17112) | Prevent setting timestamp of delta operations the same as previous value's | Major | . | +| [HBASE-16209](https://issues.apache.org/jira/browse/HBASE-16209) | Provide an ExponentialBackOffPolicy sleep between failed region open requests | Major | . | +| [HBASE-17206](https://issues.apache.org/jira/browse/HBASE-17206) | FSHLog may roll a new writer successfully with unflushed entries | Critical | wal | +| [HBASE-17224](https://issues.apache.org/jira/browse/HBASE-17224) | There are lots of spelling errors in the HBase logging and exception messages | Trivial | Client, io, mapreduce, master, regionserver, security, wal | +| [HBASE-17192](https://issues.apache.org/jira/browse/HBASE-17192) | remove use of scala-tools.org from pom | Blocker | spark, website | +| [HBASE-17186](https://issues.apache.org/jira/browse/HBASE-17186) | MasterProcedureTestingUtility#testRecoveryAndDoubleExecution displays stale procedure state info | Minor | proc-v2, test | +| [HBASE-17072](https://issues.apache.org/jira/browse/HBASE-17072) | CPU usage starts to climb up to 90-100% when using G1GC; purge ThreadLocal usage | Critical | Performance, regionserver | +| [HBASE-17116](https://issues.apache.org/jira/browse/HBASE-17116) | [PerformanceEvaluation] Add option to configure block size | Trivial | tooling | +| [HBASE-17127](https://issues.apache.org/jira/browse/HBASE-17127) | Locate region should fail fast if underlying Connection already closed | Major | . | +| [HBASE-17144](https://issues.apache.org/jira/browse/HBASE-17144) | Possible offheap read ByteBuffers leak | Major | rpc | +| [HBASE-17160](https://issues.apache.org/jira/browse/HBASE-17160) | Undo unnecessary inter-module dependency; spark to hbase-it and hbase-it to shell | Minor | . | +| [HBASE-17171](https://issues.apache.org/jira/browse/HBASE-17171) | IntegrationTestTimeBoundedRequestsWithRegionReplicas fails with obtuse error when readers have no time to run | Minor | integration tests | +| [HBASE-17158](https://issues.apache.org/jira/browse/HBASE-17158) | Avoid deadlock caused by HRegion#doDelta | Major | . | +| [HBASE-17166](https://issues.apache.org/jira/browse/HBASE-17166) | ITBLL fails on master unable to find hbase-protocol-shaded content | Major | . | +| [HBASE-17095](https://issues.apache.org/jira/browse/HBASE-17095) | The ClientSimpleScanner keeps retrying if the hfile is corrupt or cannot found | Major | regionserver, scan | +| [HBASE-16989](https://issues.apache.org/jira/browse/HBASE-16989) | RowProcess#postBatchMutate doesn’t be executed before the mvcc transaction completion | Major | . | +| [HBASE-17058](https://issues.apache.org/jira/browse/HBASE-17058) | Lower epsilon used for jitter verification from HBASE-15324 | Major | Compaction | +| [HBASE-17082](https://issues.apache.org/jira/browse/HBASE-17082) | ForeignExceptionUtil isn’t packaged when building shaded protocol with -Pcompile-protobuf | Major | . | +| [HBASE-17091](https://issues.apache.org/jira/browse/HBASE-17091) | IntegrationTestZKAndFSPermissions failed with 'KeeperException$NoNodeException' | Major | . | +| [HBASE-17092](https://issues.apache.org/jira/browse/HBASE-17092) | Both LoadIncrementalHFiles#doBulkLoad() methods should set return value | Major | . | +| [HBASE-17044](https://issues.apache.org/jira/browse/HBASE-17044) | Fix merge failed before creating merged region leaves meta inconsistent | Critical | regionserver | +| [HBASE-17074](https://issues.apache.org/jira/browse/HBASE-17074) | PreCommit job always fails because of OOM | Critical | build | +| [HBASE-16345](https://issues.apache.org/jira/browse/HBASE-16345) | RpcRetryingCallerWithReadReplicas#call() should catch some RegionServer Exceptions | Major | Client | +| [HBASE-17062](https://issues.apache.org/jira/browse/HBASE-17062) | RegionSplitter throws ClassCastException | Minor | util | +| [HBASE-16962](https://issues.apache.org/jira/browse/HBASE-16962) | Add readPoint to preCompactScannerOpen() and preFlushScannerOpen() API | Major | . | +| [HBASE-17039](https://issues.apache.org/jira/browse/HBASE-17039) | SimpleLoadBalancer schedules large amount of invalid region moves | Major | Balancer | +| [HBASE-17020](https://issues.apache.org/jira/browse/HBASE-17020) | keylen in midkey() dont computed correctly | Major | HFile | +| [HBASE-16938](https://issues.apache.org/jira/browse/HBASE-16938) | TableCFsUpdater maybe failed due to no write permission on peerNode | Major | Replication | +| [HBASE-17052](https://issues.apache.org/jira/browse/HBASE-17052) | compile-protobuf profile does not compile protobufs in some modules anymore | Major | . | +| [HBASE-17054](https://issues.apache.org/jira/browse/HBASE-17054) | Compactor#preCreateCoprocScanner should be passed user | Major | . | +| [HBASE-16983](https://issues.apache.org/jira/browse/HBASE-16983) | TestMultiTableSnapshotInputFormat failing with Unable to create region directory: /tmp/... | Minor | test | +| [HBASE-17042](https://issues.apache.org/jira/browse/HBASE-17042) | Remove 'public' keyword from MasterObserver interface | Minor | Coprocessors | +| [HBASE-17033](https://issues.apache.org/jira/browse/HBASE-17033) | LogRoller makes a lot of allocations unnecessarily | Major | . | +| [HBASE-16992](https://issues.apache.org/jira/browse/HBASE-16992) | The usage of mutation from CP is weird. | Minor | . | +| [HBASE-17032](https://issues.apache.org/jira/browse/HBASE-17032) | CallQueueTooBigException and CallDroppedException should not be triggering PFFE | Major | Client | +| [HBASE-16960](https://issues.apache.org/jira/browse/HBASE-16960) | RegionServer hang when aborting | Critical | . | +| [HBASE-14329](https://issues.apache.org/jira/browse/HBASE-14329) | Report region in transition only ever operates on one region | Major | Region Assignment | +| [HBASE-16964](https://issues.apache.org/jira/browse/HBASE-16964) | Successfully archived files are not cleared from compacted store file list if archiving of any file fails | Blocker | regionserver | +| [HBASE-16976](https://issues.apache.org/jira/browse/HBASE-16976) | hbase-protocol-shaded module generates classes to wrong directory | Minor | build | +| [HBASE-16931](https://issues.apache.org/jira/browse/HBASE-16931) | Setting cell's seqId to zero in compaction flow might cause RS down. | Critical | regionserver | +| [HBASE-16980](https://issues.apache.org/jira/browse/HBASE-16980) | TestRowProcessorEndpoint failing consistently | Major | . | +| [HBASE-16966](https://issues.apache.org/jira/browse/HBASE-16966) | Re-enable TestSimpleRpcScheduler#testCoDelScheduling in master branch | Major | test | +| [HBASE-16974](https://issues.apache.org/jira/browse/HBASE-16974) | Update os-maven-plugin to 1.4.1.final+ for building shade file on RHEL/CentOS | Minor | . | +| [HBASE-16971](https://issues.apache.org/jira/browse/HBASE-16971) | The passed durability of Append/Increment isn't used in wal sync | Major | . | +| [HBASE-16743](https://issues.apache.org/jira/browse/HBASE-16743) | TestSimpleRpcScheduler#testCoDelScheduling is broke | Major | rpc | +| [HBASE-16948](https://issues.apache.org/jira/browse/HBASE-16948) | Fix inconsistency between HRegion and Region javadoc on getRowLock | Major | . | +| [HBASE-16949](https://issues.apache.org/jira/browse/HBASE-16949) | Fix RAT License complaint about the hbase-protocol-shaded/src/main/patches content | Major | . | +| [HBASE-16939](https://issues.apache.org/jira/browse/HBASE-16939) | ExportSnapshot: set owner and permission on right directory | Minor | . | +| [HBASE-16000](https://issues.apache.org/jira/browse/HBASE-16000) | Table#checkAndPut() docs are too vague | Minor | documentation | +| [HBASE-16880](https://issues.apache.org/jira/browse/HBASE-16880) | Correct the javadoc/behaviour of the APIs in ByteBufferUtils | Major | . | +| [HBASE-16930](https://issues.apache.org/jira/browse/HBASE-16930) | AssignmentManager#checkWals() function can recur infinitely | Major | Region Assignment | +| [HBASE-16887](https://issues.apache.org/jira/browse/HBASE-16887) | Allow setting different hadoopcheck versions in precommit for different branches | Major | build | +| [HBASE-15684](https://issues.apache.org/jira/browse/HBASE-15684) | Fix the broken log file size accounting | Major | wal | +| [HBASE-16870](https://issues.apache.org/jira/browse/HBASE-16870) | Add the metrics of replication sources which were transformed from other dead rs to ReplicationLoad | Minor | Replication | +| [HBASE-16815](https://issues.apache.org/jira/browse/HBASE-16815) | Low scan ratio in RPC queue tuning triggers divide by zero exception | Major | regionserver, rpc | +| [HBASE-16829](https://issues.apache.org/jira/browse/HBASE-16829) | DemoClient should detect secure mode | Major | . | +| [HBASE-16754](https://issues.apache.org/jira/browse/HBASE-16754) | Regions failing compaction due to referencing non-existent store file | Blocker | . | +| [HBASE-15348](https://issues.apache.org/jira/browse/HBASE-15348) | Fix tests broken by recent metrics re-work | Major | metrics, test | +| [HBASE-16910](https://issues.apache.org/jira/browse/HBASE-16910) | Avoid NPE when starting StochasticLoadBalancer | Minor | Balancer | +| [HBASE-16701](https://issues.apache.org/jira/browse/HBASE-16701) | TestHRegion and TestHRegionWithInMemoryFlush timing out | Major | regionserver, test | +| [HBASE-16889](https://issues.apache.org/jira/browse/HBASE-16889) | Proc-V2: verifyTables in the IntegrationTestDDLMasterFailover test after each table DDL is incorrect | Major | proc-v2 | +| [HBASE-16884](https://issues.apache.org/jira/browse/HBASE-16884) | Add HBase-2.0.x to the hadoop version support matrix in our documentation | Blocker | documentation | +| [HBASE-16752](https://issues.apache.org/jira/browse/HBASE-16752) | Upgrading from 1.2 to 1.3 can lead to replication failures due to difference in RPC size limit | Major | Replication, rpc | +| [HBASE-16578](https://issues.apache.org/jira/browse/HBASE-16578) | Mob data loss after mob compaction and normal compaction | Major | mob | +| [HBASE-16824](https://issues.apache.org/jira/browse/HBASE-16824) | Writer.flush() can be called on already closed streams in WAL roll | Major | wal | +| [HBASE-16866](https://issues.apache.org/jira/browse/HBASE-16866) | Avoid NPE in AsyncRequestFutureImpl#updateStats | Minor | . | +| [HBASE-16733](https://issues.apache.org/jira/browse/HBASE-16733) | add hadoop 3.0.0-alpha1 to precommit checks | Major | build, hadoop3 | +| [HBASE-16283](https://issues.apache.org/jira/browse/HBASE-16283) | Batch Append/Increment will always fail if set ReturnResults to false | Minor | API | +| [HBASE-16712](https://issues.apache.org/jira/browse/HBASE-16712) | fix hadoop-3.0 profile mvn install | Major | build, hadoop3 | +| [HBASE-16721](https://issues.apache.org/jira/browse/HBASE-16721) | Concurrency issue in WAL unflushed seqId tracking | Critical | wal | +| [HBASE-16326](https://issues.apache.org/jira/browse/HBASE-16326) | CellModel / RowModel should override 'equals', 'hashCode' and 'toString' | Trivial | REST | +| [HBASE-16855](https://issues.apache.org/jira/browse/HBASE-16855) | Avoid NPE in MetricsConnection’s construction | Minor | . | +| [HBASE-16856](https://issues.apache.org/jira/browse/HBASE-16856) | Exception message in SyncRunner.run() should print currentSequence | Minor | wal | +| [HBASE-16853](https://issues.apache.org/jira/browse/HBASE-16853) | Regions are assigned to Region Servers in /hbase/draining after HBase Master failover | Major | Balancer, Region Assignment | +| [HBASE-16810](https://issues.apache.org/jira/browse/HBASE-16810) | HBase Balancer throws ArrayIndexOutOfBoundsException when regionservers are in /hbase/draining znode and unloaded | Major | Balancer | +| [HBASE-16664](https://issues.apache.org/jira/browse/HBASE-16664) | Timeout logic in AsyncProcess is broken | Major | . | +| [HBASE-16724](https://issues.apache.org/jira/browse/HBASE-16724) | Snapshot owner can't clone | Major | snapshots | +| [HBASE-16807](https://issues.apache.org/jira/browse/HBASE-16807) | RegionServer will fail to report new active Hmaster until HMaster/RegionServer failover | Major | regionserver | +| [HBASE-16716](https://issues.apache.org/jira/browse/HBASE-16716) | OfflineMetaRepair leaves empty directory inside /hbase/WALs which remains forever | Minor | hbck | +| [HBASE-16746](https://issues.apache.org/jira/browse/HBASE-16746) | The log of “region close” should differ from “region move” | Minor | . | +| [HBASE-16808](https://issues.apache.org/jira/browse/HBASE-16808) | Included the generated, shaded java files from "HBASE-15638 Shade protobuf" in our src assembly | Blocker | . | +| [HBASE-16731](https://issues.apache.org/jira/browse/HBASE-16731) | Inconsistent results from the Get/Scan if we use the empty FilterList | Minor | . | +| [HBASE-16801](https://issues.apache.org/jira/browse/HBASE-16801) | The Append/Increment may return the data from future | Critical | . | +| [HBASE-15109](https://issues.apache.org/jira/browse/HBASE-15109) | HM/RS failed to start when "fs.hdfs.impl.disable.cache" is set to true | Critical | regionserver | +| [HBASE-16622](https://issues.apache.org/jira/browse/HBASE-16622) | Fix some issues with the HBase reference guide | Major | documentation | +| [HBASE-16793](https://issues.apache.org/jira/browse/HBASE-16793) | Exclude shaded protobuf files from rat check | Major | build | +| [HBASE-16699](https://issues.apache.org/jira/browse/HBASE-16699) | Overflows in AverageIntervalRateLimiter's refill() and getWaitInterval() | Major | . | +| [HBASE-16771](https://issues.apache.org/jira/browse/HBASE-16771) | VerifyReplication should increase GOODROWS counter if re-comparison passes | Major | . | +| [HBASE-16768](https://issues.apache.org/jira/browse/HBASE-16768) | Inconsistent results from the Append/Increment | Minor | . | +| [HBASE-16767](https://issues.apache.org/jira/browse/HBASE-16767) | Mob compaction needs to clean up files in /hbase/mobdir/.tmp and /hbase/mobdir/.tmp/.bulkload when running into IO exceptions | Major | mob | +| [HBASE-16681](https://issues.apache.org/jira/browse/HBASE-16681) | Fix flaky TestReplicationSourceManagerZkImpl | Major | . | +| [HBASE-16753](https://issues.apache.org/jira/browse/HBASE-16753) | There is a mismatch between suggested Java version in hbase-env.sh | Minor | scripts | +| [HBASE-16644](https://issues.apache.org/jira/browse/HBASE-16644) | Errors when reading legit HFile Trailer of old (v2.0) format file | Critical | HFile | +| [HBASE-16763](https://issues.apache.org/jira/browse/HBASE-16763) | Remove unintentional dependency on net.sf.ehcache.search.Results | Major | . | +| [HBASE-16764](https://issues.apache.org/jira/browse/HBASE-16764) | hbase-protocol-shaded generate-shaded-classes profile unpacks shaded java files into wrong location | Major | build | +| [HBASE-16739](https://issues.apache.org/jira/browse/HBASE-16739) | Timed out exception message should include encoded region name | Minor | . | +| [HBASE-16678](https://issues.apache.org/jira/browse/HBASE-16678) | MapReduce jobs do not update counters from ScanMetrics | Major | . | +| [HBASE-16732](https://issues.apache.org/jira/browse/HBASE-16732) | Avoid possible NPE in MetaTableLocator | Minor | . | +| [HBASE-16723](https://issues.apache.org/jira/browse/HBASE-16723) | RMI registry is not destroyed after stopping JMX Connector Server | Major | metrics | +| [HBASE-16711](https://issues.apache.org/jira/browse/HBASE-16711) | Fix hadoop-3.0 profile compile | Major | build, hadoop3 | +| [HBASE-16696](https://issues.apache.org/jira/browse/HBASE-16696) | After HBASE-16604 - does not release blocks in case of scanner exception | Critical | . | +| [HBASE-16682](https://issues.apache.org/jira/browse/HBASE-16682) | Fix Shell tests failure. NoClassDefFoundError for MiniKdc | Major | . | +| [HBASE-16660](https://issues.apache.org/jira/browse/HBASE-16660) | ArrayIndexOutOfBounds during the majorCompactionCheck in DateTieredCompaction | Critical | Compaction | +| [HBASE-16643](https://issues.apache.org/jira/browse/HBASE-16643) | Reverse scanner heap creation may not allow MSLAB closure due to improper ref counting of segments | Critical | . | +| [HBASE-16649](https://issues.apache.org/jira/browse/HBASE-16649) | Truncate table with splits preserved can cause both data loss and truncated data appeared again | Major | . | +| [HBASE-16704](https://issues.apache.org/jira/browse/HBASE-16704) | Scan will be broken while working with DBE and KeyValueCodecWithTags | Major | . | +| [HBASE-16645](https://issues.apache.org/jira/browse/HBASE-16645) | Wrong range of Cells is caused by CellFlatMap#tailMap, headMap, and SubMap | Major | . | +| [HBASE-16665](https://issues.apache.org/jira/browse/HBASE-16665) | Check whether KeyValueUtil.createXXX could be replaced by CellUtil without copy | Major | . | +| [HBASE-16697](https://issues.apache.org/jira/browse/HBASE-16697) | bump TestRegionServerMetrics to LargeTests | Trivial | test | +| [HBASE-16679](https://issues.apache.org/jira/browse/HBASE-16679) | Flush throughput controller: Minor perf change and fix flaky TestFlushWithThroughputController | Major | . | +| [HBASE-16693](https://issues.apache.org/jira/browse/HBASE-16693) | The commit of HBASE-16604 creates a unrelated folder | Critical | . | +| [HBASE-16688](https://issues.apache.org/jira/browse/HBASE-16688) | Split TestMasterFailoverWithProcedures | Major | proc-v2, test | +| [HBASE-16604](https://issues.apache.org/jira/browse/HBASE-16604) | Scanner retries on IOException can cause the scans to miss data | Critical | regionserver, Scanners | +| [HBASE-16662](https://issues.apache.org/jira/browse/HBASE-16662) | Fix open POODLE vulnerabilities | Major | REST, Thrift | +| [HBASE-16675](https://issues.apache.org/jira/browse/HBASE-16675) | Average region size may be incorrect when there is region whose RegionLoad cannot be retrieved | Major | . | +| [HBASE-16670](https://issues.apache.org/jira/browse/HBASE-16670) | Make RpcServer#processRequest logic more robust | Minor | . | +| [HBASE-12088](https://issues.apache.org/jira/browse/HBASE-12088) | Remove un-used profiles in non-root poms | Major | . | +| [HBASE-16669](https://issues.apache.org/jira/browse/HBASE-16669) | fix flaky TestAdmin#testmergeRegions | Major | test | +| [HBASE-16294](https://issues.apache.org/jira/browse/HBASE-16294) | hbck reporting "No HDFS region dir found" for replicas | Minor | hbck | +| [HBASE-12949](https://issues.apache.org/jira/browse/HBASE-12949) | Scanner can be stuck in infinite loop if the HFile is corrupted | Major | . | +| [HBASE-16654](https://issues.apache.org/jira/browse/HBASE-16654) | Better handle channelInactive and close for netty rpc client | Major | . | +| [HBASE-16540](https://issues.apache.org/jira/browse/HBASE-16540) | Scan should do additional validation on start and stop row | Major | Client | +| [HBASE-16647](https://issues.apache.org/jira/browse/HBASE-16647) | hbck should do offline reference repair before online repair | Major | . | +| [HBASE-16551](https://issues.apache.org/jira/browse/HBASE-16551) | Cleanup SplitLogManager and CatalogJanitor | Trivial | master | +| [HBASE-16635](https://issues.apache.org/jira/browse/HBASE-16635) | RpcClient under heavy load leaks some netty bytebuf | Minor | . | +| [HBASE-16165](https://issues.apache.org/jira/browse/HBASE-16165) | Decrease RpcServer.callQueueSize before writeResponse causes OOM | Minor | IPC/RPC, rpc | +| [HBASE-16624](https://issues.apache.org/jira/browse/HBASE-16624) | MVCC DeSerialization bug in the HFileScannerImpl | Blocker | HFile | +| [HBASE-16612](https://issues.apache.org/jira/browse/HBASE-16612) | Use array to cache Types for KeyValue.Type.codeToType | Minor | . | +| [HBASE-16491](https://issues.apache.org/jira/browse/HBASE-16491) | A few org.apache.hadoop.hbase.rsgroup classes missing @InterfaceAudience annotation | Minor | API, regionserver | +| [HBASE-16609](https://issues.apache.org/jira/browse/HBASE-16609) | Fake cells EmptyByteBufferedCell created in read path not implementing SettableSequenceId | Major | . | +| [HBASE-16614](https://issues.apache.org/jira/browse/HBASE-16614) | Use daemon thread for netty event loop | Major | IPC/RPC, rpc | +| [HBASE-15624](https://issues.apache.org/jira/browse/HBASE-15624) | Move master branch/hbase-2.0.0 to jdk-8 only | Blocker | build | +| [HBASE-16576](https://issues.apache.org/jira/browse/HBASE-16576) | Shell add\_peer doesn't allow setting cluster\_key for custom endpoints | Major | shell | +| [HBASE-16309](https://issues.apache.org/jira/browse/HBASE-16309) | TestDefaultCompactSelection.testCompactionRatio is flaky | Major | Compaction, test | +| [HBASE-16589](https://issues.apache.org/jira/browse/HBASE-16589) | Adjust log level for FATAL messages from HBaseReplicationEndpoint that are not fatal | Trivial | . | +| [HBASE-16544](https://issues.apache.org/jira/browse/HBASE-16544) | Remove or Clarify 'Using Amazon S3 Storage' section in the reference guide | Major | documentation, Filesystem Integration | +| [HBASE-16572](https://issues.apache.org/jira/browse/HBASE-16572) | Sync method in RecoverableZooKeeper failed to pass callback function in | Minor | Zookeeper | +| [HBASE-16460](https://issues.apache.org/jira/browse/HBASE-16460) | Can't rebuild the BucketAllocator's data structures when BucketCache uses FileIOEngine | Major | BucketCache | +| [HBASE-16556](https://issues.apache.org/jira/browse/HBASE-16556) | The read/write timeout are not used in HTable.delete(List), HTable.get(List), and HTable.existsAll(List) | Minor | . | +| [HBASE-16538](https://issues.apache.org/jira/browse/HBASE-16538) | Version mismatch in HBaseConfiguration.checkDefaultsVersion | Major | . | +| [HBASE-16552](https://issues.apache.org/jira/browse/HBASE-16552) | MiniHBaseCluster#getServerWith() does not ignore stopped RSs | Trivial | test | +| [HBASE-16547](https://issues.apache.org/jira/browse/HBASE-16547) | hbase-archetype-builder shell scripts assume bash is installed in /bin | Trivial | . | +| [HBASE-16375](https://issues.apache.org/jira/browse/HBASE-16375) | Mapreduce mini cluster using HBaseTestingUtility not setting correct resourcemanager and jobhistory webapp address of MapReduceTestingShim | Minor | . | +| [HBASE-16527](https://issues.apache.org/jira/browse/HBASE-16527) | IOExceptions from DFS client still can cause CatalogJanitor to delete referenced files | Major | . | +| [HBASE-15278](https://issues.apache.org/jira/browse/HBASE-15278) | AsyncRPCClient hangs if Connection closes before RPC call response | Blocker | rpc, test | +| [HBASE-16528](https://issues.apache.org/jira/browse/HBASE-16528) | Procedure-V2: ServerCrashProcedure misses owner information | Major | hbase, master, proc-v2 | +| [HBASE-16535](https://issues.apache.org/jira/browse/HBASE-16535) | Use regex to exclude generated classes for findbugs | Major | findbugs | +| [HBASE-16515](https://issues.apache.org/jira/browse/HBASE-16515) | AsyncProcess has incorrent count of tasks if the backoff policy is enabled | Minor | . | +| [HBASE-16490](https://issues.apache.org/jira/browse/HBASE-16490) | Fix race condition between SnapshotManager and SnapshotCleaner | Major | . | +| [HBASE-16409](https://issues.apache.org/jira/browse/HBASE-16409) | Row key for bad row should be properly delimited in VerifyReplication | Minor | . | +| [HBASE-16495](https://issues.apache.org/jira/browse/HBASE-16495) | When accessed via Thrift, all column families have timeToLive equal to -1 | Minor | Thrift | +| [HBASE-16304](https://issues.apache.org/jira/browse/HBASE-16304) | HRegion#RegionScannerImpl#handleFileNotFoundException may lead to deadlock when trying to obtain write lock on updatesLock | Critical | . | +| [HBASE-16270](https://issues.apache.org/jira/browse/HBASE-16270) | Handle duplicate clearing of snapshot in region replicas | Major | Replication | +| [HBASE-16471](https://issues.apache.org/jira/browse/HBASE-16471) | Region Server metrics context will be wrong when machine hostname contain "master" word | Minor | metrics | +| [HBASE-16456](https://issues.apache.org/jira/browse/HBASE-16456) | Fix findbugs warnings in hbase-rsgroup module | Minor | . | +| [HBASE-16464](https://issues.apache.org/jira/browse/HBASE-16464) | archive folder grows bigger and bigger due to corrupt snapshot under tmp dir | Major | snapshots | +| [HBASE-16360](https://issues.apache.org/jira/browse/HBASE-16360) | TableMapReduceUtil addHBaseDependencyJars has the wrong class name for PrefixTreeCodec | Minor | mapreduce | +| [HBASE-16446](https://issues.apache.org/jira/browse/HBASE-16446) | append\_peer\_tableCFs failed when there already have this table's partial cfs in the peer | Minor | Replication | +| [HBASE-16454](https://issues.apache.org/jira/browse/HBASE-16454) | Compactor's shipping logic decision should be based on the current store's block size | Minor | . | +| [HBASE-16444](https://issues.apache.org/jira/browse/HBASE-16444) | CellUtil#estimatedSerializedSizeOfKey() should consider KEY\_INFRASTRUCTURE\_SIZE | Minor | . | +| [HBASE-7621](https://issues.apache.org/jira/browse/HBASE-7621) | REST client (RemoteHTable) doesn't support binary row keys | Major | REST | +| [HBASE-16430](https://issues.apache.org/jira/browse/HBASE-16430) | Fix RegionServer Group's bug when moving multiple tables | Major | master | +| [HBASE-16429](https://issues.apache.org/jira/browse/HBASE-16429) | FSHLog: deadlock if rollWriter called when ring buffer filled with appends | Critical | . | +| [HBASE-16384](https://issues.apache.org/jira/browse/HBASE-16384) | Update report-flakies.py script to allow specifying a list of build ids to be excluded | Major | . | +| [HBASE-15635](https://issues.apache.org/jira/browse/HBASE-15635) | Mean age of Blocks in cache (seconds) on webUI should be greater than zero | Major | . | +| [HBASE-16341](https://issues.apache.org/jira/browse/HBASE-16341) | Missing bit on "Regression: Random Read/WorkloadC slower in 1.x than 0.98" | Major | rpc | +| [HBASE-16267](https://issues.apache.org/jira/browse/HBASE-16267) | Remove commons-httpclient dependency from hbase-rest module | Critical | . | +| [HBASE-16389](https://issues.apache.org/jira/browse/HBASE-16389) | Thread leak in CoprocessorHost#getTable(TableName) API | Major | . | +| [HBASE-16363](https://issues.apache.org/jira/browse/HBASE-16363) | Correct javadoc for qualifier length and value length in Cell interface | Minor | documentation | +| [HBASE-16368](https://issues.apache.org/jira/browse/HBASE-16368) | test\*WhenRegionMove in TestPartialResultsFromClientSide is flaky | Major | Scanners | +| [HBASE-16310](https://issues.apache.org/jira/browse/HBASE-16310) | Revisit the logic of filterRowKey for Filters | Major | . | +| [HBASE-16361](https://issues.apache.org/jira/browse/HBASE-16361) | Revert of HBASE-16317, "revert all ESAPI..." broke TestLogLevel | Major | dependencies, UI | +| [HBASE-16367](https://issues.apache.org/jira/browse/HBASE-16367) | Race between master and region server initialization may lead to premature server abort | Major | . | +| [HBASE-16303](https://issues.apache.org/jira/browse/HBASE-16303) | FilterList with MUST\_PASS\_ONE optimization | Major | Filters | +| [HBASE-15866](https://issues.apache.org/jira/browse/HBASE-15866) | Split hbase.rpc.timeout into \*.read.timeout and \*.write.timeout | Major | . | +| [HBASE-16362](https://issues.apache.org/jira/browse/HBASE-16362) | Mob compaction does not set cacheBlocks to false when creating StoreScanner | Major | Compaction, regionserver | +| [HBASE-16359](https://issues.apache.org/jira/browse/HBASE-16359) | NullPointerException in RSRpcServices.openRegion() | Major | . | +| [HBASE-15461](https://issues.apache.org/jira/browse/HBASE-15461) | ref guide has bad links to blogs originally posted on cloudera website | Major | website | +| [HBASE-15574](https://issues.apache.org/jira/browse/HBASE-15574) | Minor typo on HRegionServerCommandLine.java | Trivial | . | +| [HBASE-16350](https://issues.apache.org/jira/browse/HBASE-16350) | Undo server abort from HBASE-14968 | Major | . | +| [HBASE-16271](https://issues.apache.org/jira/browse/HBASE-16271) | Fix logging and re-run the test in IntegrationTestBulkLoad | Major | . | +| [HBASE-16347](https://issues.apache.org/jira/browse/HBASE-16347) | Unevaluated expressions in book | Major | documentation, website | +| [HBASE-16301](https://issues.apache.org/jira/browse/HBASE-16301) | Trigger flush without waiting when compaction is disabled on a table | Minor | . | +| [HBASE-16319](https://issues.apache.org/jira/browse/HBASE-16319) | Fix TestCacheOnWrite after HBASE-16288 | Trivial | . | +| [HBASE-16315](https://issues.apache.org/jira/browse/HBASE-16315) | RegionSizeCalculator prints region names as binary without escapes | Trivial | . | +| [HBASE-16284](https://issues.apache.org/jira/browse/HBASE-16284) | Unauthorized client can shutdown the cluster | Major | . | +| [HBASE-16296](https://issues.apache.org/jira/browse/HBASE-16296) | Reverse scan performance degrades when using filter lists | Major | Filters | +| [HBASE-16288](https://issues.apache.org/jira/browse/HBASE-16288) | HFile intermediate block level indexes might recurse forever creating multi TB files | Critical | HFile | +| [HBASE-16234](https://issues.apache.org/jira/browse/HBASE-16234) | Expect and handle nulls when assigning replicas | Major | Region Assignment | +| [HBASE-16306](https://issues.apache.org/jira/browse/HBASE-16306) | Add specific imports to avoid namespace clash in defaultSource.scala | Minor | . | +| [HBASE-16300](https://issues.apache.org/jira/browse/HBASE-16300) | LruBlockCache.CACHE\_FIXED\_OVERHEAD should calculate LruBlockCache size correctly | Major | . | +| [HBASE-16289](https://issues.apache.org/jira/browse/HBASE-16289) | AsyncProcess stuck messages need to print region/server | Critical | Operability | +| [HBASE-16096](https://issues.apache.org/jira/browse/HBASE-16096) | Replication keeps accumulating znodes | Major | Replication | +| [HBASE-16293](https://issues.apache.org/jira/browse/HBASE-16293) | TestSnapshotFromMaster#testSnapshotHFileArchiving flakey | Major | test | +| [HBASE-16281](https://issues.apache.org/jira/browse/HBASE-16281) | TestMasterReplication is flaky | Major | . | +| [HBASE-16221](https://issues.apache.org/jira/browse/HBASE-16221) | Thrift server drops connection on long scans | Major | Thrift | +| [HBASE-16272](https://issues.apache.org/jira/browse/HBASE-16272) | Overflow in ServerName's compareTo method | Major | hbase | +| [HBASE-16244](https://issues.apache.org/jira/browse/HBASE-16244) | LocalHBaseCluster start timeout should be configurable | Major | hbase | +| [HBASE-16238](https://issues.apache.org/jira/browse/HBASE-16238) | It's useless to catch SESSIONEXPIRED exception and retry in RecoverableZooKeeper | Minor | Zookeeper | +| [HBASE-16172](https://issues.apache.org/jira/browse/HBASE-16172) | Unify the retry logic in ScannerCallableWithReplicas and RpcRetryingCallerWithReadReplicas | Major | . | +| [HBASE-16110](https://issues.apache.org/jira/browse/HBASE-16110) | AsyncFS WAL doesn't work with Hadoop 2.8+ | Blocker | wal | +| [HBASE-16076](https://issues.apache.org/jira/browse/HBASE-16076) | Cannot configure split policy in HBase shell | Minor | documentation | +| [HBASE-16144](https://issues.apache.org/jira/browse/HBASE-16144) | Replication queue's lock will live forever if RS acquiring the lock has died prematurely | Major | . | +| [HBASE-16235](https://issues.apache.org/jira/browse/HBASE-16235) | TestSnapshotFromMaster#testSnapshotHFileArchiving will fail if there are too many hfiles | Trivial | . | +| [HBASE-16183](https://issues.apache.org/jira/browse/HBASE-16183) | Correct errors in example programs of coprocessor in Ref Guide | Minor | documentation | +| [HBASE-16095](https://issues.apache.org/jira/browse/HBASE-16095) | Add priority to TableDescriptor and priority region open thread pool | Major | . | +| [HBASE-16227](https://issues.apache.org/jira/browse/HBASE-16227) | [Shell] Column value formatter not working in scans | Major | . | +| [HBASE-16211](https://issues.apache.org/jira/browse/HBASE-16211) | JMXCacheBuster restarting the metrics system might cause tests to hang | Major | . | +| [HBASE-16150](https://issues.apache.org/jira/browse/HBASE-16150) | Remove ConcurrentIndex | Major | . | +| [HBASE-16207](https://issues.apache.org/jira/browse/HBASE-16207) | can't restore snapshot without "Admin" permission | Major | master, snapshots | +| [HBASE-16184](https://issues.apache.org/jira/browse/HBASE-16184) | Shell test fails due to rLoadSink being nil | Major | . | +| [HBASE-16055](https://issues.apache.org/jira/browse/HBASE-16055) | PutSortReducer loses any Visibility/acl attribute set on the Puts | Critical | security | +| [HBASE-16081](https://issues.apache.org/jira/browse/HBASE-16081) | Replication remove\_peer gets stuck and blocks WAL rolling | Blocker | regionserver, Replication | +| [HBASE-16044](https://issues.apache.org/jira/browse/HBASE-16044) | Fix 'hbase shell' output parsing in graceful\_stop.sh | Critical | scripts, shell | +| [HBASE-16160](https://issues.apache.org/jira/browse/HBASE-16160) | Get the UnsupportedOperationException when using delegation token with encryption | Blocker | . | +| [HBASE-16074](https://issues.apache.org/jira/browse/HBASE-16074) | ITBLL fails, reports lost big or tiny families | Blocker | integration tests | +| [HBASE-16201](https://issues.apache.org/jira/browse/HBASE-16201) | NPE in RpcServer causing intermittent UT failure of TestMasterReplication#testHFileCyclicReplication | Major | . | +| [HBASE-16171](https://issues.apache.org/jira/browse/HBASE-16171) | Fix the potential problems in TestHCM.testConnectionCloseAllowsInterrupt | Major | . | +| [HBASE-15925](https://issues.apache.org/jira/browse/HBASE-15925) | compat-module maven variable not evaluated | Blocker | build | +| [HBASE-16187](https://issues.apache.org/jira/browse/HBASE-16187) | Fix typo in blog post for metrics2 | Major | website | +| [HBASE-16190](https://issues.apache.org/jira/browse/HBASE-16190) | IntegrationTestDDLMasterFailover failed with IllegalArgumentException: n must be positive | Minor | . | +| [HBASE-16182](https://issues.apache.org/jira/browse/HBASE-16182) | Increase IntegrationTestRpcClient timeout | Major | . | +| [HBASE-16157](https://issues.apache.org/jira/browse/HBASE-16157) | The incorrect block cache count and size are caused by removing duplicate block key in the LruBlockCache | Trivial | . | +| [HBASE-16177](https://issues.apache.org/jira/browse/HBASE-16177) | In dev mode thrift server can't be run | Major | . | +| [HBASE-16091](https://issues.apache.org/jira/browse/HBASE-16091) | Canary takes lot more time when there are delete markers in the table | Major | canary | +| [HBASE-16132](https://issues.apache.org/jira/browse/HBASE-16132) | Scan does not return all the result when regionserver is busy | Major | Client | +| [HBASE-16135](https://issues.apache.org/jira/browse/HBASE-16135) | PeerClusterZnode under rs of removed peer may never be deleted | Major | Replication | +| [HBASE-15844](https://issues.apache.org/jira/browse/HBASE-15844) | We should respect hfile.block.index.cacheonwrite when write intermediate index Block | Major | . | +| [HBASE-16159](https://issues.apache.org/jira/browse/HBASE-16159) | OutOfMemory exception when using AsyncRpcClient with encryption to read rpc response | Major | . | +| [HBASE-16125](https://issues.apache.org/jira/browse/HBASE-16125) | RegionMover uses hardcoded, Unix-style tmp folder - breaks Windows | Major | . | +| [HBASE-16133](https://issues.apache.org/jira/browse/HBASE-16133) | RSGroupBasedLoadBalancer.retainAssignment() might miss a region | Major | . | +| [HBASE-16129](https://issues.apache.org/jira/browse/HBASE-16129) | check\_compatibility.sh is broken when using Java API Compliance Checker v1.7 | Major | test | +| [HBASE-15976](https://issues.apache.org/jira/browse/HBASE-15976) | RegionServerMetricsWrapperRunnable will be failure when disable blockcache. | Major | . | +| [HBASE-16122](https://issues.apache.org/jira/browse/HBASE-16122) | PerformanceEvaluation should provide user friendly hint when client threads argument is missing | Minor | . | +| [HBASE-16069](https://issues.apache.org/jira/browse/HBASE-16069) | Typo "trapsparently" in item 3 of chapter 87.2 of Reference Guide | Minor | documentation | +| [HBASE-16109](https://issues.apache.org/jira/browse/HBASE-16109) | Add Interface audience annotation to a few classes | Minor | . | +| [HBASE-16111](https://issues.apache.org/jira/browse/HBASE-16111) | Truncate preserve shell command is broken | Major | shell | +| [HBASE-16103](https://issues.apache.org/jira/browse/HBASE-16103) | Procedure v2 - TestCloneSnapshotProcedure relies on execution order | Minor | proc-v2, test | +| [HBASE-16040](https://issues.apache.org/jira/browse/HBASE-16040) | Remove configuration "hbase.replication" | Major | . | +| [HBASE-16070](https://issues.apache.org/jira/browse/HBASE-16070) | Mapreduce Serialization classes do not have Interface audience | Major | . | +| [HBASE-16012](https://issues.apache.org/jira/browse/HBASE-16012) | Major compaction can't work due to obsolete scanner read point in RegionServer | Major | Compaction, Scanners | +| [HBASE-16062](https://issues.apache.org/jira/browse/HBASE-16062) | Improper error handling in WAL Reader/Writer creation | Major | . | +| [HBASE-16032](https://issues.apache.org/jira/browse/HBASE-16032) | Possible memory leak in StoreScanner | Major | . | +| [HBASE-16035](https://issues.apache.org/jira/browse/HBASE-16035) | Nested AutoCloseables might not all get closed | Major | . | +| [HBASE-15783](https://issues.apache.org/jira/browse/HBASE-15783) | AccessControlConstants#OP\_ATTRIBUTE\_ACL\_STRATEGY\_CELL\_FIRST not used any more. | Major | . | +| [HBASE-16059](https://issues.apache.org/jira/browse/HBASE-16059) | Region normalizer fails to trigger merge action where one of the regions is empty | Major | master | +| [HBASE-14485](https://issues.apache.org/jira/browse/HBASE-14485) | ConnectionImplementation leaks on construction failure | Major | Client | +| [HBASE-16054](https://issues.apache.org/jira/browse/HBASE-16054) | OutOfMemory exception when using AsyncRpcClient with encryption | Major | . | +| [HBASE-16066](https://issues.apache.org/jira/browse/HBASE-16066) | Resolve RpC\_REPEATED\_CONDITIONAL\_TEST findbugs warnings in HMaster | Major | . | +| [HBASE-16058](https://issues.apache.org/jira/browse/HBASE-16058) | TestHRegion fails on 1.4 builds | Major | test | +| [HBASE-15467](https://issues.apache.org/jira/browse/HBASE-15467) | Remove 1.x/2.0 TableDescriptor incompatibility | Major | master, regionserver | +| [HBASE-16061](https://issues.apache.org/jira/browse/HBASE-16061) | Allow logging to a buffered console | Major | . | +| [HBASE-16053](https://issues.apache.org/jira/browse/HBASE-16053) | Master code is not setting the table in ENABLING state in create table | Major | . | +| [HBASE-16045](https://issues.apache.org/jira/browse/HBASE-16045) | endtime argument for VerifyReplication was incorrectly specified in usage | Major | . | +| [HBASE-15977](https://issues.apache.org/jira/browse/HBASE-15977) | Failed variable substitution on home page | Major | website | +| [HBASE-16047](https://issues.apache.org/jira/browse/HBASE-16047) | TestFastFail is broken again | Major | test | +| [HBASE-15908](https://issues.apache.org/jira/browse/HBASE-15908) | Checksum verification is broken due to incorrect passing of ByteBuffers in DataChecksum | Blocker | HFile | +| [HBASE-16031](https://issues.apache.org/jira/browse/HBASE-16031) | Documents about "hbase.replication" default value seems wrong | Major | documentation | +| [HBASE-16017](https://issues.apache.org/jira/browse/HBASE-16017) | HBase TableOutputFormat has connection leak in getRecordWriter | Major | mapreduce | +| [HBASE-15746](https://issues.apache.org/jira/browse/HBASE-15746) | Remove extra RegionCoprocessor preClose() in RSRpcServices#closeRegion | Minor | Coprocessors, regionserver | +| [HBASE-16021](https://issues.apache.org/jira/browse/HBASE-16021) | graceful\_stop.sh: Wrap variables in double quote to avoid "[: too many arguments" error | Minor | scripts | +| [HBASE-16016](https://issues.apache.org/jira/browse/HBASE-16016) | AssignmentManager#waitForAssignment could have unexpected negative deadline | Major | . | +| [HBASE-16007](https://issues.apache.org/jira/browse/HBASE-16007) | Job's Configuration should be passed to TableMapReduceUtil#addDependencyJars() in WALPlayer | Major | . | +| [HBASE-14644](https://issues.apache.org/jira/browse/HBASE-14644) | Region in transition metric is broken | Major | . | +| [HBASE-15946](https://issues.apache.org/jira/browse/HBASE-15946) | Eliminate possible security concerns in RS web UI's store file metrics | Major | . | +| [HBASE-15990](https://issues.apache.org/jira/browse/HBASE-15990) | The priority value of subsequent coprocessors in the Coprocessor.Priority.SYSTEM list are not incremented by one | Minor | . | +| [HBASE-15952](https://issues.apache.org/jira/browse/HBASE-15952) | Bulk load data replication is not working when RS user does not have permission on hfile-refs node | Major | Replication | +| [HBASE-15975](https://issues.apache.org/jira/browse/HBASE-15975) | logic in TestHTableDescriptor#testAddCoprocessorWithSpecStr is wrong | Trivial | test | +| [HBASE-15959](https://issues.apache.org/jira/browse/HBASE-15959) | Fix flaky test TestRegionServerMetrics.testMobMetrics | Major | . | +| [HBASE-15957](https://issues.apache.org/jira/browse/HBASE-15957) | RpcClientImpl.close never ends in some circumstances | Major | Client, rpc | +| [HBASE-15803](https://issues.apache.org/jira/browse/HBASE-15803) | ZooKeeperWatcher's constructor can leak a ZooKeeper instance with throwing ZooKeeperConnectionException when canCreateBaseZNode is true | Minor | . | +| [HBASE-15698](https://issues.apache.org/jira/browse/HBASE-15698) | Increment TimeRange not serialized to server | Blocker | . | +| [HBASE-15965](https://issues.apache.org/jira/browse/HBASE-15965) | Shell test changes. Use @shell.command instead directly calling functions in admin.rb and other libraries. | Major | . | +| [HBASE-15954](https://issues.apache.org/jira/browse/HBASE-15954) | REST server should log requests with TRACE instead of DEBUG | Major | . | +| [HBASE-15889](https://issues.apache.org/jira/browse/HBASE-15889) | String case conversions are locale-sensitive, used without locale | Minor | localization | +| [HBASE-15955](https://issues.apache.org/jira/browse/HBASE-15955) | Disable action in CatalogJanitor#setEnabled should wait for active cleanup scan to finish | Major | master | +| [HBASE-15929](https://issues.apache.org/jira/browse/HBASE-15929) | There are two classes with name TestRegionServerMetrics | Major | . | +| [HBASE-15845](https://issues.apache.org/jira/browse/HBASE-15845) | Shell Cleanup : move formatter to commands.rb; move one of the two hbase.rb to hbase\_constants.rb | Minor | shell | +| [HBASE-15933](https://issues.apache.org/jira/browse/HBASE-15933) | NullPointerException may be thrown from SimpleRegionNormalizer#getRegionSize() | Major | . | +| [HBASE-15938](https://issues.apache.org/jira/browse/HBASE-15938) | submit-patch.py: Don't crash if there are tests with same name. Refactor: Split out html template to separate file. | Major | . | +| [HBASE-15944](https://issues.apache.org/jira/browse/HBASE-15944) | Spark test flooding mvn output. Redirect test logs to file. | Major | . | +| [HBASE-15858](https://issues.apache.org/jira/browse/HBASE-15858) | Some region server group shell commands don't work | Major | . | +| [HBASE-15932](https://issues.apache.org/jira/browse/HBASE-15932) | Shell test fails due to uninitialized constant | Major | . | +| [HBASE-15907](https://issues.apache.org/jira/browse/HBASE-15907) | Missing documentation of create table split options | Major | documentation | +| [HBASE-15918](https://issues.apache.org/jira/browse/HBASE-15918) | Cleanup excludes/includes file after use in hbase-personality.sh to avoid asf license error. | Major | . | +| [HBASE-15897](https://issues.apache.org/jira/browse/HBASE-15897) | Fix a wrong comment about QOS order | Trivial | . | +| [HBASE-15909](https://issues.apache.org/jira/browse/HBASE-15909) | Use Yetus' patch naming rules in submit-patch.py | Major | . | +| [HBASE-15912](https://issues.apache.org/jira/browse/HBASE-15912) | REST module has 2 extant results in findbugs | Major | . | +| [HBASE-15891](https://issues.apache.org/jira/browse/HBASE-15891) | Closeable resources potentially not getting closed if exception is thrown | Minor | . | +| [HBASE-15693](https://issues.apache.org/jira/browse/HBASE-15693) | Reconsider the ImportOrder rule of checkstyle | Major | build | +| [HBASE-11625](https://issues.apache.org/jira/browse/HBASE-11625) | Reading datablock throws "Invalid HFile block magic" and can not switch to hdfs checksum | Major | HFile | +| [HBASE-15830](https://issues.apache.org/jira/browse/HBASE-15830) | Sasl encryption doesn't work with AsyncRpcChannelImpl | Major | . | +| [HBASE-15884](https://issues.apache.org/jira/browse/HBASE-15884) | NPE in StoreFileScanner#skipKVsNewerThanReadpoint during reverse scan | Major | Scanners | +| [HBASE-15880](https://issues.apache.org/jira/browse/HBASE-15880) | RpcClientImpl#tracedWriteRequest incorrectly closes HTrace span | Major | tracing | +| [HBASE-14818](https://issues.apache.org/jira/browse/HBASE-14818) | user\_permission does not list namespace permissions | Minor | hbase | +| [HBASE-15856](https://issues.apache.org/jira/browse/HBASE-15856) | Cached Connection instances can wind up with addresses never resolved | Critical | Client | +| [HBASE-15863](https://issues.apache.org/jira/browse/HBASE-15863) | Typo in Put.java class documentation | Trivial | documentation, java | +| [HBASE-15465](https://issues.apache.org/jira/browse/HBASE-15465) | userPermission returned by getUserPermission() for the selected namespace does not have namespace set | Minor | Protobufs | +| [HBASE-15617](https://issues.apache.org/jira/browse/HBASE-15617) | Canary in regionserver mode might not enumerate all regionservers | Minor | . | +| [HBASE-15850](https://issues.apache.org/jira/browse/HBASE-15850) | Localize the configuration change in testCheckTableLocks to reduce flakiness of TestHBaseFsck test suite | Major | hbck | +| [HBASE-15841](https://issues.apache.org/jira/browse/HBASE-15841) | Performance Evaluation tool total rows may not be set correctly | Minor | . | +| [HBASE-15824](https://issues.apache.org/jira/browse/HBASE-15824) | LocalHBaseCluster gets bind exception in master info port | Major | . | +| [HBASE-15784](https://issues.apache.org/jira/browse/HBASE-15784) | Misuse core/maxPoolSize of LinkedBlockingQueue in ThreadPoolExecutor | Major | Client, Replication, Thrift | +| [HBASE-15834](https://issues.apache.org/jira/browse/HBASE-15834) | Correct Bloom filter documentation in section 96.4 of Reference Guide | Minor | documentation | +| [HBASE-15769](https://issues.apache.org/jira/browse/HBASE-15769) | Perform validation on cluster key for add\_peer | Minor | . | +| [HBASE-15848](https://issues.apache.org/jira/browse/HBASE-15848) | Fix possible null point dereference in RSGroupBasedLoadBalancer#getMisplacedRegions() | Trivial | regionserver | +| [HBASE-15840](https://issues.apache.org/jira/browse/HBASE-15840) | WAL.proto compilation broken for cpp | Major | . | +| [HBASE-15725](https://issues.apache.org/jira/browse/HBASE-15725) | make\_patch.sh should add the branch name when -b is passed. | Major | tooling | +| [HBASE-15828](https://issues.apache.org/jira/browse/HBASE-15828) | fix extant findbug | Major | findbugs | +| [HBASE-15615](https://issues.apache.org/jira/browse/HBASE-15615) | Wrong sleep time when RegionServerCallable need retry | Major | Client | +| [HBASE-15811](https://issues.apache.org/jira/browse/HBASE-15811) | Batch Get after batch Put does not fetch all Cells | Blocker | Client | +| [HBASE-15742](https://issues.apache.org/jira/browse/HBASE-15742) | Reduce allocation of objects in metrics | Major | . | +| [HBASE-15799](https://issues.apache.org/jira/browse/HBASE-15799) | Two Shell 'close\_region' Example Syntaxes Don't Work | Minor | shell | +| [HBASE-15801](https://issues.apache.org/jira/browse/HBASE-15801) | Upgrade checkstyle for all branches | Major | build | +| [HBASE-15797](https://issues.apache.org/jira/browse/HBASE-15797) | TestIPCUtil fails after HBASE-15795 | Major | . | +| [HBASE-15236](https://issues.apache.org/jira/browse/HBASE-15236) | Inconsistent cell reads over multiple bulk-loaded HFiles | Major | . | +| [HBASE-15807](https://issues.apache.org/jira/browse/HBASE-15807) | Update report-flakies.py to look for "FAILED" status in test report | Minor | . | +| [HBASE-15738](https://issues.apache.org/jira/browse/HBASE-15738) | Ensure artifacts in project dist area include required md5 file | Blocker | build, community | +| [HBASE-15796](https://issues.apache.org/jira/browse/HBASE-15796) | TestMetaCache fails after HBASE-15745 | Major | . | +| [HBASE-15781](https://issues.apache.org/jira/browse/HBASE-15781) | Remove unused TableEventHandler and TotesHRegionInfo | Trivial | master | +| [HBASE-15782](https://issues.apache.org/jira/browse/HBASE-15782) | TestShell fails due to some moved types | Major | . | +| [HBASE-15669](https://issues.apache.org/jira/browse/HBASE-15669) | HFile size is not considered correctly in a replication request | Major | Replication | +| [HBASE-15292](https://issues.apache.org/jira/browse/HBASE-15292) | Refined ZooKeeperWatcher to prevent ZooKeeper's callback while construction | Minor | Zookeeper | +| [HBASE-15563](https://issues.apache.org/jira/browse/HBASE-15563) | 'counter' may overflow in BoundedGroupingStrategy | Minor | wal | +| [HBASE-15755](https://issues.apache.org/jira/browse/HBASE-15755) | SnapshotDescriptionUtils and SnapshotTestingUtils do not have any Interface audience marked | Major | . | +| [HBASE-15741](https://issues.apache.org/jira/browse/HBASE-15741) | Provide backward compatibility for HBase coprocessor service names | Blocker | Coprocessors | +| [HBASE-15613](https://issues.apache.org/jira/browse/HBASE-15613) | TestNamespaceCommand times out | Major | . | +| [HBASE-15528](https://issues.apache.org/jira/browse/HBASE-15528) | Clean up outdated entries in hbase-default.xml | Minor | . | +| [HBASE-15752](https://issues.apache.org/jira/browse/HBASE-15752) | ClassNotFoundException is encountered when custom WAL codec is not found in WALPlayer job | Major | . | +| [HBASE-15714](https://issues.apache.org/jira/browse/HBASE-15714) | We are calling checkRow() twice in doMiniBatchMutation() | Major | regionserver | +| [HBASE-15703](https://issues.apache.org/jira/browse/HBASE-15703) | Deadline scheduler needs to return to the client info about skipped calls, not just drop them | Critical | IPC/RPC | +| [HBASE-15357](https://issues.apache.org/jira/browse/HBASE-15357) | TableInputFormatBase getSplitKey does not handle signed bytes correctly | Major | mapreduce | +| [HBASE-15711](https://issues.apache.org/jira/browse/HBASE-15711) | Add client side property to allow logging details for batch errors | Major | . | +| [HBASE-15732](https://issues.apache.org/jira/browse/HBASE-15732) | hbase-rsgroups should be in the assembly | Major | . | +| [HBASE-15676](https://issues.apache.org/jira/browse/HBASE-15676) | FuzzyRowFilter fails and matches all the rows in the table if the mask consists of all 0s | Major | Filters | +| [HBASE-15697](https://issues.apache.org/jira/browse/HBASE-15697) | Excessive TestHRegion running time on branch-1 | Major | . | +| [HBASE-15685](https://issues.apache.org/jira/browse/HBASE-15685) | Typo in REST documentation | Minor | documentation | +| [HBASE-15708](https://issues.apache.org/jira/browse/HBASE-15708) | Docker for dev-support scripts | Major | . | +| [HBASE-15707](https://issues.apache.org/jira/browse/HBASE-15707) | ImportTSV bulk output does not support tags with hfile.format.version=3 | Major | mapreduce | +| [HBASE-15645](https://issues.apache.org/jira/browse/HBASE-15645) | hbase.rpc.timeout is not used in operations of HTable | Critical | . | +| [HBASE-15634](https://issues.apache.org/jira/browse/HBASE-15634) | TestDateTieredCompactionPolicy#negativeForMajor is flaky | Major | test | +| [HBASE-15710](https://issues.apache.org/jira/browse/HBASE-15710) | Include issue servers information in RetriesExhaustedWithDetailsException message | Minor | . | +| [HBASE-14252](https://issues.apache.org/jira/browse/HBASE-14252) | RegionServers fail to start when setting hbase.ipc.server.callqueue.scan.ratio to 0 | Major | regionserver | +| [HBASE-15699](https://issues.apache.org/jira/browse/HBASE-15699) | Can not sync AsyncFSWAL if no edit is appended | Major | wal | +| [HBASE-15360](https://issues.apache.org/jira/browse/HBASE-15360) | Fix flaky TestSimpleRpcScheduler | Critical | test | +| [HBASE-15670](https://issues.apache.org/jira/browse/HBASE-15670) | Add missing Snapshot.proto to the maven profile for compiling protobuf | Major | . | +| [HBASE-15674](https://issues.apache.org/jira/browse/HBASE-15674) | HRegionLocator#getAllRegionLocations should put the results in cache | Major | . | +| [HBASE-15672](https://issues.apache.org/jira/browse/HBASE-15672) | hadoop.hbase.security.visibility.TestVisibilityLabelsWithDeletes fails | Major | test | +| [HBASE-15673](https://issues.apache.org/jira/browse/HBASE-15673) | [PE tool] Fix latency metrics for multiGet | Major | Performance | +| [HBASE-14898](https://issues.apache.org/jira/browse/HBASE-14898) | Correct Bloom filter documentation in the book | Minor | . | +| [HBASE-15664](https://issues.apache.org/jira/browse/HBASE-15664) | Use Long.MAX\_VALUE instead of HConstants.FOREVER in CompactionPolicy | Major | Compaction | +| [HBASE-15668](https://issues.apache.org/jira/browse/HBASE-15668) | HFileReplicator$Copier fails to replicate other hfiles in the request when a hfile in not found in FS anywhere | Trivial | Replication | +| [HBASE-15287](https://issues.apache.org/jira/browse/HBASE-15287) | mapreduce.RowCounter returns incorrect result with binary row key inputs | Major | mapreduce, util | +| [HBASE-15187](https://issues.apache.org/jira/browse/HBASE-15187) | Integrate CSRF prevention filter to REST gateway | Major | . | +| [HBASE-15650](https://issues.apache.org/jira/browse/HBASE-15650) | Remove TimeRangeTracker as point of contention when many threads reading a StoreFile | Major | Performance | +| [HBASE-15622](https://issues.apache.org/jira/browse/HBASE-15622) | Superusers does not consider the keytab credentials | Critical | security | +| [HBASE-15405](https://issues.apache.org/jira/browse/HBASE-15405) | Synchronize final results logging single thread in PE, fix wrong defaults in help message | Minor | Performance | +| [HBASE-15504](https://issues.apache.org/jira/browse/HBASE-15504) | Fix Balancer in 1.3 not moving regions off overloaded regionserver | Major | . | +| [HBASE-15637](https://issues.apache.org/jira/browse/HBASE-15637) | TSHA Thrift-2 server should allow limiting call queue size | Major | Thrift | +| [HBASE-15639](https://issues.apache.org/jira/browse/HBASE-15639) | Unguarded access to stackIndexes in Procedure#toStringDetails() | Minor | . | +| [HBASE-15636](https://issues.apache.org/jira/browse/HBASE-15636) | hard coded wait time out value in HBaseTestingUtility#waitUntilAllRegionsAssigned might cause test failure | Minor | integration tests, test | +| [HBASE-15621](https://issues.apache.org/jira/browse/HBASE-15621) | Suppress Hbase SnapshotHFile cleaner error messages when a snaphot is going on | Minor | snapshots | +| [HBASE-15627](https://issues.apache.org/jira/browse/HBASE-15627) | Miss space and closing quote in AccessController#checkSystemOrSuperUser | Minor | security | +| [HBASE-15093](https://issues.apache.org/jira/browse/HBASE-15093) | Replication can report incorrect size of log queue for the global source when multiwal is enabled | Minor | Replication | +| [HBASE-15591](https://issues.apache.org/jira/browse/HBASE-15591) | ServerCrashProcedure not yielding | Major | . | +| [HBASE-15623](https://issues.apache.org/jira/browse/HBASE-15623) | Update refguide to change hadoop \<= 2.3.x from NT to X for hbase-1.2.x | Major | documentation | +| [HBASE-15587](https://issues.apache.org/jira/browse/HBASE-15587) | FSTableDescriptors.getDescriptor() logs stack trace erronously | Major | . | +| [HBASE-15485](https://issues.apache.org/jira/browse/HBASE-15485) | Filter.reset() should not be called between batches | Major | . | +| [HBASE-15578](https://issues.apache.org/jira/browse/HBASE-15578) | Handle HBASE-15234 for ReplicationHFileCleaner | Major | Replication | +| [HBASE-15582](https://issues.apache.org/jira/browse/HBASE-15582) | SnapshotManifestV1 too verbose when there are no regions | Trivial | master, snapshots | +| [HBASE-15424](https://issues.apache.org/jira/browse/HBASE-15424) | Add bulk load hfile-refs for replication in ZK after the event is appended in the WAL | Minor | Replication | +| [HBASE-15234](https://issues.apache.org/jira/browse/HBASE-15234) | ReplicationLogCleaner can abort due to transient ZK issues | Critical | master, Replication | +| [HBASE-15567](https://issues.apache.org/jira/browse/HBASE-15567) | TestReplicationShell broken by recent replication changes | Minor | Replication, shell | +| [HBASE-15324](https://issues.apache.org/jira/browse/HBASE-15324) | Jitter may cause desiredMaxFileSize overflow in ConstantSizeRegionSplitPolicy and trigger unexpected split | Major | . | +| [HBASE-15566](https://issues.apache.org/jira/browse/HBASE-15566) | Add timeouts on TestMobFlushSnapshotFromClient and TestRegionMergeTransactionOnCluster | Major | . | +| [HBASE-15559](https://issues.apache.org/jira/browse/HBASE-15559) | BaseMasterAndRegionObserver doesn't implement all the methods | Major | . | +| [HBASE-15327](https://issues.apache.org/jira/browse/HBASE-15327) | Canary will always invoke admin.balancer() in each sniffing period when writeSniffing is enabled | Minor | canary | +| [HBASE-15295](https://issues.apache.org/jira/browse/HBASE-15295) | MutateTableAccess.multiMutate() does not get high priority causing a deadlock | Major | . | +| [HBASE-15515](https://issues.apache.org/jira/browse/HBASE-15515) | Improve LocalityBasedCandidateGenerator in Balancer | Minor | . | +| [HBASE-14256](https://issues.apache.org/jira/browse/HBASE-14256) | Flush task message may be confusing when region is recovered | Major | regionserver | +| [HBASE-15520](https://issues.apache.org/jira/browse/HBASE-15520) | Fix broken TestAsyncIPC | Major | . | +| [HBASE-15064](https://issues.apache.org/jira/browse/HBASE-15064) | BufferUnderflowException after last Cell fetched from an HFile Block served from L2 offheap cache | Critical | io | +| [HBASE-15325](https://issues.apache.org/jira/browse/HBASE-15325) | ResultScanner allowing partial result will miss the rest of the row if the region is moved between two rpc requests | Critical | dataloss, Scanners | +| [HBASE-15433](https://issues.apache.org/jira/browse/HBASE-15433) | SnapshotManager#restoreSnapshot not update table and region count quota correctly when encountering exception | Major | snapshots | +| [HBASE-15441](https://issues.apache.org/jira/browse/HBASE-15441) | Fix WAL splitting when region has moved multiple times | Blocker | Recovery, wal | +| [HBASE-15430](https://issues.apache.org/jira/browse/HBASE-15430) | Failed taking snapshot - Manifest proto-message too large | Critical | snapshots | +| [HBASE-15463](https://issues.apache.org/jira/browse/HBASE-15463) | Region normalizer should check whether split/merge is enabled | Minor | . | +| [HBASE-15439](https://issues.apache.org/jira/browse/HBASE-15439) | getMaximumAllowedTimeBetweenRuns in ScheduledChore ignores the TimeUnit | Major | master, mob, regionserver | +| [HBASE-15379](https://issues.apache.org/jira/browse/HBASE-15379) | Fake cells created in read path not implementing SettableSequenceId | Major | . | +| [HBASE-15425](https://issues.apache.org/jira/browse/HBASE-15425) | Failing to write bulk load event marker in the WAL is ignored | Major | . | +| [HBASE-15378](https://issues.apache.org/jira/browse/HBASE-15378) | Scanner cannot handle heartbeat message with no results | Critical | dataloss, Scanners | +| [HBASE-15271](https://issues.apache.org/jira/browse/HBASE-15271) | Spark Bulk Load: Need to write HFiles to tmp location then rename to protect from Spark Executor Failures | Major | . | +| [HBASE-15364](https://issues.apache.org/jira/browse/HBASE-15364) | Fix unescaped \< characters in Javadoc | Major | API, documentation | +| [HBASE-15137](https://issues.apache.org/jira/browse/HBASE-15137) | CallTimeoutException and CallQueueTooBigException should trigger PFFE | Major | . | +| [HBASE-15393](https://issues.apache.org/jira/browse/HBASE-15393) | Enable table replication command will fail when parent znode is not default in peer cluster | Major | Replication | +| [HBASE-15397](https://issues.apache.org/jira/browse/HBASE-15397) | Create bulk load replication znode(hfile-refs) in ZK replication queue by default | Major | Replication | +| [HBASE-15329](https://issues.apache.org/jira/browse/HBASE-15329) | Cross-Site Scripting: Reflected in table.jsp | Minor | security, UI | +| [HBASE-15128](https://issues.apache.org/jira/browse/HBASE-15128) | Disable region splits and merges switch in master | Major | . | +| [HBASE-15358](https://issues.apache.org/jira/browse/HBASE-15358) | canEnforceTimeLimitFromScope should use timeScope instead of sizeScope | Major | Scanners | +| [HBASE-15332](https://issues.apache.org/jira/browse/HBASE-15332) | Document how to take advantage of HDFS-6133 in HBase | Major | documentation | +| [HBASE-15319](https://issues.apache.org/jira/browse/HBASE-15319) | clearJmxCache does not take effect actually | Major | metrics | +| [HBASE-15247](https://issues.apache.org/jira/browse/HBASE-15247) | InclusiveStopFilter does not respect reverse Filter property | Major | Filters | +| [HBASE-15285](https://issues.apache.org/jira/browse/HBASE-15285) | Forward-port respect for isReturnResult from HBASE-15095 | Major | Client | +| [HBASE-15298](https://issues.apache.org/jira/browse/HBASE-15298) | Fix missing or wrong asciidoc anchors in the reference guide | Minor | documentation | +| [HBASE-15259](https://issues.apache.org/jira/browse/HBASE-15259) | WALEdits under replay will also be replicated | Minor | . | +| [HBASE-15251](https://issues.apache.org/jira/browse/HBASE-15251) | During a cluster restart, Hmaster thinks it is a failover by mistake | Major | master | +| [HBASE-15289](https://issues.apache.org/jira/browse/HBASE-15289) | Add details about how to get usage instructions for Import and Export utilities | Major | documentation | +| [HBASE-13883](https://issues.apache.org/jira/browse/HBASE-13883) | Fix Memstore Flush section in HBase book | Major | documentation | +| [HBASE-15250](https://issues.apache.org/jira/browse/HBASE-15250) | Fix links that are currently redirected from old URLs | Major | documentation, website | +| [HBASE-15279](https://issues.apache.org/jira/browse/HBASE-15279) | OrderedBytes.isEncodedValue does not check for int8 and int16 types | Major | . | +| [HBASE-15276](https://issues.apache.org/jira/browse/HBASE-15276) | TestFlushSnapshotFromClient hung | Major | . | +| [HBASE-15198](https://issues.apache.org/jira/browse/HBASE-15198) | RPC client not using Codec and CellBlock for puts by default | Critical | . | +| [HBASE-15122](https://issues.apache.org/jira/browse/HBASE-15122) | Servlets generate XSS\_REQUEST\_PARAMETER\_TO\_SERVLET\_WRITER findbugs warnings | Critical | UI | +| [HBASE-15079](https://issues.apache.org/jira/browse/HBASE-15079) | TestMultiParallel.validateLoadedData AssertionError: null | Major | Client, flakey, test | +| [HBASE-13839](https://issues.apache.org/jira/browse/HBASE-13839) | Fix AssgnmentManagerTmpl.jamon issues (coloring, content etc.) | Major | master, UI | +| [HBASE-15252](https://issues.apache.org/jira/browse/HBASE-15252) | Data loss when replaying wal if HDFS timeout | Blocker | wal | +| [HBASE-15221](https://issues.apache.org/jira/browse/HBASE-15221) | HTableMultiplexer improvements (stale region locations and resource leaks) | Critical | Client | +| [HBASE-15253](https://issues.apache.org/jira/browse/HBASE-15253) | Small bug in CellUtil.matchingRow(Cell, byte[]) | Minor | . | +| [HBASE-14192](https://issues.apache.org/jira/browse/HBASE-14192) | Fix REST Cluster constructor with String List | Minor | REST | +| [HBASE-15216](https://issues.apache.org/jira/browse/HBASE-15216) | Canary does not accept config params from command line | Major | canary | +| [HBASE-15231](https://issues.apache.org/jira/browse/HBASE-15231) | Make TableState.State private | Major | API | +| [HBASE-15214](https://issues.apache.org/jira/browse/HBASE-15214) | Valid mutate Ops fail with RPC Codec in use and region moves across | Critical | . | +| [HBASE-14770](https://issues.apache.org/jira/browse/HBASE-14770) | RowCounter argument input parse error | Minor | mapreduce | +| [HBASE-15209](https://issues.apache.org/jira/browse/HBASE-15209) | disable table in HBaseTestingUtility.truncateTable | Minor | . | +| [HBASE-15218](https://issues.apache.org/jira/browse/HBASE-15218) | On RS crash and replay of WAL, loosing all Tags in Cells | Blocker | Recovery, regionserver, security | +| [HBASE-15200](https://issues.apache.org/jira/browse/HBASE-15200) | ZooKeeper znode ACL checks should only compare the shortname | Minor | security | +| [HBASE-15206](https://issues.apache.org/jira/browse/HBASE-15206) | Flakey testSplitDaughtersNotInMeta test | Minor | flakey | +| [HBASE-15196](https://issues.apache.org/jira/browse/HBASE-15196) | HBASE-15158 Preamble 2 of 2:Add Increment tests | Major | . | +| [HBASE-15186](https://issues.apache.org/jira/browse/HBASE-15186) | HBASE-15158 Preamble 1 of 2: fix findbugs, add javadoc, change Region#getReadpoint to #getReadPoint, and some util | Major | . | +| [HBASE-15190](https://issues.apache.org/jira/browse/HBASE-15190) | Monkey dies when running on shared cluster (gives up when can't kill the other fellows processes) | Major | integration tests | +| [HBASE-15195](https://issues.apache.org/jira/browse/HBASE-15195) | Don't run findbugs on hbase-it; it has nothing in src/main/java | Major | findbugs | +| [HBASE-14810](https://issues.apache.org/jira/browse/HBASE-14810) | Update Hadoop support description to explain "not tested" vs "not supported" | Critical | documentation | +| [HBASE-15019](https://issues.apache.org/jira/browse/HBASE-15019) | Replication stuck when HDFS is restarted | Major | Replication, wal | +| [HBASE-15173](https://issues.apache.org/jira/browse/HBASE-15173) | Execute mergeRegions RPC call as the request user | Minor | . | +| [HBASE-15146](https://issues.apache.org/jira/browse/HBASE-15146) | Don't block on Reader threads queueing to a scheduler queue | Blocker | . | +| [HBASE-15145](https://issues.apache.org/jira/browse/HBASE-15145) | HBCK and Replication should authenticate to zookepeer using server principal | Major | . | +| [HBASE-15164](https://issues.apache.org/jira/browse/HBASE-15164) | Fix broken links found via LinkLint | Major | documentation | +| [HBASE-15132](https://issues.apache.org/jira/browse/HBASE-15132) | Master region merge RPC should authorize user request | Major | . | +| [HBASE-13082](https://issues.apache.org/jira/browse/HBASE-13082) | Coarsen StoreScanner locks to RegionScanner | Major | Performance, Scanners | +| [HBASE-15148](https://issues.apache.org/jira/browse/HBASE-15148) | Resolve IS2\_INCONSISTENT\_SYNC findbugs warning in AuthenticationTokenSecretManager | Major | . | +| [HBASE-15133](https://issues.apache.org/jira/browse/HBASE-15133) | Data loss after compaction when a row has more than Integer.MAX\_VALUE columns | Major | Compaction | +| [HBASE-15152](https://issues.apache.org/jira/browse/HBASE-15152) | Automatically include prefix-tree module in MR jobs if present | Major | mapreduce | +| [HBASE-15147](https://issues.apache.org/jira/browse/HBASE-15147) | Shell should use Admin.listTableNames() instead of Admin.listTables() | Major | . | +| [HBASE-15126](https://issues.apache.org/jira/browse/HBASE-15126) | HBaseFsck's checkRegionBoundaries function sets incorrect 'storesFirstKey' | Major | hbck | +| [HBASE-15139](https://issues.apache.org/jira/browse/HBASE-15139) | Connection manager doesn't pass client metrics to RpcClient | Major | Client, metrics | +| [HBASE-15098](https://issues.apache.org/jira/browse/HBASE-15098) | Normalizer switch in configuration is not used | Blocker | master | +| [HBASE-15101](https://issues.apache.org/jira/browse/HBASE-15101) | Leaked References to StoreFile.Reader after HBASE-13082 | Critical | HFile, io | +| [HBASE-15102](https://issues.apache.org/jira/browse/HBASE-15102) | HeapMemoryTuner can "overtune" memstore size and suddenly drop it into blocking zone | Critical | regionserver | +| [HBASE-14771](https://issues.apache.org/jira/browse/HBASE-14771) | RpcServer#getRemoteAddress always returns null | Minor | IPC/RPC | +| [HBASE-14512](https://issues.apache.org/jira/browse/HBASE-14512) | Cache UGI groups | Major | Performance, security | +| [HBASE-15104](https://issues.apache.org/jira/browse/HBASE-15104) | Occasional failures due to NotServingRegionException in IT tests | Major | integration tests | +| [HBASE-15117](https://issues.apache.org/jira/browse/HBASE-15117) | Resolve ICAST findbugs warnings in current codes | Minor | . | +| [HBASE-15085](https://issues.apache.org/jira/browse/HBASE-15085) | IllegalStateException was thrown when scanning on bulkloaded HFiles | Critical | . | +| [HBASE-15083](https://issues.apache.org/jira/browse/HBASE-15083) | Gets from Multiactions are not counted in metrics for gets. | Major | . | +| [HBASE-15052](https://issues.apache.org/jira/browse/HBASE-15052) | Use EnvironmentEdgeManager in ReplicationSource | Trivial | Replication | +| [HBASE-15057](https://issues.apache.org/jira/browse/HBASE-15057) | local-master-backup.sh doesn't start HMaster correctly | Major | shell | +| [HBASE-15065](https://issues.apache.org/jira/browse/HBASE-15065) | SimpleRegionNormalizer should return multiple normalization plans in one run | Major | . | +| [HBASE-14975](https://issues.apache.org/jira/browse/HBASE-14975) | Don't color the total RIT line yellow if it's zero | Major | UI | +| [HBASE-15027](https://issues.apache.org/jira/browse/HBASE-15027) | Refactor the way the CompactedHFileDischarger threads are created | Major | . | +| [HBASE-15070](https://issues.apache.org/jira/browse/HBASE-15070) | DistributedHBaseCluster#restoreRegionServers() starts new RS process on master server | Minor | integration tests | +| [HBASE-14867](https://issues.apache.org/jira/browse/HBASE-14867) | SimpleRegionNormalizer needs to have better heuristics to trigger merge operation | Major | master | +| [HBASE-14987](https://issues.apache.org/jira/browse/HBASE-14987) | Compaction marker whose region name doesn't match current region's needs to be handled | Major | . | +| [HBASE-15063](https://issues.apache.org/jira/browse/HBASE-15063) | Bug in MultiByteBuf#toBytes | Critical | io, Performance | +| [HBASE-15050](https://issues.apache.org/jira/browse/HBASE-15050) | Block Ref counting does not work in Region Split cases. | Critical | . | +| [HBASE-15011](https://issues.apache.org/jira/browse/HBASE-15011) | turn off the jdk8 javadoc linter. :( | Blocker | build, documentation | +| [HBASE-15043](https://issues.apache.org/jira/browse/HBASE-15043) | region\_status.rb broken with TypeError: no public constructors for Java::OrgApacheHadoopHbaseClient::HBaseAdmin | Major | scripts | +| [HBASE-15026](https://issues.apache.org/jira/browse/HBASE-15026) | The default value of "hbase.regions.slop" in hbase-default.xml is obsolete | Minor | Balancer | +| [HBASE-15035](https://issues.apache.org/jira/browse/HBASE-15035) | bulkloading hfiles with tags that require splits do not preserve tags | Blocker | HFile | +| [HBASE-15039](https://issues.apache.org/jira/browse/HBASE-15039) | HMaster and RegionServers should try to refresh token keys from zk when facing InvalidToken | Major | . | +| [HBASE-14940](https://issues.apache.org/jira/browse/HBASE-14940) | Make our unsafe based ops more safe | Major | . | +| [HBASE-14717](https://issues.apache.org/jira/browse/HBASE-14717) | enable\_table\_replication command should only create specified table for a peer cluster | Major | Replication | +| [HBASE-15032](https://issues.apache.org/jira/browse/HBASE-15032) | hbase shell scan filter string assumes UTF-8 encoding | Major | shell | +| [HBASE-15034](https://issues.apache.org/jira/browse/HBASE-15034) | IntegrationTestDDLMasterFailover does not clean created namespaces | Minor | integration tests | +| [HBASE-15030](https://issues.apache.org/jira/browse/HBASE-15030) | Deadlock in master TableNamespaceManager while running IntegrationTestDDLMasterFailover | Major | proc-v2 | +| [HBASE-15021](https://issues.apache.org/jira/browse/HBASE-15021) | hadoopqa doing false positives | Major | . | +| [HBASE-15028](https://issues.apache.org/jira/browse/HBASE-15028) | Minor fix on RegionGroupingProvider | Minor | wal | +| [HBASE-14977](https://issues.apache.org/jira/browse/HBASE-14977) | ChoreService.shutdown may result in ConcurrentModificationException | Minor | util | +| [HBASE-15014](https://issues.apache.org/jira/browse/HBASE-15014) | Fix filterCellByStore in WALsplitter is awful for performance | Critical | MTTR, Recovery, wal | +| [HBASE-15001](https://issues.apache.org/jira/browse/HBASE-15001) | Thread Safety issues in ReplicationSinkManager and HBaseInterClusterReplicationEndpoint | Blocker | Replication | +| [HBASE-14654](https://issues.apache.org/jira/browse/HBASE-14654) | Reenable TestMultiParallel#testActiveThreadsCount | Major | test | +| [HBASE-15022](https://issues.apache.org/jira/browse/HBASE-15022) | undefined method \`getZooKeeperClusterKey' for Java::OrgApacheHadoopHbaseZookeeper::ZKUtil:Class | Major | shell | +| [HBASE-14991](https://issues.apache.org/jira/browse/HBASE-14991) | Fix the feature warning in scala code | Minor | . | +| [HBASE-15015](https://issues.apache.org/jira/browse/HBASE-15015) | Checktyle plugin shouldn't check Jamon-generated Java classes | Minor | build | +| [HBASE-14822](https://issues.apache.org/jira/browse/HBASE-14822) | Renewing leases of scanners doesn't work | Major | . | +| [HBASE-13907](https://issues.apache.org/jira/browse/HBASE-13907) | Document how to deploy a coprocessor | Major | documentation | +| [HBASE-14990](https://issues.apache.org/jira/browse/HBASE-14990) | Tests in BaseTestHBaseFsck are run by its subclasses redundantly | Minor | test | +| [HBASE-14999](https://issues.apache.org/jira/browse/HBASE-14999) | Remove ref to org.mortbay.log.Log | Minor | dependencies | +| [HBASE-15000](https://issues.apache.org/jira/browse/HBASE-15000) | Fix javadoc warn in LoadIncrementalHFiles | Trivial | . | +| [HBASE-14974](https://issues.apache.org/jira/browse/HBASE-14974) | Total number of Regions in Transition number on UI incorrect | Trivial | UI | +| [HBASE-14952](https://issues.apache.org/jira/browse/HBASE-14952) | hbase-assembly source artifact has some incorrect modules | Blocker | build, dependencies | +| [HBASE-14807](https://issues.apache.org/jira/browse/HBASE-14807) | TestWALLockup is flakey | Major | flakey, test | +| [HBASE-14843](https://issues.apache.org/jira/browse/HBASE-14843) | TestWALProcedureStore.testLoad is flakey | Blocker | proc-v2 | +| [HBASE-14838](https://issues.apache.org/jira/browse/HBASE-14838) | Clarify that SimpleRegionNormalizer does not merge empty (\<1MB) regions | Trivial | documentation, regionserver | +| [HBASE-13976](https://issues.apache.org/jira/browse/HBASE-13976) | release manager list in ref guide is missing 0.94 line | Major | documentation | +| [HBASE-14968](https://issues.apache.org/jira/browse/HBASE-14968) | ConcurrentModificationException in region close resulting in the region staying in closing state | Major | Region Assignment, regionserver | +| [HBASE-14929](https://issues.apache.org/jira/browse/HBASE-14929) | There is a space missing from Table "foo" is not currently available. | Trivial | . | +| [HBASE-14936](https://issues.apache.org/jira/browse/HBASE-14936) | CombinedBlockCache should overwrite CacheStats#rollMetricsPeriod() | Major | BlockCache | +| [HBASE-14701](https://issues.apache.org/jira/browse/HBASE-14701) | Fix flakey Failed tests: TestMobFlushSnapshotFromClient\>TestFlushSnapshotFromClient.testSkipFlushTableSnapshot:199 null | Major | test | +| [HBASE-14953](https://issues.apache.org/jira/browse/HBASE-14953) | HBaseInterClusterReplicationEndpoint: Do not retry the whole batch of edits in case of RejectedExecutionException | Critical | Replication | +| [HBASE-14960](https://issues.apache.org/jira/browse/HBASE-14960) | Fallback to using default RPCControllerFactory if class cannot be loaded | Major | . | +| [HBASE-14769](https://issues.apache.org/jira/browse/HBASE-14769) | Remove unused functions and duplicate javadocs from HBaseAdmin | Major | . | +| [HBASE-14901](https://issues.apache.org/jira/browse/HBASE-14901) | There is duplicated code to create/manage encryption keys | Minor | encryption | +| [HBASE-14941](https://issues.apache.org/jira/browse/HBASE-14941) | locate\_region shell command | Trivial | shell | +| [HBASE-14942](https://issues.apache.org/jira/browse/HBASE-14942) | Allow turning off BoundedByteBufferPool | Major | . | +| [HBASE-14954](https://issues.apache.org/jira/browse/HBASE-14954) | IllegalArgumentException was thrown when doing online configuration change in CompactSplitThread | Major | Compaction, regionserver | +| [HBASE-14804](https://issues.apache.org/jira/browse/HBASE-14804) | HBase shell's create table command ignores 'NORMALIZATION\_ENABLED' attribute | Minor | shell | +| [HBASE-14917](https://issues.apache.org/jira/browse/HBASE-14917) | Log in console if individual tests in test-patch.sh fail or pass | Minor | . | +| [HBASE-14930](https://issues.apache.org/jira/browse/HBASE-14930) | check\_compatibility.sh needs smarter exit codes | Major | . | +| [HBASE-14923](https://issues.apache.org/jira/browse/HBASE-14923) | VerifyReplication should not mask the exception during result comparison | Minor | tooling | +| [HBASE-14922](https://issues.apache.org/jira/browse/HBASE-14922) | Delayed flush doesn't work causing flush storms. | Major | regionserver | +| [HBASE-14926](https://issues.apache.org/jira/browse/HBASE-14926) | Hung ThriftServer; no timeout on read from client; if client crashes, worker thread gets stuck reading | Major | Thrift | +| [HBASE-14928](https://issues.apache.org/jira/browse/HBASE-14928) | Start row should be set for query through HBase REST gateway involving globbing option | Major | REST | +| [HBASE-14907](https://issues.apache.org/jira/browse/HBASE-14907) | NPE of MobUtils.hasMobColumns in Build failed in Jenkins: HBase-Trunk\_matrix » latest1.8,Hadoop #513 | Major | mob | +| [HBASE-14904](https://issues.apache.org/jira/browse/HBASE-14904) | Mark Base[En\|De]coder LimitedPrivate and fix binary compat issue | Major | . | +| [HBASE-13857](https://issues.apache.org/jira/browse/HBASE-13857) | Slow WAL Append count in ServerMetricsTmpl.jamon is hardcoded to zero | Major | regionserver, UI | +| [HBASE-14905](https://issues.apache.org/jira/browse/HBASE-14905) | VerifyReplication does not honour versions option | Major | tooling | +| [HBASE-14541](https://issues.apache.org/jira/browse/HBASE-14541) | TestHFileOutputFormat.testMRIncrementalLoadWithSplit failed due to too many splits and few retries | Major | HFile, test | +| [HBASE-14462](https://issues.apache.org/jira/browse/HBASE-14462) | rolling\_restart.sh --master-only throws "line 142: test: 0: unary operator expected" | Major | . | +| [HBASE-14896](https://issues.apache.org/jira/browse/HBASE-14896) | Resolve Javadoc warnings in WALKey and RegionMover | Minor | . | +| [HBASE-14531](https://issues.apache.org/jira/browse/HBASE-14531) | graceful\_stop.sh "if [ "$local" ]" condition unexpected behaviour | Major | scripts | +| [HBASE-14890](https://issues.apache.org/jira/browse/HBASE-14890) | Fix javadoc checkstyle errors | Major | . | +| [HBASE-14894](https://issues.apache.org/jira/browse/HBASE-14894) | Fix misspellings of threshold in log4j.properties files for tests | Trivial | . | +| [HBASE-14523](https://issues.apache.org/jira/browse/HBASE-14523) | rolling-restart.sh --graceful will start regionserver process on master node | Major | scripts | +| [HBASE-14893](https://issues.apache.org/jira/browse/HBASE-14893) | Race between mutation on region and region closing operation leads to NotServingRegionException | Major | . | +| [HBASE-14664](https://issues.apache.org/jira/browse/HBASE-14664) | Master failover issue: Backup master is unable to start if active master is killed and started in short time interval | Critical | master | +| [HBASE-14777](https://issues.apache.org/jira/browse/HBASE-14777) | Fix Inter Cluster Replication Future ordering issues | Critical | Replication | +| [HBASE-14885](https://issues.apache.org/jira/browse/HBASE-14885) | NullPointerException in HMaster#normalizeRegions() due to missing TableDescriptor | Major | master | +| [HBASE-14689](https://issues.apache.org/jira/browse/HBASE-14689) | Addendum and unit test for HBASE-13471 | Major | . | +| [HBASE-14463](https://issues.apache.org/jira/browse/HBASE-14463) | Severe performance downgrade when parallel reading a single key from BucketCache | Major | . | +| [HBASE-14861](https://issues.apache.org/jira/browse/HBASE-14861) | HBASE\_ZNODE\_FILE on master server is overwritten by regionserver process in case of master-rs collocation | Major | Operability | +| [HBASE-14825](https://issues.apache.org/jira/browse/HBASE-14825) | HBase Ref Guide corrections of typos/misspellings | Minor | documentation | +| [HBASE-14737](https://issues.apache.org/jira/browse/HBASE-14737) | Clear cachedMaxVersions when HColumnDescriptor#setValue(VERSIONS, value) is called | Major | . | +| [HBASE-14799](https://issues.apache.org/jira/browse/HBASE-14799) | Commons-collections object deserialization remote command execution vulnerability | Critical | dependencies, security | +| [HBASE-14840](https://issues.apache.org/jira/browse/HBASE-14840) | Sink cluster reports data replication request as success though the data is not replicated | Major | Replication | +| [HBASE-14712](https://issues.apache.org/jira/browse/HBASE-14712) | MasterProcWALs never clean up | Blocker | proc-v2 | +| [HBASE-14761](https://issues.apache.org/jira/browse/HBASE-14761) | Deletes with and without visibility expression do not delete the matching mutation | Major | security | +| [HBASE-14782](https://issues.apache.org/jira/browse/HBASE-14782) | FuzzyRowFilter skips valid rows | Major | Filters | +| [HBASE-14824](https://issues.apache.org/jira/browse/HBASE-14824) | HBaseAdmin.mergeRegions should recognize both full region names and encoded region names | Minor | Admin | +| [HBASE-14815](https://issues.apache.org/jira/browse/HBASE-14815) | TestMobExportSnapshot.testExportFailure timeout occasionally | Major | . | +| [HBASE-14823](https://issues.apache.org/jira/browse/HBASE-14823) | HBase Ref Guide Refactoring | Major | documentation | +| [HBASE-14812](https://issues.apache.org/jira/browse/HBASE-14812) | Fix ResultBoundedCompletionService deadlock | Major | Client, Thrift | +| [HBASE-14793](https://issues.apache.org/jira/browse/HBASE-14793) | Allow limiting size of block into L1 block cache. | Major | BlockCache | +| [HBASE-14806](https://issues.apache.org/jira/browse/HBASE-14806) | Missing sources.jar for several modules when building HBase | Major | pom | +| [HBASE-14809](https://issues.apache.org/jira/browse/HBASE-14809) | Grant / revoke Namespace admin permission to group | Major | security | +| [HBASE-14802](https://issues.apache.org/jira/browse/HBASE-14802) | Replaying server crash recovery procedure after a failover causes incorrect handling of deadservers | Major | master | +| [HBASE-13982](https://issues.apache.org/jira/browse/HBASE-13982) | Add info for visibility labels/cell TTLs to ImportTsv | Major | mapreduce | +| [HBASE-14797](https://issues.apache.org/jira/browse/HBASE-14797) | Last round of CSS fix-ups | Major | website | +| [HBASE-14788](https://issues.apache.org/jira/browse/HBASE-14788) | Splitting a region does not support the hbase.rs.evictblocksonclose config when closing source region | Major | regionserver | +| [HBASE-14778](https://issues.apache.org/jira/browse/HBASE-14778) | Make block cache hit percentages not integer in the metrics system | Major | BlockCache, metrics | +| [HBASE-14784](https://issues.apache.org/jira/browse/HBASE-14784) | Port conflict is not resolved in HBaseTestingUtility.randomFreePort() | Minor | test | +| [HBASE-14787](https://issues.apache.org/jira/browse/HBASE-14787) | Remove obsolete ConnectionImplementation.refCount | Trivial | . | +| [HBASE-14781](https://issues.apache.org/jira/browse/HBASE-14781) | Turn per cf flushing on for ITBLL by default | Major | integration tests | +| [HBASE-14774](https://issues.apache.org/jira/browse/HBASE-14774) | Raise the font size on high-DPI small-screen devices like iphone 6+ | Major | website | +| [HBASE-14767](https://issues.apache.org/jira/browse/HBASE-14767) | Remove deprecated functions from HBaseAdmin | Major | . | +| [HBASE-14759](https://issues.apache.org/jira/browse/HBASE-14759) | Avoid using Math.abs when selecting SyncRunner in FSHLog | Major | wal | +| [HBASE-14632](https://issues.apache.org/jira/browse/HBASE-14632) | Region server aborts due to unguarded dereference of Reader | Major | regionserver | +| [HBASE-14706](https://issues.apache.org/jira/browse/HBASE-14706) | RegionLocationFinder should return multiple servernames by top host | Major | Balancer | +| [HBASE-14755](https://issues.apache.org/jira/browse/HBASE-14755) | Fix some broken links and HTML problems | Major | documentation | +| [HBASE-14773](https://issues.apache.org/jira/browse/HBASE-14773) | Fix HBase shell tests are skipped when skipping server tests. | Major | test | +| [HBASE-14768](https://issues.apache.org/jira/browse/HBASE-14768) | bin/graceful\_stop.sh logs nothing as a balancer state to be stored | Trivial | scripts | +| [HBASE-14723](https://issues.apache.org/jira/browse/HBASE-14723) | Fix IT tests split too many times | Major | integration tests | +| [HBASE-14733](https://issues.apache.org/jira/browse/HBASE-14733) | Minor typo in alter\_namespace.rb | Trivial | shell | +| [HBASE-14754](https://issues.apache.org/jira/browse/HBASE-14754) | TestFastFailWithoutTestUtil failing on trunk now in #testPreemptiveFastFailException50Times | Major | flakey, test | +| [HBASE-14751](https://issues.apache.org/jira/browse/HBASE-14751) | Book seems to be broken | Major | . | +| [HBASE-14742](https://issues.apache.org/jira/browse/HBASE-14742) | TestHeapMemoryManager is flakey | Major | test | +| [HBASE-14739](https://issues.apache.org/jira/browse/HBASE-14739) | Fix broken link to Javadoc that is suppressed because it is generated code | Trivial | documentation | +| [HBASE-14532](https://issues.apache.org/jira/browse/HBASE-14532) | [book] dfs.client.read.shortcircuit is referenced as hbase-site.xml config and not described in section 7 | Minor | documentation | +| [HBASE-14711](https://issues.apache.org/jira/browse/HBASE-14711) | Remove or annotated deprecated methods in HRegionInfo | Major | hbase | +| [HBASE-14557](https://issues.apache.org/jira/browse/HBASE-14557) | MapReduce WALPlayer issue with NoTagsKeyValue | Blocker | tooling | +| [HBASE-14650](https://issues.apache.org/jira/browse/HBASE-14650) | Reenable TestNamespaceAuditor | Major | . | +| [HBASE-14660](https://issues.apache.org/jira/browse/HBASE-14660) | AssertionError found when using offheap BucketCache with assertion enabled | Major | . | +| [HBASE-14695](https://issues.apache.org/jira/browse/HBASE-14695) | Fix some easy HTML warnings | Minor | documentation | +| [HBASE-14425](https://issues.apache.org/jira/browse/HBASE-14425) | In Secure Zookeeper cluster superuser will not have sufficient permission if multiple values are configured in "hbase.superuser" | Major | security, Zookeeper | +| [HBASE-14674](https://issues.apache.org/jira/browse/HBASE-14674) | Rpc handler / task monitoring seems to be broken after 0.98 | Major | . | +| [HBASE-14705](https://issues.apache.org/jira/browse/HBASE-14705) | Javadoc for KeyValue constructor is not correct. | Minor | . | +| [HBASE-14680](https://issues.apache.org/jira/browse/HBASE-14680) | Two configs for snapshot timeout and better defaults | Major | snapshots | +| [HBASE-14349](https://issues.apache.org/jira/browse/HBASE-14349) | pre-commit zombie finder is overly broad | Critical | build | +| [HBASE-14694](https://issues.apache.org/jira/browse/HBASE-14694) | Scan copy constructor doesn't handle allowPartialResults | Major | Client | +| [HBASE-14257](https://issues.apache.org/jira/browse/HBASE-14257) | Periodic flusher only handles hbase:meta, not other system tables | Major | regionserver | +| [HBASE-14682](https://issues.apache.org/jira/browse/HBASE-14682) | CM restore functionality for regionservers is broken | Major | integration tests | +| [HBASE-14283](https://issues.apache.org/jira/browse/HBASE-14283) | Reverse scan doesn’t work with HFile inline index/bloom blocks | Major | . | +| [HBASE-13318](https://issues.apache.org/jira/browse/HBASE-13318) | RpcServer.getListenerAddress should handle when the accept channel is closed | Minor | . | +| [HBASE-14661](https://issues.apache.org/jira/browse/HBASE-14661) | RegionServer link is not opening, in HBase Table page. | Minor | UI | +| [HBASE-14690](https://issues.apache.org/jira/browse/HBASE-14690) | Fix css so there's no left/right scroll bar | Major | UI | +| [HBASE-14624](https://issues.apache.org/jira/browse/HBASE-14624) | BucketCache.freeBlock is too expensive | Major | BlockCache | +| [HBASE-14676](https://issues.apache.org/jira/browse/HBASE-14676) | HBaseTestCase clean out: Purge Incommon Interface and Table and Region implementations | Major | . | +| [HBASE-14343](https://issues.apache.org/jira/browse/HBASE-14343) | Fix debug message in SimpleRegionNormalizer for small regions | Trivial | regionserver | +| [HBASE-14681](https://issues.apache.org/jira/browse/HBASE-14681) | Upgrade Checkstyle plugin to 2.16 | Major | build | +| [HBASE-14667](https://issues.apache.org/jira/browse/HBASE-14667) | HBaseFsck constructors have diverged | Minor | hbck | +| [HBASE-14658](https://issues.apache.org/jira/browse/HBASE-14658) | Allow loading a MonkeyFactory by class name | Major | integration tests, test | +| [HBASE-14603](https://issues.apache.org/jira/browse/HBASE-14603) | Lots of work on the POM to enhance Javadocs, Xrefs | Major | documentation | +| [HBASE-14326](https://issues.apache.org/jira/browse/HBASE-14326) | HBase book: fix definition of max min size to compact | Major | documentation | +| [HBASE-14663](https://issues.apache.org/jira/browse/HBASE-14663) | HStore::close does not honor config hbase.rs.evictblocksonclose | Minor | BlockCache, regionserver | +| [HBASE-14427](https://issues.apache.org/jira/browse/HBASE-14427) | Fix 'should' assertions in TestFastFail | Minor | test | +| [HBASE-14633](https://issues.apache.org/jira/browse/HBASE-14633) | Try fluid width UI | Major | UI | +| [HBASE-14366](https://issues.apache.org/jira/browse/HBASE-14366) | NPE in case visibility expression is not present in labels table during importtsv run | Minor | . | +| [HBASE-14604](https://issues.apache.org/jira/browse/HBASE-14604) | Improve MoveCostFunction in StochasticLoadBalancer | Major | Balancer | +| [HBASE-14606](https://issues.apache.org/jira/browse/HBASE-14606) | TestSecureLoadIncrementalHFiles tests timed out in trunk build on apache | Major | test | +| [HBASE-12558](https://issues.apache.org/jira/browse/HBASE-12558) | Disable TestHCM.testClusterStatus Unexpected exception, expected\ but was\ | Major | test | +| [HBASE-14458](https://issues.apache.org/jira/browse/HBASE-14458) | AsyncRpcClient#createRpcChannel() should check and remove dead channel before creating new one to same server | Critical | IPC/RPC | +| [HBASE-14634](https://issues.apache.org/jira/browse/HBASE-14634) | Disable flakey TestSnapshotCloneIndependence.testOnlineSnapshotDeleteIndependent | Major | test | +| [HBASE-14621](https://issues.apache.org/jira/browse/HBASE-14621) | ReplicationLogCleaner gets stuck when a regionserver crashes | Critical | Replication | +| [HBASE-14625](https://issues.apache.org/jira/browse/HBASE-14625) | Chaos Monkey should shut down faster | Major | integration tests, test | +| [HBASE-14597](https://issues.apache.org/jira/browse/HBASE-14597) | Fix Groups cache in multi-threaded env | Major | . | +| [HBASE-14474](https://issues.apache.org/jira/browse/HBASE-14474) | DeadLock in RpcClientImpl.Connection.close() | Blocker | IPC/RPC | +| [HBASE-14594](https://issues.apache.org/jira/browse/HBASE-14594) | Use new DNS API introduced in HADOOP-12437 | Major | util | +| [HBASE-14521](https://issues.apache.org/jira/browse/HBASE-14521) | Unify the semantic of hbase.client.retries.number | Major | . | +| [HBASE-14608](https://issues.apache.org/jira/browse/HBASE-14608) | testWalRollOnLowReplication has some risk to assert failed after HBASE-14600 | Major | test | +| [HBASE-14598](https://issues.apache.org/jira/browse/HBASE-14598) | ByteBufferOutputStream grows its HeapByteBuffer beyond JVM limitations | Major | Client, io | +| [HBASE-14591](https://issues.apache.org/jira/browse/HBASE-14591) | Region with reference hfile may split after a forced split in IncreasingToUpperBoundRegionSplitPolicy | Critical | regionserver | +| [HBASE-14599](https://issues.apache.org/jira/browse/HBASE-14599) | Modify site config to use protocol-relative URLs for CSS/JS | Blocker | documentation | +| [HBASE-14501](https://issues.apache.org/jira/browse/HBASE-14501) | NPE in replication when HDFS transparent encryption is enabled. | Critical | Replication, security | +| [HBASE-14211](https://issues.apache.org/jira/browse/HBASE-14211) | Add more rigorous integration tests of splits | Major | integration tests, test | +| [HBASE-14592](https://issues.apache.org/jira/browse/HBASE-14592) | BatchRestartRsAction always restarts 0 RS when running SlowDeterministicMonkey | Major | integration tests | +| [HBASE-14577](https://issues.apache.org/jira/browse/HBASE-14577) | HBase shell help for scan and returning a column family has a typo | Trivial | shell | +| [HBASE-14578](https://issues.apache.org/jira/browse/HBASE-14578) | URISyntaxException during snapshot restore for table with user defined namespace | Major | snapshots | +| [HBASE-14581](https://issues.apache.org/jira/browse/HBASE-14581) | Znode cleanup throws auth exception in secure mode | Major | security, Zookeeper | +| [HBASE-13858](https://issues.apache.org/jira/browse/HBASE-13858) | RS/MasterDumpServlet dumps threads before its “Stacks” header | Trivial | master, regionserver, UI | +| [HBASE-14525](https://issues.apache.org/jira/browse/HBASE-14525) | Append and increment operation throws NullPointerException on non-existing column families. | Minor | shell | +| [HBASE-14497](https://issues.apache.org/jira/browse/HBASE-14497) | Reverse Scan threw StackOverflow caused by readPt checking | Major | . | +| [HBASE-14346](https://issues.apache.org/jira/browse/HBASE-14346) | Typo in FamilyFilter | Trivial | documentation | +| [HBASE-12983](https://issues.apache.org/jira/browse/HBASE-12983) | HBase book mentions hadoop.ssl.enabled when it should be hbase.ssl.enabled | Major | documentation | +| [HBASE-12615](https://issues.apache.org/jira/browse/HBASE-12615) | Document GC conserving guidelines for contributors | Major | documentation | +| [HBASE-14555](https://issues.apache.org/jira/browse/HBASE-14555) | Deadlock in MVCC branch-1.2 toString() | Critical | regionserver | +| [HBASE-14347](https://issues.apache.org/jira/browse/HBASE-14347) | Add a switch to DynamicClassLoader to disable it | Major | Client, defaults, regionserver | +| [HBASE-14544](https://issues.apache.org/jira/browse/HBASE-14544) | Allow HConnectionImpl to not refresh the dns on errors | Major | Client | +| [HBASE-14367](https://issues.apache.org/jira/browse/HBASE-14367) | Add normalization support to shell | Major | Balancer, shell | +| [HBASE-14545](https://issues.apache.org/jira/browse/HBASE-14545) | TestMasterFailover often times out | Major | test | +| [HBASE-14499](https://issues.apache.org/jira/browse/HBASE-14499) | Master coprocessors shutdown will not happen on master abort | Major | master | +| [HBASE-13770](https://issues.apache.org/jira/browse/HBASE-13770) | Programmatic JAAS configuration option for secure zookeeper may be broken | Major | Operability, security | +| [HBASE-14292](https://issues.apache.org/jira/browse/HBASE-14292) | Call Me Maybe HBase links haved moved | Minor | documentation | +| [HBASE-13744](https://issues.apache.org/jira/browse/HBASE-13744) | TestCorruptedRegionStoreFile is flaky | Major | test | +| [HBASE-13143](https://issues.apache.org/jira/browse/HBASE-13143) | TestCacheOnWrite is flaky and needs a diet | Critical | test | +| [HBASE-14475](https://issues.apache.org/jira/browse/HBASE-14475) | Region split requests are always audited with "hbase" user rather than request user | Major | regionserver, security | +| [HBASE-14494](https://issues.apache.org/jira/browse/HBASE-14494) | Wrong usage messages on shell commands | Minor | shell | +| [HBASE-14518](https://issues.apache.org/jira/browse/HBASE-14518) | Give TestScanEarlyTermination the same treatment as 'HBASE-14378 Get TestAccessController\* passing again...' -- up priority handlers | Major | test | +| [HBASE-14394](https://issues.apache.org/jira/browse/HBASE-14394) | Properly close the connection after reading records from table. | Minor | mapreduce | +| [HBASE-14510](https://issues.apache.org/jira/browse/HBASE-14510) | Can not set coprocessor from Shell after HBASE-14224 | Major | Coprocessors, shell | +| [HBASE-14362](https://issues.apache.org/jira/browse/HBASE-14362) | org.apache.hadoop.hbase.master.procedure.TestWALProcedureStoreOnHDFS is super duper flaky | Critical | test | +| [HBASE-14473](https://issues.apache.org/jira/browse/HBASE-14473) | Compute region locality in parallel | Major | Balancer | +| [HBASE-14437](https://issues.apache.org/jira/browse/HBASE-14437) | ArithmeticException in ReplicationInterClusterEndpoint | Minor | Replication | +| [HBASE-14500](https://issues.apache.org/jira/browse/HBASE-14500) | Remove load of deprecated MOB ruby scripts after HBASE-14227 | Major | shell | +| [HBASE-14489](https://issues.apache.org/jira/browse/HBASE-14489) | postScannerFilterRow consumes a lot of CPU | Major | Coprocessors, Performance | +| [HBASE-14370](https://issues.apache.org/jira/browse/HBASE-14370) | Use separate thread for calling ZKPermissionWatcher#refreshNodes() | Major | . | +| [HBASE-14492](https://issues.apache.org/jira/browse/HBASE-14492) | Increase REST server header buffer size from 8k to 64k | Major | REST | +| [HBASE-14471](https://issues.apache.org/jira/browse/HBASE-14471) | Thrift - HTTP Error 413 full HEAD if using kerberos authentication | Major | Thrift | +| [HBASE-14469](https://issues.apache.org/jira/browse/HBASE-14469) | Fix some comment, validation and logging around memstore lower limit configuration | Minor | . | +| [HBASE-14486](https://issues.apache.org/jira/browse/HBASE-14486) | Disable TestRegionPlacement, a flakey test for an unfinished feature | Major | test | +| [HBASE-13324](https://issues.apache.org/jira/browse/HBASE-13324) | o.a.h.h.Coprocessor should be LimitedPrivate("Coprocessor") | Minor | API | +| [HBASE-14445](https://issues.apache.org/jira/browse/HBASE-14445) | ExportSnapshot does not honor -chmod option | Major | snapshots | +| [HBASE-14338](https://issues.apache.org/jira/browse/HBASE-14338) | License notification misspells 'Asciidoctor' | Minor | . | +| [HBASE-14280](https://issues.apache.org/jira/browse/HBASE-14280) | Bulk Upload from HA cluster to remote HA hbase cluster fails | Minor | hadoop2, regionserver | +| [HBASE-14431](https://issues.apache.org/jira/browse/HBASE-14431) | AsyncRpcClient#removeConnection() never removes connection from connections pool if server fails | Critical | IPC/RPC | +| [HBASE-14449](https://issues.apache.org/jira/browse/HBASE-14449) | Rewrite deadlock prevention for concurrent connection close | Major | master, metrics | +| [HBASE-13250](https://issues.apache.org/jira/browse/HBASE-13250) | chown of ExportSnapshot does not cover all path and files | Critical | snapshots | +| [HBASE-14411](https://issues.apache.org/jira/browse/HBASE-14411) | Fix unit test failures when using multiwal as default WAL provider | Major | . | +| [HBASE-14429](https://issues.apache.org/jira/browse/HBASE-14429) | Checkstyle report is broken | Minor | scripts | +| [HBASE-14400](https://issues.apache.org/jira/browse/HBASE-14400) | Fix HBase RPC protection documentation | Critical | encryption, IPC/RPC, security | +| [HBASE-14145](https://issues.apache.org/jira/browse/HBASE-14145) | Allow the Canary in regionserver mode to try all regions on the server, not just one | Major | canary, util | +| [HBASE-14380](https://issues.apache.org/jira/browse/HBASE-14380) | Correct data gets skipped along with bad data in importTsv bulk load thru TsvImporterTextMapper | Major | mapreduce, tooling | +| [HBASE-14307](https://issues.apache.org/jira/browse/HBASE-14307) | Incorrect use of positional read api in HFileBlock | Major | io | +| [HBASE-14392](https://issues.apache.org/jira/browse/HBASE-14392) | [tests] TestLogRollingNoCluster fails on master from time to time | Major | test | +| [HBASE-14382](https://issues.apache.org/jira/browse/HBASE-14382) | TestInterfaceAudienceAnnotations should hadoop-compt module resources | Minor | test | +| [HBASE-14385](https://issues.apache.org/jira/browse/HBASE-14385) | Close the sockets that is missing in connection closure. | Minor | Client | +| [HBASE-14393](https://issues.apache.org/jira/browse/HBASE-14393) | Have TestHFileEncryption clean up after itself so it don't go all zombie on us | Major | test | +| [HBASE-14384](https://issues.apache.org/jira/browse/HBASE-14384) | Trying to run canary locally with -regionserver option causes exception | Major | canary | +| [HBASE-14317](https://issues.apache.org/jira/browse/HBASE-14317) | Stuck FSHLog: bad disk (HDFS-8960) and can't roll WAL | Blocker | wal | +| [HBASE-14327](https://issues.apache.org/jira/browse/HBASE-14327) | TestIOFencing#testFencingAroundCompactionAfterWALSync is flaky | Critical | test | +| [HBASE-14359](https://issues.apache.org/jira/browse/HBASE-14359) | HTable#close will hang forever if unchecked error/exception thrown in AsyncProcess#sendMultiAction | Major | Client | +| [HBASE-14229](https://issues.apache.org/jira/browse/HBASE-14229) | Flushing canceled by coprocessor still leads to memstoreSize set down | Major | regionserver | +| [HBASE-14337](https://issues.apache.org/jira/browse/HBASE-14337) | build error on master | Major | . | +| [HBASE-14354](https://issues.apache.org/jira/browse/HBASE-14354) | Minor improvements for usage of the mlock agent | Trivial | hbase, regionserver | +| [HBASE-13221](https://issues.apache.org/jira/browse/HBASE-13221) | HDFS Transparent Encryption breaks WAL writing in Hadoop 2.6.0 | Critical | documentation, wal | +| [HBASE-14258](https://issues.apache.org/jira/browse/HBASE-14258) | Make region\_mover.rb script case insensitive with regard to hostname | Minor | . | +| [HBASE-14315](https://issues.apache.org/jira/browse/HBASE-14315) | Save one call to KeyValueHeap.peek per row | Major | . | +| [HBASE-14313](https://issues.apache.org/jira/browse/HBASE-14313) | After a Connection sees ConnectionClosingException it never recovers | Critical | Client | +| [HBASE-13339](https://issues.apache.org/jira/browse/HBASE-13339) | Update default Hadoop version to latest for master | Blocker | build | +| [HBASE-14269](https://issues.apache.org/jira/browse/HBASE-14269) | FuzzyRowFilter omits certain rows when multiple fuzzy keys exist | Major | Filters | +| [HBASE-14302](https://issues.apache.org/jira/browse/HBASE-14302) | TableSnapshotInputFormat should not create back references when restoring snapshot | Major | . | +| [HBASE-14224](https://issues.apache.org/jira/browse/HBASE-14224) | Fix coprocessor handling of duplicate classes | Critical | Coprocessors | +| [HBASE-13480](https://issues.apache.org/jira/browse/HBASE-13480) | ShortCircuitConnection doesn't short-circuit all calls as expected | Critical | Client | +| [HBASE-14273](https://issues.apache.org/jira/browse/HBASE-14273) | Rename MVCC to MVCC: From MultiVersionConsistencyControl to MultiVersionConcurrencyControl | Major | regionserver | +| [HBASE-14291](https://issues.apache.org/jira/browse/HBASE-14291) | NPE On StochasticLoadBalancer Balance Involving RS With No Regions | Minor | Balancer | +| [HBASE-14250](https://issues.apache.org/jira/browse/HBASE-14250) | branch-1.1 hbase-server test-jar has incorrect LICENSE | Blocker | build | +| [HBASE-14251](https://issues.apache.org/jira/browse/HBASE-14251) | javadoc jars use LICENSE/NOTICE from primary artifact | Blocker | build | +| [HBASE-14249](https://issues.apache.org/jira/browse/HBASE-14249) | shaded jar modules create spurious source and test jars with incorrect LICENSE/NOTICE info | Major | build | +| [HBASE-14243](https://issues.apache.org/jira/browse/HBASE-14243) | Incorrect NOTICE file in hbase-it test-jar | Blocker | build | +| [HBASE-14234](https://issues.apache.org/jira/browse/HBASE-14234) | Procedure-V2: Exception encountered in WALProcedureStore#rollWriter() should be properly handled | Minor | proc-v2 | +| [HBASE-14241](https://issues.apache.org/jira/browse/HBASE-14241) | Fix deadlock during cluster shutdown due to concurrent connection close | Critical | master, metrics | +| [HBASE-14228](https://issues.apache.org/jira/browse/HBASE-14228) | Close BufferedMutator and connection in MultiTableOutputFormat | Minor | mapreduce | +| [HBASE-14166](https://issues.apache.org/jira/browse/HBASE-14166) | Per-Region metrics can be stale | Major | metrics | +| [HBASE-10844](https://issues.apache.org/jira/browse/HBASE-10844) | Coprocessor failure during batchmutation leaves the memstore datastructs in an inconsistent state | Major | regionserver | +| [HBASE-13966](https://issues.apache.org/jira/browse/HBASE-13966) | Limit column width in table.jsp | Minor | Operability, UI | +| [HBASE-14219](https://issues.apache.org/jira/browse/HBASE-14219) | src tgz no longer builds after HBASE-14085 | Blocker | build | +| [HBASE-14214](https://issues.apache.org/jira/browse/HBASE-14214) | list\_labels shouldn't raise ArgumentError if no labels are defined | Minor | . | +| [HBASE-14054](https://issues.apache.org/jira/browse/HBASE-14054) | Acknowledged writes may get lost if regionserver clock is set backwards | Major | regionserver | +| [HBASE-14098](https://issues.apache.org/jira/browse/HBASE-14098) | Allow dropping caches behind compactions | Major | Compaction, hadoop2, HFile | +| [HBASE-14196](https://issues.apache.org/jira/browse/HBASE-14196) | Thrift server idle connection timeout issue | Major | Thrift | +| [HBASE-14209](https://issues.apache.org/jira/browse/HBASE-14209) | TestShell visibility tests failing | Major | security, shell | +| [HBASE-14201](https://issues.apache.org/jira/browse/HBASE-14201) | hbck should not take a lock unless fixing errors | Major | hbck, util | +| [HBASE-13889](https://issues.apache.org/jira/browse/HBASE-13889) | Fix hbase-shaded-client artifact so it works on hbase-downstreamer | Critical | Client | +| [HBASE-14208](https://issues.apache.org/jira/browse/HBASE-14208) | Remove yarn dependencies on -common and -client | Major | build, Client | +| [HBASE-14206](https://issues.apache.org/jira/browse/HBASE-14206) | MultiRowRangeFilter returns records whose rowKeys are out of allowed ranges | Critical | Filters | +| [HBASE-13062](https://issues.apache.org/jira/browse/HBASE-13062) | Add documentation coverage for configuring dns server with thrift and rest gateways | Minor | documentation | +| [HBASE-5878](https://issues.apache.org/jira/browse/HBASE-5878) | Use getVisibleLength public api from HdfsDataInputStream from Hadoop-2. | Major | wal | +| [HBASE-14092](https://issues.apache.org/jira/browse/HBASE-14092) | hbck should run without locks by default and only disable the balancer when necessary | Major | hbck, util | +| [HBASE-13924](https://issues.apache.org/jira/browse/HBASE-13924) | Description for hbase.dynamic.jars.dir is wrong | Major | . | +| [HBASE-12865](https://issues.apache.org/jira/browse/HBASE-12865) | WALs may be deleted before they are replicated to peers | Critical | Replication | +| [HBASE-13825](https://issues.apache.org/jira/browse/HBASE-13825) | Use ProtobufUtil#mergeFrom and ProtobufUtil#mergeDelimitedFrom in place of builder methods of same name | Major | util | +| [HBASE-13865](https://issues.apache.org/jira/browse/HBASE-13865) | Increase the default value for hbase.hregion.memstore.block.multipler from 2 to 4 (part 2) | Trivial | regionserver | +| [HBASE-14178](https://issues.apache.org/jira/browse/HBASE-14178) | regionserver blocks because of waiting for offsetLock | Major | regionserver | +| [HBASE-14183](https://issues.apache.org/jira/browse/HBASE-14183) | [Shell] Scanning hbase meta table is failing in master branch | Major | shell | +| [HBASE-14021](https://issues.apache.org/jira/browse/HBASE-14021) | Quota table has a wrong description on the UI | Minor | UI | +| [HBASE-14185](https://issues.apache.org/jira/browse/HBASE-14185) | Incorrect region names logged by MemStoreFlusher | Minor | regionserver | +| [HBASE-13864](https://issues.apache.org/jira/browse/HBASE-13864) | HColumnDescriptor should parse the output from master and from describe for TTL | Major | shell | +| [HBASE-14162](https://issues.apache.org/jira/browse/HBASE-14162) | Fixing maven target for regenerating thrift classes fails against 0.9.2 | Blocker | build, Thrift | +| [HBASE-14168](https://issues.apache.org/jira/browse/HBASE-14168) | Avoid useless retry for DoNotRetryIOException in TableRecordReaderImpl | Minor | mapreduce | +| [HBASE-14173](https://issues.apache.org/jira/browse/HBASE-14173) | includeMVCCReadpoint parameter in DefaultCompactor#createTmpWriter() represents no-op | Major | . | +| [HBASE-14155](https://issues.apache.org/jira/browse/HBASE-14155) | StackOverflowError in reverse scan | Critical | regionserver, Scanners | +| [HBASE-14153](https://issues.apache.org/jira/browse/HBASE-14153) | Typo in ProcedureManagerHost.MASTER\_PROCEUDRE\_CONF\_KEY | Trivial | . | +| [HBASE-14157](https://issues.apache.org/jira/browse/HBASE-14157) | Interfaces implemented by subclasses should be checked when registering CoprocessorService | Major | Coprocessors | +| [HBASE-14024](https://issues.apache.org/jira/browse/HBASE-14024) | ImportTsv is not loading hbase-default.xml | Critical | mapreduce | +| [HBASE-14156](https://issues.apache.org/jira/browse/HBASE-14156) | Fix test failure in TestOpenTableInCoprocessor | Major | . | +| [HBASE-14146](https://issues.apache.org/jira/browse/HBASE-14146) | Once replication sees an error it slows down forever | Major | Replication | +| [HBASE-14115](https://issues.apache.org/jira/browse/HBASE-14115) | Fix resource leak in HMasterCommandLine | Major | master, tooling | +| [HBASE-14119](https://issues.apache.org/jira/browse/HBASE-14119) | Show meaningful error messages instead of stack traces in hbase shell commands. Fixing few commands in this jira. | Minor | . | +| [HBASE-14065](https://issues.apache.org/jira/browse/HBASE-14065) | ref guide section on release candidate generation refers to old doc files | Major | documentation | +| [HBASE-14000](https://issues.apache.org/jira/browse/HBASE-14000) | Region server failed to report to Master and was stuck in reportForDuty retry loop | Major | regionserver | +| [HBASE-14106](https://issues.apache.org/jira/browse/HBASE-14106) | TestProcedureRecovery is flaky | Major | proc-v2, test | +| [HBASE-14076](https://issues.apache.org/jira/browse/HBASE-14076) | ResultSerialization and MutationSerialization can throw InvalidProtocolBufferException when serializing a cell larger than 64MB | Major | . | +| [HBASE-13971](https://issues.apache.org/jira/browse/HBASE-13971) | Flushes stuck since 6 hours on a regionserver. | Critical | regionserver | +| [HBASE-14050](https://issues.apache.org/jira/browse/HBASE-14050) | NPE in org.apache.hadoop.hbase.ipc.RpcServer$Connection.readAndProcess | Minor | . | +| [HBASE-14100](https://issues.apache.org/jira/browse/HBASE-14100) | Fix high priority findbugs warnings | Major | regionserver | +| [HBASE-14089](https://issues.apache.org/jira/browse/HBASE-14089) | Remove unnecessary draw of system entropy from RecoverableZooKeeper | Minor | . | +| [HBASE-14094](https://issues.apache.org/jira/browse/HBASE-14094) | Procedure.proto can't be compiled to C++ | Major | proc-v2, Protobufs | +| [HBASE-14077](https://issues.apache.org/jira/browse/HBASE-14077) | Add package to hbase-protocol protobuf files. | Major | Protobufs | +| [HBASE-14041](https://issues.apache.org/jira/browse/HBASE-14041) | Client MetaCache is cleared if a ThrottlingException is thrown | Minor | Client | +| [HBASE-13897](https://issues.apache.org/jira/browse/HBASE-13897) | OOM may occur when Import imports a row with too many KeyValues | Major | . | +| [HBASE-14073](https://issues.apache.org/jira/browse/HBASE-14073) | TestRemoteTable.testDelete failed in the latest trunk code | Major | REST | +| [HBASE-13997](https://issues.apache.org/jira/browse/HBASE-13997) | ScannerCallableWithReplicas cause Infinitely blocking | Minor | Client | +| [HBASE-14029](https://issues.apache.org/jira/browse/HBASE-14029) | getting started for standalone still references hadoop-version-specific binary artifacts | Major | documentation | +| [HBASE-14042](https://issues.apache.org/jira/browse/HBASE-14042) | Fix FATAL level logging in FSHLog where logged for non fatal exceptions | Major | Operability, wal | +| [HBASE-13337](https://issues.apache.org/jira/browse/HBASE-13337) | Table regions are not assigning back, after restarting all regionservers at once. | Blocker | Region Assignment | +| [HBASE-13561](https://issues.apache.org/jira/browse/HBASE-13561) | ITBLL.Verify doesn't actually evaluate counters after job completes | Major | integration tests | +| [HBASE-13988](https://issues.apache.org/jira/browse/HBASE-13988) | Add exception handler for lease thread | Minor | . | +| [HBASE-13352](https://issues.apache.org/jira/browse/HBASE-13352) | Add hbase.import.version to Import usage. | Major | . | +| [HBASE-14012](https://issues.apache.org/jira/browse/HBASE-14012) | Double Assignment and Dataloss when ServerCrashProcedure runs during Master failover | Blocker | master, Region Assignment | +| [HBASE-13329](https://issues.apache.org/jira/browse/HBASE-13329) | ArrayIndexOutOfBoundsException in CellComparator#getMinimumMidpointArray | Critical | regionserver | +| [HBASE-14011](https://issues.apache.org/jira/browse/HBASE-14011) | MultiByteBuffer position based reads does not work correctly | Major | . | +| [HBASE-13861](https://issues.apache.org/jira/browse/HBASE-13861) | BucketCacheTmpl.jamon has wrong bucket free and used labels | Major | regionserver, UI | +| [HBASE-14010](https://issues.apache.org/jira/browse/HBASE-14010) | TestRegionRebalancing.testRebalanceOnRegionServerNumberChange fails; cluster not balanced | Major | test | +| [HBASE-14005](https://issues.apache.org/jira/browse/HBASE-14005) | Set permission to .top hfile in LoadIncrementalHFiles | Trivial | . | +| [HBASE-13970](https://issues.apache.org/jira/browse/HBASE-13970) | NPE during compaction in trunk | Major | regionserver | +| [HBASE-13895](https://issues.apache.org/jira/browse/HBASE-13895) | DATALOSS: Region assigned before WAL replay when abort | Critical | Recovery, Region Assignment, wal | +| [HBASE-13978](https://issues.apache.org/jira/browse/HBASE-13978) | Variable never assigned in SimpleTotalOrderPartitioner.getPartition() | Major | mapreduce | +| [HBASE-13995](https://issues.apache.org/jira/browse/HBASE-13995) | ServerName is not fully case insensitive | Major | Region Assignment | +| [HBASE-13959](https://issues.apache.org/jira/browse/HBASE-13959) | Region splitting uses a single thread in most common cases | Critical | regionserver | +| [HBASE-13989](https://issues.apache.org/jira/browse/HBASE-13989) | Threshold for combined MemStore and BlockCache percentages is not checked | Major | regionserver | +| [HBASE-13930](https://issues.apache.org/jira/browse/HBASE-13930) | Exclude Findbugs packages from shaded jars | Major | build, Client | +| [HBASE-13863](https://issues.apache.org/jira/browse/HBASE-13863) | Multi-wal feature breaks reported number and size of HLogs | Major | regionserver, UI | +| [HBASE-13974](https://issues.apache.org/jira/browse/HBASE-13974) | TestRateLimiter#testFixedIntervalResourceAvailability may fail | Minor | test | +| [HBASE-13969](https://issues.apache.org/jira/browse/HBASE-13969) | AuthenticationTokenSecretManager is never stopped in RPCServer | Minor | . | +| [HBASE-13923](https://issues.apache.org/jira/browse/HBASE-13923) | Loaded region coprocessors are not reported in shell status command | Major | regionserver, shell | +| [HBASE-13893](https://issues.apache.org/jira/browse/HBASE-13893) | Replace HTable with Table in client tests | Major | Client, test | +| [HBASE-13835](https://issues.apache.org/jira/browse/HBASE-13835) | KeyValueHeap.current might be in heap when exception happens in pollRealKV | Major | Scanners | +| [HBASE-13945](https://issues.apache.org/jira/browse/HBASE-13945) | Prefix\_Tree seekBefore() does not work correctly | Major | io | +| [HBASE-13958](https://issues.apache.org/jira/browse/HBASE-13958) | RESTApiClusterManager calls kill() instead of suspend() and resume() | Minor | integration tests | +| [HBASE-13938](https://issues.apache.org/jira/browse/HBASE-13938) | Deletes done during the region merge transaction may get eclipsed | Major | master, regionserver | +| [HBASE-13933](https://issues.apache.org/jira/browse/HBASE-13933) | DBE's seekBefore with tags corrupts the tag's offset information thus leading to incorrect results | Critical | io | +| [HBASE-13877](https://issues.apache.org/jira/browse/HBASE-13877) | Interrupt to flush from TableFlushProcedure causes dataloss in ITBLL | Blocker | integration tests, proc-v2 | +| [HBASE-13918](https://issues.apache.org/jira/browse/HBASE-13918) | Fix hbase:namespace description in webUI | Trivial | hbase | +| [HBASE-13885](https://issues.apache.org/jira/browse/HBASE-13885) | ZK watches leaks during snapshots | Critical | snapshots | +| [HBASE-13737](https://issues.apache.org/jira/browse/HBASE-13737) | [HBase MOB] MOBTable cloned from a snapshot leads to data loss, when that actual snapshot and main table is deleted. | Critical | mob | +| [HBASE-13913](https://issues.apache.org/jira/browse/HBASE-13913) | RAT exclusion list missing asciidoctor support files | Major | . | +| [HBASE-13279](https://issues.apache.org/jira/browse/HBASE-13279) | Add src/main/asciidoc/asciidoctor.css to RAT exclusion list in POM | Minor | documentation | +| [HBASE-13821](https://issues.apache.org/jira/browse/HBASE-13821) | WARN if hbase.bucketcache.percentage.in.combinedcache is set | Minor | regionserver, Usability | +| [HBASE-13888](https://issues.apache.org/jira/browse/HBASE-13888) | Fix refill bug from HBASE-13686 | Major | regionserver | +| [HBASE-13905](https://issues.apache.org/jira/browse/HBASE-13905) | TestRecoveredEdits.testReplayWorksThoughLotsOfFlushing failing consistently on branch-1.1 | Critical | regionserver, test | +| [HBASE-13833](https://issues.apache.org/jira/browse/HBASE-13833) | LoadIncrementalHFile.doBulkLoad(Path,HTable) doesn't handle unmanaged connections when using SecureBulkLoad | Major | tooling | +| [HBASE-13901](https://issues.apache.org/jira/browse/HBASE-13901) | Error while calling watcher on creating and deleting an HBase table | Minor | . | +| [HBASE-13892](https://issues.apache.org/jira/browse/HBASE-13892) | Scanner with all results filtered out results in NPE | Critical | Client | +| [HBASE-13560](https://issues.apache.org/jira/browse/HBASE-13560) | Large compaction queue should steal from small compaction queue when idle | Major | Compaction | +| [HBASE-13878](https://issues.apache.org/jira/browse/HBASE-13878) | Set hbase.fs.tmp.dir config in HBaseTestingUtility.java for Phoenix UT to use | Minor | test | +| [HBASE-13873](https://issues.apache.org/jira/browse/HBASE-13873) | LoadTestTool addAuthInfoToConf throws UnsupportedOperationException | Major | integration tests | +| [HBASE-13875](https://issues.apache.org/jira/browse/HBASE-13875) | Clock skew between master and region server may render restored region without server address | Major | snapshots | +| [HBASE-13845](https://issues.apache.org/jira/browse/HBASE-13845) | Expire of one region server carrying meta can bring down the master | Major | master | +| [HBASE-13847](https://issues.apache.org/jira/browse/HBASE-13847) | getWriteRequestCount function in HRegionServer uses int variable to return the count. | Major | hbase, regionserver | +| [HBASE-13811](https://issues.apache.org/jira/browse/HBASE-13811) | Splitting WALs, we are filtering out too many edits -\> DATALOSS | Critical | wal | +| [HBASE-13853](https://issues.apache.org/jira/browse/HBASE-13853) | ITBLL improvements after HBASE-13811 | Blocker | integration tests, tooling, wal | +| [HBASE-13686](https://issues.apache.org/jira/browse/HBASE-13686) | Fail to limit rate in RateLimiter | Major | Client | +| [HBASE-13851](https://issues.apache.org/jira/browse/HBASE-13851) | RpcClientImpl.close() can hang with cancelled replica RPCs | Major | IPC/RPC | +| [HBASE-13834](https://issues.apache.org/jira/browse/HBASE-13834) | Evict count not properly passed to HeapMemoryTuner. | Major | hbase, regionserver | +| [HBASE-13729](https://issues.apache.org/jira/browse/HBASE-13729) | Old hbase.regionserver.global.memstore.upperLimit and lowerLimit properties are ignored if present | Critical | regionserver | +| [HBASE-13789](https://issues.apache.org/jira/browse/HBASE-13789) | ForeignException should not be sent to the client | Minor | Client, master | +| [HBASE-13779](https://issues.apache.org/jira/browse/HBASE-13779) | Calling table.exists() before table.get() end up with an empty Result | Major | Client | +| [HBASE-13831](https://issues.apache.org/jira/browse/HBASE-13831) | TestHBaseFsck#testParallelHbck is flaky against hadoop 2.6+ | Minor | hbck, test | +| [HBASE-13826](https://issues.apache.org/jira/browse/HBASE-13826) | Unable to create table when group acls are appropriately set. | Major | security | +| [HBASE-13824](https://issues.apache.org/jira/browse/HBASE-13824) | TestGenerateDelegationToken: Master fails to start in Windows environment | Minor | test | +| [HBASE-13647](https://issues.apache.org/jira/browse/HBASE-13647) | Default value for hbase.client.operation.timeout is too high | Blocker | Client | +| [HBASE-13820](https://issues.apache.org/jira/browse/HBASE-13820) | Zookeeper is failing to start | Critical | . | +| [HBASE-13638](https://issues.apache.org/jira/browse/HBASE-13638) | Put copy constructor is shallow | Major | Client | +| [HBASE-13809](https://issues.apache.org/jira/browse/HBASE-13809) | TestRowTooBig should use HDFS directory for its region directory | Minor | test | +| [HBASE-13812](https://issues.apache.org/jira/browse/HBASE-13812) | Deleting of last Column Family of a table should not be allowed | Major | master | +| [HBASE-13813](https://issues.apache.org/jira/browse/HBASE-13813) | Fix Javadoc warnings in Procedure.java | Minor | documentation | +| [HBASE-13776](https://issues.apache.org/jira/browse/HBASE-13776) | Setting illegal versions for HColumnDescriptor does not throw IllegalArgumentException | Major | API | +| [HBASE-13802](https://issues.apache.org/jira/browse/HBASE-13802) | Procedure V2: Master fails to come up due to rollback of create namespace table | Major | master, proc-v2 | +| [HBASE-13796](https://issues.apache.org/jira/browse/HBASE-13796) | ZKUtil doesn't clean quorum setting properly | Minor | . | +| [HBASE-13800](https://issues.apache.org/jira/browse/HBASE-13800) | TestStore#testDeleteExpiredStoreFiles should create unique data/log directory for each call | Minor | test | +| [HBASE-13797](https://issues.apache.org/jira/browse/HBASE-13797) | Fix resource leak in HBaseFsck | Minor | . | +| [HBASE-13801](https://issues.apache.org/jira/browse/HBASE-13801) | Hadoop src checksum is shown instead of HBase src checksum in master / RS UI | Major | UI | +| [HBASE-13723](https://issues.apache.org/jira/browse/HBASE-13723) | In table.rb scanners are never closed. | Major | shell | +| [HBASE-13777](https://issues.apache.org/jira/browse/HBASE-13777) | Table fragmentation display triggers NPE on master status page | Major | UI | +| [HBASE-13778](https://issues.apache.org/jira/browse/HBASE-13778) | BoundedByteBufferPool incorrectly increasing runningAverage buffer length | Major | io, util | +| [HBASE-13732](https://issues.apache.org/jira/browse/HBASE-13732) | TestHBaseFsck#testParallelWithRetriesHbck fails intermittently | Minor | hbck, test | +| [HBASE-13768](https://issues.apache.org/jira/browse/HBASE-13768) | ZooKeeper znodes are bootstrapped with insecure ACLs in a secure configuration | Blocker | security, Zookeeper | +| [HBASE-13767](https://issues.apache.org/jira/browse/HBASE-13767) | Allow ZKAclReset to set and not just clear ZK ACLs | Trivial | Operability, Zookeeper | +| [HBASE-13746](https://issues.apache.org/jira/browse/HBASE-13746) | list\_replicated\_tables command is not listing table in hbase shell. | Major | shell | +| [HBASE-13760](https://issues.apache.org/jira/browse/HBASE-13760) | Cleanup Findbugs keySet iterator warnings | Minor | . | +| [HBASE-13734](https://issues.apache.org/jira/browse/HBASE-13734) | Improper timestamp checking with VisibilityScanDeleteTracker | Major | security | +| [HBASE-13604](https://issues.apache.org/jira/browse/HBASE-13604) | bin/hbase mapredcp does not include yammer-metrics jar | Minor | . | +| [HBASE-13703](https://issues.apache.org/jira/browse/HBASE-13703) | ReplicateContext should not be a member of ReplicationSource | Minor | . | +| [HBASE-13733](https://issues.apache.org/jira/browse/HBASE-13733) | Failed MiniZooKeeperCluster startup did not shutdown ZK servers | Major | Zookeeper | +| [HBASE-13741](https://issues.apache.org/jira/browse/HBASE-13741) | Disable TestRegionObserverInterface#testRecovery and testLegacyRecovery | Minor | . | +| [HBASE-13731](https://issues.apache.org/jira/browse/HBASE-13731) | TestReplicationAdmin should clean up MiniZKCluster resource | Trivial | test | +| [HBASE-13709](https://issues.apache.org/jira/browse/HBASE-13709) | Updates to meta table server columns may be eclipsed | Major | IPC/RPC, regionserver | +| [HBASE-13721](https://issues.apache.org/jira/browse/HBASE-13721) | Improve shell scan performances when using LIMIT | Major | shell | +| [HBASE-13700](https://issues.apache.org/jira/browse/HBASE-13700) | Allow Thrift2 HSHA server to have configurable threads | Major | Thrift | +| [HBASE-13719](https://issues.apache.org/jira/browse/HBASE-13719) | Asynchronous scanner -- cache size-in-bytes bug fix | Major | . | +| [HBASE-13618](https://issues.apache.org/jira/browse/HBASE-13618) | ReplicationSource is too eager to remove sinks | Minor | . | +| [HBASE-13711](https://issues.apache.org/jira/browse/HBASE-13711) | Provide an API to set min and max versions in HColumnDescriptor | Minor | . | +| [HBASE-13722](https://issues.apache.org/jira/browse/HBASE-13722) | Avoid non static method from BloomFilterUtil | Trivial | . | +| [HBASE-13704](https://issues.apache.org/jira/browse/HBASE-13704) | Hbase throws OutOfOrderScannerNextException when MultiRowRangeFilter is used | Major | Client | +| [HBASE-13717](https://issues.apache.org/jira/browse/HBASE-13717) | TestBoundedRegionGroupingProvider#setMembershipDedups need to set HDFS diretory for WAL | Minor | wal | +| [HBASE-13693](https://issues.apache.org/jira/browse/HBASE-13693) | [HBase MOB] Mob files are not encrypting. | Major | mob | +| [HBASE-13694](https://issues.apache.org/jira/browse/HBASE-13694) | CallQueueSize is incorrectly decremented until the response is sent | Major | IPC/RPC, master, regionserver | +| [HBASE-13668](https://issues.apache.org/jira/browse/HBASE-13668) | TestFlushRegionEntry is flaky | Minor | . | +| [HBASE-13699](https://issues.apache.org/jira/browse/HBASE-13699) | Expand information about HBase quotas | Major | documentation | +| [HBASE-13651](https://issues.apache.org/jira/browse/HBASE-13651) | Handle StoreFileScanner FileNotFoundException | Minor | . | +| [HBASE-11830](https://issues.apache.org/jira/browse/HBASE-11830) | TestReplicationThrottler.testThrottling failed on virtual boxes | Minor | test | +| [HBASE-13663](https://issues.apache.org/jira/browse/HBASE-13663) | HMaster fails to restart 'HMaster: Failed to become active master' | Major | hbase | +| [HBASE-13217](https://issues.apache.org/jira/browse/HBASE-13217) | Procedure fails due to ZK issue | Major | . | +| [HBASE-13662](https://issues.apache.org/jira/browse/HBASE-13662) | RSRpcService.scan() throws an OutOfOrderScannerNext if the scan has a retriable failure | Major | IPC/RPC, regionserver | +| [HBASE-13533](https://issues.apache.org/jira/browse/HBASE-13533) | section on configuring ~/.m2/settings.xml has no anchor | Trivial | documentation | +| [HBASE-13661](https://issues.apache.org/jira/browse/HBASE-13661) | Correct binary compatibility issues discovered in 1.1.0RC0 | Major | . | +| [HBASE-13606](https://issues.apache.org/jira/browse/HBASE-13606) | AssignmentManager.assign() is not sync in both path | Major | Region Assignment | +| [HBASE-13635](https://issues.apache.org/jira/browse/HBASE-13635) | Regions stuck in transition because master is incorrectly assumed dead | Major | master, regionserver | +| [HBASE-13634](https://issues.apache.org/jira/browse/HBASE-13634) | Avoid unsafe reference equality checks to EMPTY byte[] | Major | Compaction, Scanners | +| [HBASE-1989](https://issues.apache.org/jira/browse/HBASE-1989) | Admin (et al.) not accurate with Column vs. Column-Family usage | Minor | Client | +| [HBASE-13580](https://issues.apache.org/jira/browse/HBASE-13580) | region\_mover.rb broken with TypeError: no public constructors for Java::OrgApacheHadoopHbaseClient::HTable | Major | scripts | +| [HBASE-13611](https://issues.apache.org/jira/browse/HBASE-13611) | update clover to work for current versions | Minor | build | +| [HBASE-13653](https://issues.apache.org/jira/browse/HBASE-13653) | Uninitialized HRegionServer#walFactory may result in NullPointerException at region server startup​ | Major | hbase | +| [HBASE-13612](https://issues.apache.org/jira/browse/HBASE-13612) | TestRegionFavoredNodes doesn't guard against setup failure | Minor | test | +| [HBASE-13649](https://issues.apache.org/jira/browse/HBASE-13649) | CellComparator.compareTimestamps javadoc inconsistent and wrong | Minor | documentation | +| [HBASE-13648](https://issues.apache.org/jira/browse/HBASE-13648) | test-patch.sh should ignore 'protobuf.generated' | Minor | build | +| [HBASE-13630](https://issues.apache.org/jira/browse/HBASE-13630) | Remove dead code in BufferedDataEncoder | Minor | . | +| [HBASE-13576](https://issues.apache.org/jira/browse/HBASE-13576) | HBCK enhancement: Failure in checking one region should not fail the entire HBCK operation. | Major | hbck | +| [HBASE-13625](https://issues.apache.org/jira/browse/HBASE-13625) | Use HDFS for HFileOutputFormat2 partitioner's path | Major | mapreduce | +| [HBASE-13633](https://issues.apache.org/jira/browse/HBASE-13633) | draining\_servers.rb broken with NoMethodError: undefined method 'getServerInfo' | Major | scripts | +| [HBASE-13628](https://issues.apache.org/jira/browse/HBASE-13628) | Use AtomicLong as size in BoundedConcurrentLinkedQueue | Major | util | +| [HBASE-13617](https://issues.apache.org/jira/browse/HBASE-13617) | TestReplicaWithCluster.testChangeTable timeout | Major | test | +| [HBASE-13599](https://issues.apache.org/jira/browse/HBASE-13599) | The Example Provided in Section 69: Examples of the Documentation Does Not Compile | Minor | documentation | +| [HBASE-13333](https://issues.apache.org/jira/browse/HBASE-13333) | Renew Scanner Lease without advancing the RegionScanner | Major | . | +| [HBASE-13607](https://issues.apache.org/jira/browse/HBASE-13607) | TestSplitLogManager.testGetPreviousRecoveryMode consistently failing | Minor | test | +| [HBASE-12413](https://issues.apache.org/jira/browse/HBASE-12413) | Mismatch in the equals and hashcode methods of KeyValue | Minor | . | +| [HBASE-13312](https://issues.apache.org/jira/browse/HBASE-13312) | SmallScannerCallable does not increment scan metrics | Major | Client, Scanners | +| [HBASE-13608](https://issues.apache.org/jira/browse/HBASE-13608) | 413 Error with Stargate through Knox, using AD, SPNEGO, and Pre-Auth | Major | REST | +| [HBASE-13601](https://issues.apache.org/jira/browse/HBASE-13601) | Connection leak during log splitting | Major | wal | +| [HBASE-13600](https://issues.apache.org/jira/browse/HBASE-13600) | check\_compatibility.sh should ignore shaded jars | Minor | build | +| [HBASE-13595](https://issues.apache.org/jira/browse/HBASE-13595) | Fix Javadoc warn induced in Bytes.java | Trivial | . | +| [HBASE-13564](https://issues.apache.org/jira/browse/HBASE-13564) | Master MBeans are not published | Major | master, metrics | +| [HBASE-13596](https://issues.apache.org/jira/browse/HBASE-13596) | src assembly does not build | Major | build | +| [HBASE-13594](https://issues.apache.org/jira/browse/HBASE-13594) | MultiRowRangeFilter shouldn't call HBaseZeroCopyByteString.wrap() directly | Major | . | +| [HBASE-13577](https://issues.apache.org/jira/browse/HBASE-13577) | Documentation is pointing to wrong port for Master Web UI | Minor | documentation | +| [HBASE-13585](https://issues.apache.org/jira/browse/HBASE-13585) | HRegionFileSystem#splitStoreFile() finishes without closing the file handle in some situation | Major | regionserver | +| [HBASE-13589](https://issues.apache.org/jira/browse/HBASE-13589) | [WINDOWS] hbase.cmd script is broken | Major | . | +| [HBASE-13417](https://issues.apache.org/jira/browse/HBASE-13417) | batchCoprocessorService() does not handle NULL keys | Minor | Coprocessors | +| [HBASE-13517](https://issues.apache.org/jira/browse/HBASE-13517) | Publish a client artifact with shaded dependencies | Major | . | +| [HBASE-13575](https://issues.apache.org/jira/browse/HBASE-13575) | TestChoreService has to make sure that the opened ChoreService is closed for each unit test | Trivial | . | +| [HBASE-13394](https://issues.apache.org/jira/browse/HBASE-13394) | Failed to recreate a table when quota is enabled | Major | security | +| [HBASE-13490](https://issues.apache.org/jira/browse/HBASE-13490) | foreground daemon start re-executes ulimit output | Minor | scripts | +| [HBASE-13359](https://issues.apache.org/jira/browse/HBASE-13359) | Update ACL matrix to include table owner. | Minor | documentation | +| [HBASE-13149](https://issues.apache.org/jira/browse/HBASE-13149) | HBase MR is broken on Hadoop 2.5+ Yarn | Blocker | . | +| [HBASE-13546](https://issues.apache.org/jira/browse/HBASE-13546) | NPE on region server status page if all masters are down | Major | regionserver | +| [HBASE-13555](https://issues.apache.org/jira/browse/HBASE-13555) | StackServlet produces 500 error | Major | . | +| [HBASE-13523](https://issues.apache.org/jira/browse/HBASE-13523) | API Doumentation formatting is broken | Minor | documentation | +| [HBASE-13528](https://issues.apache.org/jira/browse/HBASE-13528) | A bug on selecting compaction pool | Minor | Compaction | +| [HBASE-13526](https://issues.apache.org/jira/browse/HBASE-13526) | TestRegionServerReportForDuty can be flaky: hang or timeout | Minor | test | +| [HBASE-13527](https://issues.apache.org/jira/browse/HBASE-13527) | The default value for hbase.client.scanner.max.result.size is never actually set on Scans | Major | . | +| [HBASE-13437](https://issues.apache.org/jira/browse/HBASE-13437) | ThriftServer leaks ZooKeeper connections | Major | Thrift | +| [HBASE-13524](https://issues.apache.org/jira/browse/HBASE-13524) | TestReplicationAdmin fails on JDK 1.8 | Major | . | +| [HBASE-13499](https://issues.apache.org/jira/browse/HBASE-13499) | AsyncRpcClient test cases failure in powerpc | Major | IPC/RPC | +| [HBASE-13471](https://issues.apache.org/jira/browse/HBASE-13471) | Fix a possible infinite loop in doMiniBatchMutation | Major | . | +| [HBASE-13520](https://issues.apache.org/jira/browse/HBASE-13520) | NullPointerException in TagRewriteCell | Major | . | +| [HBASE-13482](https://issues.apache.org/jira/browse/HBASE-13482) | Phoenix is failing to scan tables on secure environments. | Major | . | +| [HBASE-13430](https://issues.apache.org/jira/browse/HBASE-13430) | HFiles that are in use by a table cloned from a snapshot may be deleted when that snapshot is deleted | Critical | hbase | +| [HBASE-13491](https://issues.apache.org/jira/browse/HBASE-13491) | Issue in FuzzyRowFilter#getNextForFuzzyRule | Major | Filters | +| [HBASE-13477](https://issues.apache.org/jira/browse/HBASE-13477) | Create metrics on failed requests | Major | . | +| [HBASE-13486](https://issues.apache.org/jira/browse/HBASE-13486) | region\_status.rb broken with NameError: uninitialized constant IOException | Major | scripts | +| [HBASE-13473](https://issues.apache.org/jira/browse/HBASE-13473) | deleted cells come back alive after the stripe compaction | Blocker | Compaction | +| [HBASE-12006](https://issues.apache.org/jira/browse/HBASE-12006) | [JDK 8] KeyStoreTestUtil#generateCertificate fails due to "subject class type invalid" | Minor | . | +| [HBASE-13460](https://issues.apache.org/jira/browse/HBASE-13460) | Revise the MetaLookupPool executor-related defaults (introduced in HBASE-13036) | Major | . | +| [HBASE-13475](https://issues.apache.org/jira/browse/HBASE-13475) | Small spelling mistake in region\_mover#isSuccessfulScan causes NoMethodError | Trivial | scripts | +| [HBASE-13301](https://issues.apache.org/jira/browse/HBASE-13301) | Possible memory leak in BucketCache | Major | BlockCache | +| [HBASE-13457](https://issues.apache.org/jira/browse/HBASE-13457) | SnapshotExistsException doesn't honor the DoNotRetry | Trivial | Client | +| [HBASE-13423](https://issues.apache.org/jira/browse/HBASE-13423) | Remove duplicate entry for hbase.regionserver.regionSplitLimit in hbase-default.xml | Minor | hbase | +| [HBASE-13275](https://issues.apache.org/jira/browse/HBASE-13275) | Setting hbase.security.authorization to false does not disable authorization | Major | security | +| [HBASE-11544](https://issues.apache.org/jira/browse/HBASE-11544) | [Ergonomics] hbase.client.scanner.caching is dogged and will try to return batch even if it means OOME | Critical | . | +| [HBASE-13414](https://issues.apache.org/jira/browse/HBASE-13414) | TestHCM no longer needs to test for JRE 6. | Minor | test | +| [HBASE-13377](https://issues.apache.org/jira/browse/HBASE-13377) | Canary may generate false alarm on the first region when there are many delete markers | Major | monitoring | +| [HBASE-13289](https://issues.apache.org/jira/browse/HBASE-13289) | typo in splitSuccessCount metric | Major | metrics | +| [HBASE-13299](https://issues.apache.org/jira/browse/HBASE-13299) | Add setReturnResults() to Increment, like Append has | Critical | API | +| [HBASE-13410](https://issues.apache.org/jira/browse/HBASE-13410) | Bug in KeyValueUtil.oswrite() for non Keyvalue cases | Major | . | +| [HBASE-13411](https://issues.apache.org/jira/browse/HBASE-13411) | Misleading error message when request size quota limit exceeds | Minor | . | +| [HBASE-13409](https://issues.apache.org/jira/browse/HBASE-13409) | Add categories to uncategorized tests | Trivial | . | +| [HBASE-13374](https://issues.apache.org/jira/browse/HBASE-13374) | Small scanners (with particular configurations) do not return all rows | Blocker | . | +| [HBASE-13406](https://issues.apache.org/jira/browse/HBASE-13406) | TestAccessController is flaky when create is slow | Minor | security, test | +| [HBASE-13397](https://issues.apache.org/jira/browse/HBASE-13397) | Purge duplicate rpc request thread local | Major | IPC/RPC | +| [HBASE-13382](https://issues.apache.org/jira/browse/HBASE-13382) | IntegrationTestBigLinkedList should use SecureRandom | Major | integration tests | +| [HBASE-13385](https://issues.apache.org/jira/browse/HBASE-13385) | TestGenerateDelegationToken is broken with hadoop 2.8.0 | Major | test | +| [HBASE-13388](https://issues.apache.org/jira/browse/HBASE-13388) | Handling NullPointer in ZKProcedureMemberRpcs while getting ZNode data | Minor | . | +| [HBASE-13058](https://issues.apache.org/jira/browse/HBASE-13058) | Hbase shell command 'scan' for non existent table shows unnecessary info for one unrelated existent table. | Trivial | Client | +| [HBASE-13091](https://issues.apache.org/jira/browse/HBASE-13091) | Split ZK Quorum on Master WebUI | Minor | . | +| [HBASE-13384](https://issues.apache.org/jira/browse/HBASE-13384) | Fix Javadoc warnings introduced by HBASE-12972 | Trivial | . | +| [HBASE-13368](https://issues.apache.org/jira/browse/HBASE-13368) | Hash.java is declared as public Interface - but it should be Private | Trivial | . | +| [HBASE-13383](https://issues.apache.org/jira/browse/HBASE-13383) | TestRegionServerObserver.testCoprocessorHooksInRegionsMerge zombie after HBASE-12975 | Major | . | +| [HBASE-13296](https://issues.apache.org/jira/browse/HBASE-13296) | Fix the deletion of acl notify nodes for namespace. | Minor | . | +| [HBASE-12954](https://issues.apache.org/jira/browse/HBASE-12954) | Ability impaired using HBase on multihomed hosts | Minor | . | +| [HBASE-13317](https://issues.apache.org/jira/browse/HBASE-13317) | Region server reportForDuty stuck looping if there is a master change | Major | regionserver | +| [HBASE-13371](https://issues.apache.org/jira/browse/HBASE-13371) | Fix typo in TestAsyncIPC | Major | test | +| [HBASE-13364](https://issues.apache.org/jira/browse/HBASE-13364) | Make using the default javac on by default | Major | build | +| [HBASE-12993](https://issues.apache.org/jira/browse/HBASE-12993) | Use HBase 1.0 interfaces in hbase-thrift | Major | . | +| [HBASE-13262](https://issues.apache.org/jira/browse/HBASE-13262) | ResultScanner doesn't return all rows in Scan | Blocker | Client | +| [HBASE-13357](https://issues.apache.org/jira/browse/HBASE-13357) | If maxTables/maxRegions exceeds quota in a namespace, throw QuotaExceededException | Minor | . | +| [HBASE-13355](https://issues.apache.org/jira/browse/HBASE-13355) | QA bot reports checking javac twice | Minor | . | +| [HBASE-13328](https://issues.apache.org/jira/browse/HBASE-13328) | LoadIncrementalHFile.doBulkLoad(Path,HTable) should handle managed connections | Major | . | +| [HBASE-13295](https://issues.apache.org/jira/browse/HBASE-13295) | TestInfoServers hang | Major | test | +| [HBASE-8725](https://issues.apache.org/jira/browse/HBASE-8725) | Add total time RPC call metrics | Major | metrics | +| [HBASE-13265](https://issues.apache.org/jira/browse/HBASE-13265) | Make thrift2 usable from c++ | Major | . | +| [HBASE-13326](https://issues.apache.org/jira/browse/HBASE-13326) | Disabled table can't be enabled after HBase is restarted | Blocker | . | +| [HBASE-13325](https://issues.apache.org/jira/browse/HBASE-13325) | Protocol Buffers 2.5 no longer available for download on code.google.com | Major | . | +| [HBASE-13294](https://issues.apache.org/jira/browse/HBASE-13294) | Fix the critical ancient loopholes in security testing infrastructure. | Major | . | +| [HBASE-13311](https://issues.apache.org/jira/browse/HBASE-13311) | TestQuotaThrottle flaky on slow machine | Minor | test | +| [HBASE-13305](https://issues.apache.org/jira/browse/HBASE-13305) | Get(Get get) is not copying the row key | Major | API | +| [HBASE-13331](https://issues.apache.org/jira/browse/HBASE-13331) | Exceptions from DFS client can cause CatalogJanitor to delete referenced files | Blocker | master | +| [HBASE-13273](https://issues.apache.org/jira/browse/HBASE-13273) | Make Result.EMPTY\_RESULT read-only; currently it can be modified | Major | . | +| [HBASE-13321](https://issues.apache.org/jira/browse/HBASE-13321) | Fix flaky TestHBaseFsck | Minor | test | +| [HBASE-13314](https://issues.apache.org/jira/browse/HBASE-13314) | Fix NPE in HMaster.getClusterStatus() | Minor | . | +| [HBASE-13281](https://issues.apache.org/jira/browse/HBASE-13281) | 'hbase.bucketcache.size' description in hbase book is not correct | Major | documentation | +| [HBASE-13315](https://issues.apache.org/jira/browse/HBASE-13315) | BufferedMutator should be @InterfaceAudience.Public | Major | . | +| [HBASE-13309](https://issues.apache.org/jira/browse/HBASE-13309) | Some tests do not reset EnvironmentEdgeManager | Minor | test | +| [HBASE-13308](https://issues.apache.org/jira/browse/HBASE-13308) | Fix flaky TestEndToEndSplitTransaction | Major | flakey, test | +| [HBASE-13282](https://issues.apache.org/jira/browse/HBASE-13282) | Fix the minor issues of running Canary on kerberized environment | Minor | . | +| [HBASE-12867](https://issues.apache.org/jira/browse/HBASE-12867) | Shell does not support custom replication endpoint specification | Major | . | +| [HBASE-13274](https://issues.apache.org/jira/browse/HBASE-13274) | Fix misplaced deprecation in Delete#addXYZ | Major | API | +| [HBASE-13114](https://issues.apache.org/jira/browse/HBASE-13114) | [UNITTEST] TestEnableTableHandler.testDeleteForSureClearsAllTableRowsFromMeta | Major | test | +| [HBASE-13285](https://issues.apache.org/jira/browse/HBASE-13285) | Fix flaky getRegions() in TestAccessController.setUp() | Minor | test | +| [HBASE-13188](https://issues.apache.org/jira/browse/HBASE-13188) | java.lang.ArithmeticException issue in BoundedByteBufferPool.putBuffer | Major | . | +| [HBASE-13200](https://issues.apache.org/jira/browse/HBASE-13200) | Improper configuration can leads to endless lease recovery during failover | Major | MTTR | +| [HBASE-13253](https://issues.apache.org/jira/browse/HBASE-13253) | LoadIncrementalHFiles unify hfiles discovery | Major | Client, mapreduce | +| [HBASE-13229](https://issues.apache.org/jira/browse/HBASE-13229) | Specify bash for local-regionservers.sh and local-master-backup.sh | Minor | scripts | +| [HBASE-13176](https://issues.apache.org/jira/browse/HBASE-13176) | Flakey TestZooKeeper test. | Major | . | +| [HBASE-13093](https://issues.apache.org/jira/browse/HBASE-13093) | Local mode HBase instance doesn't shut down. | Major | . | +| [HBASE-12908](https://issues.apache.org/jira/browse/HBASE-12908) | Typos in MemStoreFlusher javadocs | Trivial | documentation | +| [HBASE-13254](https://issues.apache.org/jira/browse/HBASE-13254) | EnableTableHandler#prepare would not throw TableNotFoundException during recovery | Minor | . | +| [HBASE-13193](https://issues.apache.org/jira/browse/HBASE-13193) | RegionScannerImpl filters should not be reset if a partial Result is returned | Major | . | +| [HBASE-13246](https://issues.apache.org/jira/browse/HBASE-13246) | Correct the assertion for namespace permissions in tearDown method of TestAccessController | Minor | security, test | +| [HBASE-13239](https://issues.apache.org/jira/browse/HBASE-13239) | HBase grant at specific column level does not work for Groups | Major | hbase | +| [HBASE-13242](https://issues.apache.org/jira/browse/HBASE-13242) | TestPerColumnFamilyFlush.testFlushingWhenLogRolling hung | Major | test | +| [HBASE-13227](https://issues.apache.org/jira/browse/HBASE-13227) | LoadIncrementalHFile should skip non-files inside a possible family-dir | Minor | Client, mapreduce | +| [HBASE-13232](https://issues.apache.org/jira/browse/HBASE-13232) | ConnectionManger : Batch pool threads and metaLookup pool threads should use different name pattern | Trivial | . | +| [HBASE-13097](https://issues.apache.org/jira/browse/HBASE-13097) | Use same EventLoopGroup for different AsyncRpcClients if possible | Major | IPC/RPC, test | +| [HBASE-13136](https://issues.apache.org/jira/browse/HBASE-13136) | TestSplitLogManager.testGetPreviousRecoveryMode is flakey | Major | . | +| [HBASE-13224](https://issues.apache.org/jira/browse/HBASE-13224) | Minor formatting issue when logging a namespace scope in AuthResult#toContextString | Trivial | Coprocessors, security | +| [HBASE-13194](https://issues.apache.org/jira/browse/HBASE-13194) | TableNamespaceManager not ready cause MasterQuotaManager initialization fail | Major | master | +| [HBASE-13218](https://issues.apache.org/jira/browse/HBASE-13218) | Correct the syntax shown for using ExportSnapshot tool in the book | Minor | documentation | +| [HBASE-13167](https://issues.apache.org/jira/browse/HBASE-13167) | The check for balancerCutoffTime is buggy | Trivial | Balancer | +| [HBASE-13192](https://issues.apache.org/jira/browse/HBASE-13192) | IntegrationTestBulkLoad doesn't wait for table modification sometimes leading to spurious test failures | Major | . | +| [HBASE-13191](https://issues.apache.org/jira/browse/HBASE-13191) | mvn site fails on jenkins due to permgen | Major | . | +| [HBASE-13208](https://issues.apache.org/jira/browse/HBASE-13208) | Patch build should match the patch filename and not the whole relative URL in findBranchNameFromPatchName | Trivial | . | +| [HBASE-13206](https://issues.apache.org/jira/browse/HBASE-13206) | Fix TableLock tableName log format | Trivial | . | +| [HBASE-13165](https://issues.apache.org/jira/browse/HBASE-13165) | Fix docs and scripts for default max heaps size after HBASE-11804 | Minor | documentation, scripts | +| [HBASE-13174](https://issues.apache.org/jira/browse/HBASE-13174) | Apply HBASE-11804 to Windows scripts | Major | scripts | +| [HBASE-13196](https://issues.apache.org/jira/browse/HBASE-13196) | Add info about default number of versions when using the export tool | Major | documentation | +| [HBASE-13181](https://issues.apache.org/jira/browse/HBASE-13181) | TestHRegionReplayEvents.testReplayBulkLoadEvent fails frequently. | Minor | . | +| [HBASE-13186](https://issues.apache.org/jira/browse/HBASE-13186) | HBase build error due to checkstyle | Major | build | +| [HBASE-12931](https://issues.apache.org/jira/browse/HBASE-12931) | The existing KeyValues in memstore are not removed completely after inserting cell into memStore | Minor | . | +| [HBASE-12723](https://issues.apache.org/jira/browse/HBASE-12723) | Update ACL matrix to reflect reality | Major | . | +| [HBASE-13023](https://issues.apache.org/jira/browse/HBASE-13023) | Document multiWAL | Major | documentation, wal | +| [HBASE-12468](https://issues.apache.org/jira/browse/HBASE-12468) | AUTHORIZATIONS should be part of Visibility Label Docs | Major | documentation | +| [HBASE-13135](https://issues.apache.org/jira/browse/HBASE-13135) | Move replication ops mgmt stuff from Javadoc to Ref Guide | Major | documentation, Replication | +| [HBASE-12969](https://issues.apache.org/jira/browse/HBASE-12969) | Parameter Validation is not there for shell script, local-master-backup.sh and local-regionservers.sh | Minor | scripts | +| [HBASE-13084](https://issues.apache.org/jira/browse/HBASE-13084) | Add labels to VisibilityLabelsCache asynchronously causes TestShell flakey | Major | test | +| [HBASE-13150](https://issues.apache.org/jira/browse/HBASE-13150) | TestMasterObserver failing disable table at end of test | Major | test | +| [HBASE-13163](https://issues.apache.org/jira/browse/HBASE-13163) | Add HBase version to header and footer of HTML and PDF docs | Major | documentation | +| [HBASE-13076](https://issues.apache.org/jira/browse/HBASE-13076) | Table can be forcibly enabled in AssignmentManager during table disabling. | Major | master, Region Assignment | +| [HBASE-13155](https://issues.apache.org/jira/browse/HBASE-13155) | Fix TestPrefixTree | Major | test | +| [HBASE-13156](https://issues.apache.org/jira/browse/HBASE-13156) | Fix minor rat violation recently introduced (asciidoctor.css). | Major | . | +| [HBASE-13052](https://issues.apache.org/jira/browse/HBASE-13052) | Explain each region split policy | Major | documentation | +| [HBASE-13146](https://issues.apache.org/jira/browse/HBASE-13146) | Race Condition in ScheduledChore and ChoreService | Major | regionserver | +| [HBASE-13145](https://issues.apache.org/jira/browse/HBASE-13145) | TestNamespaceAuditor.testRegionMerge is flaky | Major | test | +| [HBASE-13139](https://issues.apache.org/jira/browse/HBASE-13139) | Clean up missing JAVA\_HOME message in bin/hbase-config.sh | Trivial | shell | +| [HBASE-13115](https://issues.apache.org/jira/browse/HBASE-13115) | Fix the usage of remote user in thrift doAs implementation. | Major | . | +| [HBASE-13141](https://issues.apache.org/jira/browse/HBASE-13141) | IntegrationTestAcidGuarantees returns incorrect values for getColumnFamilies | Major | integration tests | +| [HBASE-13134](https://issues.apache.org/jira/browse/HBASE-13134) | mutateRow and checkAndMutate apis don't throw region level exceptions | Major | . | +| [HBASE-13123](https://issues.apache.org/jira/browse/HBASE-13123) | Minor bug in ROW bloom filter | Minor | . | +| [HBASE-13133](https://issues.apache.org/jira/browse/HBASE-13133) | NPE when running TestSplitLogManager | Major | . | +| [HBASE-13131](https://issues.apache.org/jira/browse/HBASE-13131) | ReplicationAdmin leaks connections if there's an error in the constructor | Critical | Replication | +| [HBASE-12924](https://issues.apache.org/jira/browse/HBASE-12924) | HRegionServer#MovedRegionsCleaner Chore does not start | Minor | . | +| [HBASE-13119](https://issues.apache.org/jira/browse/HBASE-13119) | FileLink should implement equals | Major | . | +| [HBASE-13112](https://issues.apache.org/jira/browse/HBASE-13112) | quota.rb, security.rb and visibility\_labels.rb leak connection | Major | shell | +| [HBASE-13111](https://issues.apache.org/jira/browse/HBASE-13111) | truncate\_preserve command is failing with undefined method error | Major | shell | +| [HBASE-13102](https://issues.apache.org/jira/browse/HBASE-13102) | Fix Pseudo-distributed Mode which was broken in 1.0.0 | Major | . | +| [HBASE-13048](https://issues.apache.org/jira/browse/HBASE-13048) | Use hbase.crypto.wal.algorithm in SecureProtobufLogReader while decrypting the data | Minor | . | +| [HBASE-13085](https://issues.apache.org/jira/browse/HBASE-13085) | Security issue in the implementation of Rest gataway 'doAs' proxy user support | Critical | REST, security | +| [HBASE-13077](https://issues.apache.org/jira/browse/HBASE-13077) | BoundedCompletionService doesn't pass trace info to server | Major | hbase | +| [HBASE-13083](https://issues.apache.org/jira/browse/HBASE-13083) | Master can be dead-locked while assigning META. | Major | master, Region Assignment | +| [HBASE-12953](https://issues.apache.org/jira/browse/HBASE-12953) | RegionServer is not functionally working with AysncRpcClient in secure mode | Critical | security | +| [HBASE-13001](https://issues.apache.org/jira/browse/HBASE-13001) | NullPointer in master logs for table.jsp | Trivial | . | +| [HBASE-13032](https://issues.apache.org/jira/browse/HBASE-13032) | Migration of states should be performed once META is assigned and onlined. | Major | . | +| [HBASE-13070](https://issues.apache.org/jira/browse/HBASE-13070) | Fix possibly zero length family and qualifier is TestCacheOnWrite | Major | test | +| [HBASE-13081](https://issues.apache.org/jira/browse/HBASE-13081) | Branch precommit builds are not updating to branch head before patch application | Major | . | +| [HBASE-13069](https://issues.apache.org/jira/browse/HBASE-13069) | Thrift Http Server returns an error code of 500 instead of 401 when authentication fails | Minor | . | +| [HBASE-13072](https://issues.apache.org/jira/browse/HBASE-13072) | BucketCache.evictBlock returns true if block does not exist | Major | BlockCache | +| [HBASE-13075](https://issues.apache.org/jira/browse/HBASE-13075) | TableInputFormatBase spuriously warning about multiple initializeTable calls | Minor | mapreduce | +| [HBASE-13036](https://issues.apache.org/jira/browse/HBASE-13036) | Meta scanner should use its own threadpool | Major | . | +| [HBASE-13065](https://issues.apache.org/jira/browse/HBASE-13065) | Increasing -Xmx when running TestDistributedLogSplitting | Major | test | +| [HBASE-13066](https://issues.apache.org/jira/browse/HBASE-13066) | Fix typo in AsyncRpcChannel | Major | IPC/RPC | +| [HBASE-12102](https://issues.apache.org/jira/browse/HBASE-12102) | Duplicate keys in HBase.RegionServer metrics JSON | Minor | . | +| [HBASE-13061](https://issues.apache.org/jira/browse/HBASE-13061) | RegionStates can remove wrong region from server holdings | Major | Region Assignment | +| [HBASE-13050](https://issues.apache.org/jira/browse/HBASE-13050) | Hbase shell create\_namespace command throws ArrayIndexOutOfBoundException for (invalid) empty text input. | Trivial | . | +| [HBASE-12948](https://issues.apache.org/jira/browse/HBASE-12948) | Calling Increment#addColumn on the same column multiple times produces wrong result | Critical | Client, regionserver | +| [HBASE-13040](https://issues.apache.org/jira/browse/HBASE-13040) | Possible failure of TestHMasterRPCException | Major | test | +| [HBASE-13055](https://issues.apache.org/jira/browse/HBASE-13055) | HRegion FIXED\_OVERHEAD missed one boolean | Major | . | +| [HBASE-12412](https://issues.apache.org/jira/browse/HBASE-12412) | update the ref guide(currently Example 10.2) to show "update an existing CF" with the new API modifyFamily in master | Minor | documentation | +| [HBASE-13041](https://issues.apache.org/jira/browse/HBASE-13041) | TestEnableTableHandler should not call AssignmentManager#assign concurrently with master | Major | integration tests | +| [HBASE-13047](https://issues.apache.org/jira/browse/HBASE-13047) | Add "HBase Configuration" link missing on the table details pages | Trivial | Operability | +| [HBASE-13011](https://issues.apache.org/jira/browse/HBASE-13011) | TestLoadIncrementalHFiles is flakey when using AsyncRpcClient as client implementation | Major | . | +| [HBASE-13049](https://issues.apache.org/jira/browse/HBASE-13049) | wal\_roll ruby command doesn't work. | Major | shell | +| [HBASE-13029](https://issues.apache.org/jira/browse/HBASE-13029) | Table state should be deleted from META as a last operation in DeleteTableHandler | Major | master | +| [HBASE-13007](https://issues.apache.org/jira/browse/HBASE-13007) | Fix the test timeouts being caused by ChoreService | Major | . | +| [HBASE-12920](https://issues.apache.org/jira/browse/HBASE-12920) | hadoopqa should compile with different hadoop versions | Major | . | +| [HBASE-12999](https://issues.apache.org/jira/browse/HBASE-12999) | Make foreground\_start return the correct exit code | Major | shell | +| [HBASE-13004](https://issues.apache.org/jira/browse/HBASE-13004) | Make possible to explain why HBaseTestingUtility.waitFor fails | Minor | test | +| [HBASE-12961](https://issues.apache.org/jira/browse/HBASE-12961) | Negative values in read and write region server metrics | Minor | regionserver | +| [HBASE-12964](https://issues.apache.org/jira/browse/HBASE-12964) | Add the ability for hbase-daemon.sh to start in the foreground | Major | . | +| [HBASE-7332](https://issues.apache.org/jira/browse/HBASE-7332) | [webui] HMaster webui should display the number of regions a table has. | Minor | UI | +| [HBASE-12951](https://issues.apache.org/jira/browse/HBASE-12951) | TestHCM.testConnectionClose is flakey when using AsyncRpcClient as client implementation | Major | IPC/RPC | +| [HBASE-12877](https://issues.apache.org/jira/browse/HBASE-12877) | Hbase documentation- a referenced link is not working | Minor | documentation | +| [HBASE-12922](https://issues.apache.org/jira/browse/HBASE-12922) | Post-asciidoc conversion fix-ups part 2 | Major | documentation | +| [HBASE-12902](https://issues.apache.org/jira/browse/HBASE-12902) | Post-asciidoc conversion fix-ups | Major | documentation | +| [HBASE-12903](https://issues.apache.org/jira/browse/HBASE-12903) | Fix configuration which enables secure bulk load | Major | Coprocessors, documentation | +| [HBASE-12871](https://issues.apache.org/jira/browse/HBASE-12871) | Document JDK versions supported by each release missing in new documentation | Minor | documentation | +| [HBASE-12845](https://issues.apache.org/jira/browse/HBASE-12845) | ByteBufferOutputStream should grow as direct buffer if the initial buffer is also direct BB | Minor | . | +| [HBASE-12858](https://issues.apache.org/jira/browse/HBASE-12858) | Remove unneeded files under src/main/docbkx | Major | documentation | +| [HBASE-11983](https://issues.apache.org/jira/browse/HBASE-11983) | HRegion constructors should not create HLog | Major | wal | +| [HBASE-12849](https://issues.apache.org/jira/browse/HBASE-12849) | LoadIncrementalHFiles should use unmanaged connection in branch-1 | Major | mapreduce | +| [HBASE-12777](https://issues.apache.org/jira/browse/HBASE-12777) | Multi-page book has broken links that work in the single-page version | Major | documentation | +| [HBASE-12838](https://issues.apache.org/jira/browse/HBASE-12838) | After HBASE-5162 RSRpcServices accidentally applies mutations twice | Major | . | +| [HBASE-12775](https://issues.apache.org/jira/browse/HBASE-12775) | CompressionTest ate my HFile (sigh!) | Major | test | +| [HBASE-12772](https://issues.apache.org/jira/browse/HBASE-12772) | TestPerColumnFamilyFlush failing | Major | test | +| [HBASE-12749](https://issues.apache.org/jira/browse/HBASE-12749) | Tighten HFileLink api to enable non-snapshot uses | Major | snapshots | +| [HBASE-12734](https://issues.apache.org/jira/browse/HBASE-12734) | TestPerColumnFamilyFlush.testCompareStoreFileCount is flakey | Minor | . | +| [HBASE-12703](https://issues.apache.org/jira/browse/HBASE-12703) | Cleanup TestClientPushback for repeatability | Minor | test | +| [HBASE-12688](https://issues.apache.org/jira/browse/HBASE-12688) | Update site with a bootstrap-based UI | Major | website | +| [HBASE-12682](https://issues.apache.org/jira/browse/HBASE-12682) | compaction thread throttle value is not correct in hbase-default.xml | Major | regionserver | +| [HBASE-12690](https://issues.apache.org/jira/browse/HBASE-12690) | list\_quotas command is failing with not able to load Java class | Major | shell | +| [HBASE-12687](https://issues.apache.org/jira/browse/HBASE-12687) | Book is missing styling | Major | documentation | +| [HBASE-12693](https://issues.apache.org/jira/browse/HBASE-12693) | [docs] nit fix in HBase and MapReduce section | Major | documentation | +| [HBASE-12677](https://issues.apache.org/jira/browse/HBASE-12677) | Update replication docs to clarify terminology | Major | documentation | +| [HBASE-9763](https://issues.apache.org/jira/browse/HBASE-9763) | Scan javadoc doesn't fully capture semantics of start and stop row | Minor | documentation | +| [HBASE-11153](https://issues.apache.org/jira/browse/HBASE-11153) | Document that http webUI's should redirect to https when enabled | Minor | documentation, master, regionserver, UI | +| [HBASE-12540](https://issues.apache.org/jira/browse/HBASE-12540) | TestRegionServerMetrics#testMobMetrics test failure | Major | test | +| [HBASE-12628](https://issues.apache.org/jira/browse/HBASE-12628) | Update instructions for running shell tests using maven. | Minor | documentation, shell | +| [HBASE-12553](https://issues.apache.org/jira/browse/HBASE-12553) | request value is not consistent for restoreSnapshot in audit logs | Minor | security | +| [HBASE-12548](https://issues.apache.org/jira/browse/HBASE-12548) | Improve debuggability of IntegrationTestTimeBoundedRequestsWithRegionReplicas | Minor | . | +| [HBASE-12603](https://issues.apache.org/jira/browse/HBASE-12603) | Remove javadoc warnings introduced due to removal of unused imports | Major | . | +| [HBASE-12474](https://issues.apache.org/jira/browse/HBASE-12474) | Incorrect handling of default namespace in user\_permission command. | Minor | . | +| [HBASE-12552](https://issues.apache.org/jira/browse/HBASE-12552) | listSnapshots should list only owned snapshots for non-super user | Major | snapshots | +| [HBASE-12073](https://issues.apache.org/jira/browse/HBASE-12073) | Shell command user\_permission fails on the table created by user if he is not global admin. | Minor | . | +| [HBASE-12535](https://issues.apache.org/jira/browse/HBASE-12535) | NPE in WALFactory close under contention for getInstance | Major | Replication, wal | +| [HBASE-12532](https://issues.apache.org/jira/browse/HBASE-12532) | TestFilter failing occasionally with ExitCodeException doing chmod since HBASE-10378 | Major | test | +| [HBASE-12421](https://issues.apache.org/jira/browse/HBASE-12421) | Clarify ACL concepts and best practices | Major | documentation, security | +| [HBASE-12488](https://issues.apache.org/jira/browse/HBASE-12488) | Small bug in publish\_hbase\_website.sh script | Minor | scripts | +| [HBASE-12347](https://issues.apache.org/jira/browse/HBASE-12347) | Fix the edge case where Hadoop QA's parsing of attached patches breaks the JIRA status checker in dev-support/rebase\_all\_git\_branches.sh | Minor | scripts | +| [HBASE-12409](https://issues.apache.org/jira/browse/HBASE-12409) | Add actual tunable parameters for finding optimal # of regions per RS | Major | documentation, Performance | +| [HBASE-12397](https://issues.apache.org/jira/browse/HBASE-12397) | CopyTable fails to compile with the Hadoop 1 profile | Major | . | +| [HBASE-12418](https://issues.apache.org/jira/browse/HBASE-12418) | Multiple branches for MOB feature breaking git for case insensitive filesystems | Blocker | . | +| [HBASE-12380](https://issues.apache.org/jira/browse/HBASE-12380) | TestRegionServerNoMaster#testMultipleOpen is flaky after HBASE-11760 | Major | test | +| [HBASE-12326](https://issues.apache.org/jira/browse/HBASE-12326) | Document scanner timeout workarounds in troubleshooting section | Major | documentation | +| [HBASE-12283](https://issues.apache.org/jira/browse/HBASE-12283) | Clean up some checkstyle errors | Major | . | +| [HBASE-12307](https://issues.apache.org/jira/browse/HBASE-12307) | Remove unused Imports in hbase-client and hbase-common | Minor | . | +| [HBASE-12192](https://issues.apache.org/jira/browse/HBASE-12192) | Remove EventHandlerListener | Major | master | +| [HBASE-12186](https://issues.apache.org/jira/browse/HBASE-12186) | Formatting error in Table 8.2. Examples of Visibility Expressions | Major | documentation | +| [HBASE-12216](https://issues.apache.org/jira/browse/HBASE-12216) | Lower closed region logging level | Minor | . | +| [HBASE-12201](https://issues.apache.org/jira/browse/HBASE-12201) | Close the writers in the MOB sweep tool | Minor | . | +| [HBASE-11998](https://issues.apache.org/jira/browse/HBASE-11998) | Document a workflow for cherry-picking a fix to a different branch | Major | documentation | +| [HBASE-12193](https://issues.apache.org/jira/browse/HBASE-12193) | Add missing docbook file to git | Major | documentation | +| [HBASE-12172](https://issues.apache.org/jira/browse/HBASE-12172) | Disable flakey TestRegionReplicaReplicationEndpoint and make fixing it a blocker on 1.0 | Major | test | +| [HBASE-11957](https://issues.apache.org/jira/browse/HBASE-11957) | Backport to 0.94 HBASE-5974 Scanner retry behavior with RPC timeout on next() seems incorrect | Critical | . | +| [HBASE-12030](https://issues.apache.org/jira/browse/HBASE-12030) | Wrong compaction report and assert when MOB compaction switches to minor | Critical | Compaction, regionserver | +| [HBASE-12005](https://issues.apache.org/jira/browse/HBASE-12005) | Split/merge fails if master restarts before PONR | Major | . | +| [HBASE-12027](https://issues.apache.org/jira/browse/HBASE-12027) | The ZooKeeperWatcher in HMobStore only uses the default conf | Major | . | +| [HBASE-11987](https://issues.apache.org/jira/browse/HBASE-11987) | Make zk-less table states backward compatible. | Major | . | +| [HBASE-11968](https://issues.apache.org/jira/browse/HBASE-11968) | If MOB is enabled, it should make sure hfile v3 is being used. | Major | . | +| [HBASE-11721](https://issues.apache.org/jira/browse/HBASE-11721) | jdiff script no longer works as usage instructions indicate | Major | scripts | +| [HBASE-8674](https://issues.apache.org/jira/browse/HBASE-8674) | JUnit and Surefire TRUNK-HBASE-2 plugins need a new home | Major | build | +| [HBASE-11855](https://issues.apache.org/jira/browse/HBASE-11855) | HBase handbook chapter 18.9 out of date | Minor | documentation | +| [HBASE-11689](https://issues.apache.org/jira/browse/HBASE-11689) | Track meta in transition | Major | Region Assignment | +| [HBASE-11834](https://issues.apache.org/jira/browse/HBASE-11834) | TestHRegionBusyWait.testParallelAppendWithMemStoreFlush fails sporadically | Major | test | +| [HBASE-11732](https://issues.apache.org/jira/browse/HBASE-11732) | Should not preemptively offline a region | Major | Region Assignment | +| [HBASE-11658](https://issues.apache.org/jira/browse/HBASE-11658) | Piped commands to hbase shell should return non-zero if shell command failed. | Major | shell | +| [HBASE-11333](https://issues.apache.org/jira/browse/HBASE-11333) | Remove deprecated class MetaMigrationConvertingToPB | Trivial | master | +| [HBASE-11661](https://issues.apache.org/jira/browse/HBASE-11661) | Quickstart chapter claims standalone mode has multiple processes | Minor | documentation | +| [HBASE-11629](https://issues.apache.org/jira/browse/HBASE-11629) | Operational concerns for Replication should call out ZooKeeper | Major | documentation, Replication | +| [HBASE-11640](https://issues.apache.org/jira/browse/HBASE-11640) | Add syntax highlighting support to HBase Ref Guide programlistings | Major | documentation | +| [HBASE-11648](https://issues.apache.org/jira/browse/HBASE-11648) | Typo of config: hbase.hstore.compaction.ratio in book.xml | Minor | Compaction | +| [HBASE-11539](https://issues.apache.org/jira/browse/HBASE-11539) | Expand info about contributing to and building documentation | Major | documentation | +| [HBASE-11316](https://issues.apache.org/jira/browse/HBASE-11316) | Expand info about compactions beyond HBASE-11120 | Major | Compaction, documentation | +| [HBASE-11522](https://issues.apache.org/jira/browse/HBASE-11522) | Move Replication information into the Ref Guide | Major | documentation | +| [HBASE-11560](https://issues.apache.org/jira/browse/HBASE-11560) | hbase.regionserver.global.memstore.size is documented twice | Major | . | +| [HBASE-11529](https://issues.apache.org/jira/browse/HBASE-11529) | Images and CSS still don't work properly on both html and html-single book | Major | documentation | +| [HBASE-11521](https://issues.apache.org/jira/browse/HBASE-11521) | Modify pom.xml to copy the images/ and css/ directories to the right location for the Ref Guide to see them correctly | Critical | documentation | +| [HBASE-8473](https://issues.apache.org/jira/browse/HBASE-8473) | add note to ref guide about snapshots and ec2 reverse dns requirements. | Major | documentation, snapshots | +| [HBASE-11499](https://issues.apache.org/jira/browse/HBASE-11499) | AsyncProcess.buildDetailedErrorMessage concatenates strings using + in a loop | Trivial | Client | +| [HBASE-11500](https://issues.apache.org/jira/browse/HBASE-11500) | Possible null pointer dereference of regionLocation in ReversedScannerCallable | Minor | Client | + + +### TESTS: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-20228](https://issues.apache.org/jira/browse/HBASE-20228) | [Umbrella] Verify 1.2.7 shell works against 2.0.0 server | Blocker | shell | +| [HBASE-20272](https://issues.apache.org/jira/browse/HBASE-20272) | TestAsyncTable#testCheckAndMutateWithTimeRange fails due to TableExistsException | Major | . | +| [HBASE-20107](https://issues.apache.org/jira/browse/HBASE-20107) | Add a test case for HBASE-14317 | Minor | wal | +| [HBASE-20052](https://issues.apache.org/jira/browse/HBASE-20052) | TestRegionOpen#testNonExistentRegionReplica fails due to NPE | Major | . | +| [HBASE-20031](https://issues.apache.org/jira/browse/HBASE-20031) | Unable to run integration test using mvn due to missing HBaseClassTestRule | Major | . | +| [HBASE-19949](https://issues.apache.org/jira/browse/HBASE-19949) | TestRSGroupsWithACL fails with ExceptionInInitializerError | Major | . | +| [HBASE-19869](https://issues.apache.org/jira/browse/HBASE-19869) | Wrong class name used in TestLockManager | Trivial | . | +| [HBASE-19832](https://issues.apache.org/jira/browse/HBASE-19832) | TestConfServlet#testWriteJson fails against hadoop3 due to spelling change | Minor | . | +| [HBASE-19514](https://issues.apache.org/jira/browse/HBASE-19514) | Use random port for TestJMXListener | Minor | . | +| [HBASE-19289](https://issues.apache.org/jira/browse/HBASE-19289) | CommonFSUtils$StreamLacksCapabilityException: hflush when running test against hadoop3 beta1 | Critical | . | +| [HBASE-19342](https://issues.apache.org/jira/browse/HBASE-19342) | fix TestTableBasedReplicationSourceManagerImpl#testRemovePeerMetricsCleanup | Major | test | +| [HBASE-19266](https://issues.apache.org/jira/browse/HBASE-19266) | TestAcidGuarantees should cover adaptive in-memory compaction | Minor | . | +| [HBASE-19288](https://issues.apache.org/jira/browse/HBASE-19288) | Intermittent test failure in TestHStore.testRunDoubleMemStoreCompactors | Major | test | +| [HBASE-19299](https://issues.apache.org/jira/browse/HBASE-19299) | Assert only one Connection is constructed when calculating splits in a MultiTableInputFormat | Minor | test | +| [HBASE-19273](https://issues.apache.org/jira/browse/HBASE-19273) | IntegrationTestBulkLoad#installSlowingCoproc() uses read-only HTableDescriptor | Major | . | +| [HBASE-19248](https://issues.apache.org/jira/browse/HBASE-19248) | TestZooKeeper#testMultipleZK fails due to missing method getKeepAliveZooKeeperWatcher | Critical | Zookeeper | +| [HBASE-19237](https://issues.apache.org/jira/browse/HBASE-19237) | TestMaster.testMasterOpsWhileSplitting fails | Major | . | +| [HBASE-16051](https://issues.apache.org/jira/browse/HBASE-16051) | TestScannerHeartbeatMessages fails on some machines | Major | test | +| [HBASE-19026](https://issues.apache.org/jira/browse/HBASE-19026) | TestLockProcedure#testRemoteNamespaceLockRecovery fails in master | Major | . | +| [HBASE-18902](https://issues.apache.org/jira/browse/HBASE-18902) | TestCoprocessorServiceBackwardCompatibility fails | Major | . | +| [HBASE-18632](https://issues.apache.org/jira/browse/HBASE-18632) | TestMultiParallel#testFlushCommitsWithAbort fails in master branch | Major | test | +| [HBASE-18147](https://issues.apache.org/jira/browse/HBASE-18147) | nightly job to check health of active branches | Major | community, test | +| [HBASE-17806](https://issues.apache.org/jira/browse/HBASE-17806) | TestRSGroups#testMoveServersAndTables is flaky in master branch | Major | . | +| [HBASE-17703](https://issues.apache.org/jira/browse/HBASE-17703) | TestThriftServerCmdLine is flaky in master branch | Major | . | +| [HBASE-17672](https://issues.apache.org/jira/browse/HBASE-17672) | "Grant should set access rights appropriately" test fails | Major | . | +| [HBASE-17657](https://issues.apache.org/jira/browse/HBASE-17657) | TestZKAsyncRegistry is flaky | Major | . | +| [HBASE-17628](https://issues.apache.org/jira/browse/HBASE-17628) | Local mode of mini cluster shouldn't use hdfs | Minor | . | +| [HBASE-17474](https://issues.apache.org/jira/browse/HBASE-17474) | Reduce frequency of NoSuchMethodException when calling setStoragePolicy() | Minor | . | +| [HBASE-17371](https://issues.apache.org/jira/browse/HBASE-17371) | Enhance 'HBaseContextSuite @ distributedScan to test HBase client' with filter | Minor | . | +| [HBASE-17246](https://issues.apache.org/jira/browse/HBASE-17246) | TestSerialReplication#testRegionMerge fails in master branch | Major | . | +| [HBASE-17189](https://issues.apache.org/jira/browse/HBASE-17189) | TestMasterObserver#wasModifyTableActionCalled uses wrong variables | Minor | test | +| [HBASE-17080](https://issues.apache.org/jira/browse/HBASE-17080) | rest.TestTableResource fails in master branch | Major | . | +| [HBASE-17120](https://issues.apache.org/jira/browse/HBASE-17120) | TestAssignmentListener#testAssignmentListener fails | Minor | . | +| [HBASE-16975](https://issues.apache.org/jira/browse/HBASE-16975) | Disable two subtests of TestSerialReplication | Minor | . | +| [HBASE-16274](https://issues.apache.org/jira/browse/HBASE-16274) | Add more peer tests to replication\_admin\_test | Minor | . | +| [HBASE-16781](https://issues.apache.org/jira/browse/HBASE-16781) | Fix flaky TestMasterProcedureWalLease | Minor | proc-v2, test | +| [HBASE-16794](https://issues.apache.org/jira/browse/HBASE-16794) | TestDispatchMergingRegionsProcedure#testMergeRegionsConcurrently is flaky | Minor | test | +| [HBASE-16791](https://issues.apache.org/jira/browse/HBASE-16791) | Fix TestDispatchMergingRegionsProcedure | Minor | test | +| [HBASE-16777](https://issues.apache.org/jira/browse/HBASE-16777) | Fix flaky TestMasterProcedureEvents | Trivial | proc-v2, test | +| [HBASE-16778](https://issues.apache.org/jira/browse/HBASE-16778) | Move testIllegalTableDescriptor out from TestFromClientSide | Trivial | test | +| [HBASE-16776](https://issues.apache.org/jira/browse/HBASE-16776) | Remove duplicated versions of countRow() in tests | Trivial | test | +| [HBASE-16725](https://issues.apache.org/jira/browse/HBASE-16725) | Don't let flushThread hang in TestHRegion | Minor | . | +| [HBASE-16671](https://issues.apache.org/jira/browse/HBASE-16671) | Split TestExportSnapshot | Minor | snapshots, test | +| [HBASE-16349](https://issues.apache.org/jira/browse/HBASE-16349) | TestClusterId may hang during cluster shutdown | Minor | . | +| [HBASE-16634](https://issues.apache.org/jira/browse/HBASE-16634) | Speedup TestExportSnapshot | Minor | snapshots, test | +| [HBASE-16639](https://issues.apache.org/jira/browse/HBASE-16639) | TestProcedureInMemoryChore#testChoreAddAndRemove occasionally fails | Minor | . | +| [HBASE-16418](https://issues.apache.org/jira/browse/HBASE-16418) | Reduce duration of sleep waiting for region reopen in IntegrationTestBulkLoad#installSlowingCoproc() | Minor | . | +| [HBASE-16185](https://issues.apache.org/jira/browse/HBASE-16185) | TestReplicationSmallTests fails in master branch | Major | . | +| [HBASE-16049](https://issues.apache.org/jira/browse/HBASE-16049) | TestRowProcessorEndpoint is failing on Apache Builds | Major | . | +| [HBASE-15939](https://issues.apache.org/jira/browse/HBASE-15939) | Two shell test failures on master | Major | . | +| [HBASE-15923](https://issues.apache.org/jira/browse/HBASE-15923) | Shell rows counter test fails | Major | . | +| [HBASE-15760](https://issues.apache.org/jira/browse/HBASE-15760) | TestBlockEvictionFromClient#testParallelGetsAndScanWithWrappedRegionScanner fails in master branch | Minor | . | +| [HBASE-15679](https://issues.apache.org/jira/browse/HBASE-15679) | Assertion on wrong variable in TestReplicationThrottler#testThrottling | Minor | . | +| [HBASE-13372](https://issues.apache.org/jira/browse/HBASE-13372) | Unit tests for SplitTransaction and RegionMergeTransaction listeners | Major | . | +| [HBASE-15420](https://issues.apache.org/jira/browse/HBASE-15420) | TestCacheConfig failed after HBASE-15338 | Minor | test | +| [HBASE-15192](https://issues.apache.org/jira/browse/HBASE-15192) | TestRegionMergeTransactionOnCluster#testCleanMergeReference is flaky | Minor | . | +| [HBASE-14584](https://issues.apache.org/jira/browse/HBASE-14584) | TestNamespacesInstanceModel fails on jdk8 | Major | REST, test | +| [HBASE-14758](https://issues.apache.org/jira/browse/HBASE-14758) | Add UT case for unchecked error/exception thrown in AsyncProcess#sendMultiAction | Minor | Client, test | +| [HBASE-14728](https://issues.apache.org/jira/browse/HBASE-14728) | TestRowCounter is broken in master | Major | . | +| [HBASE-14688](https://issues.apache.org/jira/browse/HBASE-14688) | Cleanup MOB tests | Trivial | mob | +| [HBASE-14466](https://issues.apache.org/jira/browse/HBASE-14466) | Remove duplicated code from MOB snapshot tests | Trivial | mob, test | +| [HBASE-14344](https://issues.apache.org/jira/browse/HBASE-14344) | Add timeouts to TestHttpServerLifecycle | Minor | test | +| [HBASE-14310](https://issues.apache.org/jira/browse/HBASE-14310) | test-patch.sh should handle spurious non-zero exit code from maven | Minor | . | +| [HBASE-14293](https://issues.apache.org/jira/browse/HBASE-14293) | TestStochasticBalancerJmxMetrics intermittently fails due to port conflict | Minor | . | +| [HBASE-14277](https://issues.apache.org/jira/browse/HBASE-14277) | TestRegionServerHostname.testRegionServerHostname may fail at host with a case sensitive name | Minor | test | +| [HBASE-14210](https://issues.apache.org/jira/browse/HBASE-14210) | Create test for cell level ACLs involving user group | Major | test | +| [HBASE-14200](https://issues.apache.org/jira/browse/HBASE-14200) | Separate RegionReplica subtests of TestStochasticLoadBalancer into TestStochasticLoadBalancer2 | Minor | . | +| [HBASE-14197](https://issues.apache.org/jira/browse/HBASE-14197) | TestRegionServerHostname#testInvalidRegionServerHostnameAbortsServer fails in Jenkins | Minor | . | +| [HBASE-13940](https://issues.apache.org/jira/browse/HBASE-13940) | IntegrationTestBulkLoad needs option to specify output folders used by test | Major | integration tests | +| [HBASE-13609](https://issues.apache.org/jira/browse/HBASE-13609) | TestFastFail is still failing | Major | test | +| [HBASE-13591](https://issues.apache.org/jira/browse/HBASE-13591) | TestHBaseFsck is flakey | Major | hbck | +| [HBASE-13413](https://issues.apache.org/jira/browse/HBASE-13413) | Create an integration test for Replication | Minor | integration tests | +| [HBASE-13280](https://issues.apache.org/jira/browse/HBASE-13280) | TestSecureRPC failed | Minor | . | +| [HBASE-13182](https://issues.apache.org/jira/browse/HBASE-13182) | Test NamespaceAuditor/AccessController create/delete table is flaky | Minor | test | +| [HBASE-13179](https://issues.apache.org/jira/browse/HBASE-13179) | TestMasterObserver deleteTable is flaky | Minor | test | +| [HBASE-13106](https://issues.apache.org/jira/browse/HBASE-13106) | Ensure endpoint-only table coprocessors can be dynamically loaded | Trivial | . | +| [HBASE-12992](https://issues.apache.org/jira/browse/HBASE-12992) | TestChoreService doesn't close services, that can break test on slow virtual hosts. | Major | . | +| [HBASE-12764](https://issues.apache.org/jira/browse/HBASE-12764) | TestPerColumnFamilyFlush#testCompareStoreFileCount may fail due to new table not available | Minor | . | +| [HBASE-11867](https://issues.apache.org/jira/browse/HBASE-11867) | TestSplitLogManager.testUnassignedTimeout is flaky | Minor | . | +| [HBASE-11866](https://issues.apache.org/jira/browse/HBASE-11866) | TestDistributedLogSplitting is flaky | Minor | . | +| [HBASE-11673](https://issues.apache.org/jira/browse/HBASE-11673) | TestIOFencing#testFencingAroundCompactionAfterWALSync fails | Major | . | +| [HBASE-4744](https://issues.apache.org/jira/browse/HBASE-4744) | Remove @Ignore for testLogRollAfterSplitStart | Critical | . | +| [HBASE-11616](https://issues.apache.org/jira/browse/HBASE-11616) | TestNamespaceUpgrade fails in trunk | Major | . | +| [HBASE-11039](https://issues.apache.org/jira/browse/HBASE-11039) | [VisibilityController] Integration test for labeled data set mixing and filtered excise | Critical | . | +| [HBASE-11461](https://issues.apache.org/jira/browse/HBASE-11461) | Compilation errors are not posted back to JIRA during QA run | Minor | . | + + +### SUB-TASKS: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-20059](https://issues.apache.org/jira/browse/HBASE-20059) | Make sure documentation is updated for the offheap Bucket cache usage | Critical | documentation | +| [HBASE-20454](https://issues.apache.org/jira/browse/HBASE-20454) | [DOC] Add note on perf to upgrade section | Major | . | +| [HBASE-20347](https://issues.apache.org/jira/browse/HBASE-20347) | [DOC] upgrade section should warn about logging changes | Critical | documentation, logging | +| [HBASE-20349](https://issues.apache.org/jira/browse/HBASE-20349) | [DOC] upgrade guide should call out removal of prefix-tree data block encoding | Critical | documentation | +| [HBASE-17554](https://issues.apache.org/jira/browse/HBASE-17554) | Figure 2.0.0 Hadoop Version Support; update refguide | Blocker | documentation | +| [HBASE-20253](https://issues.apache.org/jira/browse/HBASE-20253) | Error message is missing for restore\_snapshot | Minor | shell | +| [HBASE-20380](https://issues.apache.org/jira/browse/HBASE-20380) | Put up 2.0.0RC0 | Major | . | +| [HBASE-20149](https://issues.apache.org/jira/browse/HBASE-20149) | Purge dev javadoc from bin tarball (or make a separate tarball of javadoc) | Critical | build, community, documentation | +| [HBASE-18828](https://issues.apache.org/jira/browse/HBASE-18828) | [2.0] Generate CHANGES.txt | Blocker | . | +| [HBASE-20287](https://issues.apache.org/jira/browse/HBASE-20287) | After cluster startup list\_regions command fails on disabled table | Minor | shell | +| [HBASE-20258](https://issues.apache.org/jira/browse/HBASE-20258) | Shell hangs when scanning a disabled table | Major | . | +| [HBASE-20354](https://issues.apache.org/jira/browse/HBASE-20354) | [DOC] quickstart guide needs to include note about durability checks for standalone mode | Blocker | documentation, hadoop3 | +| [HBASE-17730](https://issues.apache.org/jira/browse/HBASE-17730) | [DOC] Migration to 2.0 for coprocessors | Blocker | documentation, migration | +| [HBASE-20337](https://issues.apache.org/jira/browse/HBASE-20337) | Update the doc on how to setup shortcircuit reads; its stale | Major | . | +| [HBASE-20298](https://issues.apache.org/jira/browse/HBASE-20298) | Doc change in read/write/total accounting metrics | Critical | documentation | +| [HBASE-16848](https://issues.apache.org/jira/browse/HBASE-16848) | Usage for show\_peer\_tableCFs command doesn't include peer | Minor | . | +| [HBASE-20254](https://issues.apache.org/jira/browse/HBASE-20254) | Incorrect help message for merge\_region | Minor | shell | +| [HBASE-17819](https://issues.apache.org/jira/browse/HBASE-17819) | Reduce the heap overhead for BucketCache | Critical | BucketCache | +| [HBASE-20245](https://issues.apache.org/jira/browse/HBASE-20245) | HTrace commands do not work | Major | . | +| [HBASE-20241](https://issues.apache.org/jira/browse/HBASE-20241) | splitormerge\_enabled does not work | Critical | shell | +| [HBASE-20202](https://issues.apache.org/jira/browse/HBASE-20202) | [AMv2] Don't move region if its a split parent or offlined | Critical | amv2 | +| [HBASE-20247](https://issues.apache.org/jira/browse/HBASE-20247) | Set version as 2.0.0 in branch-2.0 in prep for first RC | Major | . | +| [HBASE-20232](https://issues.apache.org/jira/browse/HBASE-20232) | [LOGGING] Formatting around close and flush | Major | . | +| [HBASE-20190](https://issues.apache.org/jira/browse/HBASE-20190) | Fix default for MIGRATE\_TABLE\_STATE\_FROM\_ZK\_KEY | Critical | . | +| [HBASE-20180](https://issues.apache.org/jira/browse/HBASE-20180) | Avoid Class::newInstance | Major | . | +| [HBASE-20178](https://issues.apache.org/jira/browse/HBASE-20178) | [AMv2] Throw exception if hostile environment | Major | amv2 | +| [HBASE-20173](https://issues.apache.org/jira/browse/HBASE-20173) | [AMv2] DisableTableProcedure concurrent to ServerCrashProcedure can deadlock | Critical | amv2 | +| [HBASE-19093](https://issues.apache.org/jira/browse/HBASE-19093) | Check Admin/Table to ensure all operations go via AccessControl | Blocker | . | +| [HBASE-19114](https://issues.apache.org/jira/browse/HBASE-19114) | Split out o.a.h.h.zookeeper from hbase-server and hbase-client | Major | . | +| [HBASE-18758](https://issues.apache.org/jira/browse/HBASE-18758) | [TEST][compat 1-2] Test delegation tokens continue to work when hbase1 going against hbase2 cluster | Critical | API | +| [HBASE-20113](https://issues.apache.org/jira/browse/HBASE-20113) | Move branch-2 version from 2.0.0-beta-2-SNAPSHOT to 2.0.0-beta-2 | Major | . | +| [HBASE-20100](https://issues.apache.org/jira/browse/HBASE-20100) | TestEnableTableProcedure flakey | Major | amv2, flakey | +| [HBASE-19400](https://issues.apache.org/jira/browse/HBASE-19400) | Add missing security checks in MasterRpcServices | Major | . | +| [HBASE-20069](https://issues.apache.org/jira/browse/HBASE-20069) | fix existing findbugs errors in hbase-server | Critical | findbugs | +| [HBASE-20036](https://issues.apache.org/jira/browse/HBASE-20036) | TestAvoidCellReferencesIntoShippedBlocks timed out | Major | . | +| [HBASE-20083](https://issues.apache.org/jira/browse/HBASE-20083) | Fix findbugs error for ReplicationSyncUp | Major | findbugs | +| [HBASE-20019](https://issues.apache.org/jira/browse/HBASE-20019) | Document the ColumnValueFilter | Minor | documentation | +| [HBASE-20048](https://issues.apache.org/jira/browse/HBASE-20048) | Revert serial replication feature | Blocker | Replication | +| [HBASE-20044](https://issues.apache.org/jira/browse/HBASE-20044) | TestClientClusterStatus is flakey | Major | flakey | +| [HBASE-19554](https://issues.apache.org/jira/browse/HBASE-19554) | AbstractTestDLS.testThreeRSAbort sometimes fails in pre commit | Major | Recovery, wal | +| [HBASE-20038](https://issues.apache.org/jira/browse/HBASE-20038) | TestLockProcedure.testTimeout is flakey | Major | proc-v2, test | +| [HBASE-20041](https://issues.apache.org/jira/browse/HBASE-20041) | cannot start mini mapreduce cluster for ITs | Major | . | +| [HBASE-20035](https://issues.apache.org/jira/browse/HBASE-20035) | .TestQuotaStatusRPCs.testQuotaStatusFromMaster failed with NPEs and RuntimeExceptions | Major | . | +| [HBASE-20039](https://issues.apache.org/jira/browse/HBASE-20039) | move testhbasetestingutility mr tests to hbase-mapreduce | Major | . | +| [HBASE-20021](https://issues.apache.org/jira/browse/HBASE-20021) | TestFromClientSideWithCoprocessor is flakey | Major | . | +| [HBASE-20029](https://issues.apache.org/jira/browse/HBASE-20029) | @Ignore TestQuotaThrottle and TestReplicasClient#testCancelOfMultiGet | Major | . | +| [HBASE-20015](https://issues.apache.org/jira/browse/HBASE-20015) | TestMergeTableRegionsProcedure and TestRegionMergeTransactionOnCluster flakey | Major | flakey | +| [HBASE-20013](https://issues.apache.org/jira/browse/HBASE-20013) | TestZKPermissionWatcher is flakey | Major | flakey | +| [HBASE-20014](https://issues.apache.org/jira/browse/HBASE-20014) | TestAdmin1 Times out | Major | . | +| [HBASE-19978](https://issues.apache.org/jira/browse/HBASE-19978) | The keepalive logic is incomplete in ProcedureExecutor | Major | . | +| [HBASE-20011](https://issues.apache.org/jira/browse/HBASE-20011) | Disable TestRestoreSnapshotFromClientWithRegionReplicas; it is flakey. Needs attention. | Major | read replicas | +| [HBASE-19903](https://issues.apache.org/jira/browse/HBASE-19903) | Split TestShell so it will not time out | Major | shell, test | +| [HBASE-20000](https://issues.apache.org/jira/browse/HBASE-20000) | Remove the quantum logic in FairQueue, always put high priority queue in front | Major | proc-v2 | +| [HBASE-19116](https://issues.apache.org/jira/browse/HBASE-19116) | Currently the tail of hfiles with CellComparator\* classname makes it so hbase1 can't open hbase2 written hfiles; fix | Critical | HFile, migration | +| [HBASE-19965](https://issues.apache.org/jira/browse/HBASE-19965) | Fix flaky TestAsyncRegionAdminApi | Critical | . | +| [HBASE-19960](https://issues.apache.org/jira/browse/HBASE-19960) | Doc test timeouts and test categories in hbase2 | Major | . | +| [HBASE-19942](https://issues.apache.org/jira/browse/HBASE-19942) | Fix flaky TestSimpleRpcScheduler | Major | . | +| [HBASE-19956](https://issues.apache.org/jira/browse/HBASE-19956) | Remove category as a consideration timing out tests; set all test to timeout at 10minutes regardless | Major | . | +| [HBASE-19951](https://issues.apache.org/jira/browse/HBASE-19951) | Cleanup the explicit timeout value for test method | Major | . | +| [HBASE-19791](https://issues.apache.org/jira/browse/HBASE-19791) | TestZKAsyncRegistry hangs | Critical | . | +| [HBASE-19840](https://issues.apache.org/jira/browse/HBASE-19840) | Flakey TestMetaWithReplicas | Major | flakey, test | +| [HBASE-19927](https://issues.apache.org/jira/browse/HBASE-19927) | TestFullLogReconstruction flakey | Major | wal | +| [HBASE-19841](https://issues.apache.org/jira/browse/HBASE-19841) | Tests against hadoop3 fail with StreamLacksCapabilityException | Major | . | +| [HBASE-19944](https://issues.apache.org/jira/browse/HBASE-19944) | Fix timeout TestVisibilityLabelsWithCustomVisLabService | Major | . | +| [HBASE-19931](https://issues.apache.org/jira/browse/HBASE-19931) | TestMetaWithReplicas failing 100% of the time in testHBaseFsckWithMetaReplicas | Major | . | +| [HBASE-19837](https://issues.apache.org/jira/browse/HBASE-19837) | Flakey TestRegionLoad | Major | flakey, test | +| [HBASE-19803](https://issues.apache.org/jira/browse/HBASE-19803) | False positive for the HBASE-Find-Flaky-Tests job | Major | . | +| [HBASE-19910](https://issues.apache.org/jira/browse/HBASE-19910) | TestBucketCache TimesOut | Major | . | +| [HBASE-19916](https://issues.apache.org/jira/browse/HBASE-19916) | TestCacheOnWrite Times Out | Major | . | +| [HBASE-19914](https://issues.apache.org/jira/browse/HBASE-19914) | Refactor TestVisibilityLabelsOnNewVersionBehaviorTable | Major | test | +| [HBASE-19868](https://issues.apache.org/jira/browse/HBASE-19868) | TestCoprocessorWhitelistMasterObserver is flakey | Major | flakey, test | +| [HBASE-19908](https://issues.apache.org/jira/browse/HBASE-19908) | TestCoprocessorShortCircuitRPC Timeout.... | Major | . | +| [HBASE-19909](https://issues.apache.org/jira/browse/HBASE-19909) | TestRegionLocationFinder Timeout | Major | . | +| [HBASE-19928](https://issues.apache.org/jira/browse/HBASE-19928) | TestVisibilityLabelsOnNewVersionBehaviorTable fails | Major | test | +| [HBASE-19918](https://issues.apache.org/jira/browse/HBASE-19918) | Promote TestAsyncClusterAdminApi to LargeTests | Major | test | +| [HBASE-19896](https://issues.apache.org/jira/browse/HBASE-19896) | Fix ScanInfo.customize() to update only the requested options | Major | Coprocessors | +| [HBASE-19895](https://issues.apache.org/jira/browse/HBASE-19895) | Add keepDeletedCells option in ScanOptions for customizing scanInfo in pre-hooks | Major | Coprocessors | +| [HBASE-19913](https://issues.apache.org/jira/browse/HBASE-19913) | Split TestStochasticLoadBalancer2 | Major | test | +| [HBASE-19839](https://issues.apache.org/jira/browse/HBASE-19839) | Flakey TestMergeTableRegionsProcedure & TestSplitTableRegionProcedure | Major | flakey, test | +| [HBASE-19911](https://issues.apache.org/jira/browse/HBASE-19911) | Convert some tests from small to medium because they are timing out: TestNettyRpcServer, TestClientClusterStatus, TestCheckTestClasses | Major | . | +| [HBASE-19887](https://issues.apache.org/jira/browse/HBASE-19887) | Do not overwrite the surefire junit listener property in the pom of sub modules | Major | build | +| [HBASE-19891](https://issues.apache.org/jira/browse/HBASE-19891) | Up nightly test run timeout from 6 hours to 8 | Major | . | +| [HBASE-19811](https://issues.apache.org/jira/browse/HBASE-19811) | Fix findbugs and error-prone warnings in hbase-server (branch-2) | Major | . | +| [HBASE-19885](https://issues.apache.org/jira/browse/HBASE-19885) | Promote TestAssignmentManager to LargeTests | Major | . | +| [HBASE-19866](https://issues.apache.org/jira/browse/HBASE-19866) | TestRegionServerReportForDuty doesn't timeout | Major | rpc | +| [HBASE-19882](https://issues.apache.org/jira/browse/HBASE-19882) | Promote TestProcedureManager to MediumTests | Major | test | +| [HBASE-19877](https://issues.apache.org/jira/browse/HBASE-19877) | hbase-common and hbase-zookeeper don't add the log4j.properties to the resource path for testing | Critical | test | +| [HBASE-19870](https://issues.apache.org/jira/browse/HBASE-19870) | Fix the NPE in ReadOnlyZKClient#run | Major | . | +| [HBASE-19881](https://issues.apache.org/jira/browse/HBASE-19881) | Promote TestRegionReplicaReplicationEndpoint to LargeTests | Major | test | +| [HBASE-19880](https://issues.apache.org/jira/browse/HBASE-19880) | Promote TestFuzzyRowFilterEndToEnd to LargeTests | Major | test | +| [HBASE-19879](https://issues.apache.org/jira/browse/HBASE-19879) | Promote TestAcidGuaranteesXXX to LargeTests | Major | test | +| [HBASE-19867](https://issues.apache.org/jira/browse/HBASE-19867) | Split TestStochasticLoadBalancer into several small tests | Major | test | +| [HBASE-19862](https://issues.apache.org/jira/browse/HBASE-19862) | Fix TestTokenAuthentication - fake RegionCoprocessorEnvironment is not of type HasRegionServerServices | Major | . | +| [HBASE-19846](https://issues.apache.org/jira/browse/HBASE-19846) | Fix findbugs and error-prone warnings in hbase-rest (branch-2) | Major | . | +| [HBASE-19845](https://issues.apache.org/jira/browse/HBASE-19845) | Fix findbugs and error-prone warnings in hbase-rsgroup (branch-2) | Major | . | +| [HBASE-19847](https://issues.apache.org/jira/browse/HBASE-19847) | Fix findbugs and error-prone warnings in hbase-thrift (branch-2) | Major | . | +| [HBASE-19827](https://issues.apache.org/jira/browse/HBASE-19827) | Addendum for Flakey TestAssignmentManager | Major | flakey, test | +| [HBASE-18963](https://issues.apache.org/jira/browse/HBASE-18963) | Remove MultiRowMutationProcessor and implement mutateRows... methods using batchMutate() | Major | regionserver | +| [HBASE-19527](https://issues.apache.org/jira/browse/HBASE-19527) | Make ExecutorService threads daemon=true. | Major | . | +| [HBASE-19810](https://issues.apache.org/jira/browse/HBASE-19810) | Fix findbugs and error-prone warnings in hbase-metrics (branch-2) | Major | . | +| [HBASE-19809](https://issues.apache.org/jira/browse/HBASE-19809) | Fix findbugs and error-prone warnings in hbase-procedure (branch-2) | Major | . | +| [HBASE-19793](https://issues.apache.org/jira/browse/HBASE-19793) | Minor improvements on Master/RS startup | Major | . | +| [HBASE-19795](https://issues.apache.org/jira/browse/HBASE-19795) | Move the tests which only need zookeeper in TestZooKeeper to hbase-zookeeper module | Major | . | +| [HBASE-19772](https://issues.apache.org/jira/browse/HBASE-19772) | Do not close connection to zk when there are still pending request in ReadOnlyZKClient | Major | Zookeeper | +| [HBASE-19787](https://issues.apache.org/jira/browse/HBASE-19787) | Fix or disable tests broken in branch-2 so can cut beta-1 | Critical | . | +| [HBASE-19746](https://issues.apache.org/jira/browse/HBASE-19746) | Add default impl to Cell#getType | Critical | . | +| [HBASE-19743](https://issues.apache.org/jira/browse/HBASE-19743) | Disable TestMemstoreLABWithoutPool | Major | test | +| [HBASE-19731](https://issues.apache.org/jira/browse/HBASE-19731) | TestFromClientSide#testCheckAndDeleteWithCompareOp and testNullQualifier are flakey | Critical | test | +| [HBASE-19604](https://issues.apache.org/jira/browse/HBASE-19604) | Fix Checkstyle errors in hbase-protocol-shaded | Minor | . | +| [HBASE-19581](https://issues.apache.org/jira/browse/HBASE-19581) | Fix Checkstyle error in hbase-external-blockcache | Trivial | . | +| [HBASE-19667](https://issues.apache.org/jira/browse/HBASE-19667) | Get rid of MasterEnvironment#supportGroupCPs | Major | Coprocessors | +| [HBASE-19670](https://issues.apache.org/jira/browse/HBASE-19670) | Workaround: Purge User API building from branch-2 so can make a beta-1 | Major | website | +| [HBASE-19428](https://issues.apache.org/jira/browse/HBASE-19428) | Deprecate the compareTo(Row) | Major | . | +| [HBASE-19282](https://issues.apache.org/jira/browse/HBASE-19282) | CellChunkMap Benchmarking and User Interface | Major | . | +| [HBASE-19660](https://issues.apache.org/jira/browse/HBASE-19660) | Up default retries from 10 to 15 and blocking store files limit from 10 to 16 | Major | . | +| [HBASE-19133](https://issues.apache.org/jira/browse/HBASE-19133) | Transfer big cells or upserted/appended cells into MSLAB upon flattening to CellChunkMap | Major | . | +| [HBASE-19653](https://issues.apache.org/jira/browse/HBASE-19653) | Reduce the default hbase.client.start.log.errors.counter | Trivial | defaults | +| [HBASE-19626](https://issues.apache.org/jira/browse/HBASE-19626) | Rename Cell.DataType to Cell.Type | Minor | . | +| [HBASE-19648](https://issues.apache.org/jira/browse/HBASE-19648) | Move branch-2 version from 2.0.0-beta-1-SNAPSHOT to 2.0.0-beta-1 | Major | . | +| [HBASE-19609](https://issues.apache.org/jira/browse/HBASE-19609) | Fix Checkstyle errors in hbase-metrics | Minor | metrics | +| [HBASE-19628](https://issues.apache.org/jira/browse/HBASE-19628) | ByteBufferCell should extend ExtendedCell | Major | . | +| [HBASE-19629](https://issues.apache.org/jira/browse/HBASE-19629) | RawCell#getTags should return the Iterator\ in order to avoid iterating through whole tag array at once | Major | . | +| [HBASE-19605](https://issues.apache.org/jira/browse/HBASE-19605) | Fix Checkstyle errors in hbase-metrics-api | Minor | metrics | +| [HBASE-19602](https://issues.apache.org/jira/browse/HBASE-19602) | Cleanup the usage of ReplicationAdmin from document | Minor | . | +| [HBASE-19502](https://issues.apache.org/jira/browse/HBASE-19502) | Make sure we have closed all StoreFileScanners if we fail to open any StoreFileScanners | Major | regionserver, Scanners | +| [HBASE-19591](https://issues.apache.org/jira/browse/HBASE-19591) | Cleanup the usage of ReplicationAdmin from hbase-shell | Major | . | +| [HBASE-10092](https://issues.apache.org/jira/browse/HBASE-10092) | Move to slf4j | Critical | . | +| [HBASE-19575](https://issues.apache.org/jira/browse/HBASE-19575) | add copy constructor to Mutation | Major | . | +| [HBASE-19566](https://issues.apache.org/jira/browse/HBASE-19566) | Fix Checkstyle errors in hbase-client-project | Trivial | . | +| [HBASE-19567](https://issues.apache.org/jira/browse/HBASE-19567) | ClassNotFoundException: org.apache.hadoop.hbase.KeyValue$RawBytesComparator starting 2.0.0 over a 0.98.25 data. | Major | HFile | +| [HBASE-19468](https://issues.apache.org/jira/browse/HBASE-19468) | FNFE during scans and flushes | Critical | regionserver, Scanners | +| [HBASE-19556](https://issues.apache.org/jira/browse/HBASE-19556) | Remove TestAssignmentManager#testGoodSplit, which no longer make sense | Minor | . | +| [HBASE-19494](https://issues.apache.org/jira/browse/HBASE-19494) | Create simple WALKey filter that can be plugged in on the Replication Sink | Major | Replication | +| [HBASE-19480](https://issues.apache.org/jira/browse/HBASE-19480) | Enable Checkstyle in hbase-annotations | Trivial | . | +| [HBASE-19481](https://issues.apache.org/jira/browse/HBASE-19481) | Enable Checkstyle in hbase-error-prone | Trivial | . | +| [HBASE-19538](https://issues.apache.org/jira/browse/HBASE-19538) | Remove unnecessary semicolons in hbase-client | Minor | . | +| [HBASE-19539](https://issues.apache.org/jira/browse/HBASE-19539) | Remove unnecessary semicolons in hbase-common | Minor | . | +| [HBASE-18440](https://issues.apache.org/jira/browse/HBASE-18440) | ITs and Actions modify immutable TableDescriptors | Major | integration tests | +| [HBASE-19112](https://issues.apache.org/jira/browse/HBASE-19112) | Suspect methods on Cell to be deprecated | Blocker | Client | +| [HBASE-19474](https://issues.apache.org/jira/browse/HBASE-19474) | Bring down number of Checkstyle errors in hbase-zookeeper | Minor | Zookeeper | +| [HBASE-19479](https://issues.apache.org/jira/browse/HBASE-19479) | Fix Checkstyle error in hbase-shell | Trivial | shell | +| [HBASE-19497](https://issues.apache.org/jira/browse/HBASE-19497) | Fix findbugs and error-prone warnings in hbase-common (branch-2) | Major | . | +| [HBASE-19498](https://issues.apache.org/jira/browse/HBASE-19498) | Fix findbugs and error-prone warnings in hbase-client (branch-2) | Major | . | +| [HBASE-19272](https://issues.apache.org/jira/browse/HBASE-19272) | Deal with HBCK tests disabled by HBASE-14614 AMv2 when HBCK works again... | Major | hbck | +| [HBASE-15536](https://issues.apache.org/jira/browse/HBASE-15536) | Make AsyncFSWAL as our default WAL | Critical | wal | +| [HBASE-19505](https://issues.apache.org/jira/browse/HBASE-19505) | Disable ByteBufferPool by default at HM | Major | . | +| [HBASE-19462](https://issues.apache.org/jira/browse/HBASE-19462) | Deprecate all addImmutable methods in Put | Major | . | +| [HBASE-19000](https://issues.apache.org/jira/browse/HBASE-19000) | Group multiple block cache clear requests per server | Major | . | +| [HBASE-19213](https://issues.apache.org/jira/browse/HBASE-19213) | Align check and mutate operations in Table and AsyncTable | Minor | API | +| [HBASE-19427](https://issues.apache.org/jira/browse/HBASE-19427) | Add TimeRange support into Append to optimize for counters | Major | . | +| [HBASE-16890](https://issues.apache.org/jira/browse/HBASE-16890) | Analyze the performance of AsyncWAL and fix the same | Blocker | wal | +| [HBASE-19375](https://issues.apache.org/jira/browse/HBASE-19375) | Fix import order in hbase-thrift | Trivial | Thrift | +| [HBASE-19373](https://issues.apache.org/jira/browse/HBASE-19373) | Fix Checkstyle error in hbase-annotations | Trivial | . | +| [HBASE-19360](https://issues.apache.org/jira/browse/HBASE-19360) | Remove unused imports from hbase-zookeeper module | Minor | Zookeeper | +| [HBASE-19301](https://issues.apache.org/jira/browse/HBASE-19301) | Provide way for CPs to create short circuited connection with custom configurations | Major | Coprocessors | +| [HBASE-19439](https://issues.apache.org/jira/browse/HBASE-19439) | Mark ShortCircuitMasterConnection with InterfaceAudience Private | Major | . | +| [HBASE-19430](https://issues.apache.org/jira/browse/HBASE-19430) | Remove the SettableTimestamp and SettableSequenceId | Major | . | +| [HBASE-19295](https://issues.apache.org/jira/browse/HBASE-19295) | The Configuration returned by CPEnv should be read-only. | Major | Coprocessors | +| [HBASE-18112](https://issues.apache.org/jira/browse/HBASE-18112) | Write RequestTooBigException back to client for NettyRpcServer | Major | IPC/RPC | +| [HBASE-19426](https://issues.apache.org/jira/browse/HBASE-19426) | Move has() and setTimestamp() to Mutation | Major | Client | +| [HBASE-19399](https://issues.apache.org/jira/browse/HBASE-19399) | Purge curator dependency from hbase-client | Major | Client, Zookeeper | +| [HBASE-19344](https://issues.apache.org/jira/browse/HBASE-19344) | improve asyncWAL by using Independent thread for netty #IO in FanOutOneBlockAsyncDFSOutput | Major | wal | +| [HBASE-19346](https://issues.apache.org/jira/browse/HBASE-19346) | Use EventLoopGroup to create AsyncFSOutput | Major | wal | +| [HBASE-19362](https://issues.apache.org/jira/browse/HBASE-19362) | Remove unused imports from hbase-thrift module | Minor | Thrift | +| [HBASE-19096](https://issues.apache.org/jira/browse/HBASE-19096) | Add RowMutions batch support in AsyncTable | Major | . | +| [HBASE-17049](https://issues.apache.org/jira/browse/HBASE-17049) | Do not issue sync request when there are still entries in ringbuffer | Critical | wal | +| [HBASE-19242](https://issues.apache.org/jira/browse/HBASE-19242) | Add MOB compact support for AsyncAdmin | Blocker | Admin, mob | +| [HBASE-19122](https://issues.apache.org/jira/browse/HBASE-19122) | preCompact and preFlush can bypass by returning null scanner; shut it down | Critical | Coprocessors, Scanners | +| [HBASE-19313](https://issues.apache.org/jira/browse/HBASE-19313) | Call blockUntilConnected when constructing ZKAsyncRegistry(temporary workaround) | Major | asyncclient, Client, Zookeeper | +| [HBASE-19269](https://issues.apache.org/jira/browse/HBASE-19269) | Reenable TestShellRSGroups | Major | test | +| [HBASE-19276](https://issues.apache.org/jira/browse/HBASE-19276) | RegionPlan should correctly implement equals and hashCode | Major | . | +| [HBASE-18911](https://issues.apache.org/jira/browse/HBASE-18911) | Unify Admin and AsyncAdmin's methods name | Major | . | +| [HBASE-19268](https://issues.apache.org/jira/browse/HBASE-19268) | Enable Replica tests that were disabled by Proc-V2 AM in HBASE-14614 | Major | test | +| [HBASE-19009](https://issues.apache.org/jira/browse/HBASE-19009) | implement modifyTable and enable/disableTableReplication for AsyncAdmin | Major | . | +| [HBASE-18964](https://issues.apache.org/jira/browse/HBASE-18964) | Deprecate RowProcessor and processRowsWithLocks() APIs that take RowProcessor as an argument | Major | regionserver | +| [HBASE-19270](https://issues.apache.org/jira/browse/HBASE-19270) | Reenable TestRegionMergeTransactionOnCluster#testMergeWithReplicas disable by HBASE-14614 | Major | Region Assignment | +| [HBASE-19278](https://issues.apache.org/jira/browse/HBASE-19278) | Reenable cleanup in test teardown in TestAccessController3 disabled by HBASE-14614 | Major | Region Assignment | +| [HBASE-19235](https://issues.apache.org/jira/browse/HBASE-19235) | CoprocessorEnvironment should be exposed to CPs | Minor | Coprocessors | +| [HBASE-19243](https://issues.apache.org/jira/browse/HBASE-19243) | Start mini cluster once before class for TestFIFOCompactionPolicy | Major | test | +| [HBASE-18423](https://issues.apache.org/jira/browse/HBASE-18423) | Fix TestMetaWithReplicas | Major | test | +| [HBASE-18962](https://issues.apache.org/jira/browse/HBASE-18962) | Support atomic BatchOperations through batchMutate() | Major | regionserver | +| [HBASE-19127](https://issues.apache.org/jira/browse/HBASE-19127) | Set State.SPLITTING, MERGING, MERGING\_NEW, SPLITTING\_NEW properly in RegionStatesNode | Major | . | +| [HBASE-19220](https://issues.apache.org/jira/browse/HBASE-19220) | Async tests time out talking to zk; 'clusterid came back null' | Major | test | +| [HBASE-19002](https://issues.apache.org/jira/browse/HBASE-19002) | Introduce more examples to show how to intercept normal region operations | Minor | Coprocessors | +| [HBASE-18624](https://issues.apache.org/jira/browse/HBASE-18624) | Added support for clearing BlockCache based on table name | Major | . | +| [HBASE-19203](https://issues.apache.org/jira/browse/HBASE-19203) | Update Hadoop version used for build to 2.7.4 | Major | . | +| [HBASE-18961](https://issues.apache.org/jira/browse/HBASE-18961) | doMiniBatchMutate() is big, split it into smaller methods | Major | regionserver | +| [HBASE-19197](https://issues.apache.org/jira/browse/HBASE-19197) | Move version on branch-2 from 2.0.0-alpha4 to 2.0.0-beta-1.SNAPSHOT | Major | . | +| [HBASE-18950](https://issues.apache.org/jira/browse/HBASE-18950) | Remove Optional parameters in AsyncAdmin interface | Blocker | Client | +| [HBASE-19131](https://issues.apache.org/jira/browse/HBASE-19131) | Add the ClusterStatus hook and cleanup other hooks which can be replaced by ClusterStatus hook | Major | Coprocessors | +| [HBASE-19095](https://issues.apache.org/jira/browse/HBASE-19095) | Add CP hooks in RegionObserver for in memory compaction | Major | Coprocessors | +| [HBASE-19152](https://issues.apache.org/jira/browse/HBASE-19152) | Update refguide 'how to build an RC' and the make\_rc.sh script | Trivial | build | +| [HBASE-18972](https://issues.apache.org/jira/browse/HBASE-18972) | Use Builder pattern to remove nullable parameters for coprocessor methods in RawAsyncTable interface | Blocker | Client | +| [HBASE-19141](https://issues.apache.org/jira/browse/HBASE-19141) | [compat 1-2] getClusterStatus always return empty ClusterStatus | Critical | API | +| [HBASE-18770](https://issues.apache.org/jira/browse/HBASE-18770) | Remove bypass method in ObserverContext and implement the 'bypass' logic case by case | Critical | Coprocessors | +| [HBASE-18375](https://issues.apache.org/jira/browse/HBASE-18375) | The pool chunks from ChunkCreator are deallocated while in pool because there is no reference to them | Critical | . | +| [HBASE-19136](https://issues.apache.org/jira/browse/HBASE-19136) | Set branch-2 version to 2.0.0-alpha4 from 2.0.0-alpha4-SNAPSHOT | Major | . | +| [HBASE-19031](https://issues.apache.org/jira/browse/HBASE-19031) | Align exist method in Table and AsyncTable interfaces | Critical | asyncclient, Client | +| [HBASE-18995](https://issues.apache.org/jira/browse/HBASE-18995) | Move methods that are for internal usage from CellUtil to Private util class | Critical | . | +| [HBASE-18906](https://issues.apache.org/jira/browse/HBASE-18906) | Provide Region#waitForFlushes API | Critical | Coprocessors | +| [HBASE-19090](https://issues.apache.org/jira/browse/HBASE-19090) | Add config 'hbase.systemtables.compacting.memstore.type' to hbase-default.xml | Major | . | +| [HBASE-19048](https://issues.apache.org/jira/browse/HBASE-19048) | Cleanup MasterObserver hooks which takes IA private params | Major | Coprocessors | +| [HBASE-19029](https://issues.apache.org/jira/browse/HBASE-19029) | Align RPC timout methods in Table and AsyncTableBase | Critical | asyncclient, Client | +| [HBASE-19057](https://issues.apache.org/jira/browse/HBASE-19057) | Fix other code review comments about FilterList Improvement | Blocker | Filters | +| [HBASE-19074](https://issues.apache.org/jira/browse/HBASE-19074) | Miscellaneous Observer cleanups | Major | Coprocessors | +| [HBASE-19070](https://issues.apache.org/jira/browse/HBASE-19070) | temporarily make the mvnsite nightly test non-voting. | Major | build | +| [HBASE-18754](https://issues.apache.org/jira/browse/HBASE-18754) | Get rid of Writable from TimeRangeTracker | Major | . | +| [HBASE-19053](https://issues.apache.org/jira/browse/HBASE-19053) | Split out o.a.h.h.http from hbase-server into a separate module | Major | . | +| [HBASE-19069](https://issues.apache.org/jira/browse/HBASE-19069) | Do not wrap the original CompactionLifeCycleTracker when calling CP hooks | Blocker | Compaction, Coprocessors | +| [HBASE-18873](https://issues.apache.org/jira/browse/HBASE-18873) | Hide protobufs in GlobalQuotaSettings | Critical | . | +| [HBASE-19010](https://issues.apache.org/jira/browse/HBASE-19010) | Reimplement getMasterInfoPort for Admin | Major | Client | +| [HBASE-19045](https://issues.apache.org/jira/browse/HBASE-19045) | Deprecate RegionObserver#postInstantiateDeleteTracker | Major | Coprocessors | +| [HBASE-18977](https://issues.apache.org/jira/browse/HBASE-18977) | Reenable test of filterlist using MUST\_PASS\_ONE and two familyfilters | Blocker | Filters | +| [HBASE-18945](https://issues.apache.org/jira/browse/HBASE-18945) | Make a IA.LimitedPrivate interface for CellComparator | Major | . | +| [HBASE-18960](https://issues.apache.org/jira/browse/HBASE-18960) | A few bug fixes and minor improvements around batchMutate() | Major | regionserver | +| [HBASE-18914](https://issues.apache.org/jira/browse/HBASE-18914) | Remove AsyncAdmin's methods which were already deprecated in Admin interface | Major | . | +| [HBASE-18954](https://issues.apache.org/jira/browse/HBASE-18954) | Make \*CoprocessorHost classes private | Major | Coprocessors | +| [HBASE-18966](https://issues.apache.org/jira/browse/HBASE-18966) | Use non-sync TimeRangeTracker as a replacement for TimeRange in ImmutableSegment | Major | . | +| [HBASE-18747](https://issues.apache.org/jira/browse/HBASE-18747) | Introduce new example and helper classes to tell CP users how to do filtering on scanners | Critical | Coprocessors | +| [HBASE-18411](https://issues.apache.org/jira/browse/HBASE-18411) | Dividing FiterList into two separate sub-classes: FilterListWithOR , FilterListWithAND | Major | Filters | +| [HBASE-18108](https://issues.apache.org/jira/browse/HBASE-18108) | Procedure WALs are archived but not cleaned; fix | Blocker | proc-v2 | +| [HBASE-18867](https://issues.apache.org/jira/browse/HBASE-18867) | maven enforcer plugin needs update to work with jdk9 | Blocker | build | +| [HBASE-18981](https://issues.apache.org/jira/browse/HBASE-18981) | Address issues found by error-prone in hbase-client | Trivial | . | +| [HBASE-18980](https://issues.apache.org/jira/browse/HBASE-18980) | Address issues found by error-prone in hbase-hadoop2-compat | Trivial | . | +| [HBASE-18951](https://issues.apache.org/jira/browse/HBASE-18951) | Use Builder pattern to remove nullable parameters for checkAndXXX methods in RawAsyncTable/AsyncTable interface | Blocker | asyncclient, Client | +| [HBASE-18160](https://issues.apache.org/jira/browse/HBASE-18160) | Fix incorrect logic in FilterList.filterKeyValue | Major | Filters | +| [HBASE-17678](https://issues.apache.org/jira/browse/HBASE-17678) | FilterList with MUST\_PASS\_ONE may lead to redundant cells returned | Major | Filters | +| [HBASE-18957](https://issues.apache.org/jira/browse/HBASE-18957) | add test that confirms 2 FamilyFilters in a FilterList using MUST\_PASS\_ONE operator will return results that match either of the FamilyFilters and revert as needed to make it pass. | Critical | Filters | +| [HBASE-18949](https://issues.apache.org/jira/browse/HBASE-18949) | Remove the CompactionRequest parameter in preCompactSelection | Major | Coprocessors | +| [HBASE-18752](https://issues.apache.org/jira/browse/HBASE-18752) | Recalculate the TimeRange in flushing snapshot to store file | Major | . | +| [HBASE-18909](https://issues.apache.org/jira/browse/HBASE-18909) | Deprecate Admin's methods which used String regex | Major | Admin | +| [HBASE-18931](https://issues.apache.org/jira/browse/HBASE-18931) | Make ObserverContext an interface and remove private/testing methods | Major | Coprocessors | +| [HBASE-18933](https://issues.apache.org/jira/browse/HBASE-18933) | set version number to 2.0.0-alpha4-SNAPSHOT following release of alpha3 | Blocker | build | +| [HBASE-18815](https://issues.apache.org/jira/browse/HBASE-18815) | We need to pass something like CompactionRequest in CP to give user some information about the compaction | Major | Coprocessors | +| [HBASE-18105](https://issues.apache.org/jira/browse/HBASE-18105) | [AMv2] Split/Merge need cleanup; currently they diverge and do not fully embrace AMv2 world | Major | Region Assignment | +| [HBASE-18753](https://issues.apache.org/jira/browse/HBASE-18753) | Introduce the unsynchronized TimeRangeTracker | Major | . | +| [HBASE-18010](https://issues.apache.org/jira/browse/HBASE-18010) | Connect CellChunkMap to be used for flattening in CompactingMemStore | Major | . | +| [HBASE-18807](https://issues.apache.org/jira/browse/HBASE-18807) | Remove PB references from Observers for Quotas | Major | . | +| [HBASE-18786](https://issues.apache.org/jira/browse/HBASE-18786) | FileNotFoundException should not be silently handled for primary region replicas | Major | regionserver, Scanners | +| [HBASE-18823](https://issues.apache.org/jira/browse/HBASE-18823) | Apply RegionInfo to MasterObserver/RegionObserver/WALObserver | Major | Coprocessors | +| [HBASE-17980](https://issues.apache.org/jira/browse/HBASE-17980) | Any HRegionInfo we give out should be immutable | Major | . | +| [HBASE-18821](https://issues.apache.org/jira/browse/HBASE-18821) | Enforcer plugin NPEs again when generating site | Major | website | +| [HBASE-18820](https://issues.apache.org/jira/browse/HBASE-18820) | assembly is missing hbase-replication | Major | build | +| [HBASE-18819](https://issues.apache.org/jira/browse/HBASE-18819) | Set version number to 2.0.0-alpha3 from 2.0.0-alpha3-SNAPSHOT | Major | . | +| [HBASE-14998](https://issues.apache.org/jira/browse/HBASE-14998) | Unify synchronous and asynchronous methods in Admin and cleanup | Blocker | . | +| [HBASE-18718](https://issues.apache.org/jira/browse/HBASE-18718) | Document the coprocessor.Export | Major | Coprocessors, documentation, tooling | +| [HBASE-18750](https://issues.apache.org/jira/browse/HBASE-18750) | Cleanup the docs saying "HTable use write buffer" | Minor | documentation | +| [HBASE-18779](https://issues.apache.org/jira/browse/HBASE-18779) | Move CompareOperator to hbase-client module | Critical | . | +| [HBASE-18769](https://issues.apache.org/jira/browse/HBASE-18769) | Make CompareFilter use generic CompareOperator instead of internal enum | Major | . | +| [HBASE-14997](https://issues.apache.org/jira/browse/HBASE-14997) | Move compareOp and Comparators out of filter to client package | Critical | . | +| [HBASE-18697](https://issues.apache.org/jira/browse/HBASE-18697) | Need a shaded hbase-mapreduce module | Major | mapreduce | +| [HBASE-18749](https://issues.apache.org/jira/browse/HBASE-18749) | Apply the CF specific TimeRange from Scan to filter the segment scanner | Minor | . | +| [HBASE-18739](https://issues.apache.org/jira/browse/HBASE-18739) | Make all TimeRange Constructors InterfaceAudience Private. | Major | API | +| [HBASE-18721](https://issues.apache.org/jira/browse/HBASE-18721) | Cleanup unused configs and private declaration | Minor | . | +| [HBASE-18700](https://issues.apache.org/jira/browse/HBASE-18700) | Document the new changes on mapreduce stuffs | Major | mapreduce | +| [HBASE-18698](https://issues.apache.org/jira/browse/HBASE-18698) | MapreduceDependencyClasspathTool does not include hbase-server as a dependency | Major | mapreduce | +| [HBASE-18692](https://issues.apache.org/jira/browse/HBASE-18692) | [compat 1-2] ByteBufferUtils.copyFromBufferToBuffer goes from void to int | Major | API | +| [HBASE-18691](https://issues.apache.org/jira/browse/HBASE-18691) | [compat 1-2] HCD remove and removeConfiguration change return type | Major | API | +| [HBASE-18688](https://issues.apache.org/jira/browse/HBASE-18688) | Upgrade commons-codec to 1.10 | Major | dependencies | +| [HBASE-16324](https://issues.apache.org/jira/browse/HBASE-16324) | Remove LegacyScanQueryMatcher | Critical | Compaction, regionserver | +| [HBASE-18687](https://issues.apache.org/jira/browse/HBASE-18687) | Add @since 2.0.0 to new classes | Major | API | +| [HBASE-18448](https://issues.apache.org/jira/browse/HBASE-18448) | EndPoint example for refreshing HFiles for stores | Minor | Coprocessors | +| [HBASE-18656](https://issues.apache.org/jira/browse/HBASE-18656) | Address issues found by error-prone in hbase-common | Major | build | +| [HBASE-18658](https://issues.apache.org/jira/browse/HBASE-18658) | Purge hokey hbase Service implementation; use (internal) Guava Service instead | Major | . | +| [HBASE-18347](https://issues.apache.org/jira/browse/HBASE-18347) | Implement a BufferedMutator for async client | Major | asyncclient, Client | +| [HBASE-18503](https://issues.apache.org/jira/browse/HBASE-18503) | Change \*\*\*Util and Master to use TableDescriptor and ColumnFamilyDescriptor | Major | . | +| [HBASE-18103](https://issues.apache.org/jira/browse/HBASE-18103) | [AMv2] If Master gives OPEN to another, if original eventually succeeds, Master will kill it | Critical | master, proc-v2 | +| [HBASE-18489](https://issues.apache.org/jira/browse/HBASE-18489) | Expose scan cursor in RawScanResultConsumer | Major | asyncclient, Client, scan | +| [HBASE-18608](https://issues.apache.org/jira/browse/HBASE-18608) | AsyncConnection should return AsyncAdmin interface instead of the implemenation | Major | Client | +| [HBASE-18595](https://issues.apache.org/jira/browse/HBASE-18595) | Set version in branch-2 from 2.0.0-alpha2-SNAPSHOT to 2.0.0-alpha2 | Major | . | +| [HBASE-18553](https://issues.apache.org/jira/browse/HBASE-18553) | Expose scan cursor for asynchronous scanner | Major | . | +| [HBASE-17994](https://issues.apache.org/jira/browse/HBASE-17994) | Add async client test to Performance Evaluation tool | Major | . | +| [HBASE-18424](https://issues.apache.org/jira/browse/HBASE-18424) | Fix TestAsyncTableGetMultiThreaded | Major | test | +| [HBASE-18238](https://issues.apache.org/jira/browse/HBASE-18238) | Address ruby static analysis for bin directory | Major | . | +| [HBASE-18593](https://issues.apache.org/jira/browse/HBASE-18593) | Tell m2eclipse what to do w/ replacer plugin | Trivial | build | +| [HBASE-18271](https://issues.apache.org/jira/browse/HBASE-18271) | Shade netty | Blocker | rpc | +| [HBASE-18398](https://issues.apache.org/jira/browse/HBASE-18398) | Snapshot operation fails with FileNotFoundException | Major | snapshots | +| [HBASE-18315](https://issues.apache.org/jira/browse/HBASE-18315) | Eliminate the findbugs warnings for hbase-rest | Major | . | +| [HBASE-18102](https://issues.apache.org/jira/browse/HBASE-18102) | [SHELL] Purge close\_region command that allows by-pass of Master | Major | Operability, shell | +| [HBASE-18231](https://issues.apache.org/jira/browse/HBASE-18231) | Deprecate and throw unsupported operation when Admin#closeRegion is called. | Critical | Admin | +| [HBASE-18367](https://issues.apache.org/jira/browse/HBASE-18367) | Reduce ProcedureInfo usage | Major | master, proc-v2 | +| [HBASE-18107](https://issues.apache.org/jira/browse/HBASE-18107) | [AMv2] Remove DispatchMergingRegionsRequest & DispatchMergingRegions | Major | Region Assignment | +| [HBASE-18428](https://issues.apache.org/jira/browse/HBASE-18428) | IntegrationTestDDLMasterFailover uses old-style immutable column descriptors | Major | integration tests | +| [HBASE-18419](https://issues.apache.org/jira/browse/HBASE-18419) | Update IntegrationTestIngestWithMOB and Actions to use ColumnFamily builders for modification | Critical | integration tests | +| [HBASE-18420](https://issues.apache.org/jira/browse/HBASE-18420) | Some methods of Admin don't use ColumnFamilyDescriptor | Major | . | +| [HBASE-17738](https://issues.apache.org/jira/browse/HBASE-17738) | BucketCache startup is slow | Major | BucketCache | +| [HBASE-18308](https://issues.apache.org/jira/browse/HBASE-18308) | Eliminate the findbugs warnings for hbase-server | Major | . | +| [HBASE-18052](https://issues.apache.org/jira/browse/HBASE-18052) | Add document for async admin | Major | Client | +| [HBASE-18229](https://issues.apache.org/jira/browse/HBASE-18229) | create new Async Split API to embrace AM v2 | Critical | proc-v2 | +| [HBASE-18342](https://issues.apache.org/jira/browse/HBASE-18342) | Add coprocessor service support for async admin | Major | Client | +| [HBASE-17922](https://issues.apache.org/jira/browse/HBASE-17922) | TestRegionServerHostname always fails against hadoop 3.0.0-alpha2 | Major | hadoop3 | +| [HBASE-18365](https://issues.apache.org/jira/browse/HBASE-18365) | Eliminate the findbugs warnings for hbase-common | Major | . | +| [HBASE-18343](https://issues.apache.org/jira/browse/HBASE-18343) | Track the remaining unimplemented methods for async admin | Major | Client | +| [HBASE-18268](https://issues.apache.org/jira/browse/HBASE-18268) | Eliminate the findbugs warnings for hbase-client | Major | Client | +| [HBASE-18295](https://issues.apache.org/jira/browse/HBASE-18295) | The result contains the cells across different rows | Blocker | Scanners | +| [HBASE-18318](https://issues.apache.org/jira/browse/HBASE-18318) | Implement updateConfiguration/stopMaster/stopRegionServer/shutdown methods | Major | Client | +| [HBASE-18316](https://issues.apache.org/jira/browse/HBASE-18316) | Implement async admin operations for draining region servers | Major | Client | +| [HBASE-18317](https://issues.apache.org/jira/browse/HBASE-18317) | Implement async admin operations for Normalizer/CleanerChore/CatalogJanitor | Major | Client | +| [HBASE-18319](https://issues.apache.org/jira/browse/HBASE-18319) | Implement getClusterStatus/getRegionLoad/getCompactionState/getLastMajorCompactionTimestamp methods | Major | Client | +| [HBASE-18002](https://issues.apache.org/jira/browse/HBASE-18002) | Investigate why bucket cache filling up in file mode in an exisiting file is slower | Major | BucketCache | +| [HBASE-17201](https://issues.apache.org/jira/browse/HBASE-17201) | Edit of HFileBlock comments and javadoc | Major | documentation | +| [HBASE-18240](https://issues.apache.org/jira/browse/HBASE-18240) | Add hbase-thirdparty, a project with hbase utility including an hbase-shaded-thirdparty module with guava, netty, etc. | Major | dependencies, shading | +| [HBASE-18297](https://issues.apache.org/jira/browse/HBASE-18297) | Provide a AsyncAdminBuilder to create new AsyncAdmin instance | Major | Client | +| [HBASE-18314](https://issues.apache.org/jira/browse/HBASE-18314) | Eliminate the findbugs warnings for hbase-examples | Major | . | +| [HBASE-18264](https://issues.apache.org/jira/browse/HBASE-18264) | Update pom plugins | Major | . | +| [HBASE-18283](https://issues.apache.org/jira/browse/HBASE-18283) | Provide a construct method which accept a thread pool for AsyncAdmin | Major | Client | +| [HBASE-18293](https://issues.apache.org/jira/browse/HBASE-18293) | Only add the spotbugs dependency when jdk8 is active | Major | build | +| [HBASE-18239](https://issues.apache.org/jira/browse/HBASE-18239) | Address ruby static analysis for shell module | Major | . | +| [HBASE-14902](https://issues.apache.org/jira/browse/HBASE-14902) | Revert some of the stringency recently introduced by checkstyle tightening | Major | . | +| [HBASE-18272](https://issues.apache.org/jira/browse/HBASE-18272) | Fix issue about RSGroupBasedLoadBalancer#roundRobinAssignment where BOGUS\_SERVER\_NAME is involved in two groups | Major | Balancer | +| [HBASE-18234](https://issues.apache.org/jira/browse/HBASE-18234) | Revisit the async admin api | Major | Client | +| [HBASE-18221](https://issues.apache.org/jira/browse/HBASE-18221) | Switch from pread to stream should happen under HStore's reentrant lock | Major | Scanners | +| [HBASE-16242](https://issues.apache.org/jira/browse/HBASE-16242) | Upgrade Avro to 1.7.7 | Major | dependencies | +| [HBASE-18104](https://issues.apache.org/jira/browse/HBASE-18104) | [AMv2] Enable aggregation of RPCs (assigns/unassigns, etc.) | Major | Region Assignment | +| [HBASE-18213](https://issues.apache.org/jira/browse/HBASE-18213) | Add documentation about the new async client | Major | asyncclient, Client, documentation | +| [HBASE-18220](https://issues.apache.org/jira/browse/HBASE-18220) | Compaction scanners need not reopen storefile scanners while trying to switch over from pread to stream | Major | Compaction | +| [HBASE-17008](https://issues.apache.org/jira/browse/HBASE-17008) | Examples to make AsyncClient go down easy | Critical | asyncclient, Client | +| [HBASE-18109](https://issues.apache.org/jira/browse/HBASE-18109) | Assign system tables first (priority) | Critical | Region Assignment | +| [HBASE-18008](https://issues.apache.org/jira/browse/HBASE-18008) | Any HColumnDescriptor we give out should be immutable | Major | . | +| [HBASE-18190](https://issues.apache.org/jira/browse/HBASE-18190) | Set version in branch-2 to 2.0.0-alpha-1 | Major | . | +| [HBASE-18191](https://issues.apache.org/jira/browse/HBASE-18191) | Include hbase-metrics-\* in assembly | Major | . | +| [HBASE-16392](https://issues.apache.org/jira/browse/HBASE-16392) | Backup delete fault tolerance | Major | . | +| [HBASE-15160](https://issues.apache.org/jira/browse/HBASE-15160) | Put back HFile's HDFS op latency sampling code and add metrics for monitoring | Critical | . | +| [HBASE-16549](https://issues.apache.org/jira/browse/HBASE-16549) | Procedure v2 - Add new AM metrics | Major | proc-v2, Region Assignment | +| [HBASE-15995](https://issues.apache.org/jira/browse/HBASE-15995) | Separate replication WAL reading from shipping | Major | Replication | +| [HBASE-17530](https://issues.apache.org/jira/browse/HBASE-17530) | Readd TestMergeTableRegionsProcedure mistakenly removed by HBASE-16786 | Critical | test | +| [HBASE-16543](https://issues.apache.org/jira/browse/HBASE-16543) | Separate Create/Modify Table operations from open/reopen regions | Major | master | +| [HBASE-16261](https://issues.apache.org/jira/browse/HBASE-16261) | MultiHFileOutputFormat Enhancement | Major | hbase, mapreduce | +| [HBASE-18115](https://issues.apache.org/jira/browse/HBASE-18115) | Move SaslServer creation to HBaseSaslRpcServer | Major | IPC/RPC | +| [HBASE-18114](https://issues.apache.org/jira/browse/HBASE-18114) | Update the config of TestAsync\*AdminApi to make test stable | Major | Client | +| [HBASE-17066](https://issues.apache.org/jira/browse/HBASE-17066) | Procedure v2 - Add handling of merge region transition to the new AM | Major | proc-v2, Region Assignment | +| [HBASE-18091](https://issues.apache.org/jira/browse/HBASE-18091) | Add API for who currently holds a lock on namespace/ table/ region and log when state is LOCK\_EVENT\_WAIT | Major | proc-v2 | +| [HBASE-18013](https://issues.apache.org/jira/browse/HBASE-18013) | Write response directly instead of creating a fake call when setup connection | Major | IPC/RPC | +| [HBASE-17850](https://issues.apache.org/jira/browse/HBASE-17850) | Backup system repair utility | Major | . | +| [HBASE-18068](https://issues.apache.org/jira/browse/HBASE-18068) | Fix flaky test TestAsyncSnapshotAdminApi | Major | Client | +| [HBASE-18016](https://issues.apache.org/jira/browse/HBASE-18016) | Implement abort for TruncateTableProcedure | Major | proc-v2 | +| [HBASE-18018](https://issues.apache.org/jira/browse/HBASE-18018) | Support abort for all procedures by default | Major | proc-v2 | +| [HBASE-16851](https://issues.apache.org/jira/browse/HBASE-16851) | User-facing documentation for the In-Memory Compaction feature | Major | . | +| [HBASE-16436](https://issues.apache.org/jira/browse/HBASE-16436) | Add the CellChunkMap variant | Major | regionserver | +| [HBASE-18012](https://issues.apache.org/jira/browse/HBASE-18012) | Move RpcServer.Connection to a separated file | Major | IPC/RPC | +| [HBASE-17938](https://issues.apache.org/jira/browse/HBASE-17938) | General fault - tolerance framework for backup/restore operations | Major | . | +| [HBASE-17786](https://issues.apache.org/jira/browse/HBASE-17786) | Create LoadBalancer perf-tests (test balancer algorithm decoupled from workload) | Major | Balancer, proc-v2 | +| [HBASE-17887](https://issues.apache.org/jira/browse/HBASE-17887) | Row-level consistency is broken for read | Blocker | regionserver | +| [HBASE-17917](https://issues.apache.org/jira/browse/HBASE-17917) | Use pread by default for all user scan and switch to streaming read if needed | Major | scan | +| [HBASE-17977](https://issues.apache.org/jira/browse/HBASE-17977) | Enabled Master observer to delete quotas on table deletion by default | Major | . | +| [HBASE-17667](https://issues.apache.org/jira/browse/HBASE-17667) | Implement async flush/compact region methods | Major | Admin, asyncclient, Client | +| [HBASE-17978](https://issues.apache.org/jira/browse/HBASE-17978) | Investigate hbase superuser permissions in the face of quota violation | Major | . | +| [HBASE-17981](https://issues.apache.org/jira/browse/HBASE-17981) | Roll list\_quota\_violations into list\_quota\_snapshots | Major | . | +| [HBASE-17867](https://issues.apache.org/jira/browse/HBASE-17867) | Implement async procedure RPC API(list/exec/abort/isFinished) | Major | Client | +| [HBASE-17263](https://issues.apache.org/jira/browse/HBASE-17263) | Netty based rpc server impl | Major | Performance, rpc | +| [HBASE-17976](https://issues.apache.org/jira/browse/HBASE-17976) | Remove stability annotation from public audience-marked classes | Major | . | +| [HBASE-17955](https://issues.apache.org/jira/browse/HBASE-17955) | Commit Reviewboard comments from Vlad | Major | . | +| [HBASE-17920](https://issues.apache.org/jira/browse/HBASE-17920) | TestFSHDFSUtils always fails against hadoop 3.0.0-alpha2 | Major | hadoop3 | +| [HBASE-17865](https://issues.apache.org/jira/browse/HBASE-17865) | Implement async listSnapshot/deleteSnapshot methods. | Major | Client | +| [HBASE-16942](https://issues.apache.org/jira/browse/HBASE-16942) | Add FavoredStochasticLoadBalancer and FN Candidate generators | Major | FavoredNodes | +| [HBASE-17873](https://issues.apache.org/jira/browse/HBASE-17873) | Change the IA.Public annotation to IA.Private for unstable API | Blocker | API | +| [HBASE-15583](https://issues.apache.org/jira/browse/HBASE-15583) | Any HTableDescriptor we give out should be immutable | Minor | . | +| [HBASE-15143](https://issues.apache.org/jira/browse/HBASE-15143) | Procedure v2 - Web UI displaying queues | Minor | proc-v2, UI | +| [HBASE-17952](https://issues.apache.org/jira/browse/HBASE-17952) | The new options for PE tool do not work | Major | Performance, test | +| [HBASE-16314](https://issues.apache.org/jira/browse/HBASE-16314) | Retry on table snapshot failure during full backup | Major | . | +| [HBASE-17864](https://issues.apache.org/jira/browse/HBASE-17864) | Implement async snapshot/cloneSnapshot/restoreSnapshot methods | Major | Client | +| [HBASE-17915](https://issues.apache.org/jira/browse/HBASE-17915) | Implement async replication admin methods | Major | Client | +| [HBASE-17929](https://issues.apache.org/jira/browse/HBASE-17929) | Add more options for PE tool | Major | Performance, test | +| [HBASE-16438](https://issues.apache.org/jira/browse/HBASE-16438) | Create a cell type so that chunk id is embedded in it | Major | regionserver | +| [HBASE-17925](https://issues.apache.org/jira/browse/HBASE-17925) | mvn assembly:single fails against hadoop3-alpha2 | Major | hadoop3 | +| [HBASE-17866](https://issues.apache.org/jira/browse/HBASE-17866) | Implement async setQuota/getQuota methods. | Major | Client | +| [HBASE-17897](https://issues.apache.org/jira/browse/HBASE-17897) | StripeStoreFileManager#nonOpenRowCompare use the wrong comparison function | Major | . | +| [HBASE-17895](https://issues.apache.org/jira/browse/HBASE-17895) | TestAsyncProcess#testAction fails if unsafe support is false | Trivial | test | +| [HBASE-17896](https://issues.apache.org/jira/browse/HBASE-17896) | The FIXED\_OVERHEAD of Segment is incorrect | Minor | . | +| [HBASE-16477](https://issues.apache.org/jira/browse/HBASE-16477) | Remove Writable interface and related code from WALEdit/WALKey | Major | wal | +| [HBASE-17872](https://issues.apache.org/jira/browse/HBASE-17872) | The MSLABImpl generates the invaild cells when unsafe is not availble | Critical | . | +| [HBASE-17881](https://issues.apache.org/jira/browse/HBASE-17881) | Remove the ByteBufferCellImpl | Minor | test | +| [HBASE-17858](https://issues.apache.org/jira/browse/HBASE-17858) | Update refguide about the IS annotation if necessary | Major | API, documentation | +| [HBASE-16217](https://issues.apache.org/jira/browse/HBASE-16217) | Identify calling user in ObserverContext | Major | Coprocessors, security | +| [HBASE-17857](https://issues.apache.org/jira/browse/HBASE-17857) | Remove IS annotations from IA.Public classes | Major | API | +| [HBASE-17859](https://issues.apache.org/jira/browse/HBASE-17859) | ByteBufferUtils#compareTo is wrong | Critical | . | +| [HBASE-17668](https://issues.apache.org/jira/browse/HBASE-17668) | Implement async assgin/offline/move/unassign methods | Major | Admin, asyncclient, Client | +| [HBASE-17855](https://issues.apache.org/jira/browse/HBASE-17855) | Fix typo in async client implementation | Major | asyncclient, Client | +| [HBASE-17844](https://issues.apache.org/jira/browse/HBASE-17844) | Subset of HBASE-14614, Procedure v2: Core Assignment Manager (non-critical related changes) | Major | Region Assignment | +| [HBASE-17520](https://issues.apache.org/jira/browse/HBASE-17520) | Implement isTableEnabled/Disabled/Available methods | Major | Client | +| [HBASE-17765](https://issues.apache.org/jira/browse/HBASE-17765) | Reviving the merge possibility in the CompactingMemStore | Major | . | +| [HBASE-13395](https://issues.apache.org/jira/browse/HBASE-13395) | Remove HTableInterface | Major | API | +| [HBASE-17669](https://issues.apache.org/jira/browse/HBASE-17669) | Implement async mergeRegion/splitRegion methods. | Major | Admin, asyncclient, Client | +| [HBASE-17809](https://issues.apache.org/jira/browse/HBASE-17809) | cleanup unused class | Major | . | +| [HBASE-17805](https://issues.apache.org/jira/browse/HBASE-17805) | We should remove BoundedByteBufferPool because it is replaced by ByteBufferPool | Minor | . | +| [HBASE-17447](https://issues.apache.org/jira/browse/HBASE-17447) | Automatically delete quota when table is deleted | Major | . | +| [HBASE-17003](https://issues.apache.org/jira/browse/HBASE-17003) | Update book for filesystem use quotas | Major | documentation | +| [HBASE-17794](https://issues.apache.org/jira/browse/HBASE-17794) | Remove lingering "violation" in favor of the accurate "snapshot" | Trivial | . | +| [HBASE-17691](https://issues.apache.org/jira/browse/HBASE-17691) | Add ScanMetrics support for async scan | Major | Client | +| [HBASE-15314](https://issues.apache.org/jira/browse/HBASE-15314) | Allow more than one backing file in bucketcache | Major | BucketCache | +| [HBASE-17790](https://issues.apache.org/jira/browse/HBASE-17790) | Mark ReplicationAdmin's peerAdded and listReplicationPeers as Deprecated | Minor | Replication | +| [HBASE-17740](https://issues.apache.org/jira/browse/HBASE-17740) | Correct the semantic of batch and partial for async client | Critical | asyncclient, Client, scan | +| [HBASE-17338](https://issues.apache.org/jira/browse/HBASE-17338) | Treat Cell data size under global memstore heap size only when that Cell can not be copied to MSLAB | Major | regionserver | +| [HBASE-17745](https://issues.apache.org/jira/browse/HBASE-17745) | Support short circuit connection for master services | Major | . | +| [HBASE-17600](https://issues.apache.org/jira/browse/HBASE-17600) | Implement get/create/modify/delete/list namespace admin operations | Major | Client | +| [HBASE-17002](https://issues.apache.org/jira/browse/HBASE-17002) | [Master] Report quotas and active violations on Master UI and JMX metrics | Major | master, UI | +| [HBASE-17568](https://issues.apache.org/jira/browse/HBASE-17568) | Expire region reports in the HMaster | Major | . | +| [HBASE-15484](https://issues.apache.org/jira/browse/HBASE-15484) | Correct the semantic of batch and partial | Blocker | Client, scan | +| [HBASE-17602](https://issues.apache.org/jira/browse/HBASE-17602) | Tweak chore delay/period defaults | Trivial | . | +| [HBASE-17516](https://issues.apache.org/jira/browse/HBASE-17516) | Table quota not taking precedence over namespace quota | Major | . | +| [HBASE-17646](https://issues.apache.org/jira/browse/HBASE-17646) | Implement Async getRegion method | Major | asyncclient | +| [HBASE-17662](https://issues.apache.org/jira/browse/HBASE-17662) | Disable in-memory flush when replaying from WAL | Major | . | +| [HBASE-17428](https://issues.apache.org/jira/browse/HBASE-17428) | Expand on shell commands for detailed insight | Major | shell | +| [HBASE-16991](https://issues.apache.org/jira/browse/HBASE-16991) | Make the initialization of AsyncConnection asynchronous | Minor | Client | +| [HBASE-17608](https://issues.apache.org/jira/browse/HBASE-17608) | Add suspend support for RawScanResultConsumer | Major | asyncclient, Client, scan | +| [HBASE-17561](https://issues.apache.org/jira/browse/HBASE-17561) | table status page should escape values that may contain arbitrary characters. | Major | master, UI | +| [HBASE-17210](https://issues.apache.org/jira/browse/HBASE-17210) | Set timeout on trying rowlock according to client's RPC timeout | Major | . | +| [HBASE-17478](https://issues.apache.org/jira/browse/HBASE-17478) | Avoid sending FSUtilization reports to master when quota support is not enabled | Trivial | . | +| [HBASE-17025](https://issues.apache.org/jira/browse/HBASE-17025) | [Shell] Support space quota get/set via the shell | Major | shell | +| [HBASE-17644](https://issues.apache.org/jira/browse/HBASE-17644) | Always create ByteBufferCells after copying to MSLAB | Major | regionserver | +| [HBASE-17619](https://issues.apache.org/jira/browse/HBASE-17619) | Add async admin Impl which connect to RegionServer and implement close region methods. | Major | asyncclient | +| [HBASE-17656](https://issues.apache.org/jira/browse/HBASE-17656) | Move new Address class from util to net package | Minor | rsgroup | +| [HBASE-17583](https://issues.apache.org/jira/browse/HBASE-17583) | Add inclusive/exclusive support for startRow and endRow of scan for sync client | Major | Client, scan | +| [HBASE-17259](https://issues.apache.org/jira/browse/HBASE-17259) | Missing functionality to remove space quota | Major | . | +| [HBASE-17001](https://issues.apache.org/jira/browse/HBASE-17001) | [RegionServer] Implement enforcement of quota violation policies | Major | regionserver | +| [HBASE-17575](https://issues.apache.org/jira/browse/HBASE-17575) | Run critical tests with each of the Inmemory Compaction Policies enabled (Towards Making BASIC the Default In-Memory Compaction Policy) | Major | test | +| [HBASE-17484](https://issues.apache.org/jira/browse/HBASE-17484) | Add non cached version of OffheapKV for write path | Major | regionserver | +| [HBASE-17389](https://issues.apache.org/jira/browse/HBASE-17389) | Convert all internal usages from ReplicationAdmin to Admin | Major | . | +| [HBASE-17402](https://issues.apache.org/jira/browse/HBASE-17402) | TestAsyncTableScan sometimes hangs | Major | Client | +| [HBASE-17350](https://issues.apache.org/jira/browse/HBASE-17350) | Fixup of regionserver group-based assignment | Critical | regionserver, rsgroup | +| [HBASE-16999](https://issues.apache.org/jira/browse/HBASE-16999) | [Master] Inform RegionServers on size quota violations | Major | . | +| [HBASE-17596](https://issues.apache.org/jira/browse/HBASE-17596) | Implement add/delete/modify column family methods | Major | Client | +| [HBASE-17349](https://issues.apache.org/jira/browse/HBASE-17349) | Add doc for regionserver group-based assignment | Critical | regionserver, rsgroup | +| [HBASE-17511](https://issues.apache.org/jira/browse/HBASE-17511) | Implement enable/disable table methods | Major | Client | +| [HBASE-17281](https://issues.apache.org/jira/browse/HBASE-17281) | FN should use datanode port from hdfs configuration | Minor | FavoredNodes | +| [HBASE-17198](https://issues.apache.org/jira/browse/HBASE-17198) | FN updates during region merge (follow up to Procedure v2 merge) | Major | FavoredNodes | +| [HBASE-17101](https://issues.apache.org/jira/browse/HBASE-17101) | FavoredNodes should not apply to system tables | Major | FavoredNodes | +| [HBASE-17346](https://issues.apache.org/jira/browse/HBASE-17346) | Add coprocessor service support | Major | asyncclient, Client, Coprocessors | +| [HBASE-17566](https://issues.apache.org/jira/browse/HBASE-17566) | Jetty upgrade fixes | Major | REST, UI | +| [HBASE-17562](https://issues.apache.org/jira/browse/HBASE-17562) | Remove documentation for coprocessor execution times after HBASE-14205 | Major | Coprocessors, Performance, regionserver | +| [HBASE-16998](https://issues.apache.org/jira/browse/HBASE-16998) | [Master] Analyze table use reports and update quota violations | Major | . | +| [HBASE-17557](https://issues.apache.org/jira/browse/HBASE-17557) | HRegionServer#reportRegionSizesForQuotas() should respond to UnsupportedOperationException | Major | . | +| [HBASE-17526](https://issues.apache.org/jira/browse/HBASE-17526) | Procedure v2 - cleanup isSuspended from MasterProcedureScheduler#Queue | Minor | proc-v2 | +| [HBASE-17500](https://issues.apache.org/jira/browse/HBASE-17500) | Implement getTable/creatTable/deleteTable/truncateTable methods | Major | Client | +| [HBASE-17045](https://issues.apache.org/jira/browse/HBASE-17045) | Unify the implementation of small scan and regular scan | Major | Client, scan | +| [HBASE-17443](https://issues.apache.org/jira/browse/HBASE-17443) | Move listReplicated/enableTableRep/disableTableRep methods from ReplicationAdmin to Admin | Major | . | +| [HBASE-17492](https://issues.apache.org/jira/browse/HBASE-17492) | Fix the compacting memstore part in hbase shell ruby script | Major | . | +| [HBASE-17491](https://issues.apache.org/jira/browse/HBASE-17491) | Remove all setters from HTable interface and introduce a TableBuilder to build Table instance | Major | . | +| [HBASE-17067](https://issues.apache.org/jira/browse/HBASE-17067) | Procedure v2 - remove tryAcquire\*Lock and use wait/wake to make framework event based | Major | proc-v2 | +| [HBASE-17367](https://issues.apache.org/jira/browse/HBASE-17367) | Make HTable#getBufferedMutator thread safe | Major | . | +| [HBASE-17497](https://issues.apache.org/jira/browse/HBASE-17497) | Add first async MetaTableAccessor impl and Implement tableExists method | Major | Client | +| [HBASE-17498](https://issues.apache.org/jira/browse/HBASE-17498) | Implement listTables and listTableNames methods | Major | Client | +| [HBASE-16831](https://issues.apache.org/jira/browse/HBASE-16831) | Procedure V2 - Remove org.apache.hadoop.hbase.zookeeper.lock | Minor | . | +| [HBASE-16867](https://issues.apache.org/jira/browse/HBASE-16867) | Procedure V2 - Check ACLs for remote HBaseLock | Major | . | +| [HBASE-17480](https://issues.apache.org/jira/browse/HBASE-17480) | Remove split region code from Region Server | Major | Region Assignment | +| [HBASE-17396](https://issues.apache.org/jira/browse/HBASE-17396) | Add first async admin impl and implement balance methods | Major | Client | +| [HBASE-17483](https://issues.apache.org/jira/browse/HBASE-17483) | Add equals/hashcode for OffheapKeyValue | Major | regionserver | +| [HBASE-17081](https://issues.apache.org/jira/browse/HBASE-17081) | Flush the entire CompactingMemStore content to disk | Major | . | +| [HBASE-17372](https://issues.apache.org/jira/browse/HBASE-17372) | Make AsyncTable thread safe | Major | asyncclient, Client | +| [HBASE-16744](https://issues.apache.org/jira/browse/HBASE-16744) | Procedure V2 - Lock procedures to allow clients to acquire locks on tables/namespaces/regions | Major | . | +| [HBASE-17416](https://issues.apache.org/jira/browse/HBASE-17416) | Use isEmpty instead of size() == 0 in hbase-protocol-shaded | Minor | . | +| [HBASE-14061](https://issues.apache.org/jira/browse/HBASE-14061) | Support CF-level Storage Policy | Major | HFile, regionserver | +| [HBASE-17337](https://issues.apache.org/jira/browse/HBASE-17337) | list replication peers request should be routed through master | Major | . | +| [HBASE-12148](https://issues.apache.org/jira/browse/HBASE-12148) | Remove TimeRangeTracker as point of contention when many threads writing a Store | Major | Performance | +| [HBASE-15172](https://issues.apache.org/jira/browse/HBASE-15172) | Support setting storage policy in bulkload | Major | . | +| [HBASE-17388](https://issues.apache.org/jira/browse/HBASE-17388) | Move ReplicationPeer and other replication related PB messages to the replication.proto | Major | Replication | +| [HBASE-17409](https://issues.apache.org/jira/browse/HBASE-17409) | Re-fix XSS request issue in JMXJsonServlet | Major | security, UI | +| [HBASE-17410](https://issues.apache.org/jira/browse/HBASE-17410) | Use isEmpty instead of size() == 0 in hbase-client | Minor | Client | +| [HBASE-17373](https://issues.apache.org/jira/browse/HBASE-17373) | Reverse the order of snapshot creation in the CompactingMemStore | Major | . | +| [HBASE-17336](https://issues.apache.org/jira/browse/HBASE-17336) | get/update replication peer config requests should be routed through master | Major | . | +| [HBASE-17149](https://issues.apache.org/jira/browse/HBASE-17149) | Procedure V2 - Fix nonce submission to avoid unnecessary calling coprocessor multiple times | Major | proc-v2 | +| [HBASE-17320](https://issues.apache.org/jira/browse/HBASE-17320) | Add inclusive/exclusive support for startRow and endRow of scan | Major | Client, scan | +| [HBASE-17090](https://issues.apache.org/jira/browse/HBASE-17090) | Procedure v2 - fast wake if nothing else is running | Major | proc-v2 | +| [HBASE-17068](https://issues.apache.org/jira/browse/HBASE-17068) | Procedure v2 - inherit region locks | Major | master, proc-v2 | +| [HBASE-16524](https://issues.apache.org/jira/browse/HBASE-16524) | Procedure v2 - Compute WALs cleanup on wal modification and not on every sync | Minor | proc-v2 | +| [HBASE-17345](https://issues.apache.org/jira/browse/HBASE-17345) | Implement batch | Major | asyncclient, Client | +| [HBASE-17335](https://issues.apache.org/jira/browse/HBASE-17335) | enable/disable replication peer requests should be routed through master | Major | . | +| [HBASE-17334](https://issues.apache.org/jira/browse/HBASE-17334) | Add locate row before/after support for AsyncRegionLocator | Major | Client | +| [HBASE-17262](https://issues.apache.org/jira/browse/HBASE-17262) | Refactor RpcServer so as to make it extendable and/or pluggable | Major | rpc | +| [HBASE-11392](https://issues.apache.org/jira/browse/HBASE-11392) | add/remove peer requests should be routed through master | Critical | . | +| [HBASE-17107](https://issues.apache.org/jira/browse/HBASE-17107) | FN info should be cleaned up on region/table cleanup | Major | FavoredNodes | +| [HBASE-17142](https://issues.apache.org/jira/browse/HBASE-17142) | Implement multi get | Major | asyncclient, Client | +| [HBASE-17282](https://issues.apache.org/jira/browse/HBASE-17282) | Reduce the redundant requests to meta table | Major | Client | +| [HBASE-17148](https://issues.apache.org/jira/browse/HBASE-17148) | Procedure v2 - add bulk proc submit | Minor | master, proc-v2 | +| [HBASE-16398](https://issues.apache.org/jira/browse/HBASE-16398) | optimize HRegion computeHDFSBlocksDistribution | Major | regionserver | +| [HBASE-15787](https://issues.apache.org/jira/browse/HBASE-15787) | Change the flush related heuristics to work with offheap size configured | Major | regionserver | +| [HBASE-17000](https://issues.apache.org/jira/browse/HBASE-17000) | [RegionServer] Compute region filesystem space use and report to Master | Major | regionserver | +| [HBASE-17316](https://issues.apache.org/jira/browse/HBASE-17316) | Addendum to HBASE-17294, 'External Configuration for Memory Compaction' | Major | . | +| [HBASE-17313](https://issues.apache.org/jira/browse/HBASE-17313) | Add BufferedMutatorParams#clone method | Major | Client | +| [HBASE-17277](https://issues.apache.org/jira/browse/HBASE-17277) | Allow alternate BufferedMutator implementation | Major | . | +| [HBASE-17294](https://issues.apache.org/jira/browse/HBASE-17294) | External Configuration for Memory Compaction | Major | . | +| [HBASE-16336](https://issues.apache.org/jira/browse/HBASE-16336) | Removing peers seems to be leaving spare queues | Major | Replication | +| [HBASE-17251](https://issues.apache.org/jira/browse/HBASE-17251) | Add a timeout parameter when locating region | Major | asyncclient, Client | +| [HBASE-16941](https://issues.apache.org/jira/browse/HBASE-16941) | FavoredNodes - Split/Merge code paths | Major | FavoredNodes | +| [HBASE-17260](https://issues.apache.org/jira/browse/HBASE-17260) | Procedure v2 - Add setOwner() overload taking a User instance | Trivial | proc-v2 | +| [HBASE-16996](https://issues.apache.org/jira/browse/HBASE-16996) | Implement storage/retrieval of filesystem-use quotas into quota table | Major | . | +| [HBASE-17111](https://issues.apache.org/jira/browse/HBASE-17111) | Use Apache CLI in SnapshotInfo tool | Major | . | +| [HBASE-16648](https://issues.apache.org/jira/browse/HBASE-16648) | [JDK8] Use computeIfAbsent instead of get and putIfAbsent | Major | Performance | +| [HBASE-17167](https://issues.apache.org/jira/browse/HBASE-17167) | Pass mvcc to client when scan | Major | Client, scan | +| [HBASE-17012](https://issues.apache.org/jira/browse/HBASE-17012) | Handle Offheap cells in CompressedKvEncoder | Major | regionserver | +| [HBASE-17048](https://issues.apache.org/jira/browse/HBASE-17048) | Calcuate suitable ByteBuf size when allocating send buffer in FanOutOneBlockAsyncDFSOutput | Major | wal | +| [HBASE-17183](https://issues.apache.org/jira/browse/HBASE-17183) | Handle ByteBufferCell while making TagRewriteCell | Major | regionserver | +| [HBASE-17162](https://issues.apache.org/jira/browse/HBASE-17162) | Avoid unconditional call to getXXXArray() in write path | Major | regionserver | +| [HBASE-17169](https://issues.apache.org/jira/browse/HBASE-17169) | Remove Cell variants with ShareableMemory | Major | regionserver | +| [HBASE-16984](https://issues.apache.org/jira/browse/HBASE-16984) | Implement getScanner | Major | Client | +| [HBASE-15786](https://issues.apache.org/jira/browse/HBASE-15786) | Create DBB backed MSLAB pool | Major | regionserver | +| [HBASE-17141](https://issues.apache.org/jira/browse/HBASE-17141) | Introduce a more user-friendly implementation of AsyncTable | Major | asyncclient, Client | +| [HBASE-16995](https://issues.apache.org/jira/browse/HBASE-16995) | Build client Java API and client protobuf messages | Major | Client | +| [HBASE-17139](https://issues.apache.org/jira/browse/HBASE-17139) | Remove sweep tool related configs from hbase-default.xml | Major | . | +| [HBASE-16956](https://issues.apache.org/jira/browse/HBASE-16956) | Refactor FavoredNodePlan to use regionNames as keys | Minor | FavoredNodes | +| [HBASE-17085](https://issues.apache.org/jira/browse/HBASE-17085) | AsyncFSWAL may issue unnecessary AsyncDFSOutput.sync | Major | wal | +| [HBASE-16169](https://issues.apache.org/jira/browse/HBASE-16169) | Make RegionSizeCalculator scalable | Major | mapreduce, scaling | +| [HBASE-17073](https://issues.apache.org/jira/browse/HBASE-17073) | Increase the max number of buffers in ByteBufferPool | Major | . | +| [HBASE-17087](https://issues.apache.org/jira/browse/HBASE-17087) | Enable Aliasing for CodedInputStream created by ByteInputByteString#newCodedInput | Major | regionserver | +| [HBASE-17089](https://issues.apache.org/jira/browse/HBASE-17089) | Add doc on experience running with hedged reads | Major | documentation | +| [HBASE-15788](https://issues.apache.org/jira/browse/HBASE-15788) | Use Offheap ByteBuffers from BufferPool to read RPC requests. | Major | regionserver | +| [HBASE-16838](https://issues.apache.org/jira/browse/HBASE-16838) | Implement basic scan | Major | asyncclient, Client | +| [HBASE-17071](https://issues.apache.org/jira/browse/HBASE-17071) | Do not initialize MemstoreChunkPool when use mslab option is turned off | Major | . | +| [HBASE-16570](https://issues.apache.org/jira/browse/HBASE-16570) | Compute region locality in parallel at startup | Major | . | +| [HBASE-17053](https://issues.apache.org/jira/browse/HBASE-17053) | Remove LogRollerExitedChecker | Major | wal | +| [HBASE-17035](https://issues.apache.org/jira/browse/HBASE-17035) | Check why we roll a wal writer at 10MB when the configured roll size is 120M+ with AsyncFSWAL | Major | wal | +| [HBASE-17021](https://issues.apache.org/jira/browse/HBASE-17021) | Use RingBuffer to reduce the contention in AsyncFSWAL | Major | wal | +| [HBASE-16982](https://issues.apache.org/jira/browse/HBASE-16982) | Better integrate Apache CLI in AbstractHBaseTool | Major | . | +| [HBASE-17050](https://issues.apache.org/jira/browse/HBASE-17050) | Upgrade Apache CLI version from 1.2 to 1.3.1 | Minor | . | +| [HBASE-17030](https://issues.apache.org/jira/browse/HBASE-17030) | Procedure v2 - A couple of tweaks to the SplitTableRegionProcedure | Trivial | proc-v2 | +| [HBASE-16937](https://issues.apache.org/jira/browse/HBASE-16937) | Replace SnapshotType protobuf conversion when we can directly use the pojo object | Trivial | snapshots | +| [HBASE-16892](https://issues.apache.org/jira/browse/HBASE-16892) | Use TableName instead of String in SnapshotDescription | Trivial | snapshots | +| [HBASE-16865](https://issues.apache.org/jira/browse/HBASE-16865) | Procedure v2 - Inherit lock from root proc | Major | proc-v2 | +| [HBASE-16970](https://issues.apache.org/jira/browse/HBASE-16970) | Clarify misleading Scan.java comment about caching | Trivial | . | +| [HBASE-16986](https://issues.apache.org/jira/browse/HBASE-16986) | Add note on how scanner caching has changed since 0.98 to refguid | Minor | documentation | +| [HBASE-16608](https://issues.apache.org/jira/browse/HBASE-16608) | Introducing the ability to merge ImmutableSegments without copy-compaction or SQM usage | Major | . | +| [HBASE-16945](https://issues.apache.org/jira/browse/HBASE-16945) | Implement AsyncRegionLocator | Major | Client | +| [HBASE-16968](https://issues.apache.org/jira/browse/HBASE-16968) | Refactor FanOutOneBlockAsyncDFSOutput | Major | io, wal | +| [HBASE-16954](https://issues.apache.org/jira/browse/HBASE-16954) | Unify HTable#checkAndDelete with AP | Minor | . | +| [HBASE-16891](https://issues.apache.org/jira/browse/HBASE-16891) | Try copying to the Netty ByteBuf directly from the WALEdit | Major | wal | +| [HBASE-16932](https://issues.apache.org/jira/browse/HBASE-16932) | Implement small scan | Major | Client | +| [HBASE-16835](https://issues.apache.org/jira/browse/HBASE-16835) | Revisit the zookeeper usage at client side | Major | Client, Zookeeper | +| [HBASE-15709](https://issues.apache.org/jira/browse/HBASE-15709) | Handle large edits for asynchronous WAL | Critical | io, wal | +| [HBASE-15789](https://issues.apache.org/jira/browse/HBASE-15789) | PB related changes to work with offheap | Major | regionserver | +| [HBASE-16871](https://issues.apache.org/jira/browse/HBASE-16871) | Procedure v2 - add waiting procs back to the queue after restart | Major | proc-v2 | +| [HBASE-16872](https://issues.apache.org/jira/browse/HBASE-16872) | Implement mutateRow and checkAndMutate | Major | Client | +| [HBASE-16874](https://issues.apache.org/jira/browse/HBASE-16874) | Fix TestMasterFailoverWithProcedures and ensure single proc-executor for kill/restart tests | Minor | proc-v2 | +| [HBASE-16864](https://issues.apache.org/jira/browse/HBASE-16864) | Procedure v2 - Fix StateMachineProcedure support for child procs at last step | Major | proc-v2 | +| [HBASE-16837](https://issues.apache.org/jira/browse/HBASE-16837) | Implement checkAndPut and checkAndDelete | Major | Client | +| [HBASE-16836](https://issues.apache.org/jira/browse/HBASE-16836) | Implement increment and append | Major | Client | +| [HBASE-16846](https://issues.apache.org/jira/browse/HBASE-16846) | Procedure v2 - executor cleanup | Minor | proc-v2 | +| [HBASE-16834](https://issues.apache.org/jira/browse/HBASE-16834) | Add AsyncConnection support for ConnectionFactory | Major | Client | +| [HBASE-16839](https://issues.apache.org/jira/browse/HBASE-16839) | Procedure v2 - Move all protobuf handling to ProcedureUtil | Minor | proc-v2 | +| [HBASE-16642](https://issues.apache.org/jira/browse/HBASE-16642) | Procedure V2: Use DelayQueue instead of TimeoutBlockingQueue | Minor | proc-v2 | +| [HBASE-16813](https://issues.apache.org/jira/browse/HBASE-16813) | Procedure v2 - Move ProcedureEvent to hbase-procedure module | Major | proc-v2 | +| [HBASE-16735](https://issues.apache.org/jira/browse/HBASE-16735) | Procedure v2 - Fix yield while holding locks | Major | proc-v2 | +| [HBASE-16505](https://issues.apache.org/jira/browse/HBASE-16505) | Save deadline in RpcCallContext according to request's timeout | Major | . | +| [HBASE-15561](https://issues.apache.org/jira/browse/HBASE-15561) | See how G1GC works with MSLAB and chunk pool | Major | . | +| [HBASE-16802](https://issues.apache.org/jira/browse/HBASE-16802) | Procedure v2 - group procedure cleaning | Trivial | proc-v2 | +| [HBASE-16146](https://issues.apache.org/jira/browse/HBASE-16146) | Counters are expensive... | Major | metrics | +| [HBASE-16788](https://issues.apache.org/jira/browse/HBASE-16788) | Race in compacted file deletion between HStore close() and closeAndArchiveCompactedFiles() | Blocker | regionserver | +| [HBASE-14734](https://issues.apache.org/jira/browse/HBASE-14734) | BindException when setting up MiniKdc | Major | flakey, test | +| [HBASE-15984](https://issues.apache.org/jira/browse/HBASE-15984) | Given failure to parse a given WAL that was closed cleanly, replay the WAL. | Critical | Replication | +| [HBASE-15721](https://issues.apache.org/jira/browse/HBASE-15721) | Optimization in cloning cells into MSLAB | Major | regionserver | +| [HBASE-16372](https://issues.apache.org/jira/browse/HBASE-16372) | References to previous cell in read path should be avoided | Blocker | Scanners | +| [HBASE-16759](https://issues.apache.org/jira/browse/HBASE-16759) | Avoid ByteString.copyFrom usage wherever possible | Major | Protobufs | +| [HBASE-16758](https://issues.apache.org/jira/browse/HBASE-16758) | Bring back HBaseZeroCopyByteStringer stuff | Major | Protobufs | +| [HBASE-16760](https://issues.apache.org/jira/browse/HBASE-16760) | Deprecate ByteString related methods in Bytes.java | Major | Protobufs | +| [HBASE-16741](https://issues.apache.org/jira/browse/HBASE-16741) | Amend the generate protobufs out-of-band build step to include shade, pulling in protobuf source and a hook for patching protobuf | Major | Protobufs | +| [HBASE-16264](https://issues.apache.org/jira/browse/HBASE-16264) | Figure how to deal with endpoints and shaded pb | Critical | Coprocessors, Protobufs | +| [HBASE-16742](https://issues.apache.org/jira/browse/HBASE-16742) | Add chapter for devs on how we do protobufs going forward | Major | documentation | +| [HBASE-16738](https://issues.apache.org/jira/browse/HBASE-16738) | L1 cache caching shared memory HFile block when blocks promoted from L2 to L1 | Major | regionserver, Scanners | +| [HBASE-16134](https://issues.apache.org/jira/browse/HBASE-16134) | Introduce Cell extension for server side. | Major | regionserver | +| [HBASE-16695](https://issues.apache.org/jira/browse/HBASE-16695) | Procedure v2 - Support for parent holding locks | Major | proc-v2 | +| [HBASE-16587](https://issues.apache.org/jira/browse/HBASE-16587) | Procedure v2 - Cleanup suspended proc execution | Major | proc-v2 | +| [HBASE-16651](https://issues.apache.org/jira/browse/HBASE-16651) | LRUBlockCache#returnBlock should try return block to Victim Handler L2 cache. | Major | regionserver, Scanners | +| [HBASE-16554](https://issues.apache.org/jira/browse/HBASE-16554) | Procedure V2 - Recover 'updated' part of WAL tracker if trailer is corrupted. | Major | . | +| [HBASE-7612](https://issues.apache.org/jira/browse/HBASE-7612) | [JDK8] Replace use of high-scale-lib counters with intrinsic facilities | Trivial | metrics | +| [HBASE-16534](https://issues.apache.org/jira/browse/HBASE-16534) | Procedure v2 - Perf Tool for Scheduler | Major | proc-v2, tooling | +| [HBASE-16586](https://issues.apache.org/jira/browse/HBASE-16586) | Procedure v2 - Cleanup sched wait/lock semantic | Major | proc-v2 | +| [HBASE-16626](https://issues.apache.org/jira/browse/HBASE-16626) | User customized RegionScanner from 1.X is incompatible with 2.0.0's off-heap part | Major | Offheaping | +| [HBASE-16618](https://issues.apache.org/jira/browse/HBASE-16618) | Procedure v2 - Add base class for table and ns procedures | Minor | master, proc-v2 | +| [HBASE-16229](https://issues.apache.org/jira/browse/HBASE-16229) | Cleaning up size and heapSize calculation | Major | . | +| [HBASE-16592](https://issues.apache.org/jira/browse/HBASE-16592) | Unify Delete request with AP | Major | . | +| [HBASE-16596](https://issues.apache.org/jira/browse/HBASE-16596) | Reduce redundant interfaces in AsyncProcess | Major | . | +| [HBASE-16530](https://issues.apache.org/jira/browse/HBASE-16530) | Reduce DBE code duplication | Major | Performance | +| [HBASE-16445](https://issues.apache.org/jira/browse/HBASE-16445) | Refactor and reimplement RpcClient | Major | IPC/RPC, rpc | +| [HBASE-16516](https://issues.apache.org/jira/browse/HBASE-16516) | Revisit the implementation of PayloadCarryingRpcController | Major | rpc | +| [HBASE-16101](https://issues.apache.org/jira/browse/HBASE-16101) | Procedure v2 - Perf Tool for WAL | Major | proc-v2, tooling | +| [HBASE-16311](https://issues.apache.org/jira/browse/HBASE-16311) | Audit log for delete snapshot operation is missing in case of snapshot owner deleting the same | Minor | snapshots | +| [HBASE-16519](https://issues.apache.org/jira/browse/HBASE-16519) | Procedure v2 - Avoid sync wait on DDLs operation | Major | master, proc-v2 | +| [HBASE-16507](https://issues.apache.org/jira/browse/HBASE-16507) | Procedure v2 - Force DDL operation to always roll forward | Minor | master, proc-v2 | +| [HBASE-16526](https://issues.apache.org/jira/browse/HBASE-16526) | Add more ipc tests | Major | rpc, test | +| [HBASE-16532](https://issues.apache.org/jira/browse/HBASE-16532) | Procedure-V2: Enforce procedure ownership at submission | Major | proc-v2 | +| [HBASE-16531](https://issues.apache.org/jira/browse/HBASE-16531) | Move cell block related code out of IPCUtil | Major | rpc | +| [HBASE-16533](https://issues.apache.org/jira/browse/HBASE-16533) | Procedure v2 - Extract chore from the executor | Minor | proc-v2 | +| [HBASE-16522](https://issues.apache.org/jira/browse/HBASE-16522) | Procedure v2 - Cache system user and avoid IOException | Major | master, proc-v2 | +| [HBASE-16082](https://issues.apache.org/jira/browse/HBASE-16082) | Procedure v2 - Move out helpers from MasterProcedureScheduler | Trivial | proc-v2 | +| [HBASE-16510](https://issues.apache.org/jira/browse/HBASE-16510) | Reset RpcController before retry | Major | rpc | +| [HBASE-16407](https://issues.apache.org/jira/browse/HBASE-16407) | Handle MemstoreChunkPool size when HeapMemoryManager tunes memory | Major | . | +| [HBASE-16433](https://issues.apache.org/jira/browse/HBASE-16433) | Remove AsyncRpcChannel related stuffs | Major | rpc | +| [HBASE-16474](https://issues.apache.org/jira/browse/HBASE-16474) | Remove dfs.support.append related code and documentation | Major | fs, regionserver, wal | +| [HBASE-16451](https://issues.apache.org/jira/browse/HBASE-16451) | Procedure v2 - Test WAL protobuf entry size limit | Minor | proc-v2 | +| [HBASE-14921](https://issues.apache.org/jira/browse/HBASE-14921) | Inmemory Compaction Optimizations; Segment Structure | Major | . | +| [HBASE-16485](https://issues.apache.org/jira/browse/HBASE-16485) | Procedure V2 - Add support to addChildProcedure() as last "step" in StateMachineProcedure | Minor | proc-v2 | +| [HBASE-16440](https://issues.apache.org/jira/browse/HBASE-16440) | MemstoreChunkPool might cross its maxCount of chunks to pool | Major | . | +| [HBASE-16318](https://issues.apache.org/jira/browse/HBASE-16318) | fail build if license isn't in whitelist | Major | build, dependencies | +| [HBASE-16452](https://issues.apache.org/jira/browse/HBASE-16452) | Procedure v2 - Make ProcedureWALPrettyPrinter extend Tool | Minor | proc-v2 | +| [HBASE-16405](https://issues.apache.org/jira/browse/HBASE-16405) | Change read path Bloom check to work with Cells with out any copy | Major | Compaction | +| [HBASE-16094](https://issues.apache.org/jira/browse/HBASE-16094) | Procedure v2 - Improve cleaning up of proc wals | Major | proc-v2 | +| [HBASE-16378](https://issues.apache.org/jira/browse/HBASE-16378) | Procedure v2 - Make ProcedureException extend HBaseException | Trivial | proc-v2 | +| [HBASE-16404](https://issues.apache.org/jira/browse/HBASE-16404) | Make DeleteBloomFilters work with BloomContext | Minor | Compaction | +| [HBASE-15554](https://issues.apache.org/jira/browse/HBASE-15554) | StoreFile$Writer.appendGeneralBloomFilter generates extra KV | Major | Performance | +| [HBASE-16308](https://issues.apache.org/jira/browse/HBASE-16308) | Contain protobuf references | Major | Protobufs | +| [HBASE-16285](https://issues.apache.org/jira/browse/HBASE-16285) | Drop RPC requests if it must be considered as timeout at client | Major | . | +| [HBASE-16263](https://issues.apache.org/jira/browse/HBASE-16263) | Move all to do w/ protobuf -- \*.proto files and generated classes -- under hbase-protocol | Major | Protobufs | +| [HBASE-16317](https://issues.apache.org/jira/browse/HBASE-16317) | revert all ESAPI changes | Blocker | dependencies, security | +| [HBASE-16286](https://issues.apache.org/jira/browse/HBASE-16286) | When TagRewriteCell are not copied to MSLAB, deep clone it while adding to Memstore | Major | regionserver | +| [HBASE-16280](https://issues.apache.org/jira/browse/HBASE-16280) | Use hash based map in SequenceIdAccounting | Major | wal | +| [HBASE-16205](https://issues.apache.org/jira/browse/HBASE-16205) | When Cells are not copied to MSLAB, deep clone it while adding to Memstore | Critical | regionserver | +| [HBASE-14552](https://issues.apache.org/jira/browse/HBASE-14552) | Procedure V2: Reimplement DispatchMergingRegionHandler | Major | proc-v2 | +| [HBASE-16236](https://issues.apache.org/jira/browse/HBASE-16236) | Typo in javadoc of InstancePending | Trivial | Zookeeper | +| [HBASE-16233](https://issues.apache.org/jira/browse/HBASE-16233) | Procedure V2: Support acquire/release shared table lock concurrently | Major | proc-v2 | +| [HBASE-16219](https://issues.apache.org/jira/browse/HBASE-16219) | Move meta bootstrap out of HMaster | Trivial | master, Region Assignment | +| [HBASE-15305](https://issues.apache.org/jira/browse/HBASE-15305) | Fix a couple of incorrect anchors in HBase ref guide | Major | documentation | +| [HBASE-16195](https://issues.apache.org/jira/browse/HBASE-16195) | Should not add chunk into chunkQueue if not using chunk pool in HeapMemStoreLAB | Major | . | +| [HBASE-16208](https://issues.apache.org/jira/browse/HBASE-16208) | Make TableBasedReplicationQueuesImpl check that queue exists before attempting to remove it | Major | Replication | +| [HBASE-16214](https://issues.apache.org/jira/browse/HBASE-16214) | Add in UI description of Replication Table | Minor | Replication | +| [HBASE-16092](https://issues.apache.org/jira/browse/HBASE-16092) | Procedure v2 - complete child procedure support | Minor | proc-v2 | +| [HBASE-16194](https://issues.apache.org/jira/browse/HBASE-16194) | Should count in MSLAB chunk allocation into heap size change when adding duplicate cells | Major | regionserver | +| [HBASE-16176](https://issues.apache.org/jira/browse/HBASE-16176) | Bug fixes/improvements on HBASE-15650 Remove TimeRangeTracker as point of contention when many threads reading a StoreFile | Major | Performance | +| [HBASE-15935](https://issues.apache.org/jira/browse/HBASE-15935) | Have a separate Walker task running concurrently with Generator | Minor | integration tests | +| [HBASE-16162](https://issues.apache.org/jira/browse/HBASE-16162) | Compacting Memstore : unnecessary push of active segments to pipeline | Critical | . | +| [HBASE-15985](https://issues.apache.org/jira/browse/HBASE-15985) | clarify promises about edits from replication in ref guide | Major | documentation, Replication | +| [HBASE-16163](https://issues.apache.org/jira/browse/HBASE-16163) | Compacting Memstore : CompactionPipeline#addFirst can use LinkedList#addFirst | Minor | . | +| [HBASE-16164](https://issues.apache.org/jira/browse/HBASE-16164) | Missing close of new compacted segments in few occasions which might leak MSLAB chunks from pool | Critical | . | +| [HBASE-16155](https://issues.apache.org/jira/browse/HBASE-16155) | Compacting Memstore : Few log improvements | Minor | . | +| [HBASE-16153](https://issues.apache.org/jira/browse/HBASE-16153) | Correct the config name 'hbase.memestore.inmemoryflush.threshold.factor' | Trivial | . | +| [HBASE-16143](https://issues.apache.org/jira/browse/HBASE-16143) | Change MemstoreScanner constructor to accept List\ | Minor | . | +| [HBASE-16121](https://issues.apache.org/jira/browse/HBASE-16121) | Require only MasterServices to the ServerManager constructor | Trivial | master | +| [HBASE-16068](https://issues.apache.org/jira/browse/HBASE-16068) | Procedure v2 - use consts for conf properties in tests | Trivial | proc-v2, test | +| [HBASE-16083](https://issues.apache.org/jira/browse/HBASE-16083) | Fix table based replication related configs | Trivial | Replication | +| [HBASE-16080](https://issues.apache.org/jira/browse/HBASE-16080) | Fix flakey tests | Critical | Replication | +| [HBASE-16036](https://issues.apache.org/jira/browse/HBASE-16036) | Fix ReplicationTableBase initialization to make it non-blocking | Major | Replication | +| [HBASE-14878](https://issues.apache.org/jira/browse/HBASE-14878) | maven archetype: client application with shaded jars | Major | build, Usability | +| [HBASE-14877](https://issues.apache.org/jira/browse/HBASE-14877) | maven archetype: client application | Major | build, Usability | +| [HBASE-16056](https://issues.apache.org/jira/browse/HBASE-16056) | Procedure v2 - fix master crash for FileNotFound | Minor | proc-v2 | +| [HBASE-16038](https://issues.apache.org/jira/browse/HBASE-16038) | Ignore JVM crashes or machine shutdown failures in report-flakies | Major | . | +| [HBASE-15999](https://issues.apache.org/jira/browse/HBASE-15999) | NPE in MemstoreCompactor | Critical | . | +| [HBASE-16034](https://issues.apache.org/jira/browse/HBASE-16034) | Fix ProcedureTestingUtility#LoadCounter.setMaxProcId() | Minor | proc-v2, test | +| [HBASE-15974](https://issues.apache.org/jira/browse/HBASE-15974) | Create a ReplicationQueuesClientHBaseImpl | Major | Replication | +| [HBASE-16023](https://issues.apache.org/jira/browse/HBASE-16023) | Fastpath for the FIFO rpcscheduler | Major | Performance, rpc | +| [HBASE-15525](https://issues.apache.org/jira/browse/HBASE-15525) | OutOfMemory could occur when using BoundedByteBufferPool during RPC bursts | Critical | IPC/RPC | +| [HBASE-15991](https://issues.apache.org/jira/browse/HBASE-15991) | CompactingMemstore#InMemoryFlushRunnable should implement Comparable/Comparator | Critical | . | +| [HBASE-15272](https://issues.apache.org/jira/browse/HBASE-15272) | Add error handling for split and compact actions in table.jsp | Major | UI | +| [HBASE-15994](https://issues.apache.org/jira/browse/HBASE-15994) | Allow selection of RpcSchedulers | Major | . | +| [HBASE-15107](https://issues.apache.org/jira/browse/HBASE-15107) | Procedure V2 - Procedure Queue with Regions | Major | proc-v2 | +| [HBASE-15948](https://issues.apache.org/jira/browse/HBASE-15948) | Port "HADOOP-9956 RPC listener inefficiently assigns connections to readers" | Major | IPC/RPC | +| [HBASE-15174](https://issues.apache.org/jira/browse/HBASE-15174) | Client Public API should not have PB objects in 2.0 | Blocker | . | +| [HBASE-15883](https://issues.apache.org/jira/browse/HBASE-15883) | Adding WAL files and tracking offsets in HBase. | Major | Replication | +| [HBASE-15927](https://issues.apache.org/jira/browse/HBASE-15927) | Remove HMaster.assignRegion() | Trivial | test | +| [HBASE-15917](https://issues.apache.org/jira/browse/HBASE-15917) | Flaky tests dashboard | Major | . | +| [HBASE-15919](https://issues.apache.org/jira/browse/HBASE-15919) | Document @Rule vs @ClassRule. Also clarify timeout limits are on TestCase. | Minor | . | +| [HBASE-15915](https://issues.apache.org/jira/browse/HBASE-15915) | Set timeouts on hanging tests | Major | . | +| [HBASE-15896](https://issues.apache.org/jira/browse/HBASE-15896) | Add timeout tests to flaky list from report-flakies.py | Major | test | +| [HBASE-14920](https://issues.apache.org/jira/browse/HBASE-14920) | Compacting Memstore | Major | . | +| [HBASE-15872](https://issues.apache.org/jira/browse/HBASE-15872) | Split TestWALProcedureStore | Trivial | proc-v2, test | +| [HBASE-15865](https://issues.apache.org/jira/browse/HBASE-15865) | Move TestTableDeleteFamilyHandler and TestTableDescriptorModification handler tests to procedure | Trivial | test | +| [HBASE-15651](https://issues.apache.org/jira/browse/HBASE-15651) | Add report-flakies.py to use jenkins api to get failing tests | Major | . | +| [HBASE-15825](https://issues.apache.org/jira/browse/HBASE-15825) | Fix the null pointer in DynamicLogicExpressionSuite | Major | . | +| [HBASE-15813](https://issues.apache.org/jira/browse/HBASE-15813) | Rename DefaultWALProvider to a more specific name and clean up unnecessary reference to it | Major | wal | +| [HBASE-15785](https://issues.apache.org/jira/browse/HBASE-15785) | Unnecessary lock in ByteBufferArray | Major | regionserver, Scanners | +| [HBASE-15740](https://issues.apache.org/jira/browse/HBASE-15740) | Replication source.shippedKBs metric is undercounting because it is in KB | Major | . | +| [HBASE-15776](https://issues.apache.org/jira/browse/HBASE-15776) | Replace master.am.getTableStateManager() with the direct master.getTableStateManager() | Trivial | master | +| [HBASE-15778](https://issues.apache.org/jira/browse/HBASE-15778) | replace master.am and master.sm direct access with getter calls | Trivial | master | +| [HBASE-15743](https://issues.apache.org/jira/browse/HBASE-15743) | Add Transparent Data Encryption support for FanOutOneBlockAsyncDFSOutput | Major | wal | +| [HBASE-15763](https://issues.apache.org/jira/browse/HBASE-15763) | Isolate Wal related stuff from MasterFileSystem | Trivial | master, wal | +| [HBASE-15754](https://issues.apache.org/jira/browse/HBASE-15754) | Add testcase for AES encryption | Major | wal | +| [HBASE-15337](https://issues.apache.org/jira/browse/HBASE-15337) | Document date tiered compaction in the book | Major | documentation | +| [HBASE-15675](https://issues.apache.org/jira/browse/HBASE-15675) | Add more details about region on table.jsp | Major | . | +| [HBASE-15658](https://issues.apache.org/jira/browse/HBASE-15658) | RegionServerCallable / RpcRetryingCaller clear meta cache on retries | Critical | Client | +| [HBASE-15735](https://issues.apache.org/jira/browse/HBASE-15735) | Tightening of the CP contract | Major | regionserver, Scanners | +| [HBASE-15477](https://issues.apache.org/jira/browse/HBASE-15477) | Do not save 'next block header' when we cache hfileblocks | Major | BlockCache, Performance | +| [HBASE-15689](https://issues.apache.org/jira/browse/HBASE-15689) | Changes to hbase-personality.sh to include/exclude flaky tests | Major | . | +| [HBASE-15628](https://issues.apache.org/jira/browse/HBASE-15628) | Implement an AsyncOutputStream which can work with any FileSystem implementation | Major | . | +| [HBASE-15579](https://issues.apache.org/jira/browse/HBASE-15579) | Procedure V2 - Remove synchronized around nonce in Procedure submit | Trivial | proc-v2 | +| [HBASE-15392](https://issues.apache.org/jira/browse/HBASE-15392) | Single Cell Get reads two HFileBlocks | Major | BucketCache | +| [HBASE-15671](https://issues.apache.org/jira/browse/HBASE-15671) | Add per-table metrics on memstore, storefile and regionsize | Major | . | +| [HBASE-15366](https://issues.apache.org/jira/browse/HBASE-15366) | Add doc, trace-level logging, and test around hfileblock | Major | BlockCache | +| [HBASE-15683](https://issues.apache.org/jira/browse/HBASE-15683) | Min latency in latency histograms are emitted as Long.MAX\_VALUE | Major | . | +| [HBASE-15368](https://issues.apache.org/jira/browse/HBASE-15368) | Add pluggable window support | Major | Compaction | +| [HBASE-15663](https://issues.apache.org/jira/browse/HBASE-15663) | Hook up JvmPauseMonitor to ThriftServer | Major | metrics, Thrift | +| [HBASE-15662](https://issues.apache.org/jira/browse/HBASE-15662) | Hook up JvmPauseMonitor to REST server | Major | metrics, REST | +| [HBASE-15518](https://issues.apache.org/jira/browse/HBASE-15518) | Add Per-Table metrics back | Major | . | +| [HBASE-15640](https://issues.apache.org/jira/browse/HBASE-15640) | L1 cache doesn't give fair warning that it is showing partial stats only when it hits limit | Major | BlockCache | +| [HBASE-15386](https://issues.apache.org/jira/browse/HBASE-15386) | PREFETCH\_BLOCKS\_ON\_OPEN in HColumnDescriptor is ignored | Major | BucketCache | +| [HBASE-15665](https://issues.apache.org/jira/browse/HBASE-15665) | Support using different StoreFileComparators for different CompactionPolicies | Major | Compaction | +| [HBASE-15527](https://issues.apache.org/jira/browse/HBASE-15527) | Refactor Compactor related classes | Major | Compaction | +| [HBASE-15407](https://issues.apache.org/jira/browse/HBASE-15407) | Add SASL support for fan out OutputStream | Major | util, wal | +| [HBASE-15380](https://issues.apache.org/jira/browse/HBASE-15380) | Purge rollback support in Store etc. | Major | . | +| [HBASE-15537](https://issues.apache.org/jira/browse/HBASE-15537) | Make multi WAL work with WALs other than FSHLog | Major | . | +| [HBASE-15400](https://issues.apache.org/jira/browse/HBASE-15400) | Use DateTieredCompactor for Date Tiered Compaction | Major | Compaction | +| [HBASE-15369](https://issues.apache.org/jira/browse/HBASE-15369) | Handle NPE in region.jsp | Minor | UI | +| [HBASE-15505](https://issues.apache.org/jira/browse/HBASE-15505) | ReplicationPeerConfig should be builder-style | Major | . | +| [HBASE-15293](https://issues.apache.org/jira/browse/HBASE-15293) | Handle TableNotFound and IllegalArgument exceptions in table.jsp | Major | UI | +| [HBASE-15538](https://issues.apache.org/jira/browse/HBASE-15538) | Implement secure async protobuf wal writer | Major | wal | +| [HBASE-15389](https://issues.apache.org/jira/browse/HBASE-15389) | Write out multiple files when compaction | Major | Compaction | +| [HBASE-15384](https://issues.apache.org/jira/browse/HBASE-15384) | Avoid using '/tmp' directory in TestBulkLoad | Major | test | +| [HBASE-15524](https://issues.apache.org/jira/browse/HBASE-15524) | Fix NPE in client-side metrics | Critical | Client, metrics | +| [HBASE-15495](https://issues.apache.org/jira/browse/HBASE-15495) | Connection leak in FanOutOneBlockAsyncDFSOutputHelper | Major | . | +| [HBASE-15416](https://issues.apache.org/jira/browse/HBASE-15416) | TestHFileBackedByBucketCache is flakey since it went in | Critical | BucketCache | +| [HBASE-15412](https://issues.apache.org/jira/browse/HBASE-15412) | Add average region size metric | Major | . | +| [HBASE-15488](https://issues.apache.org/jira/browse/HBASE-15488) | Add ACL for setting split merge switch | Major | . | +| [HBASE-15464](https://issues.apache.org/jira/browse/HBASE-15464) | Flush / Compaction metrics revisited | Major | metrics | +| [HBASE-15460](https://issues.apache.org/jira/browse/HBASE-15460) | Fix infer issues in hbase-common | Major | . | +| [HBASE-15479](https://issues.apache.org/jira/browse/HBASE-15479) | No more garbage or beware of autoboxing | Major | Client | +| [HBASE-15334](https://issues.apache.org/jira/browse/HBASE-15334) | Add avro support for spark hbase connector | Major | . | +| [HBASE-15390](https://issues.apache.org/jira/browse/HBASE-15390) | Unnecessary MetaCache evictions cause elevated number of requests to meta | Blocker | Client | +| [HBASE-15180](https://issues.apache.org/jira/browse/HBASE-15180) | Reduce garbage created while reading Cells from Codec Decoder | Major | regionserver | +| [HBASE-15435](https://issues.apache.org/jira/browse/HBASE-15435) | Add WAL (in bytes) written metric | Major | . | +| [HBASE-15113](https://issues.apache.org/jira/browse/HBASE-15113) | Procedure v2 - Speedup eviction of sys operation results | Minor | proc-v2 | +| [HBASE-15422](https://issues.apache.org/jira/browse/HBASE-15422) | Procedure v2 - Avoid double yield | Major | proc-v2 | +| [HBASE-15421](https://issues.apache.org/jira/browse/HBASE-15421) | Convert TestStoreScanner to junit4 from junit3 and clean up close of scanners | Minor | test | +| [HBASE-15354](https://issues.apache.org/jira/browse/HBASE-15354) | Use same criteria for clearing meta cache for all operations | Major | Client | +| [HBASE-15373](https://issues.apache.org/jira/browse/HBASE-15373) | DEPRECATED\_NAME\_OF\_NO\_LIMIT\_THROUGHPUT\_CONTROLLER\_CLASS value is wrong in CompactionThroughputControllerFactory | Minor | Compaction | +| [HBASE-15375](https://issues.apache.org/jira/browse/HBASE-15375) | Do not write to '/tmp' in TestRegionMover | Major | test | +| [HBASE-15359](https://issues.apache.org/jira/browse/HBASE-15359) | Simplifying Segment hierarchy | Major | . | +| [HBASE-15371](https://issues.apache.org/jira/browse/HBASE-15371) | Procedure V2 - Completed support parent-child procedure | Major | proc-v2 | +| [HBASE-15365](https://issues.apache.org/jira/browse/HBASE-15365) | Do not write to '/tmp' in TestHBaseConfiguration | Major | test | +| [HBASE-15346](https://issues.apache.org/jira/browse/HBASE-15346) | add 1.3 RM to docs | Major | documentation | +| [HBASE-15351](https://issues.apache.org/jira/browse/HBASE-15351) | Fix description of hbase.bucketcache.size in hbase-default.xml | Major | documentation | +| [HBASE-15205](https://issues.apache.org/jira/browse/HBASE-15205) | Do not find the replication scope for every WAL#append() | Minor | regionserver | +| [HBASE-15311](https://issues.apache.org/jira/browse/HBASE-15311) | Prevent NPE in BlockCacheViewTmpl | Major | UI | +| [HBASE-15144](https://issues.apache.org/jira/browse/HBASE-15144) | Procedure v2 - Web UI displaying Store state | Minor | proc-v2, UI | +| [HBASE-15264](https://issues.apache.org/jira/browse/HBASE-15264) | Implement a fan out HDFS OutputStream | Major | util, wal | +| [HBASE-15016](https://issues.apache.org/jira/browse/HBASE-15016) | StoreServices facility in Region | Major | . | +| [HBASE-15232](https://issues.apache.org/jira/browse/HBASE-15232) | Exceptions returned over multi RPC don't automatically trigger region location reloads | Major | Client | +| [HBASE-14949](https://issues.apache.org/jira/browse/HBASE-14949) | Resolve name conflict when splitting if there are duplicated WAL entries | Major | wal | +| [HBASE-15270](https://issues.apache.org/jira/browse/HBASE-15270) | Use appropriate encoding for "filter" field in TaskMonitorTmpl.jamon | Major | UI | +| [HBASE-15263](https://issues.apache.org/jira/browse/HBASE-15263) | TestIPv6NIOServerSocketChannel.testServerSocketFromLocalhostResolution can hang indefinetly | Major | . | +| [HBASE-15244](https://issues.apache.org/jira/browse/HBASE-15244) | More doc around native lib setup and check and crc | Major | documentation, Performance | +| [HBASE-15203](https://issues.apache.org/jira/browse/HBASE-15203) | Reduce garbage created by path.toString() during Checksum verification | Minor | regionserver | +| [HBASE-14919](https://issues.apache.org/jira/browse/HBASE-14919) | Infrastructure refactoring for In-Memory Flush | Major | . | +| [HBASE-15204](https://issues.apache.org/jira/browse/HBASE-15204) | Try to estimate the cell count for adding into WALEdit | Major | regionserver | +| [HBASE-15239](https://issues.apache.org/jira/browse/HBASE-15239) | Remove unused LoadBalancer.immediateAssignment() | Trivial | Balancer | +| [HBASE-15238](https://issues.apache.org/jira/browse/HBASE-15238) | HFileReaderV2 prefetch overreaches; runs off the end of the data | Major | . | +| [HBASE-15046](https://issues.apache.org/jira/browse/HBASE-15046) | Perf test doing all mutation steps under row lock | Major | Performance | +| [HBASE-15158](https://issues.apache.org/jira/browse/HBASE-15158) | Change order in which we do write pipeline operations; do all under row locks! | Major | Performance | +| [HBASE-15163](https://issues.apache.org/jira/browse/HBASE-15163) | Add sampling code and metrics for get/scan/multi/mutate count separately | Major | . | +| [HBASE-15157](https://issues.apache.org/jira/browse/HBASE-15157) | Add \*PerformanceTest for Append, CheckAnd\* | Major | Performance, test | +| [HBASE-15094](https://issues.apache.org/jira/browse/HBASE-15094) | Selection of WAL files eligible for incremental backup is broken | Major | . | +| [HBASE-15210](https://issues.apache.org/jira/browse/HBASE-15210) | Undo aggressive load balancer logging at tens of lines per millisecond | Major | Balancer | +| [HBASE-15202](https://issues.apache.org/jira/browse/HBASE-15202) | Reduce garbage while setting response | Minor | regionserver | +| [HBASE-15194](https://issues.apache.org/jira/browse/HBASE-15194) | TestStochasticLoadBalancer.testRegionReplicationOnMidClusterSameHosts flaky on trunk | Major | flakey, test | +| [HBASE-14841](https://issues.apache.org/jira/browse/HBASE-14841) | Allow Dictionary to work with BytebufferedCells | Major | regionserver, Scanners | +| [HBASE-15142](https://issues.apache.org/jira/browse/HBASE-15142) | Procedure v2 - Basic WebUI listing the procedures | Minor | proc-v2, UI | +| [HBASE-15171](https://issues.apache.org/jira/browse/HBASE-15171) | Avoid counting duplicate kv and generating lots of small hfiles in PutSortReducer | Major | . | +| [HBASE-15106](https://issues.apache.org/jira/browse/HBASE-15106) | Procedure V2 - Procedure Queue pass Procedure for better debuggability | Major | proc-v2 | +| [HBASE-14221](https://issues.apache.org/jira/browse/HBASE-14221) | Reduce the number of time row comparison is done in a Scan | Major | Scanners | +| [HBASE-15118](https://issues.apache.org/jira/browse/HBASE-15118) | Fix findbugs complaint in hbase-server | Major | build | +| [HBASE-15115](https://issues.apache.org/jira/browse/HBASE-15115) | Fix findbugs complaints in hbase-client | Major | build | +| [HBASE-14962](https://issues.apache.org/jira/browse/HBASE-14962) | TestSplitWalDataLoss fails on all branches | Blocker | test | +| [HBASE-15114](https://issues.apache.org/jira/browse/HBASE-15114) | NPE when IPC server ByteBuffer reservoir is turned off | Major | . | +| [HBASE-15105](https://issues.apache.org/jira/browse/HBASE-15105) | Procedure V2 - Procedure Queue with Namespaces | Major | proc-v2 | +| [HBASE-14837](https://issues.apache.org/jira/browse/HBASE-14837) | Procedure V2 - Procedure Queue Improvement | Minor | proc-v2 | +| [HBASE-15095](https://issues.apache.org/jira/browse/HBASE-15095) | isReturnResult=false on fast path in branch-1.1 and branch-1.0 is not respected | Major | Performance | +| [HBASE-15087](https://issues.apache.org/jira/browse/HBASE-15087) | Fix hbase-common findbugs complaints | Major | build | +| [HBASE-15077](https://issues.apache.org/jira/browse/HBASE-15077) | Support OffheapKV write in compaction with out copying data on heap | Major | regionserver, Scanners | +| [HBASE-12593](https://issues.apache.org/jira/browse/HBASE-12593) | Tags to work with ByteBuffer | Major | regionserver, Scanners | +| [HBASE-14488](https://issues.apache.org/jira/browse/HBASE-14488) | Procedure V2 - shell command to abort a procedure | Major | proc-v2 | +| [HBASE-14487](https://issues.apache.org/jira/browse/HBASE-14487) | Procedure V2 - shell command to list all procedures | Major | proc-v2, shell | +| [HBASE-14108](https://issues.apache.org/jira/browse/HBASE-14108) | Procedure V2 - Administrative Task: provide an API to abort a procedure | Major | proc-v2 | +| [HBASE-14432](https://issues.apache.org/jira/browse/HBASE-14432) | Procedure V2 - enforce ACL on procedure admin tasks | Major | proc-v2 | +| [HBASE-14107](https://issues.apache.org/jira/browse/HBASE-14107) | Procedure V2 - Administrative Task: Provide an API to List all procedures | Major | proc-v2 | +| [HBASE-15023](https://issues.apache.org/jira/browse/HBASE-15023) | Reenable TestShell and TestStochasticLoadBalancer | Major | test | +| [HBASE-14908](https://issues.apache.org/jira/browse/HBASE-14908) | TestRowCounter flakey especially on branch-1 | Major | flakey, test | +| [HBASE-14863](https://issues.apache.org/jira/browse/HBASE-14863) | Add missing test/resources/log4j files in hbase modules | Trivial | test | +| [HBASE-14947](https://issues.apache.org/jira/browse/HBASE-14947) | Procedure V2 - WALProcedureStore improvements | Blocker | proc-v2 | +| [HBASE-14895](https://issues.apache.org/jira/browse/HBASE-14895) | Seek only to the newly flushed file on scanner reset on flush | Major | . | +| [HBASE-14655](https://issues.apache.org/jira/browse/HBASE-14655) | Narrow the scope of doAs() calls to region observer notifications for compaction | Blocker | Coprocessors, security | +| [HBASE-14631](https://issues.apache.org/jira/browse/HBASE-14631) | Region merge request should be audited with request user through proper scope of doAs() calls to region observer notifications | Blocker | Coprocessors, security | +| [HBASE-14605](https://issues.apache.org/jira/browse/HBASE-14605) | Split fails due to 'No valid credentials' error when SecureBulkLoadEndpoint#start tries to access hdfs | Blocker | Coprocessors, security | +| [HBASE-14772](https://issues.apache.org/jira/browse/HBASE-14772) | Improve zombie detector; be more discerning | Major | test | +| [HBASE-14884](https://issues.apache.org/jira/browse/HBASE-14884) | TestSplitTransactionOnCluster.testSSHCleanupDaugtherRegionsOfAbortedSplit is flakey | Major | flakey, test | +| [HBASE-14909](https://issues.apache.org/jira/browse/HBASE-14909) | NPE testing for RIT | Major | test | +| [HBASE-14575](https://issues.apache.org/jira/browse/HBASE-14575) | Relax region read lock for compactions | Major | Compaction, regionserver | +| [HBASE-14819](https://issues.apache.org/jira/browse/HBASE-14819) | hbase-it tests failing with OOME; permgen | Major | test | +| [HBASE-14832](https://issues.apache.org/jira/browse/HBASE-14832) | Ensure write paths work with ByteBufferedCells in case of compaction | Minor | regionserver, Scanners | +| [HBASE-14798](https://issues.apache.org/jira/browse/HBASE-14798) | NPE reporting server load causes regionserver abort; causes TestAcidGuarantee to fail | Major | test | +| [HBASE-14794](https://issues.apache.org/jira/browse/HBASE-14794) | Cleanup TestAtomicOperation, TestImportExport, and TestMetaWithReplicas | Major | flakey, test | +| [HBASE-14785](https://issues.apache.org/jira/browse/HBASE-14785) | Hamburger menu for mobile site | Major | website | +| [HBASE-14786](https://issues.apache.org/jira/browse/HBASE-14786) | TestProcedureAdmin hangs | Major | hangingTests, test | +| [HBASE-14589](https://issues.apache.org/jira/browse/HBASE-14589) | Looking for the surefire-killer; builds being killed...ExecutionException: java.lang.RuntimeException: The forked VM terminated without properly saying goodbye. VM crash or System.exit called? | Major | test | +| [HBASE-14725](https://issues.apache.org/jira/browse/HBASE-14725) | Vet categorization of tests so they for sure go into the right small/medium/large buckets | Major | test | +| [HBASE-14638](https://issues.apache.org/jira/browse/HBASE-14638) | Move Jython info from the Wiki to the Ref Guide | Major | documentation | +| [HBASE-14639](https://issues.apache.org/jira/browse/HBASE-14639) | Move Scala info from Wiki to Ref Guide | Major | documentation | +| [HBASE-13478](https://issues.apache.org/jira/browse/HBASE-13478) | Document the change of default master ports being used . | Minor | documentation | +| [HBASE-14641](https://issues.apache.org/jira/browse/HBASE-14641) | Move JDO example from Wiki to Ref Guide | Major | documentation | +| [HBASE-14640](https://issues.apache.org/jira/browse/HBASE-14640) | Move Cascading info from Wiki to Ref Guide | Major | documentation | +| [HBASE-14720](https://issues.apache.org/jira/browse/HBASE-14720) | Make TestHCM and TestMetaWithReplicas large tests rather than mediums | Major | hangingTests, test | +| [HBASE-14710](https://issues.apache.org/jira/browse/HBASE-14710) | Add category-based timeouts to MR tests | Major | hangingTests, mapreduce, test | +| [HBASE-14709](https://issues.apache.org/jira/browse/HBASE-14709) | Parent change breaks graceful\_stop.sh on a cluster | Major | Operability | +| [HBASE-14702](https://issues.apache.org/jira/browse/HBASE-14702) | TestZKProcedureControllers.testZKCoordinatorControllerWithSingleMemberCohort is a flakey | Major | flakey, test | +| [HBASE-14698](https://issues.apache.org/jira/browse/HBASE-14698) | Set category timeouts on TestScanner and TestNamespaceAuditor | Major | test | +| [HBASE-14648](https://issues.apache.org/jira/browse/HBASE-14648) | Reenable TestWALProcedureStoreOnHDFS#testWalRollOnLowReplication | Critical | test | +| [HBASE-14685](https://issues.apache.org/jira/browse/HBASE-14685) | Procedure Id is not set for MasterRpcServices#modifyTable | Major | master, proc-v2 | +| [HBASE-14535](https://issues.apache.org/jira/browse/HBASE-14535) | Integration test for rpc connection concurrency / deadlock testing | Major | IPC/RPC | +| [HBASE-14657](https://issues.apache.org/jira/browse/HBASE-14657) | Remove unneeded API from EncodedSeeker | Major | io | +| [HBASE-13538](https://issues.apache.org/jira/browse/HBASE-13538) | Procedure v2 - client add/delete/modify column family sync (incompatible with branch-1.x) | Major | proc-v2 | +| [HBASE-14662](https://issues.apache.org/jira/browse/HBASE-14662) | Fix NPE in HFileOutputFormat2 | Major | . | +| [HBASE-14636](https://issues.apache.org/jira/browse/HBASE-14636) | Clear HFileScannerImpl#prevBlocks in between Compaction flow | Blocker | regionserver, Scanners | +| [HBASE-14595](https://issues.apache.org/jira/browse/HBASE-14595) | For Wiki contents that are also in the Ref Guide, replace content with a URL | Major | documentation | +| [HBASE-14646](https://issues.apache.org/jira/browse/HBASE-14646) | Move TestCellACLs from medium to large category | Minor | test | +| [HBASE-14647](https://issues.apache.org/jira/browse/HBASE-14647) | Disable TestWALProcedureStoreOnHDFS#testWalRollOnLowReplication | Major | test | +| [HBASE-14637](https://issues.apache.org/jira/browse/HBASE-14637) | Loosen TestChoreService assert AND have TestDataBlockEncoders do less work (and add timeouts) | Major | test | +| [HBASE-14627](https://issues.apache.org/jira/browse/HBASE-14627) | Move Stargate docs to Ref Guide | Major | documentation | +| [HBASE-14607](https://issues.apache.org/jira/browse/HBASE-14607) | Convert SupportingProjects wiki page to a site page | Major | documentation | +| [HBASE-14570](https://issues.apache.org/jira/browse/HBASE-14570) | Split TestHBaseFsck in order to help with hanging tests | Major | test | +| [HBASE-14602](https://issues.apache.org/jira/browse/HBASE-14602) | Convert HBasePoweredBy Wiki page to a hbase.apache.org page | Major | documentation | +| [HBASE-14596](https://issues.apache.org/jira/browse/HBASE-14596) | TestCellACLs failing... on1.2 builds | Major | test | +| [HBASE-14600](https://issues.apache.org/jira/browse/HBASE-14600) | Make #testWalRollOnLowReplication looser still | Major | test | +| [HBASE-13819](https://issues.apache.org/jira/browse/HBASE-13819) | Make RPC layer CellBlock buffer a DirectByteBuffer | Major | Scanners | +| [HBASE-14558](https://issues.apache.org/jira/browse/HBASE-14558) | Document ChaosMonkey enhancements from HBASE-14261 | Major | documentation | +| [HBASE-14590](https://issues.apache.org/jira/browse/HBASE-14590) | Shorten ByteBufferedCell#getXXXPositionInByteBuffer method name | Major | regionserver, Scanners | +| [HBASE-14585](https://issues.apache.org/jira/browse/HBASE-14585) | Clean up TestSnapshotCloneIndependence | Major | flakey, test | +| [HBASE-14567](https://issues.apache.org/jira/browse/HBASE-14567) | Tuneup hanging test TestMobCompactor and TestMobSweeper | Major | test | +| [HBASE-14572](https://issues.apache.org/jira/browse/HBASE-14572) | TestImportExport#testImport94Table can't find its src data file | Major | test | +| [HBASE-14571](https://issues.apache.org/jira/browse/HBASE-14571) | Purge TestProcessBasedCluster; it does nothing and then fails | Major | test | +| [HBASE-14519](https://issues.apache.org/jira/browse/HBASE-14519) | Purge TestFavoredNodeAssignmentHelper, a test for an abandoned feature that can hang | Major | test | +| [HBASE-14563](https://issues.apache.org/jira/browse/HBASE-14563) | Disable zombie TestHFileOutputFormat2 | Major | test | +| [HBASE-14561](https://issues.apache.org/jira/browse/HBASE-14561) | Disable zombie TestReplicationShell | Major | test | +| [HBASE-14559](https://issues.apache.org/jira/browse/HBASE-14559) | branch-1 test tweeks; disable assert explicit region lands post-restart and up a few handlers | Major | test | +| [HBASE-14480](https://issues.apache.org/jira/browse/HBASE-14480) | Small optimization in SingleByteBuff | Major | regionserver, Scanners | +| [HBASE-14539](https://issues.apache.org/jira/browse/HBASE-14539) | Slight improvement of StoreScanner.optimize | Minor | Performance, Scanners | +| [HBASE-14543](https://issues.apache.org/jira/browse/HBASE-14543) | Have findHangingTests.py dump more info | Major | tooling | +| [HBASE-14513](https://issues.apache.org/jira/browse/HBASE-14513) | TestBucketCache runs obnoxious 1k threads in a unit test | Major | test | +| [HBASE-14495](https://issues.apache.org/jira/browse/HBASE-14495) | TestHRegion#testFlushCacheWhileScanning goes zombie | Major | test | +| [HBASE-14507](https://issues.apache.org/jira/browse/HBASE-14507) | Disable TestDistributedLogSplitting#testWorkerAbort Its flakey with tenuous chance of success | Major | test | +| [HBASE-14398](https://issues.apache.org/jira/browse/HBASE-14398) | Create the fake keys required in the scan path to avoid copy to byte[] | Major | . | +| [HBASE-14430](https://issues.apache.org/jira/browse/HBASE-14430) | TestHttpServerLifecycle#testStartedServerIsAlive times out | Major | test | +| [HBASE-14212](https://issues.apache.org/jira/browse/HBASE-14212) | Add IT test for procedure-v2-based namespace DDL | Major | proc-v2 | +| [HBASE-14051](https://issues.apache.org/jira/browse/HBASE-14051) | Undo workarounds in IntegrationTestDDLMasterFailover for client double submit | Major | master | +| [HBASE-12748](https://issues.apache.org/jira/browse/HBASE-12748) | RegionCoprocessorHost.execOperation creates too many iterator objects | Major | . | +| [HBASE-14378](https://issues.apache.org/jira/browse/HBASE-14378) | Get TestAccessController\* passing again on branch-1 | Major | . | +| [HBASE-14484](https://issues.apache.org/jira/browse/HBASE-14484) | Follow-on from HBASE-14421, just disable TestFastFail\* until someone digs in and fixes it | Major | test | +| [HBASE-14464](https://issues.apache.org/jira/browse/HBASE-14464) | Removed unused fs code | Minor | regionserver | +| [HBASE-14472](https://issues.apache.org/jira/browse/HBASE-14472) | TestHCM and TestRegionServerNoMaster fixes | Minor | test | +| [HBASE-14147](https://issues.apache.org/jira/browse/HBASE-14147) | REST Support for Namespaces | Minor | REST | +| [HBASE-14447](https://issues.apache.org/jira/browse/HBASE-14447) | Spark tests failing: bind exception when putting up info server | Minor | test | +| [HBASE-14278](https://issues.apache.org/jira/browse/HBASE-14278) | Fix NPE that is showing up since HBASE-14274 went in | Major | test | +| [HBASE-14433](https://issues.apache.org/jira/browse/HBASE-14433) | Set down the client executor core thread count from 256 in tests | Major | test | +| [HBASE-14401](https://issues.apache.org/jira/browse/HBASE-14401) | Stamp failed appends with sequenceid too.... Cleans up latches | Major | test, wal | +| [HBASE-14435](https://issues.apache.org/jira/browse/HBASE-14435) | thrift tests don't have test-specific hbase-site.xml so 'BindException: Address already in use' because info port is not turned off | Major | test | +| [HBASE-14428](https://issues.apache.org/jira/browse/HBASE-14428) | Upgrade our surefire-plugin from 2.18 to 2.18.1 | Major | test | +| [HBASE-14421](https://issues.apache.org/jira/browse/HBASE-14421) | TestFastFail\* are flakey | Major | test | +| [HBASE-14423](https://issues.apache.org/jira/browse/HBASE-14423) | TestStochasticBalancerJmxMetrics.testJmxMetrics\_PerTableMode:183 NullPointer | Major | test | +| [HBASE-14395](https://issues.apache.org/jira/browse/HBASE-14395) | Short circuit last byte check in CellUtil#matchingXXX methods for ByteBufferedCells | Major | regionserver, Scanners | +| [HBASE-14368](https://issues.apache.org/jira/browse/HBASE-14368) | New TestWALLockup broken by addendum added to parent issue | Major | test | +| [HBASE-14322](https://issues.apache.org/jira/browse/HBASE-14322) | Master still not using more than it's priority threads | Major | IPC/RPC, master | +| [HBASE-13212](https://issues.apache.org/jira/browse/HBASE-13212) | Procedure V2 - master Create/Modify/Delete namespace | Major | master | +| [HBASE-14239](https://issues.apache.org/jira/browse/HBASE-14239) | Branch-1.2 AM can get stuck when meta moves | Major | Region Assignment | +| [HBASE-14274](https://issues.apache.org/jira/browse/HBASE-14274) | Deadlock in region metrics on shutdown: MetricsRegionSourceImpl vs MetricsRegionAggregateSourceImpl | Major | test | +| [HBASE-14186](https://issues.apache.org/jira/browse/HBASE-14186) | Read mvcc vlong optimization | Major | Performance, Scanners | +| [HBASE-14144](https://issues.apache.org/jira/browse/HBASE-14144) | Bloomfilter path to work with Byte buffered cells | Major | regionserver, Scanners | +| [HBASE-14087](https://issues.apache.org/jira/browse/HBASE-14087) | ensure correct ASF policy compliant headers on source/docs | Blocker | build | +| [HBASE-14202](https://issues.apache.org/jira/browse/HBASE-14202) | Reduce garbage we create | Major | regionserver, Scanners | +| [HBASE-14105](https://issues.apache.org/jira/browse/HBASE-14105) | Add shell tests for Snapshot | Major | test | +| [HBASE-14188](https://issues.apache.org/jira/browse/HBASE-14188) | Read path optimizations after HBASE-11425 profiling | Major | Scanners | +| [HBASE-14176](https://issues.apache.org/jira/browse/HBASE-14176) | Add missing headers to META-INF files | Trivial | build | +| [HBASE-14086](https://issues.apache.org/jira/browse/HBASE-14086) | remove unused bundled dependencies | Blocker | documentation | +| [HBASE-14063](https://issues.apache.org/jira/browse/HBASE-14063) | Use BufferBackedCell in read path after HBASE-12213 and HBASE-12295 | Major | regionserver, Scanners | +| [HBASE-12295](https://issues.apache.org/jira/browse/HBASE-12295) | Prevent block eviction under us if reads are in progress from the BBs | Major | regionserver, Scanners | +| [HBASE-14116](https://issues.apache.org/jira/browse/HBASE-14116) | Change ByteBuff.getXXXStrictlyForward to relative position based reads | Major | . | +| [HBASE-12374](https://issues.apache.org/jira/browse/HBASE-12374) | Change DBEs to work with new BB based cell | Major | regionserver, Scanners | +| [HBASE-14120](https://issues.apache.org/jira/browse/HBASE-14120) | ByteBufferUtils#compareTo small optimization | Major | regionserver, Scanners | +| [HBASE-14104](https://issues.apache.org/jira/browse/HBASE-14104) | Add vectorportal.com to NOTICES.txt as src of our logo | Major | documentation | +| [HBASE-14102](https://issues.apache.org/jira/browse/HBASE-14102) | Add thank you to our thanks page for vectorportal.com | Major | . | +| [HBASE-12015](https://issues.apache.org/jira/browse/HBASE-12015) | Not cleaning Mob data when Mob CF is removed from table | Major | . | +| [HBASE-13993](https://issues.apache.org/jira/browse/HBASE-13993) | WALProcedureStore fencing is not effective if new WAL rolls | Major | master | +| [HBASE-13387](https://issues.apache.org/jira/browse/HBASE-13387) | Add ByteBufferedCell an extension to Cell | Major | regionserver, Scanners | +| [HBASE-13832](https://issues.apache.org/jira/browse/HBASE-13832) | Procedure V2: master fail to start due to WALProcedureStore sync failures when HDFS data nodes count is low | Blocker | master, proc-v2 | +| [HBASE-13415](https://issues.apache.org/jira/browse/HBASE-13415) | Procedure V2 - Use nonces for double submits from client | Blocker | master | +| [HBASE-14017](https://issues.apache.org/jira/browse/HBASE-14017) | Procedure v2 - MasterProcedureQueue fix concurrency issue on table queue deletion | Blocker | proc-v2 | +| [HBASE-14020](https://issues.apache.org/jira/browse/HBASE-14020) | Unsafe based optimized write in ByteBufferOutputStream | Major | Scanners | +| [HBASE-13998](https://issues.apache.org/jira/browse/HBASE-13998) | Remove CellComparator#compareRows(byte[] left, int loffset, int llength, byte[] right, int roffset, int rlength) | Major | . | +| [HBASE-13977](https://issues.apache.org/jira/browse/HBASE-13977) | Convert getKey and related APIs to Cell | Major | . | +| [HBASE-14013](https://issues.apache.org/jira/browse/HBASE-14013) | Retry when RegionServerNotYetRunningException rather than go ahead with assign so for sure we don't skip WAL replay | Major | Region Assignment | +| [HBASE-13975](https://issues.apache.org/jira/browse/HBASE-13975) | add 1.2 RM to docs | Major | documentation | +| [HBASE-13911](https://issues.apache.org/jira/browse/HBASE-13911) | add 1.2 to prereq tables in ref guide | Blocker | documentation | +| [HBASE-13990](https://issues.apache.org/jira/browse/HBASE-13990) | clean up remaining errors for maven site goal | Major | documentation | +| [HBASE-14003](https://issues.apache.org/jira/browse/HBASE-14003) | work around jdk8 spec bug in WALPerfEval | Critical | test | +| [HBASE-13939](https://issues.apache.org/jira/browse/HBASE-13939) | Make HFileReaderImpl.getFirstKeyInBlock() to return a Cell | Minor | . | +| [HBASE-13614](https://issues.apache.org/jira/browse/HBASE-13614) | Avoid temp KeyOnlyKeyValue temp objects creations in read hot path | Critical | . | +| [HBASE-12345](https://issues.apache.org/jira/browse/HBASE-12345) | Unsafe based ByteBuffer Comparator | Major | regionserver, Scanners | +| [HBASE-13922](https://issues.apache.org/jira/browse/HBASE-13922) | Do not reset mvcc in compactions for mob-enabled column | Major | mob | +| [HBASE-13968](https://issues.apache.org/jira/browse/HBASE-13968) | Remove deprecated methods from BufferedMutator class | Major | API | +| [HBASE-13973](https://issues.apache.org/jira/browse/HBASE-13973) | Update documentation for 10070 Phase 2 changes | Major | . | +| [HBASE-13967](https://issues.apache.org/jira/browse/HBASE-13967) | add jdk profiles for jdk.tools dependency | Major | . | +| [HBASE-13950](https://issues.apache.org/jira/browse/HBASE-13950) | Add a NoopProcedureStore for testing | Trivial | proc-v2 | +| [HBASE-13920](https://issues.apache.org/jira/browse/HBASE-13920) | Exclude Java files generated from protobuf from javadoc | Minor | . | +| [HBASE-13932](https://issues.apache.org/jira/browse/HBASE-13932) | Add mob integrity check in HFilePrettyPrinter | Major | mob | +| [HBASE-13898](https://issues.apache.org/jira/browse/HBASE-13898) | correct additional javadoc failures under java 8 | Minor | documentation | +| [HBASE-13728](https://issues.apache.org/jira/browse/HBASE-13728) | Remove use of Hadoop's GenericOptionsParser | Blocker | . | +| [HBASE-13448](https://issues.apache.org/jira/browse/HBASE-13448) | New Cell implementation with cached component offsets/lengths | Blocker | Scanners | +| [HBASE-13926](https://issues.apache.org/jira/browse/HBASE-13926) | Close the scanner only after Call#setResponse | Major | regionserver, Scanners | +| [HBASE-13916](https://issues.apache.org/jira/browse/HBASE-13916) | Create MultiByteBuffer an aggregation of ByteBuffers | Major | regionserver, Scanners | +| [HBASE-13470](https://issues.apache.org/jira/browse/HBASE-13470) | High level Integration test for master DDL operations | Major | master | +| [HBASE-13886](https://issues.apache.org/jira/browse/HBASE-13886) | Return empty value when the mob file is corrupt instead of throwing exceptions | Major | mob | +| [HBASE-13910](https://issues.apache.org/jira/browse/HBASE-13910) | add branch-1.2 to precommit branches | Major | build | +| [HBASE-13899](https://issues.apache.org/jira/browse/HBASE-13899) | Jacoco instrumentation fails under jdk8 | Major | build, test | +| [HBASE-13569](https://issues.apache.org/jira/browse/HBASE-13569) | correct errors reported with mvn site | Minor | documentation | +| [HBASE-13855](https://issues.apache.org/jira/browse/HBASE-13855) | Race in multi threaded PartitionedMobCompactor causes NPE | Critical | mob | +| [HBASE-13871](https://issues.apache.org/jira/browse/HBASE-13871) | Change RegionScannerImpl to deal with Cell instead of byte[], int, int | Major | regionserver, Scanners | +| [HBASE-13836](https://issues.apache.org/jira/browse/HBASE-13836) | Do not reset the mvcc for bulk loaded mob reference cells in reading | Major | mob | +| [HBASE-13451](https://issues.apache.org/jira/browse/HBASE-13451) | Make the HFileBlockIndex blockKeys to Cells so that it could be easy to use in the CellComparators | Major | . | +| [HBASE-13856](https://issues.apache.org/jira/browse/HBASE-13856) | Wrong mob metrics names in TestRegionServerMetrics | Major | mob | +| [HBASE-13806](https://issues.apache.org/jira/browse/HBASE-13806) | Check the mob files when there are mob-enabled columns in HFileCorruptionChecker | Major | mob | +| [HBASE-13827](https://issues.apache.org/jira/browse/HBASE-13827) | Delayed scanner close in KeyValueHeap and StoreScanner | Major | regionserver, Scanners | +| [HBASE-13817](https://issues.apache.org/jira/browse/HBASE-13817) | ByteBufferOuputStream - add writeInt support | Major | Scanners | +| [HBASE-13804](https://issues.apache.org/jira/browse/HBASE-13804) | Revert the changes in pom.xml | Major | mob | +| [HBASE-13803](https://issues.apache.org/jira/browse/HBASE-13803) | Disable the MobCompactionChore when the interval is not larger than 0 | Major | mob | +| [HBASE-13805](https://issues.apache.org/jira/browse/HBASE-13805) | Use LimitInputStream in hbase-common instead of ProtobufUtil.LimitedInputStream | Major | mob | +| [HBASE-13759](https://issues.apache.org/jira/browse/HBASE-13759) | Improve procedure yielding | Trivial | proc-v2 | +| [HBASE-13790](https://issues.apache.org/jira/browse/HBASE-13790) | Remove the DeleteTableHandler | Major | mob | +| [HBASE-13616](https://issues.apache.org/jira/browse/HBASE-13616) | Move ServerShutdownHandler to Pv2 | Major | proc-v2 | +| [HBASE-13476](https://issues.apache.org/jira/browse/HBASE-13476) | Procedure V2 - Add Replay Order logic for child procedures | Major | proc-v2 | +| [HBASE-13763](https://issues.apache.org/jira/browse/HBASE-13763) | Handle the rename, annotation and typo stuff in MOB | Major | mob | +| [HBASE-13754](https://issues.apache.org/jira/browse/HBASE-13754) | Allow non KeyValue Cell types also to oswrite | Major | Scanners | +| [HBASE-13393](https://issues.apache.org/jira/browse/HBASE-13393) | Optimize memstore flushing to avoid writing tag information to hfiles when no tags are present. | Major | HFile, Performance | +| [HBASE-13658](https://issues.apache.org/jira/browse/HBASE-13658) | Improve the test run time for TestAccessController class | Major | test | +| [HBASE-13762](https://issues.apache.org/jira/browse/HBASE-13762) | Use the same HFileContext with store files in mob files | Major | mob | +| [HBASE-13720](https://issues.apache.org/jira/browse/HBASE-13720) | Mob files are not encrypting in mob compaction and Sweeper | Major | regionserver, Scanners | +| [HBASE-13739](https://issues.apache.org/jira/browse/HBASE-13739) | Remove KeyValueUtil.ensureKeyValue(cell) from MOB code. | Major | mob | +| [HBASE-13641](https://issues.apache.org/jira/browse/HBASE-13641) | Deperecate Filter#filterRowKey(byte[] buffer, int offset, int length) in favor of filterRowKey(Cell firstRowCell) | Major | Filters, regionserver, Scanners | +| [HBASE-13736](https://issues.apache.org/jira/browse/HBASE-13736) | Add delay for the first execution of ExpiredMobFileCleanerChore and MobFileCompactorChore | Major | mob | +| [HBASE-13642](https://issues.apache.org/jira/browse/HBASE-13642) | Deprecate RegionObserver#postScannerFilterRow CP hook with byte[],int,int args in favor of taking Cell arg | Major | Coprocessors, regionserver, Scanners | +| [HBASE-13679](https://issues.apache.org/jira/browse/HBASE-13679) | Change ColumnTracker and SQM to deal with Cell instead of byte[], int, int | Major | regionserver, Scanners | +| [HBASE-13531](https://issues.apache.org/jira/browse/HBASE-13531) | Flakey failures of TestAcidGuarantees#testMobScanAtomicity | Major | regionserver, Scanners | +| [HBASE-13510](https://issues.apache.org/jira/browse/HBASE-13510) | Purge ByteBloomFilter | Major | . | +| [HBASE-13398](https://issues.apache.org/jira/browse/HBASE-13398) | Document HBase Quota | Major | documentation | +| [HBASE-13201](https://issues.apache.org/jira/browse/HBASE-13201) | Remove HTablePool from thrift-server | Major | . | +| [HBASE-13571](https://issues.apache.org/jira/browse/HBASE-13571) | Procedure v2 - client modify table sync (incompatible with branch-1.x) | Minor | proc-v2 | +| [HBASE-13593](https://issues.apache.org/jira/browse/HBASE-13593) | Quota support for namespace should take snapshot restore and clone into account | Major | snapshots | +| [HBASE-13620](https://issues.apache.org/jira/browse/HBASE-13620) | Bring back the removed VisibilityClient methods and mark them as deprecated. | Minor | . | +| [HBASE-13464](https://issues.apache.org/jira/browse/HBASE-13464) | Remove deprecations for 2.0.0 - Part 1 | Major | . | +| [HBASE-13501](https://issues.apache.org/jira/browse/HBASE-13501) | Deprecate/Remove getComparator() in HRegionInfo. | Major | . | +| [HBASE-13497](https://issues.apache.org/jira/browse/HBASE-13497) | Remove MVCC stamps from HFile when that is safe | Major | Scanners | +| [HBASE-13184](https://issues.apache.org/jira/browse/HBASE-13184) | Document turning off memstore for region replicas | Critical | documentation, Replication | +| [HBASE-13537](https://issues.apache.org/jira/browse/HBASE-13537) | Procedure V2 - Change the admin interface for async operations to return Future (incompatible with branch-1.x) | Major | proc-v2 | +| [HBASE-13572](https://issues.apache.org/jira/browse/HBASE-13572) | Procedure v2 - client truncate table sync (incompatible with branch-1.x) | Minor | proc-v2 | +| [HBASE-13551](https://issues.apache.org/jira/browse/HBASE-13551) | Procedure V2 - Procedure classes should not be InterfaceAudience.Public | Blocker | master | +| [HBASE-13563](https://issues.apache.org/jira/browse/HBASE-13563) | Add missing table owner to AC tests. | Minor | . | +| [HBASE-13466](https://issues.apache.org/jira/browse/HBASE-13466) | Document deprecations in 1.x - Part 1 | Major | . | +| [HBASE-13536](https://issues.apache.org/jira/browse/HBASE-13536) | Cleanup the handlers that are no longer being used. | Major | proc-v2 | +| [HBASE-13450](https://issues.apache.org/jira/browse/HBASE-13450) | Purge RawBytescomparator from the writers and readers for HBASE-10800 | Major | . | +| [HBASE-13529](https://issues.apache.org/jira/browse/HBASE-13529) | Procedure v2 - WAL Improvements | Blocker | proc-v2 | +| [HBASE-13496](https://issues.apache.org/jira/browse/HBASE-13496) | Make Bytes$LexicographicalComparerHolder$UnsafeComparer::compareTo inlineable | Major | Scanners | +| [HBASE-13502](https://issues.apache.org/jira/browse/HBASE-13502) | Deprecate/remove getRowComparator() in TableName | Major | . | +| [HBASE-13515](https://issues.apache.org/jira/browse/HBASE-13515) | Handle FileNotFoundException in region replica replay for flush/compaction events | Major | . | +| [HBASE-13514](https://issues.apache.org/jira/browse/HBASE-13514) | Fix test failures in TestScannerHeartbeatMessages caused by incorrect setting of hbase.rpc.timeout | Minor | . | +| [HBASE-13498](https://issues.apache.org/jira/browse/HBASE-13498) | Add more docs and a basic check for storage policy handling | Minor | wal | +| [HBASE-13481](https://issues.apache.org/jira/browse/HBASE-13481) | Master should respect master (old) DNS/bind related configurations | Major | . | +| [HBASE-13307](https://issues.apache.org/jira/browse/HBASE-13307) | Making methods under ScannerV2#next inlineable, faster | Major | Scanners | +| [HBASE-13455](https://issues.apache.org/jira/browse/HBASE-13455) | Procedure V2 - master truncate table | Minor | master | +| [HBASE-13290](https://issues.apache.org/jira/browse/HBASE-13290) | Procedure v2 - client enable/disable table sync | Major | Client | +| [HBASE-13211](https://issues.apache.org/jira/browse/HBASE-13211) | Procedure V2 - master Enable/Disable table | Major | master | +| [HBASE-13210](https://issues.apache.org/jira/browse/HBASE-13210) | Procedure V2 - master Modify table | Major | master | +| [HBASE-13209](https://issues.apache.org/jira/browse/HBASE-13209) | Procedure V2 - master Add/Modify/Delete Column Family | Major | master | +| [HBASE-13204](https://issues.apache.org/jira/browse/HBASE-13204) | Procedure v2 - client create/delete table sync | Minor | master | +| [HBASE-13203](https://issues.apache.org/jira/browse/HBASE-13203) | Procedure v2 - master create/delete table | Minor | master | +| [HBASE-13202](https://issues.apache.org/jira/browse/HBASE-13202) | Procedure v2 - core framework | Major | master, proc-v2 | +| [HBASE-13447](https://issues.apache.org/jira/browse/HBASE-13447) | Bypass logic in TimeRange.compare | Minor | Scanners | +| [HBASE-13313](https://issues.apache.org/jira/browse/HBASE-13313) | Skip the disabled table in mob compaction chore and MasterRpcServices | Major | regionserver, Scanners | +| [HBASE-13429](https://issues.apache.org/jira/browse/HBASE-13429) | Remove deprecated seek/reseek methods from HFileScanner | Major | regionserver, Scanners | +| [HBASE-13421](https://issues.apache.org/jira/browse/HBASE-13421) | Reduce the number of object creations introduced by HBASE-11544 in scan RPC hot code paths | Major | . | +| [HBASE-13302](https://issues.apache.org/jira/browse/HBASE-13302) | fix new javadoc warns introduced by mob. | Major | regionserver, Scanners | +| [HBASE-13277](https://issues.apache.org/jira/browse/HBASE-13277) | add mob\_threshold option to load test tool | Major | regionserver, Scanners | +| [HBASE-13252](https://issues.apache.org/jira/browse/HBASE-13252) | Get rid of managed connections and connection caching | Major | API | +| [HBASE-13335](https://issues.apache.org/jira/browse/HBASE-13335) | Update ClientSmallScanner and ClientSmallReversedScanner | Major | Client | +| [HBASE-13213](https://issues.apache.org/jira/browse/HBASE-13213) | Split out locality metrics among primary and secondary region | Major | . | +| [HBASE-13303](https://issues.apache.org/jira/browse/HBASE-13303) | Fix size calculation of results on the region server | Major | Client | +| [HBASE-13332](https://issues.apache.org/jira/browse/HBASE-13332) | Fix the usage of doAs/runAs in Visibility Controller tests. | Major | . | +| [HBASE-13327](https://issues.apache.org/jira/browse/HBASE-13327) | Use Admin in ConnectionCache | Major | . | +| [HBASE-13258](https://issues.apache.org/jira/browse/HBASE-13258) | Promote TestHRegion to LargeTests | Major | test | +| [HBASE-13006](https://issues.apache.org/jira/browse/HBASE-13006) | Document visibility label support for groups | Minor | . | +| [HBASE-13230](https://issues.apache.org/jira/browse/HBASE-13230) | [mob] reads hang when trying to read rows with large mobs (\>10MB) | Major | mob | +| [HBASE-13244](https://issues.apache.org/jira/browse/HBASE-13244) | Test delegation token generation with kerberos enabled | Major | security, test | +| [HBASE-13226](https://issues.apache.org/jira/browse/HBASE-13226) | Document enable\_table\_replication and disable\_table\_replication shell commands | Minor | documentation | +| [HBASE-13169](https://issues.apache.org/jira/browse/HBASE-13169) | ModifyTable increasing the region replica count should also auto-setup RRRE | Major | . | +| [HBASE-13121](https://issues.apache.org/jira/browse/HBASE-13121) | Async wal replication for region replicas and dist log replay does not work together | Major | . | +| [HBASE-13095](https://issues.apache.org/jira/browse/HBASE-13095) | Document how to retrieve replication stats from HBase Shell | Major | documentation, Replication | +| [HBASE-13164](https://issues.apache.org/jira/browse/HBASE-13164) | Update TestUsersOperationsWithSecureHadoop to use MiniKdc | Major | security, test | +| [HBASE-12562](https://issues.apache.org/jira/browse/HBASE-12562) | Handling memory pressure for secondary region replicas | Major | . | +| [HBASE-13151](https://issues.apache.org/jira/browse/HBASE-13151) | IllegalArgumentException in compaction when table has a namespace | Major | regionserver, Scanners | +| [HBASE-13107](https://issues.apache.org/jira/browse/HBASE-13107) | Refactor MOB Snapshot logic to reduce code duplication. | Major | mob, snapshots | +| [HBASE-13157](https://issues.apache.org/jira/browse/HBASE-13157) | Add mob compaction actions and monkeys to Chaos Monkey | Major | integration tests, mob | +| [HBASE-12332](https://issues.apache.org/jira/browse/HBASE-12332) | [mob] improve how we resolve mobfiles in reads | Major | mob | +| [HBASE-13154](https://issues.apache.org/jira/browse/HBASE-13154) | Add support for mob in TestAcidGuarantees and IntegrationTestAcidGuarantees | Major | integration tests, mob | +| [HBASE-13012](https://issues.apache.org/jira/browse/HBASE-13012) | Add shell commands to trigger the mob file compactor | Major | regionserver, Scanners | +| [HBASE-11580](https://issues.apache.org/jira/browse/HBASE-11580) | Failover handling for secondary region replicas | Major | . | +| [HBASE-13152](https://issues.apache.org/jira/browse/HBASE-13152) | NPE in ExpiredMobFileCleanerChore | Major | regionserver, Scanners | +| [HBASE-11571](https://issues.apache.org/jira/browse/HBASE-11571) | Bulk load handling from secondary region replicas | Major | . | +| [HBASE-12670](https://issues.apache.org/jira/browse/HBASE-12670) | Add unit tests that exercise the added hfilelink link mob paths | Major | regionserver, Scanners | +| [HBASE-13130](https://issues.apache.org/jira/browse/HBASE-13130) | Add timeouts on TestMasterObserver, a frequent zombie show | Major | test | +| [HBASE-13117](https://issues.apache.org/jira/browse/HBASE-13117) | improve mob sweeper javadoc | Major | mob | +| [HBASE-13067](https://issues.apache.org/jira/browse/HBASE-13067) | Fix caching of stubs to allow IP address changes of restarted remote servers | Major | . | +| [HBASE-12561](https://issues.apache.org/jira/browse/HBASE-12561) | Replicas of regions can be cached from different instances of the table in MetaCache | Major | . | +| [HBASE-12714](https://issues.apache.org/jira/browse/HBASE-12714) | RegionReplicaReplicationEndpoint should not set the RPC Codec | Major | . | +| [HBASE-11842](https://issues.apache.org/jira/browse/HBASE-11842) | Integration test for async wal replication to secondary regions | Major | . | +| [HBASE-13013](https://issues.apache.org/jira/browse/HBASE-13013) | Add read lock to ExpiredMobFileCleanerChore | Major | master | +| [HBASE-12425](https://issues.apache.org/jira/browse/HBASE-12425) | Document the phases of the split transaction | Major | documentation | +| [HBASE-11569](https://issues.apache.org/jira/browse/HBASE-11569) | Flush / Compaction handling from secondary region replicas | Major | . | +| [HBASE-11910](https://issues.apache.org/jira/browse/HBASE-11910) | Document Premptive Call Me Maybe HBase findings in the online manual | Major | . | +| [HBASE-11567](https://issues.apache.org/jira/browse/HBASE-11567) | Write bulk load COMMIT events to WAL | Major | . | +| [HBASE-11568](https://issues.apache.org/jira/browse/HBASE-11568) | Async WAL replication for region replicas | Major | . | +| [HBASE-11861](https://issues.apache.org/jira/browse/HBASE-11861) | Native MOB Compaction mechanisms. | Major | regionserver, Scanners | +| [HBASE-10942](https://issues.apache.org/jira/browse/HBASE-10942) | support parallel request cancellation for multi-get | Major | . | +| [HBASE-12936](https://issues.apache.org/jira/browse/HBASE-12936) | Quota support for namespace should take region merge into account | Major | . | +| [HBASE-11574](https://issues.apache.org/jira/browse/HBASE-11574) | hbase:meta's regions can be replicated | Major | . | +| [HBASE-11908](https://issues.apache.org/jira/browse/HBASE-11908) | Region replicas should be added to the meta table at the time of table creation | Major | . | +| [HBASE-7847](https://issues.apache.org/jira/browse/HBASE-7847) | Use zookeeper multi to clear znodes | Major | . | +| [HBASE-12669](https://issues.apache.org/jira/browse/HBASE-12669) | Have compaction scanner save info about delete markers | Major | regionserver, Scanners | +| [HBASE-8410](https://issues.apache.org/jira/browse/HBASE-8410) | Basic quota support for namespaces | Major | . | +| [HBASE-12820](https://issues.apache.org/jira/browse/HBASE-12820) | Use table lock instead of MobZookeeper | Major | regionserver, Scanners | +| [HBASE-12848](https://issues.apache.org/jira/browse/HBASE-12848) | Utilize Flash storage for WAL | Major | . | +| [HBASE-12708](https://issues.apache.org/jira/browse/HBASE-12708) | Document newly introduced params for using Thrift-over-HTTPS. | Minor | documentation, Thrift | +| [HBASE-11533](https://issues.apache.org/jira/browse/HBASE-11533) | AsciiDoctor POC | Minor | build, documentation | +| [HBASE-12695](https://issues.apache.org/jira/browse/HBASE-12695) | JDK 1.8 compilation broken | Critical | build | +| [HBASE-12331](https://issues.apache.org/jira/browse/HBASE-12331) | Shorten the mob snapshot unit tests | Major | mob | +| [HBASE-12698](https://issues.apache.org/jira/browse/HBASE-12698) | Add mob cell count to the metadata of each mob file | Major | regionserver | +| [HBASE-12758](https://issues.apache.org/jira/browse/HBASE-12758) | treat mob region as any other region when generating rs manifest. | Major | mob, snapshots | +| [HBASE-12012](https://issues.apache.org/jira/browse/HBASE-12012) | Improve cancellation for the scan RPCs | Major | . | +| [HBASE-12738](https://issues.apache.org/jira/browse/HBASE-12738) | Chunk Ref Guide into file-per-chapter | Major | documentation | +| [HBASE-12528](https://issues.apache.org/jira/browse/HBASE-12528) | Document the newly introduced params for providing principal and keytabs. | Minor | documentation | +| [HBASE-12691](https://issues.apache.org/jira/browse/HBASE-12691) | sweep job needs to exit non-zero if job fails for any reason. | Major | mob | +| [HBASE-12648](https://issues.apache.org/jira/browse/HBASE-12648) | Document per cell TTLs | Minor | documentation | +| [HBASE-12646](https://issues.apache.org/jira/browse/HBASE-12646) | SnapshotInfo tool does not find mob data in snapshots | Major | mob, snapshots | +| [HBASE-11903](https://issues.apache.org/jira/browse/HBASE-11903) | Directly invoking split & merge of replica regions should be disallowed | Major | . | +| [HBASE-12523](https://issues.apache.org/jira/browse/HBASE-12523) | Update checkstyle plugin rules to match our use | Minor | build | +| [HBASE-12591](https://issues.apache.org/jira/browse/HBASE-12591) | Ignore the count of mob compaction metrics when there is issue | Minor | regionserver | +| [HBASE-12543](https://issues.apache.org/jira/browse/HBASE-12543) | Incorrect log info in the store compaction of mob | Minor | regionserver | +| [HBASE-12487](https://issues.apache.org/jira/browse/HBASE-12487) | Explicitly flush the file name in sweep job | Major | regionserver, Scanners | +| [HBASE-12486](https://issues.apache.org/jira/browse/HBASE-12486) | Move the mob table name tag to the 2nd one | Major | regionserver, Scanners | +| [HBASE-12489](https://issues.apache.org/jira/browse/HBASE-12489) | Incorrect 'mobFileCacheMissCount' calculated in the mob metrics | Major | regionserver, Scanners | +| [HBASE-12382](https://issues.apache.org/jira/browse/HBASE-12382) | Restore incremental compilation | Major | . | +| [HBASE-12343](https://issues.apache.org/jira/browse/HBASE-12343) | Document recommended configuration for 0.98 from HBASE-11964 | Major | . | +| [HBASE-4625](https://issues.apache.org/jira/browse/HBASE-4625) | Convert @deprecated HBaseTestCase tests JUnit4 style tests | Minor | . | +| [HBASE-12392](https://issues.apache.org/jira/browse/HBASE-12392) | Incorrect implementation of CompactionRequest.isRetainDeleteMarkers | Critical | regionserver, Scanners | +| [HBASE-12391](https://issues.apache.org/jira/browse/HBASE-12391) | Correct a typo in the mob metrics | Minor | regionserver, Scanners | +| [HBASE-11683](https://issues.apache.org/jira/browse/HBASE-11683) | Metrics for MOB | Major | regionserver, Scanners | +| [HBASE-11912](https://issues.apache.org/jira/browse/HBASE-11912) | Catch some bad practices at compile time with error-prone | Major | . | +| [HBASE-11645](https://issues.apache.org/jira/browse/HBASE-11645) | Snapshot for MOB | Major | snapshots | +| [HBASE-12093](https://issues.apache.org/jira/browse/HBASE-12093) | Support the mob attributes in hbase shell when create/alter table | Major | shell | +| [HBASE-12085](https://issues.apache.org/jira/browse/HBASE-12085) | mob status should print human readable numbers. | Major | mob, UI | +| [HBASE-12080](https://issues.apache.org/jira/browse/HBASE-12080) | Shorten the run time of integration test by default when using mvn failsafe:integration-test | Major | test | +| [HBASE-12066](https://issues.apache.org/jira/browse/HBASE-12066) | Avoid major compaction in TestMobSweeper | Major | Compaction, mob | +| [HBASE-11644](https://issues.apache.org/jira/browse/HBASE-11644) | External MOB compaction tools | Major | Compaction, master | +| [HBASE-11472](https://issues.apache.org/jira/browse/HBASE-11472) | Remove ZKTableStateClientSideReader class | Major | Client, Consensus, Zookeeper | +| [HBASE-11598](https://issues.apache.org/jira/browse/HBASE-11598) | Add simple rpc throttling | Minor | . | +| [HBASE-8139](https://issues.apache.org/jira/browse/HBASE-8139) | Allow job names to be overridden | Major | mapreduce, Usability | +| [HBASE-11646](https://issues.apache.org/jira/browse/HBASE-11646) | Handle the MOB in compaction | Major | Compaction | +| [HBASE-11986](https://issues.apache.org/jira/browse/HBASE-11986) | Document MOB in Ref Guide | Major | documentation | +| [HBASE-12000](https://issues.apache.org/jira/browse/HBASE-12000) | isMob and mobThreshold do not follow column descriptor property naming conventions | Major | regionserver, Scanners | +| [HBASE-11975](https://issues.apache.org/jira/browse/HBASE-11975) | Remove the explicit list of maven repositories in pom.xml | Major | . | +| [HBASE-7767](https://issues.apache.org/jira/browse/HBASE-7767) | Get rid of ZKTable, and table enable/disable state in ZK | Major | Zookeeper | +| [HBASE-11647](https://issues.apache.org/jira/browse/HBASE-11647) | MOB integration testing | Major | Performance, test | +| [HBASE-11911](https://issues.apache.org/jira/browse/HBASE-11911) | Break up tests into more fine grained categories | Major | . | +| [HBASE-11901](https://issues.apache.org/jira/browse/HBASE-11901) | Improve the value size of the reference cell in mob column | Major | . | +| [HBASE-11786](https://issues.apache.org/jira/browse/HBASE-11786) | Document web UI for tracking time spent in coprocessors | Minor | Coprocessors, documentation | +| [HBASE-11643](https://issues.apache.org/jira/browse/HBASE-11643) | Read and write MOB in HBase | Major | regionserver, Scanners | +| [HBASE-11779](https://issues.apache.org/jira/browse/HBASE-11779) | Document the new requirement to set JAVA\_HOME before starting HBase | Major | documentation | +| [HBASE-11607](https://issues.apache.org/jira/browse/HBASE-11607) | Document HBase metrics | Major | documentation, metrics | +| [HBASE-10674](https://issues.apache.org/jira/browse/HBASE-10674) | HBCK should be updated to do replica related checks | Major | . | +| [HBASE-4624](https://issues.apache.org/jira/browse/HBASE-4624) | Remove and convert @deprecated RemoteExceptionHandler.decodeRemoteException calls | Major | . | +| [HBASE-11261](https://issues.apache.org/jira/browse/HBASE-11261) | Handle splitting/merging of regions that have region\_replication greater than one | Major | . | + + +### OTHER: + +| JIRA | Summary | Priority | Component | +|:---- |:---- | :--- |:---- | +| [HBASE-8770](https://issues.apache.org/jira/browse/HBASE-8770) | deletes and puts with the same ts should be resolved according to mvcc/seqNum | Blocker | . | +| [HBASE-20067](https://issues.apache.org/jira/browse/HBASE-20067) | Clean up findbugs warnings | Critical | . | +| [HBASE-10403](https://issues.apache.org/jira/browse/HBASE-10403) | Simplify offheap cache configuration | Minor | io | +| [HBASE-19976](https://issues.apache.org/jira/browse/HBASE-19976) | Dead lock if the worker threads in procedure executor are exhausted | Critical | . | +| [HBASE-19948](https://issues.apache.org/jira/browse/HBASE-19948) | Since HBASE-19873, HBaseClassTestRule, Small/Medium/Large has different semantic | Major | . | +| [HBASE-19296](https://issues.apache.org/jira/browse/HBASE-19296) | Fix findbugs and error-prone warnings (branch-2) | Major | . | +| [HBASE-19425](https://issues.apache.org/jira/browse/HBASE-19425) | Align the methods in Put/Delete/Increment/Append | Major | . | +| [HBASE-19627](https://issues.apache.org/jira/browse/HBASE-19627) | Stabilize the method signature for Cell and its impl | Critical | . | +| [HBASE-18429](https://issues.apache.org/jira/browse/HBASE-18429) | ITs attempt to modify immutable table/column descriptors | Critical | integration tests | +| [HBASE-18110](https://issues.apache.org/jira/browse/HBASE-18110) | [AMv2] Reenable tests temporarily disabled | Blocker | Region Assignment | +| [HBASE-18978](https://issues.apache.org/jira/browse/HBASE-18978) | Align the methods in Table and AsyncTable | Critical | asyncclient, Client | +| [HBASE-18805](https://issues.apache.org/jira/browse/HBASE-18805) | Unify Admin and AsyncAdmin | Major | . | +| [HBASE-18703](https://issues.apache.org/jira/browse/HBASE-18703) | Inconsistent behavior for preBatchMutate in doMiniBatchMutate and processRowsWithLocks | Critical | Coprocessors | +| [HBASE-18926](https://issues.apache.org/jira/browse/HBASE-18926) | Cleanup Optional\ from method params | Major | . | +| [HBASE-17143](https://issues.apache.org/jira/browse/HBASE-17143) | Scan improvement | Blocker | Client, scan | +| [HBASE-18751](https://issues.apache.org/jira/browse/HBASE-18751) | Revisit the TimeRange and TimeRangeTracker | Major | . | +| [HBASE-7320](https://issues.apache.org/jira/browse/HBASE-7320) | Remove KeyValue.getBuffer() | Blocker | . | +| [HBASE-10462](https://issues.apache.org/jira/browse/HBASE-10462) | Recategorize some of the client facing Public / Private interfaces | Blocker | Client | +| [HBASE-18696](https://issues.apache.org/jira/browse/HBASE-18696) | Fix the problems when introducing the new hbase-mapreduce module | Blocker | mapreduce | +| [HBASE-18501](https://issues.apache.org/jira/browse/HBASE-18501) | Use TableDescriptor and ColumnFamilyDescriptor as far as possible | Critical | . | +| [HBASE-18266](https://issues.apache.org/jira/browse/HBASE-18266) | Eliminate the warnings from the spotbugs | Major | . | +| [HBASE-17359](https://issues.apache.org/jira/browse/HBASE-17359) | Implement async admin | Major | Client | +| [HBASE-15086](https://issues.apache.org/jira/browse/HBASE-15086) | Fix findbugs complaint so yetus reports more green | Major | build | +| [HBASE-6581](https://issues.apache.org/jira/browse/HBASE-6581) | Build with hadoop.profile=3.0 | Major | . | +| [HBASE-16617](https://issues.apache.org/jira/browse/HBASE-16617) | Procedure V2 - Improvements | Minor | master, proc-v2 | +| [HBASE-16833](https://issues.apache.org/jira/browse/HBASE-16833) | Implement asynchronous hbase client based on HBASE-15921 | Major | Client | +| [HBASE-18037](https://issues.apache.org/jira/browse/HBASE-18037) | Do not expose implementation classes to CP | Blocker | Coprocessors | +| [HBASE-15179](https://issues.apache.org/jira/browse/HBASE-15179) | Cell/DBB end-to-end on the write-path | Major | regionserver | +| [HBASE-16145](https://issues.apache.org/jira/browse/HBASE-16145) | MultiRowRangeFilter constructor shouldn't throw IOException | Minor | . | +| [HBASE-16567](https://issues.apache.org/jira/browse/HBASE-16567) | Upgrade to protobuf-3.1.x | Critical | Protobufs | +| [HBASE-11871](https://issues.apache.org/jira/browse/HBASE-11871) | Avoid usage of KeyValueUtil#ensureKeyValue | Major | regionserver | +| [HBASE-16432](https://issues.apache.org/jira/browse/HBASE-16432) | Revisit the asynchronous ipc implementation | Major | rpc | +| [HBASE-14460](https://issues.apache.org/jira/browse/HBASE-14460) | [Perf Regression] Merge of MVCC and SequenceId (HBASE-8763) slowed Increments, CheckAndPuts, batch operations | Critical | Performance | +| [HBASE-11425](https://issues.apache.org/jira/browse/HBASE-11425) | Cell/DBB end-to-end on the read-path | Major | regionserver, Scanners | +| [HBASE-14457](https://issues.apache.org/jira/browse/HBASE-14457) | Umbrella: Improve Multiple WAL for production usage | Major | . | +| [HBASE-14420](https://issues.apache.org/jira/browse/HBASE-14420) | Zombie Stomping Session | Critical | test | +| [HBASE-14869](https://issues.apache.org/jira/browse/HBASE-14869) | Better request latency and size histograms | Major | . | +| [HBASE-11339](https://issues.apache.org/jira/browse/HBASE-11339) | HBase MOB | Major | regionserver, Scanners | +| [HBASE-13747](https://issues.apache.org/jira/browse/HBASE-13747) | Promote Java 8 to "yes" in support matrix | Critical | java | +| [HBASE-7781](https://issues.apache.org/jira/browse/HBASE-7781) | Update security unit tests to use a KDC if available | Blocker | security, test | +| [HBASE-12859](https://issues.apache.org/jira/browse/HBASE-12859) | New master API to track major compaction completion | Major | . | +| [HBASE-18792](https://issues.apache.org/jira/browse/HBASE-18792) | hbase-2 needs to defend against hbck operations | Blocker | hbck | +| [HBASE-19963](https://issues.apache.org/jira/browse/HBASE-19963) | TestFSHDFSUtils assumes wrong default port for Hadoop 3.0.1+ | Major | test | +| [HBASE-20386](https://issues.apache.org/jira/browse/HBASE-20386) | [DOC] Align WALPlayer help text and refguide | Minor | documentation | +| [HBASE-20365](https://issues.apache.org/jira/browse/HBASE-20365) | start branch-2.0 specific website section | Critical | documentation, website | +| [HBASE-14175](https://issues.apache.org/jira/browse/HBASE-14175) | Adopt releasedocmaker for better generated release notes | Critical | . | +| [HBASE-14348](https://issues.apache.org/jira/browse/HBASE-14348) | Update download mirror link | Major | documentation, website | +| [HBASE-20299](https://issues.apache.org/jira/browse/HBASE-20299) | Update MOB in hbase refguide | Minor | mob | +| [HBASE-20132](https://issues.apache.org/jira/browse/HBASE-20132) | Change the "KV" to "Cell" for web UI | Minor | . | +| [HBASE-20199](https://issues.apache.org/jira/browse/HBASE-20199) | Add test to prevent further permission regression around table flush and snapshot | Critical | test | +| [HBASE-20223](https://issues.apache.org/jira/browse/HBASE-20223) | Use hbase-thirdparty 2.1.0 | Blocker | dependencies | +| [HBASE-19158](https://issues.apache.org/jira/browse/HBASE-19158) | Ref guide needs upgrade update | Blocker | documentation | +| [HBASE-20212](https://issues.apache.org/jira/browse/HBASE-20212) | Make all Public classes have InterfaceAudience category | Critical | Usability | +| [HBASE-20246](https://issues.apache.org/jira/browse/HBASE-20246) | Remove the spark module | Blocker | . | +| [HBASE-19552](https://issues.apache.org/jira/browse/HBASE-19552) | update hbase to use new thirdparty libs | Major | dependencies, thirdparty | +| [HBASE-20171](https://issues.apache.org/jira/browse/HBASE-20171) | Remove o.a.h.h.ProcedureState | Minor | . | +| [HBASE-15151](https://issues.apache.org/jira/browse/HBASE-15151) | Rely on nightly tests for findbugs compliance on existing branch | Critical | build, test | +| [HBASE-20075](https://issues.apache.org/jira/browse/HBASE-20075) | remove logic for branch-1.1 nightly testing | Minor | test | +| [HBASE-20072](https://issues.apache.org/jira/browse/HBASE-20072) | remove 1.1 release line from the prerequisite tables | Major | community, documentation | +| [HBASE-18882](https://issues.apache.org/jira/browse/HBASE-18882) | [TEST] Run MR branch-1 jobs against hbase2 cluster | Critical | mapreduce, test | +| [HBASE-20093](https://issues.apache.org/jira/browse/HBASE-20093) | Replace ServerLoad by ServerMetrics for ServerManager | Major | . | +| [HBASE-20097](https://issues.apache.org/jira/browse/HBASE-20097) | Merge TableDescriptors#getAll and TableDescriptors#getAllDescriptors into one | Minor | . | +| [HBASE-20084](https://issues.apache.org/jira/browse/HBASE-20084) | Refactor the RSRpcServices#doBatchOp | Minor | regionserver | +| [HBASE-20092](https://issues.apache.org/jira/browse/HBASE-20092) | Fix TestRegionMetrics#testRegionMetrics | Minor | test | +| [HBASE-20088](https://issues.apache.org/jira/browse/HBASE-20088) | Update copyright notices to year 2018 | Minor | . | +| [HBASE-20089](https://issues.apache.org/jira/browse/HBASE-20089) | make\_rc.sh should name SHA-512 checksum files with the extension .sha512 | Minor | . | +| [HBASE-18596](https://issues.apache.org/jira/browse/HBASE-18596) | [TEST] A hbase1 cluster should be able to replicate to a hbase2 cluster; verify | Blocker | . | +| [HBASE-19947](https://issues.apache.org/jira/browse/HBASE-19947) | MR jobs using ITU use wrong filesystem | Critical | integration tests | +| [HBASE-19946](https://issues.apache.org/jira/browse/HBASE-19946) | TestPerColumnFamilyFlush and TestWalAndCompactingMemStoreFlush fail against h3 | Major | test | +| [HBASE-19922](https://issues.apache.org/jira/browse/HBASE-19922) | ProtobufUtils::PRIMITIVES is unused | Major | Protobufs | +| [HBASE-19720](https://issues.apache.org/jira/browse/HBASE-19720) | Rename WALKey#getTabnename to WALKey#getTableName | Major | . | +| [HBASE-15042](https://issues.apache.org/jira/browse/HBASE-15042) | refactor so that site materials are in the Standard Maven Place | Minor | build, website | +| [HBASE-19596](https://issues.apache.org/jira/browse/HBASE-19596) | RegionMetrics/ServerMetrics/ClusterMetrics should apply to all public classes | Critical | Client | +| [HBASE-19620](https://issues.apache.org/jira/browse/HBASE-19620) | Add UT to confirm the race in MasterRpcServices.getProcedureResult | Minor | proc-v2, test | +| [HBASE-19652](https://issues.apache.org/jira/browse/HBASE-19652) | Turn down CleanerChore logging; too chatty | Major | . | +| [HBASE-19644](https://issues.apache.org/jira/browse/HBASE-19644) | add the checkstyle rule to reject the illegal imports | Major | . | +| [HBASE-19637](https://issues.apache.org/jira/browse/HBASE-19637) | Add .checkstyle to gitignore | Major | build | +| [HBASE-19550](https://issues.apache.org/jira/browse/HBASE-19550) | Wrap the cell passed via Mutation#add(Cell) to be of ExtendedCell | Major | . | +| [HBASE-18970](https://issues.apache.org/jira/browse/HBASE-18970) | The version of jruby we use now can't get interactive input from prompt | Critical | shell | +| [HBASE-19548](https://issues.apache.org/jira/browse/HBASE-19548) | Backport the missed doc fix from master to branch-2 | Major | . | +| [HBASE-19526](https://issues.apache.org/jira/browse/HBASE-19526) | Update hadoop version to 3.0 GA | Major | build, dependencies | +| [HBASE-19477](https://issues.apache.org/jira/browse/HBASE-19477) | Move and align documentation in hbase-annotations | Trivial | . | +| [HBASE-19267](https://issues.apache.org/jira/browse/HBASE-19267) | Eclipse project import issues on 2.0 | Major | build | +| [HBASE-19512](https://issues.apache.org/jira/browse/HBASE-19512) | Move EventType and ExecutorType from hbase-client to hbase-server | Major | regionserver | +| [HBASE-19485](https://issues.apache.org/jira/browse/HBASE-19485) | Minor improvement to TestCompactedHFilesDischarger | Trivial | . | +| [HBASE-18988](https://issues.apache.org/jira/browse/HBASE-18988) | Add release managers to reference guide | Trivial | documentation | +| [HBASE-19410](https://issues.apache.org/jira/browse/HBASE-19410) | Move zookeeper related UTs to hbase-zookeeper and mark them as ZKTests | Major | test, Zookeeper | +| [HBASE-19323](https://issues.apache.org/jira/browse/HBASE-19323) | Make netty engine default in hbase2 | Major | rpc | +| [HBASE-19416](https://issues.apache.org/jira/browse/HBASE-19416) | Document dynamic configurations currently support | Minor | documentation | +| [HBASE-19298](https://issues.apache.org/jira/browse/HBASE-19298) | CellScanner and CellScannable should be declared as IA.Public | Major | . | +| [HBASE-19408](https://issues.apache.org/jira/browse/HBASE-19408) | Remove WALActionsListener.Base | Trivial | . | +| [HBASE-19407](https://issues.apache.org/jira/browse/HBASE-19407) | [branch-2] Remove backup/restore | Blocker | . | +| [HBASE-19328](https://issues.apache.org/jira/browse/HBASE-19328) | Remove asked if splittable log messages | Minor | proc-v2 | +| [HBASE-19200](https://issues.apache.org/jira/browse/HBASE-19200) | make hbase-client only depend on ZKAsyncRegistry and ZNodePaths | Major | Client, Zookeeper | +| [HBASE-19123](https://issues.apache.org/jira/browse/HBASE-19123) | Purge 'complete' support from Coprocesor Observers | Major | Coprocessors | +| [HBASE-19241](https://issues.apache.org/jira/browse/HBASE-19241) | Improve javadoc for AsyncAdmin and cleanup warnings for the implementation classes | Major | documentation | +| [HBASE-14350](https://issues.apache.org/jira/browse/HBASE-14350) | Procedure V2 Phase 2: Assignment Manager | Blocker | master, proc-v2 | +| [HBASE-19224](https://issues.apache.org/jira/browse/HBASE-19224) | LICENSE failure for Hadoop 3.1 on dnsjava | Major | build | +| [HBASE-18817](https://issues.apache.org/jira/browse/HBASE-18817) | Pull hbase-spark module out of branch-2 | Blocker | spark | +| [HBASE-19217](https://issues.apache.org/jira/browse/HBASE-19217) | Update supplemental-models.xml for jetty-sslengine | Major | . | +| [HBASE-19179](https://issues.apache.org/jira/browse/HBASE-19179) | Remove hbase-prefix-tree | Critical | . | +| [HBASE-19176](https://issues.apache.org/jira/browse/HBASE-19176) | Remove hbase-native-client from branch-2 | Major | . | +| [HBASE-19097](https://issues.apache.org/jira/browse/HBASE-19097) | update testing to use Apache Yetus Test Patch version 0.6.0 | Major | build | +| [HBASE-19049](https://issues.apache.org/jira/browse/HBASE-19049) | Update kerby to 1.0.1 GA release | Major | dependencies | +| [HBASE-16338](https://issues.apache.org/jira/browse/HBASE-16338) | update jackson to 2.y | Major | dependencies | +| [HBASE-19007](https://issues.apache.org/jira/browse/HBASE-19007) | Align Services Interfaces in Master and RegionServer | Blocker | . | +| [HBASE-19043](https://issues.apache.org/jira/browse/HBASE-19043) | Purge TableWrapper and CoprocessorHConnnection | Major | Coprocessors | +| [HBASE-18991](https://issues.apache.org/jira/browse/HBASE-18991) | Remove RegionMergeRequest | Trivial | . | +| [HBASE-18927](https://issues.apache.org/jira/browse/HBASE-18927) | Add the DataType which is subset of KeyValue#Type to CellBuilder for building cell | Major | . | +| [HBASE-18833](https://issues.apache.org/jira/browse/HBASE-18833) | Ensure precommit personality is up to date on all active branches | Critical | test | +| [HBASE-10504](https://issues.apache.org/jira/browse/HBASE-10504) | Define Replication Interface | Blocker | Replication | +| [HBASE-18767](https://issues.apache.org/jira/browse/HBASE-18767) | Release hbase-2.0.0-alpha-3; Theme "Scrubbed API" | Major | . | +| [HBASE-18835](https://issues.apache.org/jira/browse/HBASE-18835) | The return type of ExtendedCell#deepClone should be ExtendedCell rather than Cell | Major | . | +| [HBASE-18766](https://issues.apache.org/jira/browse/HBASE-18766) | Make TableSnapshotScanner Audience Private | Major | . | +| [HBASE-18782](https://issues.apache.org/jira/browse/HBASE-18782) | Module untangling work | Major | . | +| [HBASE-18421](https://issues.apache.org/jira/browse/HBASE-18421) | update hadoop prerequisites docs to call out 2.8.1 | Major | community, dependencies, documentation | +| [HBASE-13868](https://issues.apache.org/jira/browse/HBASE-13868) | Correct "Disable automatic splitting" section in HBase book | Trivial | documentation | +| [HBASE-17972](https://issues.apache.org/jira/browse/HBASE-17972) | Remove mergePool from CompactSplitThread | Minor | regionserver | +| [HBASE-18768](https://issues.apache.org/jira/browse/HBASE-18768) | Move TestTableName to hbase-common from hbase-server | Major | . | +| [HBASE-17967](https://issues.apache.org/jira/browse/HBASE-17967) | clean up documentation references to -ROOT- table. | Minor | documentation | +| [HBASE-18710](https://issues.apache.org/jira/browse/HBASE-18710) | Move on to hbase-thirdparty 1.0.1 (it was just released). | Major | hbase-thirdparty | +| [HBASE-18705](https://issues.apache.org/jira/browse/HBASE-18705) | bin/hbase does not find cached\_classpath.txt | Major | . | +| [HBASE-18611](https://issues.apache.org/jira/browse/HBASE-18611) | Copy all tests from o.a.h.h.p.TestProtobufUtil to o.a.h.h.s.p.TestProtobufUtil | Minor | Protobufs, test | +| [HBASE-18670](https://issues.apache.org/jira/browse/HBASE-18670) | Add .DS\_Store to .gitignore | Minor | community | +| [HBASE-17614](https://issues.apache.org/jira/browse/HBASE-17614) | Move Backup/Restore into separate module | Blocker | . | +| [HBASE-18660](https://issues.apache.org/jira/browse/HBASE-18660) | Remove duplicate code from the checkAndPut method in HTable | Trivial | . | +| [HBASE-18653](https://issues.apache.org/jira/browse/HBASE-18653) | Undo hbase2 check against \< hadoop2.6.x; i.e. implement agreed drop of hadoop 2.4 and 2.5 support in hbase2 | Major | build | +| [HBASE-18630](https://issues.apache.org/jira/browse/HBASE-18630) | Prune dependencies; as is branch-2 has duplicates | Major | dependencies | +| [HBASE-18594](https://issues.apache.org/jira/browse/HBASE-18594) | Release hbase-2.0.0-alpha2 | Major | . | +| [HBASE-18623](https://issues.apache.org/jira/browse/HBASE-18623) | Frequent failed to parse at EOF warnings from WALEntryStream | Minor | . | +| [HBASE-18518](https://issues.apache.org/jira/browse/HBASE-18518) | Remove jersey1\* dependencies from project and jersey1\* jars from lib dir | Major | dependencies, pom, REST | +| [HBASE-18544](https://issues.apache.org/jira/browse/HBASE-18544) | Move the HRegion#addRegionToMETA to TestDefaultMemStore | Minor | regionserver | +| [HBASE-18582](https://issues.apache.org/jira/browse/HBASE-18582) | Correct the docs for Mutation#setCellVisibility | Minor | documentation | +| [HBASE-18588](https://issues.apache.org/jira/browse/HBASE-18588) | Verify we're using netty .so epolling on linux post HBASE-18271 | Major | test | +| [HBASE-18514](https://issues.apache.org/jira/browse/HBASE-18514) | Backport space quota "phase2" work to branch-2 | Blocker | . | +| [HBASE-18527](https://issues.apache.org/jira/browse/HBASE-18527) | update nightly builds to compensate for jenkins plugin upgrades | Blocker | community, test | +| [HBASE-18515](https://issues.apache.org/jira/browse/HBASE-18515) | Introduce Delete.add as a replacement for Delete#addDeleteMarker | Major | Client | +| [HBASE-16100](https://issues.apache.org/jira/browse/HBASE-16100) | Procedure V2 - Tools | Minor | proc-v2, tooling | +| [HBASE-15141](https://issues.apache.org/jira/browse/HBASE-15141) | Procedure V2 - Web UI | Blocker | proc-v2, UI | +| [HBASE-18465](https://issues.apache.org/jira/browse/HBASE-18465) | [AMv2] remove old split region code that is no longer needed | Major | Admin, rpc | +| [HBASE-16728](https://issues.apache.org/jira/browse/HBASE-16728) | Add hadoop.profile=3.0 pass to precommit checks. | Major | build, hadoop3 | +| [HBASE-18384](https://issues.apache.org/jira/browse/HBASE-18384) | Add link to refguide schema section on apache blog on hbase application archetypes | Minor | documentation | +| [HBASE-18344](https://issues.apache.org/jira/browse/HBASE-18344) | Introduce Append.addColumn as a replacement for Append.add | Trivial | . | +| [HBASE-18364](https://issues.apache.org/jira/browse/HBASE-18364) | Downgrade surefire | Major | . | +| [HBASE-18291](https://issues.apache.org/jira/browse/HBASE-18291) | Regenerate thrift2 python examples | Minor | . | +| [HBASE-18288](https://issues.apache.org/jira/browse/HBASE-18288) | Declared dependency on specific javax.ws.rs | Major | dependencies, REST | +| [HBASE-18284](https://issues.apache.org/jira/browse/HBASE-18284) | Update hbasecon asia logo on home page of hbase.apache.org | Major | . | +| [HBASE-12794](https://issues.apache.org/jira/browse/HBASE-12794) | Guidelines for filing JIRA issues | Major | documentation | +| [HBASE-18258](https://issues.apache.org/jira/browse/HBASE-18258) | Take down hbasecon2017 logo from hbase.apache.org and put up hbaseconasia2017 instead. | Major | . | +| [HBASE-17954](https://issues.apache.org/jira/browse/HBASE-17954) | Switch findbugs implementation to spotbugs | Major | build, community, test | +| [HBASE-17898](https://issues.apache.org/jira/browse/HBASE-17898) | Update dependencies | Critical | . | +| [HBASE-18187](https://issues.apache.org/jira/browse/HBASE-18187) | Release hbase-2.0.0-alpha1 | Major | . | +| [HBASE-18096](https://issues.apache.org/jira/browse/HBASE-18096) | Limit HFileUtil visibility and add missing annotations | Trivial | . | +| [HBASE-13074](https://issues.apache.org/jira/browse/HBASE-13074) | Cleaned up usage of hbase.master.lease.thread.wakefrequency | Trivial | wal | +| [HBASE-17968](https://issues.apache.org/jira/browse/HBASE-17968) | Update copyright year in NOTICE file | Trivial | build | +| [HBASE-17965](https://issues.apache.org/jira/browse/HBASE-17965) | Canary tool should print the regionserver name on failure | Minor | . | +| [HBASE-17828](https://issues.apache.org/jira/browse/HBASE-17828) | Revisit the IS annotation and the documentation | Critical | API | +| [HBASE-16215](https://issues.apache.org/jira/browse/HBASE-16215) | clean up references for EOM release lines | Major | community, website | +| [HBASE-17847](https://issues.apache.org/jira/browse/HBASE-17847) | update documentation to include positions on recent Hadoop releases | Critical | community, documentation | +| [HBASE-17834](https://issues.apache.org/jira/browse/HBASE-17834) | close stale github PRs | Minor | community | +| [HBASE-17802](https://issues.apache.org/jira/browse/HBASE-17802) | Add note that minor versions can add methods to Interfaces | Major | documentation | +| [HBASE-17782](https://issues.apache.org/jira/browse/HBASE-17782) | Extend IdReadWriteLock to support using both weak and soft reference | Major | . | +| [HBASE-17618](https://issues.apache.org/jira/browse/HBASE-17618) | Refactor the implementation of modify table and delete column in MOB | Major | mob | +| [HBASE-17609](https://issues.apache.org/jira/browse/HBASE-17609) | Allow for region merging in the UI | Major | . | +| [HBASE-16812](https://issues.apache.org/jira/browse/HBASE-16812) | Clean up the locks in MOB | Minor | mob | +| [HBASE-17502](https://issues.apache.org/jira/browse/HBASE-17502) | Document hadoop pre-2.6.1 and Java 1.8 Kerberos problem in our hadoop support matrix | Major | . | +| [HBASE-16710](https://issues.apache.org/jira/browse/HBASE-16710) | Add ZStandard Codec to Compression.java | Minor | . | +| [HBASE-17401](https://issues.apache.org/jira/browse/HBASE-17401) | Remove unnecessary semicolons in hbase-annotations | Trivial | . | +| [HBASE-17397](https://issues.apache.org/jira/browse/HBASE-17397) | AggregationClient cleanup | Minor | . | +| [HBASE-16869](https://issues.apache.org/jira/browse/HBASE-16869) | Typo in "Disabling Blockcache" doc | Trivial | documentation | +| [HBASE-17272](https://issues.apache.org/jira/browse/HBASE-17272) | Doc how to run Standalone HBase over an HDFS instance; all daemons in one JVM but persisting to an HDFS instance | Major | documentation | +| [HBASE-17121](https://issues.apache.org/jira/browse/HBASE-17121) | Undo the building of xref as part of site build | Major | . | +| [HBASE-16335](https://issues.apache.org/jira/browse/HBASE-16335) | update to latest apache parent pom | Major | build, dependencies | +| [HBASE-17046](https://issues.apache.org/jira/browse/HBASE-17046) | Add 1.1 doc to hbase.apache.org | Major | website | +| [HBASE-16955](https://issues.apache.org/jira/browse/HBASE-16955) | Fixup precommit protoc check to do new distributed protos and pb 3.1.0 build | Major | build, Protobufs | +| [HBASE-16413](https://issues.apache.org/jira/browse/HBASE-16413) | Add apache-hbase.slack.com #users channel to ref guide | Minor | documentation | +| [HBASE-16952](https://issues.apache.org/jira/browse/HBASE-16952) | Replace hadoop-maven-plugins with protobuf-maven-plugin for building protos | Major | build | +| [HBASE-16811](https://issues.apache.org/jira/browse/HBASE-16811) | Remove mob sweep job | Minor | . | +| [HBASE-16591](https://issues.apache.org/jira/browse/HBASE-16591) | Add a docker file only contains java 8 for running pre commit on master | Blocker | build | +| [HBASE-16518](https://issues.apache.org/jira/browse/HBASE-16518) | Remove old .arcconfig file | Trivial | tooling | +| [HBASE-16376](https://issues.apache.org/jira/browse/HBASE-16376) | Document implicit side-effects on partial results when calling Scan#setBatch(int) | Minor | API, documentation | +| [HBASE-16467](https://issues.apache.org/jira/browse/HBASE-16467) | Move AbstractHBaseTool to hbase-common | Trivial | . | +| [HBASE-16260](https://issues.apache.org/jira/browse/HBASE-16260) | Audit dependencies for Category-X | Critical | community, dependencies | +| [HBASE-16426](https://issues.apache.org/jira/browse/HBASE-16426) | Remove company affiliations from committer list | Major | documentation, website | +| [HBASE-16354](https://issues.apache.org/jira/browse/HBASE-16354) | Clean up defunct GitHub PRs | Major | community | +| [HBASE-15656](https://issues.apache.org/jira/browse/HBASE-15656) | Fix unused protobuf warning in Admin.proto | Minor | . | +| [HBASE-16073](https://issues.apache.org/jira/browse/HBASE-16073) | update compatibility\_checker for jacc dropping comma sep args | Critical | build, documentation | +| [HBASE-15989](https://issues.apache.org/jira/browse/HBASE-15989) | Remove hbase.online.schema.update.enable | Major | . | +| [HBASE-15888](https://issues.apache.org/jira/browse/HBASE-15888) | Extend HBASE-12769 for bulk load data replication | Major | Replication | +| [HBASE-15895](https://issues.apache.org/jira/browse/HBASE-15895) | remove unmaintained jenkins build analysis tool. | Minor | build | +| [HBASE-14635](https://issues.apache.org/jira/browse/HBASE-14635) | Fix flaky test TestSnapshotCloneIndependence | Major | test | +| [HBASE-4368](https://issues.apache.org/jira/browse/HBASE-4368) | Expose processlist in shell (per regionserver and perhaps by cluster) | Major | shell | +| [HBASE-15646](https://issues.apache.org/jira/browse/HBASE-15646) | Add some docs about exporting and importing snapshots using S3 | Major | documentation, snapshots | +| [HBASE-15729](https://issues.apache.org/jira/browse/HBASE-15729) | Remove old JDiff wrapper scripts in dev-support | Minor | build, community | +| [HBASE-15644](https://issues.apache.org/jira/browse/HBASE-15644) | Add maven-scala-plugin for scaladoc | Major | build | +| [HBASE-15494](https://issues.apache.org/jira/browse/HBASE-15494) | Close obviated PRs on github | Major | community | +| [HBASE-14678](https://issues.apache.org/jira/browse/HBASE-14678) | Experiment: Temporarily disable balancer and a few others to see if root of crashed/timedout JVMs | Critical | test | +| [HBASE-15502](https://issues.apache.org/jira/browse/HBASE-15502) | Skeleton unit test to copy/paste | Major | documentation | +| [HBASE-15220](https://issues.apache.org/jira/browse/HBASE-15220) | Change two logs in SimpleRegionNormalizer to INFO level | Minor | . | +| [HBASE-15017](https://issues.apache.org/jira/browse/HBASE-15017) | Close out GitHub pull requests that aren't likely to update into a usable patch | Trivial | community | +| [HBASE-14526](https://issues.apache.org/jira/browse/HBASE-14526) | Remove delayed rpc | Major | . | +| [HBASE-15099](https://issues.apache.org/jira/browse/HBASE-15099) | Move RegionStateListener class out of quotas package | Minor | . | +| [HBASE-15007](https://issues.apache.org/jira/browse/HBASE-15007) | update Hadoop support matrix to list 2.6.1+ as supported | Major | documentation, Operability | +| [HBASE-15003](https://issues.apache.org/jira/browse/HBASE-15003) | Remove BoundedConcurrentLinkedQueue and associated test | Minor | util | +| [HBASE-11985](https://issues.apache.org/jira/browse/HBASE-11985) | Document sizing rules of thumb | Major | documentation | +| [HBASE-14994](https://issues.apache.org/jira/browse/HBASE-14994) | Clean up some broken links and references to old APIs | Major | documentation | +| [HBASE-14534](https://issues.apache.org/jira/browse/HBASE-14534) | Bump yammer/coda/dropwizard metrics dependency version | Minor | . | +| [HBASE-14851](https://issues.apache.org/jira/browse/HBASE-14851) | Add test showing how to use TTL from thrift | Major | test, Thrift | +| [HBASE-14516](https://issues.apache.org/jira/browse/HBASE-14516) | categorize hadoop-compat tests | Critical | build, hadoop2, test | +| [HBASE-14308](https://issues.apache.org/jira/browse/HBASE-14308) | HTableDescriptor WARN is not actionable | Minor | Usability | +| [HBASE-14732](https://issues.apache.org/jira/browse/HBASE-14732) | Update HBase website skin and CSS | Major | documentation | +| [HBASE-14764](https://issues.apache.org/jira/browse/HBASE-14764) | Stop using post-site target | Major | documentation | +| [HBASE-14713](https://issues.apache.org/jira/browse/HBASE-14713) | Remove simple deprecated-since-1.0 code in hbase-server from hbase 2.0 | Major | . | +| [HBASE-14762](https://issues.apache.org/jira/browse/HBASE-14762) | Update docs about publishing website to show gitsubpub method instead of svnsubpub | Critical | documentation | +| [HBASE-14481](https://issues.apache.org/jira/browse/HBASE-14481) | Decommission HBase wiki | Blocker | documentation | +| [HBASE-11720](https://issues.apache.org/jira/browse/HBASE-11720) | Set up jenkins job to build site documentation | Minor | build, documentation | +| [HBASE-14026](https://issues.apache.org/jira/browse/HBASE-14026) | Clarify "Web API" in version and compatibility docs | Critical | documentation | +| [HBASE-13867](https://issues.apache.org/jira/browse/HBASE-13867) | Add endpoint coprocessor guide to HBase book | Major | Coprocessors, documentation | +| [HBASE-14652](https://issues.apache.org/jira/browse/HBASE-14652) | Improve / update publish-website script in dev-support | Major | scripts | +| [HBASE-14493](https://issues.apache.org/jira/browse/HBASE-14493) | Upgrade the jamon-runtime dependency | Minor | . | +| [HBASE-14502](https://issues.apache.org/jira/browse/HBASE-14502) | Purge use of jmock and remove as dependency | Major | test | +| [HBASE-14271](https://issues.apache.org/jira/browse/HBASE-14271) | Improve Nexus staging instructions | Minor | build, documentation | +| [HBASE-14424](https://issues.apache.org/jira/browse/HBASE-14424) | Document that DisabledRegionSplitPolicy blocks manual splits | Minor | documentation | +| [HBASE-14482](https://issues.apache.org/jira/browse/HBASE-14482) | Add hadoop 2.6.1 to the test-patch build list | Minor | build | +| [HBASE-14227](https://issues.apache.org/jira/browse/HBASE-14227) | Fold special cased MOB APIs into existing APIs | Blocker | mob | +| [HBASE-14361](https://issues.apache.org/jira/browse/HBASE-14361) | ReplicationSink should create Connection instances lazily | Major | Replication | +| [HBASE-14253](https://issues.apache.org/jira/browse/HBASE-14253) | update docs + build for maven 3.0.4+ | Major | build, documentation | +| [HBASE-14318](https://issues.apache.org/jira/browse/HBASE-14318) | make\_rc.sh should purge/re-resolve dependencies from local repository | Major | build | +| [HBASE-14290](https://issues.apache.org/jira/browse/HBASE-14290) | Spin up less threads in tests | Major | test | +| [HBASE-14091](https://issues.apache.org/jira/browse/HBASE-14091) | Update site documentation with code of conduct and project policy for transgressions | Major | documentation, website | +| [HBASE-14288](https://issues.apache.org/jira/browse/HBASE-14288) | Upgrade asciidoctor plugin to v1.5.2.1 | Minor | build | +| [HBASE-14085](https://issues.apache.org/jira/browse/HBASE-14085) | Correct LICENSE and NOTICE files in artifacts | Blocker | build | +| [HBASE-13089](https://issues.apache.org/jira/browse/HBASE-13089) | Fix test compilation error on building against htrace-3.2.0-incubating | Minor | . | +| [HBASE-14081](https://issues.apache.org/jira/browse/HBASE-14081) | (outdated) references to SVN/trunk in documentation | Minor | documentation, website | +| [HBASE-14071](https://issues.apache.org/jira/browse/HBASE-14071) | Document troubleshooting unexpected filesystem usage by snapshots and WALs | Major | . | +| [HBASE-13446](https://issues.apache.org/jira/browse/HBASE-13446) | Add docs warning about missing data for downstream on versions prior to HBASE-13262 | Critical | documentation | +| [HBASE-14057](https://issues.apache.org/jira/browse/HBASE-14057) | HBase shell user\_permission should list super users defined on hbase-site.xml | Minor | shell | +| [HBASE-11276](https://issues.apache.org/jira/browse/HBASE-11276) | Add back support for running ChaosMonkey as standalone tool | Minor | . | +| [HBASE-14052](https://issues.apache.org/jira/browse/HBASE-14052) | Mark a few methods in CellUtil audience private since only make sense internally to hbase | Trivial | API | +| [HBASE-14053](https://issues.apache.org/jira/browse/HBASE-14053) | Disable DLR in branch-1+ | Major | Recovery | +| [HBASE-13869](https://issues.apache.org/jira/browse/HBASE-13869) | Fix typo in HBase book | Trivial | documentation | +| [HBASE-13964](https://issues.apache.org/jira/browse/HBASE-13964) | Skip region normalization for tables under namespace quota | Major | Balancer, Usability | +| [HBASE-13948](https://issues.apache.org/jira/browse/HBASE-13948) | Expand hadoop2 versions built on the pre-commit | Major | build | +| [HBASE-13956](https://issues.apache.org/jira/browse/HBASE-13956) | Add myself as 1.1 release manager | Trivial | website | +| [HBASE-13915](https://issues.apache.org/jira/browse/HBASE-13915) | Remove EOL HBase versions from java and hadoop prereq tables | Major | documentation | +| [HBASE-13929](https://issues.apache.org/jira/browse/HBASE-13929) | make\_rc.sh publishes empty shaded artifacts | Minor | build | +| [HBASE-13666](https://issues.apache.org/jira/browse/HBASE-13666) | book.pdf is not renamed during site build | Major | website | +| [HBASE-13660](https://issues.apache.org/jira/browse/HBASE-13660) | Add link to cloud bigtable schema modeling guide into our refguide | Major | documentation | +| [HBASE-13799](https://issues.apache.org/jira/browse/HBASE-13799) | javadoc how Scan gets polluted when used; if you set attributes or ask for scan metrics | Minor | documentation | +| [HBASE-13726](https://issues.apache.org/jira/browse/HBASE-13726) | stop using Hadoop's IOUtils | Major | dependencies | +| [HBASE-13716](https://issues.apache.org/jira/browse/HBASE-13716) | Stop using Hadoop's FSConstants | Blocker | Filesystem Integration | +| [HBASE-13582](https://issues.apache.org/jira/browse/HBASE-13582) | Update docs for HTrace | Minor | documentation | +| [HBASE-13713](https://issues.apache.org/jira/browse/HBASE-13713) | See about dropping ClassLoaderBase#getClassLoadingLock | Minor | . | +| [HBASE-13586](https://issues.apache.org/jira/browse/HBASE-13586) | Update book on Hadoop and Java supported versions for 1.1.x | Major | documentation | +| [HBASE-11677](https://issues.apache.org/jira/browse/HBASE-11677) | Make Logger instance modifiers consistent | Minor | util | +| [HBASE-13554](https://issues.apache.org/jira/browse/HBASE-13554) | Update book clarifying API stability guarantees | Major | documentation | +| [HBASE-13487](https://issues.apache.org/jira/browse/HBASE-13487) | Doc KEEP\_DELETED\_CELLS | Major | documentation | +| [HBASE-13187](https://issues.apache.org/jira/browse/HBASE-13187) | Add ITBLL that exercises per CF flush | Critical | integration tests | +| [HBASE-13361](https://issues.apache.org/jira/browse/HBASE-13361) | Remove or undeprecate {get\|set}ScannerCaching in HTable | Minor | Client | +| [HBASE-13310](https://issues.apache.org/jira/browse/HBASE-13310) | Fix high priority findbugs warnings | Major | . | +| [HBASE-13257](https://issues.apache.org/jira/browse/HBASE-13257) | Show coverage report on jenkins | Minor | . | +| [HBASE-13233](https://issues.apache.org/jira/browse/HBASE-13233) | add hbase-11339 branch to the patch testing script | Minor | . | +| [HBASE-13237](https://issues.apache.org/jira/browse/HBASE-13237) | Improve trademark marks on the hbase.apache.org homepage | Minor | documentation | +| [HBASE-13234](https://issues.apache.org/jira/browse/HBASE-13234) | Improve the obviousness of the download link on hbase.apache.org | Minor | documentation | +| [HBASE-7126](https://issues.apache.org/jira/browse/HBASE-7126) | Update website with info on how to report security bugs | Critical | documentation | +| [HBASE-12466](https://issues.apache.org/jira/browse/HBASE-12466) | Document visibility scan label generator usage and behavior | Major | documentation, security | +| [HBASE-13177](https://issues.apache.org/jira/browse/HBASE-13177) | Document HBASE-13012 | Major | documentation, mob | +| [HBASE-11670](https://issues.apache.org/jira/browse/HBASE-11670) | Build PDF of Ref Guide | Minor | documentation | +| [HBASE-12180](https://issues.apache.org/jira/browse/HBASE-12180) | Fix and reenable TestRegionReplicaReplicationEndpoint | Major | test | +| [HBASE-12995](https://issues.apache.org/jira/browse/HBASE-12995) | Document that HConnection#getTable methods do not check table existence since 0.98.1 | Trivial | . | +| [HBASE-13079](https://issues.apache.org/jira/browse/HBASE-13079) | Add an admonition to Scans example that the results scanner should be closed | Major | documentation | +| [HBASE-12168](https://issues.apache.org/jira/browse/HBASE-12168) | Document Rest gateway SPNEGO-based authentication for client | Major | documentation, REST, security | +| [HBASE-12701](https://issues.apache.org/jira/browse/HBASE-12701) | Document how to set the split policy on a given table | Major | documentation | +| [HBASE-12783](https://issues.apache.org/jira/browse/HBASE-12783) | Create efficient RegionLocator implementation | Major | . | +| [HBASE-12785](https://issues.apache.org/jira/browse/HBASE-12785) | Use FutureTask to timeout the attempt to get the lock for hbck | Minor | . | +| [HBASE-12623](https://issues.apache.org/jira/browse/HBASE-12623) | Remove pre-0.96 to 0.96 upgrade code | Major | . | +| [HBASE-12589](https://issues.apache.org/jira/browse/HBASE-12589) | Forward-port fix for TestFromClientSideWithCoprocessor.testMaxKeyValueSize | Major | test | +| [HBASE-12515](https://issues.apache.org/jira/browse/HBASE-12515) | update test-patch to use git | Minor | build | +| [HBASE-12438](https://issues.apache.org/jira/browse/HBASE-12438) | Add -Dsurefire.rerunFailingTestsCount=2 to patch build runs so flakies get rerun | Major | test | +| [HBASE-12362](https://issues.apache.org/jira/browse/HBASE-12362) | Interim documentation of important master and regionserver metrics | Major | documentation | +| [HBASE-12239](https://issues.apache.org/jira/browse/HBASE-12239) | Document hedged reads | Major | documentation | +| [HBASE-11791](https://issues.apache.org/jira/browse/HBASE-11791) | Update docs on visibility tags and ACLs, transparent encryption, secure bulk upload | Major | documentation | +| [HBASE-11961](https://issues.apache.org/jira/browse/HBASE-11961) | Document region state transitions | Minor | . | +| [HBASE-11619](https://issues.apache.org/jira/browse/HBASE-11619) | Remove unused test class from TestHLogSplit | Trivial | wal | +| [HBASE-4593](https://issues.apache.org/jira/browse/HBASE-4593) | Design and document the official procedure for posting patches, commits, commit messages, etc. to smooth process and make integration with tools easier | Major | documentation | +| [HBASE-11729](https://issues.apache.org/jira/browse/HBASE-11729) | Document HFile v3 | Trivial | documentation, HFile | +| [HBASE-11606](https://issues.apache.org/jira/browse/HBASE-11606) | Enable ZK-less region assignment by default | Minor | . | +| [HBASE-10398](https://issues.apache.org/jira/browse/HBASE-10398) | HBase book updates for Replication after HBASE-10322 | Major | documentation | +| [HBASE-11459](https://issues.apache.org/jira/browse/HBASE-11459) | Add more doc on compression codecs, how to hook up native lib, lz4, etc. | Minor | documentation | +| [HBASE-8450](https://issues.apache.org/jira/browse/HBASE-8450) | Update hbase-default.xml and general recommendations to better suit current hw, h2, experience, etc. | Critical | Usability | + + +> NOTE: Below pre-2.0.0 changes were generated otherwise. Imported as-is, unaltered. + +``` +Release Notes - HBase - Version 1.0.0 02/20/2015 + +** Sub-task + * [HBASE-11852] - Still see "UnsupportedOperationException: CollectionUsage threshold is not supported" + * [HBASE-12485] - Maintain SeqId monotonically increasing + * [HBASE-12511] - namespace permissions - add support from table creation privilege in a namespace 'C' + * [HBASE-12568] - Adopt Semantic Versioning and document it in the book + * [HBASE-12575] - Sanity check table coprocessor classes are loadable + * [HBASE-12606] - Sanity check encryption configuration before opening WAL or onlining regions + * [HBASE-12679] - Add HBaseInterfaceAudience.TOOLS and move some of the Public classes to LimitedPrivate + * [HBASE-12704] - Add demo client which uses doAs functionality on Thrift-over-HTTPS. + * [HBASE-12730] - Backport HBASE-5162 (Basic client pushback mechanism) to branch-1 + * [HBASE-12735] - Refactor TAG so it can live as unit test and as an integration test + * [HBASE-12763] - Make it so there must be WALs for a server to be marked dead + * [HBASE-12776] - SpliTransaction: Log number of files to be split + * [HBASE-12779] - SplitTransaction: Add metrics + * [HBASE-12793] - [hbck] closeRegionSilentlyAndWait() should log cause of IOException and retry until hbase.hbck.close.timeout expires + * [HBASE-12802] - Remove unnecessary Table.flushCommits() + * [HBASE-12926] - Backport HBASE-12688 (Update site with a bootstrap-based UI) for HBASE-12918 + * [HBASE-12980] - Delete of a table may not clean all rows from hbase:meta + +** Bug + * [HBASE-8026] - HBase Shell docs for scan command does not reference VERSIONS + * [HBASE-9431] - Set 'hbase.bulkload.retries.number' to 10 as HBASE-8450 claims + * [HBASE-9910] - TestHFilePerformance and HFilePerformanceEvaluation should be merged in a single HFile performance test class. + * [HBASE-10499] - In write heavy scenario one of the regions does not get flushed causing RegionTooBusyException + * [HBASE-10528] - DefaultBalancer selects plans to move regions onto draining nodes + * [HBASE-11979] - Compaction progress reporting is wrong + * [HBASE-12028] - Abort the RegionServer, when it's handler threads die + * [HBASE-12070] - Add an option to hbck to fix ZK inconsistencies + * [HBASE-12108] - HBaseConfiguration: set classloader before loading xml files + * [HBASE-12267] - Replace HTable constructor in mapreduce.* classes with ConnectionFactory + * [HBASE-12270] - A bug in the bucket cache, with cache blocks on write enabled + * [HBASE-12339] - WAL performance evaluation tool doesn't roll logs + * [HBASE-12348] - preModifyColumn and preDeleteColumn in AC denies user to perform its operation though it has required rights + * [HBASE-12393] - The regionserver web will throw exception if we disable block cache + * [HBASE-12422] - Use ConnectionFactory in HTable constructors + * [HBASE-12431] - Use of getColumnLatestCell(byte[], int, int, byte[], int, int) is Not Thread Safe + * [HBASE-12454] - Setting didPerformCompaction early in HRegion#compact + * [HBASE-12467] - Master joins cluster but never completes initialization + * [HBASE-12480] - Regions in FAILED_OPEN/FAILED_CLOSE should be processed on master failover + * [HBASE-12564] - consolidate the getTableDescriptors() semantic + * [HBASE-12565] - Race condition in HRegion.batchMutate() causes partial data to be written when region closes + * [HBASE-12574] - Update replication metrics to not do so many map look ups. + * [HBASE-12585] - Fix refguide so it does hbase 1.0 style API everywhere with callout on how we used to do it in pre-1.0 + * [HBASE-12607] - TestHBaseFsck#testParallelHbck fails running against hadoop 2.6.0 + * [HBASE-12611] - Create autoCommit() method and remove clearBufferOnFail + * [HBASE-12617] - Running IntegrationTestBigLinkedList against cluster getting not an instance of org.apache.hadoop.hbase.MiniHBaseCluster + * [HBASE-12618] - Add 'Namespace' to headers while displaying user permissions. + * [HBASE-12622] - user_permission should require global admin to display global and ns permissions + * [HBASE-12632] - ThrottledInputStream/ExportSnapshot does not throttle + * [HBASE-12634] - Fix the AccessController#requireGlobalPermission(ns) with NS + * [HBASE-12635] - Delete acl notify znode of table after the table is deleted + * [HBASE-12637] - Compilation with Hadoop-2.4- is broken + * [HBASE-12642] - LoadIncrementalHFiles does not throw exception after hitting hbase.bulkload.retries.number setting + * [HBASE-12644] - Visibility Labels: issue with storing super users in labels table + * [HBASE-12647] - Truncate table should work with C as well + * [HBASE-12652] - Allow unmanaged connections in MetaTableAccessor + * [HBASE-12655] - WALPerformanceEvaluation miscalculates append/sync statistics for multiple regions + * [HBASE-12661] - rat check fails for several files + * [HBASE-12662] - region_status.rb is failing with NoMethodError + * [HBASE-12663] - unify getTableDescriptors() and listTableDescriptorsByNamespace() + * [HBASE-12664] - TestDefaultLoadBalancer.testBalanceCluster fails in CachedDNSToSwitchMapping + * [HBASE-12665] - When aborting, dump metrics + * [HBASE-12666] - TestAssignmentManager hanging; add timeouts + * [HBASE-12671] - HBASE-12652 broke branch-1 builds (TestAssignmentManager fails) + * [HBASE-12674] - Add permission check to getNamespaceDescriptor() + * [HBASE-12675] - Use interface methods in shell scripts + * [HBASE-12681] - truncate_preserve command fails with undefined method `getTable' error + * [HBASE-12683] - Compilation with hadoop-2.7.0-SNAPSHOT is broken + * [HBASE-12686] - Failures in split before PONR not clearing the daughter regions from regions in transition during rollback + * [HBASE-12692] - NPE from SnapshotManager#stop + * [HBASE-12694] - testTableExistsIfTheSpecifiedTableRegionIsSplitParent in TestSplitTransactionOnCluster class leaves regions in transition + * [HBASE-12696] - Possible NPE in HRegionFileSystem#splitStoreFile when skipStoreFileRangeCheck in splitPolicy return true + * [HBASE-12697] - Don't use RegionLocationFinder if localityCost == 0 + * [HBASE-12699] - undefined method `setAsyncLogFlush' exception thrown when setting DEFERRED_LOG_FLUSH=>true + * [HBASE-12711] - Fix new findbugs warnings in hbase-thrift module + * [HBASE-12715] - getLastSequenceId always returns -1 + * [HBASE-12716] - A bug in RegionSplitter.UniformSplit algorithm + * [HBASE-12718] - Convert TestAcidGuarantees from a unit test to an integration test + * [HBASE-12728] - buffered writes substantially less useful after removal of HTablePool + * [HBASE-12732] - Log messages in FileLink$FileLinkInputStream#tryOpen are reversed + * [HBASE-12739] - Avoid too large identifier of ZooKeeperWatcher + * [HBASE-12740] - Improve performance of TestHBaseFsck + * [HBASE-12741] - AccessController contains a javadoc issue + * [HBASE-12742] - ClusterStatusPublisher crashes with a IPv6 network interface. + * [HBASE-12744] - hbase-default.xml lists hbase.regionserver.global.memstore.size twice + * [HBASE-12746] - [1.0.0RC0] Distributed Log Replay is on (HBASE-12577 was insufficient) + * [HBASE-12747] - IntegrationTestMTTR will OOME if launched with mvn verify + * [HBASE-12750] - getRequestsCount() in ClusterStatus returns total number of request + * [HBASE-12767] - Fix a StoreFileScanner NPE in reverse scan flow + * [HBASE-12771] - TestFailFast#testFastFail failing + * [HBASE-12774] - Fix the inconsistent permission checks for bulkloading. + * [HBASE-12781] - thrift2 listen port will bind always to the passed command line address + * [HBASE-12782] - ITBLL fails for me if generator does anything but 5M per maptask + * [HBASE-12791] - HBase does not attempt to clean up an aborted split when the regionserver shutting down + * [HBASE-12798] - Map Reduce jobs should not create Tables in setConf() + * [HBASE-12801] - Failed to truncate a table while maintaing binary region boundaries + * [HBASE-12804] - ImportTsv fails to delete partition files created by it + * [HBASE-12810] - Update to htrace-incubating + * [HBASE-12811] - [AccessController] NPE while scanning a table with user not having READ permission on the namespace + * [HBASE-12817] - Data missing while scanning using PREFIX_TREE data block encoding + * [HBASE-12819] - ExportSnapshot doesn't close FileSystem instances + * [HBASE-12824] - CompressionTest fails with org.apache.hadoop.hbase.io.hfile.AbstractHFileReader$NotSeekedException: Not seeked to a key/value + * [HBASE-12831] - Changing the set of vis labels a user has access to doesn't generate an audit log event + * [HBASE-12832] - Describe table from shell no longer shows Table's attributes, only CF attributes + * [HBASE-12833] - [shell] table.rb leaks connections + * [HBASE-12835] - HBASE-12422 changed new HTable(Configuration) to not use managed Connections anymore + * [HBASE-12837] - ReplicationAdmin leaks zk connections + * [HBASE-12844] - ServerManager.isServerReacable() should sleep between retries + * [HBASE-12847] - TestZKLessSplitOnCluster frequently times out in 0.98 builds + * [HBASE-12862] - Uppercase "wals" in RegionServer webUI + * [HBASE-12863] - Master info port on RS UI is always 0 + * [HBASE-12864] - IntegrationTestTableSnapshotInputFormat fails + * [HBASE-12874] - LoadIncrementalHFiles should use unmanaged connection + * [HBASE-12878] - Incorrect HFile path in TestHFilePerformance print output (fix for easier debugging) + * [HBASE-12881] - TestFastFail is not compatible with surefire.rerunFailingTestsCount + * [HBASE-12886] - Correct tag option name in PerformanceEvaluation + * [HBASE-12892] - Add a class to allow taking a snapshot from the command line + * [HBASE-12897] - Minimum memstore size is a percentage + * [HBASE-12898] - Add in used undeclared dependencies + * [HBASE-12901] - Possible deadlock while onlining a region and get region plan for other region run parallel + * [HBASE-12904] - Threading issues in region_mover.rb + * [HBASE-12915] - Disallow small scan with batching + * [HBASE-12916] - No access control for replicating WAL entries + * [HBASE-12917] - HFilePerformanceEvaluation Scan tests fail with StackOverflowError due to recursive call in createCell function + * [HBASE-12918] - Backport asciidoc changes + * [HBASE-12919] - Compilation with Hadoop-2.4- is broken again + * [HBASE-12925] - Use acl cache for doing access control checks in prepare and clean phases of Bulkloading. + * [HBASE-12942] - After disabling the hfile block cache, Regionserver UI is throwing java.lang.NullPointerException + * [HBASE-12956] - Binding to 0.0.0.0 is broken after HBASE-10569 + * [HBASE-12958] - SSH doing hbase:meta get but hbase:meta not assigned + * [HBASE-12962] - TestHFileBlockIndex.testBlockIndex() commented out during HBASE-10531 + * [HBASE-12966] - NPE in HMaster while recovering tables in Enabling state + * [HBASE-12971] - Replication stuck due to large default value for replication.source.maxretriesmultiplier + * [HBASE-12976] - Set default value for hbase.client.scanner.max.result.size + * [HBASE-12978] - Region goes permanently offline (WAS: hbase:meta has a row missing hregioninfo and it causes my long-running job to fail) + * [HBASE-12984] - SSL cannot be used by the InfoPort after removing deprecated code in HBASE-10336 + * [HBASE-12985] - Javadoc warning and findbugs fixes to get us green again + * [HBASE-12989] - region_mover.rb unloadRegions method uses ArrayList concurrently resulting in errors + * [HBASE-12991] - Use HBase 1.0 interfaces in hbase-rest + * [HBASE-12996] - Reversed field on Filter should be transient + * [HBASE-12998] - Compilation with Hdfs-2.7.0-SNAPSHOT is broken after HDFS-7647 + * [HBASE-13003] - Get tests in TestHFileBlockIndex back + * [HBASE-13009] - HBase REST UI inaccessible + * [HBASE-13010] - HFileOutputFormat2 partitioner's path is hard-coded as '/tmp' + * [HBASE-13026] - Wrong error message in case incorrect snapshot name OR Incorrect table name + * [HBASE-13027] - mapreduce.TableInputFormatBase should create its own Connection if needed + * [HBASE-13028] - Cleanup mapreduce API changes + * [HBASE-13030] - [1.0.0 polish] Make ScanMetrics public again and align Put 'add' with Get, Delete, etc., addColumn + * [HBASE-13037] - LoadIncrementalHFile should try to verify the content of unmatched families + * [HBASE-13038] - Fix the java doc warning continuously reported by Hadoop QA + * [HBASE-13039] - Add patchprocess/* to .gitignore to fix builds of branches + +** Improvement + * [HBASE-5699] - Run with > 1 WAL in HRegionServer + * [HBASE-11195] - Potentially improve block locality during major compaction for old regions + * [HBASE-11412] - Minimize a number of hbase-client transitive dependencies + * [HBASE-11639] - [Visibility controller] Replicate the visibility of Cells as strings + * [HBASE-12071] - Separate out thread pool for Master <-> RegionServer communication + * [HBASE-12121] - maven release plugin does not allow for customized goals + * [HBASE-12204] - Backport HBASE-12016 'Reduce number of versions in Meta table. Make it configurable' to branch-1 + * [HBASE-12373] - Provide a command to list visibility labels + * [HBASE-12583] - Allow creating reference files even the split row not lies in the storefile range if required + * [HBASE-12597] - Add RpcClient interface and enable changing of RpcClient implementation + * [HBASE-12608] - region_mover.rb does not log moving region count correctly when loading regions + * [HBASE-12630] - Provide capability for dropping malfunctioning ConfigurationObserver automatically + * [HBASE-12640] - Add Thrift-over-HTTPS and doAs support for Thrift Server + * [HBASE-12641] - Grant all permissions of hbase zookeeper node to hbase superuser in a secure cluster + * [HBASE-12651] - Backport HBASE-12559 'Provide LoadBalancer with online configuration capability' to branch-1 + * [HBASE-12653] - Move TestRegionServerOnlineConfigChange & TestConfigurationManager to Junit4 tests + * [HBASE-12659] - Replace the method calls to grant and revoke in shell scripts with AccessControlClient + * [HBASE-12668] - Adapt PayloadCarryingRpcController so it can also be used in async way + * [HBASE-12676] - Fix the misleading ASCII art in IntegrationTestBigLinkedList + * [HBASE-12678] - HBCK should print command line arguments + * [HBASE-12680] - Refactor base ClusterManager in HBase to not have the notion of sending a signal. + * [HBASE-12719] - Add test WAL provider to quantify FSHLog overhead in the absence of HDFS. + * [HBASE-12720] - Make InternalScan LimitedPrivate + * [HBASE-12736] - Let MetaScanner recycle a given Connection + * [HBASE-12745] - Visibility Labels: support visibility labels for user groups. + * [HBASE-12762] - Region with no hfiles will have the highest locality cost in LocalityCostFunction + * [HBASE-12768] - Support enable cache_data_on_write in Shell while creating table + * [HBASE-12773] - Add warning message when user is trying to bulkload a large HFile. + * [HBASE-12825] - CallRunner exception messages should include destination host:port + * [HBASE-12893] - IntegrationTestBigLinkedListWithVisibility should use buffered writes + * [HBASE-12899] - HBase should prefix htrace configuration keys with "hbase.htrace" rather than just "hbase." + * [HBASE-12929] - TableMapReduceUtil.initTableMapperJob unnecessarily limits the types of outputKeyClass and outputValueClass + * [HBASE-12973] - RegionCoprocessorEnvironment should provide HRegionInfo directly + * [HBASE-12979] - Use setters instead of return values for handing back statistics from HRegion methods + * [HBASE-12997] - FSHLog should print pipeline on low replication + * [HBASE-13008] - Better default for hbase.regionserver.regionSplitLimit parameter. + +** New Feature + * [HBASE-9531] - a command line (hbase shell) interface to retreive the replication metrics and show replication lag + * [HBASE-10560] - Per cell TTLs + * [HBASE-12709] - [mvn] Add unit test excludes command line flag to the build. + * [HBASE-12731] - Heap occupancy based client pushback + +** Task + * [HBASE-12493] - User class should provide a way to re-use existing token + * [HBASE-12567] - Track remaining issues for HBase-1.0 + * [HBASE-12624] - Remove rename_snapshot.rb from code as there is no equivalent renameSnapshot api in Admin class + * [HBASE-12625] - Deprecate certain methods in classes annotated with InterfaceAudience.Public in branch-1 + * [HBASE-12689] - Move version on from 0.99.2 to HBASE-1.0.0-SNAPSHOT + * [HBASE-12724] - Upgrade the interface audience of RegionScanner from Private to LimitedPrivate + * [HBASE-12726] - Backport to branch-1.0 addendum for "Minimize a number of hbase-client transitive dependencies" + * [HBASE-12788] - Promote Abortable to LimitedPrivate + * [HBASE-12834] - Promote ScanType to LimitedPrivate + +** Test + * [HBASE-12163] - Move test annotation classes to the same package as in master + * [HBASE-12645] - HBaseTestingUtility is using ${$HOME} for rootDir + * [HBASE-12685] - TestSplitLogManager#testLogFilesAreArchived sometimes times out due to race condition + * [HBASE-12799] - ITAG fails with java.lang.RuntimeException if table does not exist + * [HBASE-12885] - Unit test for RAW / VERSIONS scanner specifications + +Release Notes - HBase - Version 0.99.2 12/07/2014 + +** Sub-task + * [HBASE-10671] - Add missing InterfaceAudience annotations for classes in hbase-common and hbase-client modules + * [HBASE-11164] - Document and test rolling updates from 0.98 -> 1.0 + * [HBASE-11915] - Document and test 0.94 -> 1.0.0 update + * [HBASE-11964] - Improve spreading replication load from failed regionservers + * [HBASE-12075] - Preemptive Fast Fail + * [HBASE-12128] - Cache configuration and RpcController selection for Table in Connection + * [HBASE-12147] - Porting Online Config Change from 89-fb + * [HBASE-12202] - Support DirectByteBuffer usage in HFileBlock + * [HBASE-12214] - Visibility Controller in the peer cluster should be able to extract visibility tags from the replicated cells + * [HBASE-12288] - Support DirectByteBuffer usage in DataBlock Encoding area + * [HBASE-12297] - Support DBB usage in Bloom and HFileIndex area + * [HBASE-12313] - Redo the hfile index length optimization so cell-based rather than serialized KV key + * [HBASE-12353] - Turn down logging on some spewing unit tests + * [HBASE-12354] - Update dependencies in time for 1.0 release + * [HBASE-12355] - Update maven plugins + * [HBASE-12363] - Improve how KEEP_DELETED_CELLS works with MIN_VERSIONS + * [HBASE-12379] - Try surefire 2.18-SNAPSHOT + * [HBASE-12400] - Fix refguide so it does connection#getTable rather than new HTable everywhere: first cut! + * [HBASE-12404] - Task 5 from parent: Replace internal HTable constructor use with HConnection#getTable (0.98, 0.99) + * [HBASE-12471] - Task 4. replace internal ConnectionManager#{delete,get}Connection use with #close, #createConnection (0.98, 0.99) under src/main/java + * [HBASE-12517] - Several HConstant members are assignable + * [HBASE-12518] - Task 4 polish. Remove CM#{get,delete}Connection + * [HBASE-12519] - Remove tabs used as whitespace + * [HBASE-12526] - Remove unused imports + * [HBASE-12577] - Disable distributed log replay by default + + + +** Bug + * [HBASE-7211] - Improve hbase ref guide for the testing part. + * [HBASE-9003] - TableMapReduceUtil should not rely on org.apache.hadoop.util.JarFinder#getJar + * [HBASE-9117] - Remove HTablePool and all HConnection pooling related APIs + * [HBASE-9157] - ZKUtil.blockUntilAvailable loops forever with non-recoverable errors + * [HBASE-9527] - Review all old api that takes a table name as a byte array and ensure none can pass ns + tablename + * [HBASE-10536] - ImportTsv should fail fast if any of the column family passed to the job is not present in the table + * [HBASE-10780] - HFilePrettyPrinter#processFile should return immediately if file does not exist + * [HBASE-11099] - Two situations where we could open a region with smaller sequence number + * [HBASE-11562] - CopyTable should provide an option to shuffle the mapper tasks + * [HBASE-11835] - Wrong managenement of non expected calls in the client + * [HBASE-12017] - Use Connection.createTable() instead of HTable constructors. + * [HBASE-12029] - Use Table and RegionLocator in HTable.getRegionLocations() + * [HBASE-12053] - SecurityBulkLoadEndPoint set 777 permission on input data files + * [HBASE-12072] - Standardize retry handling for master operations + * [HBASE-12083] - Deprecate new HBaseAdmin() in favor of Connection.getAdmin() + * [HBASE-12142] - Truncate command does not preserve ACLs table + * [HBASE-12194] - Make TestEncodedSeekers faster + * [HBASE-12219] - Cache more efficiently getAll() and get() in FSTableDescriptors + * [HBASE-12226] - TestAccessController#testPermissionList failing on master + * [HBASE-12229] - NullPointerException in SnapshotTestingUtils + * [HBASE-12234] - Make TestMultithreadedTableMapper a little more stable. + * [HBASE-12237] - HBaseZeroCopyByteString#wrap() should not be called in hbase-client code + * [HBASE-12238] - A few ugly exceptions on startup + * [HBASE-12240] - hbase-daemon.sh should remove pid file if process not found running + * [HBASE-12241] - The crash of regionServer when taking deadserver's replication queue breaks replication + * [HBASE-12242] - Fix new javadoc warnings in Admin, etc. + * [HBASE-12246] - Compilation with hadoop-2.3.x and 2.2.x is broken + * [HBASE-12247] - Replace setHTable() with initializeTable() in TableInputFormat. + * [HBASE-12248] - broken link in hbase shell help + * [HBASE-12252] - IntegrationTestBulkLoad fails with illegal partition error + * [HBASE-12257] - TestAssignmentManager unsynchronized access to regionPlans + * [HBASE-12258] - Make TestHBaseFsck less flaky + * [HBASE-12261] - Add checkstyle to HBase build process + * [HBASE-12263] - RegionServer listens on localhost in distributed cluster when DNS is unavailable + * [HBASE-12265] - HBase shell 'show_filters' points to internal Facebook URL + * [HBASE-12274] - Race between RegionScannerImpl#nextInternal() and RegionScannerImpl#close() may produce null pointer exception + * [HBASE-12277] - Refactor bulkLoad methods in AccessController to its own interface + * [HBASE-12278] - Race condition in TestSecureLoadIncrementalHFilesSplitRecovery + * [HBASE-12279] - Generated thrift files were generated with the wrong parameters + * [HBASE-12281] - ClonedPrefixTreeCell should implement HeapSize + * [HBASE-12285] - Builds are failing, possibly because of SUREFIRE-1091 + * [HBASE-12294] - Can't build the docs after the hbase-checkstyle module was added + * [HBASE-12301] - user_permission command does not show global permissions + * [HBASE-12302] - VisibilityClient getAuths does not propagate remote service exception correctly + * [HBASE-12304] - CellCounter will throw AIOBE when output directory is not specified + * [HBASE-12306] - CellCounter output's wrong value for Total Families Across all Rows in output file + * [HBASE-12308] - Fix typo in hbase-rest profile name + * [HBASE-12312] - Another couple of createTable race conditions + * [HBASE-12314] - Add chaos monkey policy to execute two actions concurrently + * [HBASE-12315] - Fix 0.98 Tests after checkstyle got parented + * [HBASE-12316] - test-patch.sh (Hadoop-QA) outputs the wrong release audit warnings URL + * [HBASE-12318] - Add license header to checkstyle xml files + * [HBASE-12319] - Inconsistencies during region recovery due to close/open of a region during recovery + * [HBASE-12322] - Add clean up command to ITBLL + * [HBASE-12327] - MetricsHBaseServerSourceFactory#createContextName has wrong conditions + * [HBASE-12329] - Table create with duplicate column family names quietly succeeds + * [HBASE-12334] - Handling of DeserializationException causes needless retry on failure + * [HBASE-12336] - RegionServer failed to shutdown for NodeFailoverWorker thread + * [HBASE-12337] - Import tool fails with NullPointerException if clusterIds is not initialized + * [HBASE-12346] - Scan's default auths behavior under Visibility labels + * [HBASE-12352] - Add hbase-annotation-tests to runtime classpath so can run hbase it tests. + * [HBASE-12356] - Rpc with region replica does not propagate tracing spans + * [HBASE-12359] - MulticastPublisher should specify IPv4/v6 protocol family when creating multicast channel + * [HBASE-12366] - Add login code to HBase Canary tool. + * [HBASE-12372] - [WINDOWS] Enable log4j configuration in hbase.cmd + * [HBASE-12375] - LoadIncrementalHFiles fails to load data in table when CF name starts with '_' + * [HBASE-12377] - HBaseAdmin#deleteTable fails when META region is moved around the same timeframe + * [HBASE-12384] - TestTags can hang on fast test hosts + * [HBASE-12386] - Replication gets stuck following a transient zookeeper error to remote peer cluster + * [HBASE-12398] - Region isn't assigned in an extreme race condition + * [HBASE-12399] - Master startup race between metrics and RpcServer + * [HBASE-12402] - ZKPermissionWatcher race condition in refreshing the cache leaving stale ACLs and causing AccessDenied + * [HBASE-12407] - HConnectionKey doesn't contain CUSTOM_CONTROLLER_CONF_KEY in CONNECTION_PROPERTIES + * [HBASE-12414] - Move HFileLink.exists() to base class + * [HBASE-12417] - Scan copy constructor does not retain small attribute + * [HBASE-12419] - "Partial cell read caused by EOF" ERRORs on replication source during replication + * [HBASE-12420] - BucketCache logged startup message is egregiously large + * [HBASE-12423] - Use a non-managed Table in TableOutputFormat + * [HBASE-12428] - region_mover.rb script is broken if port is not specified + * [HBASE-12440] - Region may remain offline on clean startup under certain race condition + * [HBASE-12445] - hbase is removing all remaining cells immediately after the cell marked with marker = KeyValue.Type.DeleteColumn via PUT + * [HBASE-12448] - Fix rate reporting in compaction progress DEBUG logging + * [HBASE-12449] - Use the max timestamp of current or old cell's timestamp in HRegion.append() + * [HBASE-12450] - Unbalance chaos monkey might kill all region servers without starting them back + * [HBASE-12459] - Use a non-managed Table in mapred.TableOutputFormat + * [HBASE-12460] - Moving Chore to hbase-common module. + * [HBASE-12461] - FSVisitor logging is excessive + * [HBASE-12464] - meta table region assignment stuck in the FAILED_OPEN state due to region server not fully ready to serve + * [HBASE-12478] - HBASE-10141 and MIN_VERSIONS are not compatible + * [HBASE-12479] - Backport HBASE-11689 (Track meta in transition) to 0.98 and branch-1 + * [HBASE-12490] - Replace uses of setAutoFlush(boolean, boolean) + * [HBASE-12491] - TableMapReduceUtil.findContainingJar() NPE + * [HBASE-12495] - Use interfaces in the shell scripts + * [HBASE-12513] - Graceful stop script does not restore the balancer state + * [HBASE-12514] - Cleanup HFileOutputFormat legacy code + * [HBASE-12520] - Add protected getters on TableInputFormatBase + * [HBASE-12533] - staging directories are not deleted after secure bulk load + * [HBASE-12536] - Reduce the effective scope of GLOBAL CREATE and ADMIN permission + * [HBASE-12537] - HBase should log the remote host on replication error + * [HBASE-12539] - HFileLinkCleaner logs are uselessly noisy + * [HBASE-12541] - Add misc debug logging to hanging tests in TestHCM and TestBaseLoadBalancer + * [HBASE-12544] - ops_mgt.xml missing in branch-1 + * [HBASE-12550] - Check all storefiles are referenced before splitting + * [HBASE-12560] - [WINDOWS] Append the classpath from Hadoop to HBase classpath in bin/hbase.cmd + * [HBASE-12576] - Add metrics for rolling the HLog if there are too few DN's in the write pipeline + * [HBASE-12580] - Zookeeper instantiated even though we might not need it in the shell + * [HBASE-12581] - TestCellACLWithMultipleVersions failing since task 5 HBASE-12404 (HBASE-12404 addendum) + * [HBASE-12584] - Fix branch-1 failing since task 5 HBASE-12404 (HBASE-12404 addendum) + * [HBASE-12595] - Use Connection.getTable() in table.rb + * [HBASE-12600] - Remove REPLAY tag dependency in Distributed Replay Mode + * [HBASE-12610] - Close connection in TableInputFormatBase + * [HBASE-12611] - Create autoCommit() method and remove clearBufferOnFail + * [HBASE-12614] - Potentially unclosed StoreFile(s) in DefaultCompactor#compact() + * [HBASE-12616] - We lost the IntegrationTestBigLinkedList COMMANDS in recent usage refactoring + + + + +** Improvement + * [HBASE-2609] - Harmonize the Get and Delete operations + * [HBASE-4955] - Use the official versions of surefire & junit + * [HBASE-8361] - Bulk load and other utilities should not create tables for user + * [HBASE-8572] - Enhance delete_snapshot.rb to call snapshot deletion API with regex + * [HBASE-10082] - Describe 'table' output is all on one line, could use better formatting + * [HBASE-10483] - Provide API for retrieving info port when hbase.master.info.port is set to 0 + * [HBASE-11639] - [Visibility controller] Replicate the visibility of Cells as strings + * [HBASE-11870] - Optimization : Avoid copy of key and value for tags addition in AC and VC + * [HBASE-12161] - Add support for grant/revoke on namespaces in AccessControlClient + * [HBASE-12243] - HBaseFsck should auto set ignorePreCheckPermission to true if no fix option is set. + * [HBASE-12249] - Script to help you adhere to the patch-naming guidelines + * [HBASE-12264] - ImportTsv should fail fast if output is not specified and table does not exist + * [HBASE-12271] - Add counters for files skipped during snapshot export + * [HBASE-12272] - Generate Thrift code through maven + * [HBASE-12328] - Need to separate JvmMetrics for Master and RegionServer + * [HBASE-12389] - Reduce the number of versions configured for the ACL table + * [HBASE-12390] - Change revision style from svn to git + * [HBASE-12411] - Optionally enable p-reads and private readers for compactions + * [HBASE-12416] - RegionServerCallable should report what host it was communicating with + * [HBASE-12424] - Finer grained logging and metrics for split transactions + * [HBASE-12432] - RpcRetryingCaller should log after fixed number of retries like AsyncProcess + * [HBASE-12434] - Add a command to compact all the regions in a regionserver + * [HBASE-12447] - Add support for setTimeRange for RowCounter and CellCounter + * [HBASE-12455] - Add 'description' to bean and attribute output when you do /jmx?description=true + * [HBASE-12529] - Use ThreadLocalRandom for RandomQueueBalancer + * [HBASE-12569] - Control MaxDirectMemorySize in the same manner as heap size + +** New Feature + * [HBASE-8707] - Add LongComparator for filter + * [HBASE-12286] - [shell] Add server/cluster online load of configuration changes + * [HBASE-12361] - Show data locality of region in table page + * [HBASE-12496] - A blockedRequestsCount metric + + + + + + + + +** Task + * [HBASE-10200] - Better error message when HttpServer fails to start due to java.net.BindException + * [HBASE-10870] - Deprecate and replace HCD methods that have a 'should' prefix with a 'get' instead + * [HBASE-12250] - Adding an endpoint for updating the regionserver config + * [HBASE-12344] - Split up TestAdmin + * [HBASE-12381] - Add maven enforcer rules for build assumptions + * [HBASE-12388] - Document that WALObservers don't get empty edits. + * [HBASE-12427] - Change branch-1 version from 0.99.2-SNAPSHOT to 0.99.3-SNAPSHOT + * [HBASE-12442] - Bring KeyValue#createFirstOnRow() back to branch-1 as deprecated methods + * [HBASE-12456] - Update surefire from 2.18-SNAPSHOT to 2.18 + * [HBASE-12516] - Clean up master so QA Bot is in known good state + * [HBASE-12522] - Backport WAL refactoring to branch-1 + + +** Test + * [HBASE-12317] - Run IntegrationTestRegionReplicaPerf w.o mapred + * [HBASE-12335] - IntegrationTestRegionReplicaPerf is flaky + * [HBASE-12367] - Integration tests should not restore the cluster if the CM is not destructive + * [HBASE-12378] - Add a test to verify that the read-replica is able to read after a compaction + * [HBASE-12401] - Add some timestamp signposts in IntegrationTestMTTR + * [HBASE-12403] - IntegrationTestMTTR flaky due to aggressive RS restart timeout + * [HBASE-12472] - Improve debuggability of IntegrationTestBulkLoad + * [HBASE-12549] - Fix TestAssignmentManagerOnCluster#testAssignRacingWithSSH() flaky test + * [HBASE-12554] - TestBaseLoadBalancer may timeout due to lengthy rack lookup + +** Umbrella + * [HBASE-10602] - Cleanup HTable public interface + * [HBASE-10856] - Prep for 1.0 + + + +Release Notes - HBase - Version 0.99.1 10/15/2014 + +** Sub-task + * [HBASE-11160] - Undo append waiting on region edit/sequence id update + * [HBASE-11178] - Remove deprecation annotations from mapred namespace + * [HBASE-11738] - Document improvements to LoadTestTool and PerformanceEvaluation + * [HBASE-11872] - Avoid usage of KeyValueUtil#ensureKeyValue from Compactor + * [HBASE-11874] - Support Cell to be passed to StoreFile.Writer rather than KeyValue + * [HBASE-11917] - Deprecate / Remove HTableUtil + * [HBASE-11920] - Add CP hooks for ReplicationEndPoint + * [HBASE-11930] - Document new permission check to roll WAL writer + * [HBASE-11980] - Change sync to hsync, remove unused InfoServer, and reference our httpserver instead of hadoops + * [HBASE-11997] - CopyTable with bulkload + * [HBASE-12023] - HRegion.applyFamilyMapToMemstore creates too many iterator objects. + * [HBASE-12046] - HTD/HCD setters should be builder-style + * [HBASE-12047] - Avoid usage of KeyValueUtil#ensureKeyValue in simple cases + * [HBASE-12050] - Avoid KeyValueUtil#ensureKeyValue from DefaultMemStore + * [HBASE-12051] - Avoid KeyValueUtil#ensureKeyValue from DefaultMemStore + * [HBASE-12059] - Create hbase-annotations module + * [HBASE-12062] - Fix usage of Collections.toArray + * [HBASE-12068] - [Branch-1] Avoid need to always do KeyValueUtil#ensureKeyValue for Filter transformCell + * [HBASE-12069] - Finish making HFile.Writer Cell-centric; undo APIs that expect KV serializations. + * [HBASE-12076] - Move InterfaceAudience imports to hbase-annotations + * [HBASE-12077] - FilterLists create many ArrayList$Itr objects per row. + * [HBASE-12079] - Deprecate KeyValueUtil#ensureKeyValue(s) + * [HBASE-12082] - Find a way to set timestamp on Cells on the server + * [HBASE-12086] - Fix bugs in HTableMultiplexer + * [HBASE-12096] - In ZKSplitLog Coordination and AggregateImplementation replace enhaced for statements with basic for statement to avoid unnecessary object allocation + * [HBASE-12104] - Some optimization and bugfix for HTableMultiplexer + * [HBASE-12110] - Fix .arcconfig + * [HBASE-12112] - Avoid KeyValueUtil#ensureKeyValue some more simple cases + * [HBASE-12115] - Fix NumberFormat Exception in TableInputFormatBase. + * [HBASE-12189] - Fix new issues found by coverity static analysis + * [HBASE-12210] - Avoid KeyValue in Prefix Tree + +** Bug + * [HBASE-6994] - minor doc update about DEFAULT_ACCEPTABLE_FACTOR + * [HBASE-8808] - Use Jacoco to generate Unit Test coverage reports + * [HBASE-8936] - Fixing TestSplitLogWorker while running Jacoco tests. + * [HBASE-9005] - Improve documentation around KEEP_DELETED_CELLS, time range scans, and delete markers + * [HBASE-9513] - Why is PE#RandomSeekScanTest way slower in 0.96 than in 0.94? + * [HBASE-10314] - Add Chaos Monkey that doesn't touch the master + * [HBASE-10748] - hbase-daemon.sh fails to execute with 'sh' command + * [HBASE-10757] - Change HTable class doc so it sends people to HCM getting instances + * [HBASE-11145] - UNEXPECTED!!! when HLog sync: Queue full + * [HBASE-11266] - Remove shaded references to logger + * [HBASE-11394] - Replication can have data loss if peer id contains hyphen "-" + * [HBASE-11401] - Late-binding sequenceid presumes a particular KeyValue mvcc format hampering experiment + * [HBASE-11405] - Multiple invocations of hbck in parallel disables balancer permanently + * [HBASE-11804] - Raise default heap size if unspecified + * [HBASE-11815] - Flush and compaction could just close the tmp writer if there is an exception + * [HBASE-11890] - HBase REST Client is hard coded to http protocol + * [HBASE-11906] - Meta data loss with distributed log replay + * [HBASE-11967] - HMaster in standalone won't go down if it gets 'Unhandled exception' + * [HBASE-11974] - When a disabled table is scanned, NotServingRegionException is thrown instead of TableNotEnabledException + * [HBASE-11982] - Bootstraping hbase:meta table creates a WAL file in region dir + * [HBASE-11988] - AC/VC system table create on postStartMaster fails too often in test + * [HBASE-11991] - Region states may be out of sync + * [HBASE-11994] - PutCombiner floods the M/R log with repeated log messages. + * [HBASE-12007] - StochasticBalancer should avoid putting user regions on master + * [HBASE-12019] - hbase-daemon.sh overwrite HBASE_ROOT_LOGGER and HBASE_SECURITY_LOGGER variables + * [HBASE-12024] - Fix javadoc warning + * [HBASE-12025] - TestHttpServerLifecycle.testStartedServerWithRequestLog hangs frequently + * [HBASE-12034] - If I kill single RS in branch-1, all regions end up on Master! + * [HBASE-12038] - Replace internal uses of signatures with byte[] and String tableNames to use the TableName equivalents. + * [HBASE-12041] - AssertionError in HFilePerformanceEvaluation.UniformRandomReadBenchmark + * [HBASE-12042] - Replace internal uses of HTable(Configuration, String) with HTable(Configuration, TableName) + * [HBASE-12043] - REST server should respond with FORBIDDEN(403) code on AccessDeniedException + * [HBASE-12044] - REST delete operation should not retry disableTable for DoNotRetryIOException + * [HBASE-12045] - REST proxy users configuration in hbase-site.xml is ignored + * [HBASE-12052] - BulkLoad Failed due to no write permission on input files + * [HBASE-12054] - bad state after NamespaceUpgrade with reserved table names + * [HBASE-12056] - RPC logging too much in DEBUG mode + * [HBASE-12064] - hbase.master.balancer.stochastic.numRegionLoadsToRemember is not used + * [HBASE-12065] - Import tool is not restoring multiple DeleteFamily markers of a row + * [HBASE-12067] - Remove deprecated metrics classes. + * [HBASE-12078] - Missing Data when scanning using PREFIX_TREE DATA-BLOCK-ENCODING + * [HBASE-12095] - SecureWALCellCodec should handle the case where encryption is disabled + * [HBASE-12098] - User granted namespace table create permissions can't create a table + * [HBASE-12099] - TestScannerModel fails if using jackson 1.9.13 + * [HBASE-12106] - Move test annotations to test artifact + * [HBASE-12109] - user_permission command for namespace does not return correct result + * [HBASE-12119] - Master regionserver web UI NOT_FOUND + * [HBASE-12120] - HBase shell doesn't allow deleting of a cell by user with W-only permissions to it + * [HBASE-12122] - Try not to assign user regions to master all the time + * [HBASE-12123] - Failed assertion in BucketCache after 11331 + * [HBASE-12124] - Closed region could stay closed if master stops at bad time + * [HBASE-12126] - Region server coprocessor endpoint + * [HBASE-12130] - HBASE-11980 calls hflush and hsync doing near double the syncing work + * [HBASE-12134] - publish_website.sh script is too optimistic + * [HBASE-12135] - Website is broken + * [HBASE-12136] - Race condition between client adding tableCF replication znode and server triggering TableCFsTracker + * [HBASE-12137] - Alter table add cf doesn't do compression test + * [HBASE-12139] - StochasticLoadBalancer doesn't work on large lightly loaded clusters + * [HBASE-12140] - Add ConnectionFactory.createConnection() to create using default HBaseConfiguration. + * [HBASE-12145] - Fix javadoc and findbugs so new folks aren't freaked when they see them + * [HBASE-12146] - RegionServerTracker should escape data in log messages + * [HBASE-12149] - TestRegionPlacement is failing undeterministically + * [HBASE-12151] - Make dev scripts executable + * [HBASE-12153] - Fixing TestReplicaWithCluster + * [HBASE-12156] - TableName cache isn't used for one of valueOf methods. + * [HBASE-12158] - TestHttpServerLifecycle.testStartedServerWithRequestLog goes zombie on occasion + * [HBASE-12160] - Make Surefire's argLine configurable in the command line + * [HBASE-12164] - Check for presence of user Id in SecureBulkLoadEndpoint#secureBulkLoadHFiles() is inaccurate + * [HBASE-12165] - TestEndToEndSplitTransaction.testFromClientSideWhileSplitting fails + * [HBASE-12166] - TestDistributedLogSplitting.testMasterStartsUpWithLogReplayWork + * [HBASE-12167] - NPE in AssignmentManager + * [HBASE-12170] - TestReplicaWithCluster.testReplicaAndReplication timeouts + * [HBASE-12181] - Some tests create a table and try to use it before regions get assigned + * [HBASE-12183] - FuzzyRowFilter doesn't support reverse scans + * [HBASE-12184] - ServerShutdownHandler throws NPE + * [HBASE-12191] - Make TestCacheOnWrite faster. + * [HBASE-12196] - SSH should retry in case failed to assign regions + * [HBASE-12197] - Move REST + * [HBASE-12198] - Fix the bug of not updating location cache + * [HBASE-12199] - Make TestAtomicOperation and TestEncodedSeekers faster + * [HBASE-12200] - When an RPC server handler thread dies, throw exception + * [HBASE-12206] - NPE in RSRpcServices + * [HBASE-12209] - NPE in HRegionServer#getLastSequenceId + * [HBASE-12218] - Make HBaseCommonTestingUtil#deleteDir try harder + +** Improvement + * [HBASE-10153] - improve VerifyReplication to compute BADROWS more accurately + * [HBASE-10411] - [Book] Add a kerberos 'request is a replay (34)' issue at troubleshooting section + * [HBASE-11796] - Add client support for atomic checkAndMutate + * [HBASE-11879] - Change TableInputFormatBase to take interface arguments + * [HBASE-11907] - Use the joni byte[] regex engine in place of j.u.regex in RegexStringComparator + * [HBASE-11948] - graceful_stop.sh should use hbase-daemon.sh when executed on the decomissioned node + * [HBASE-12010] - Use TableName.META_TABLE_NAME instead of indirectly from HTableDescriptor + * [HBASE-12011] - Add namespace column during display of user tables + * [HBASE-12013] - Make region_mover.rb support multiple regionservers per host + * [HBASE-12021] - Hbase shell does not respect the HBASE_OPTS set by the user in console + * [HBASE-12032] - Script to stop regionservers via RPC + * [HBASE-12049] - Help for alter command is a bit confusing + * [HBASE-12090] - Bytes: more Unsafe, more Faster + * [HBASE-12118] - Explain how to grant permission to a namespace in grant command usage + * [HBASE-12176] - WALCellCodec Encoders support for non-KeyValue Cells + * [HBASE-12212] - HBaseTestingUtility#waitUntilAllRegionsAssigned should wait for RegionStates + * [HBASE-12220] - Add hedgedReads and hedgedReadWins metrics + +** New Feature + * [HBASE-11990] - Make setting the start and stop row for a specific prefix easier + * [HBASE-11995] - Use Connection and ConnectionFactory where possible + * [HBASE-12127] - Move the core Connection creation functionality into ConnectionFactory + * [HBASE-12133] - Add FastLongHistogram for metric computation + * [HBASE-12143] - Minor fix for Table code + +** Task + * [HBASE-9004] - Fix Documentation around Minor compaction and ttl + * [HBASE-11692] - Document how and why to do a manual region split + * [HBASE-11730] - Document release managers for non-deprecated branches + * [HBASE-11761] - Add a FAQ item for updating a maven-managed application from 0.94 -> 0.96+ + * [HBASE-11960] - Provide a sample to show how to use Thrift client authentication + * [HBASE-11978] - Backport 'HBASE-7767 Get rid of ZKTable, and table enable/disable state in ZK' to 1.0 + * [HBASE-11981] - Document how to find the units of measure for a given HBase metric + +** Test + * [HBASE-11798] - TestBucketWriterThread may hang due to WriterThread stopping prematurely + * [HBASE-11838] - Enable PREFIX_TREE in integration tests + * [HBASE-12008] - Remove IntegrationTestImportTsv#testRunFromOutputCommitter + * [HBASE-12055] - TestBucketWriterThread hangs flakily based on timing + + +Release Notes - HBase - Version 0.99.0 9/22/2014 + +** Sub-task + * [HBASE-2251] - PE defaults to 1k rows - uncommon use case, and easy to hit benchmarks + * [HBASE-5175] - Add DoubleColumnInterpreter + * [HBASE-6873] - Clean up Coprocessor loading failure handling + * [HBASE-8541] - implement flush-into-stripes in stripe compactions + * [HBASE-9149] - javadoc cleanup of to reflect .META. rename to hbase:meta + * [HBASE-9261] - Add cp hooks after {start|close}RegionOperation + * [HBASE-9489] - Add cp hooks in online merge before and after setting PONR + * [HBASE-9846] - Integration test and LoadTestTool support for cell ACLs + * [HBASE-9858] - Integration test and LoadTestTool support for cell Visibility + * [HBASE-9889] - Make sure we clean up scannerReadPoints upon any exceptions + * [HBASE-9941] - The context ClassLoader isn't set while calling into a coprocessor + * [HBASE-9966] - Create IntegrationTest for Online Bloom Filter Change + * [HBASE-9977] - Define C interface of HBase Client Asynchronous APIs + * [HBASE-10043] - Fix Potential Resouce Leak in MultiTableInputFormatBase + * [HBASE-10094] - Add batching to HLogPerformanceEvaluation + * [HBASE-10110] - Fix Potential Resource Leak in StoreFlusher + * [HBASE-10124] - Make Sub Classes Static When Possible + * [HBASE-10143] - Clean up dead local stores in FSUtils + * [HBASE-10150] - Write attachment Id of tested patch into JIRA comment + * [HBASE-10156] - FSHLog Refactor (WAS -> Fix up the HBASE-8755 slowdown when low contention) + * [HBASE-10158] - Add sync rate histogram to HLogPE + * [HBASE-10169] - Batch coprocessor + * [HBASE-10297] - LoadAndVerify Integration Test for cell visibility + * [HBASE-10347] - HRegionInfo changes for adding replicaId and MetaEditor/MetaReader changes for region replicas + * [HBASE-10348] - HTableDescriptor changes for region replicas + * [HBASE-10350] - Master/AM/RegionStates changes to create and assign region replicas + * [HBASE-10351] - LoadBalancer changes for supporting region replicas + * [HBASE-10352] - Region and RegionServer changes for opening region replicas, and refreshing store files + * [HBASE-10354] - Add an API for defining consistency per request + * [HBASE-10355] - Failover RPC's from client using region replicas + * [HBASE-10356] - Failover RPC's for multi-get + * [HBASE-10357] - Failover RPC's for scans + * [HBASE-10359] - Master/RS WebUI changes for region replicas + * [HBASE-10361] - Enable/AlterTable support for region replicas + * [HBASE-10362] - HBCK changes for supporting region replicas + * [HBASE-10391] - Deprecate KeyValue#getBuffer + * [HBASE-10420] - Replace KV.getBuffer with KV.get{Row|Family|Qualifier|Value|Tags}Array + * [HBASE-10513] - Provide user documentation for region replicas + * [HBASE-10517] - NPE in MetaCache.clearCache() + * [HBASE-10519] - Add handling for swallowed InterruptedException thrown by Thread.sleep in rest related files + * [HBASE-10520] - Add handling for swallowed InterruptedException thrown by Thread.sleep in MiniZooKeeperCluster + * [HBASE-10521] - Add handling for swallowed InterruptedException thrown by Thread.sleep in RpcServer + * [HBASE-10522] - Correct wrong handling and add proper handling for swallowed InterruptedException thrown by Thread.sleep in client + * [HBASE-10523] - Correct wrong handling and add proper handling for swallowed InterruptedException thrown by Thread.sleep in util + * [HBASE-10524] - Correct wrong handling and add proper handling for swallowed InterruptedException thrown by Thread.sleep in regionserver + * [HBASE-10526] - Using Cell instead of KeyValue in HFileOutputFormat + * [HBASE-10529] - Make Cell extend Cloneable + * [HBASE-10530] - Add util methods in CellUtil + * [HBASE-10531] - Revisit how the key byte[] is passed to HFileScanner.seekTo and reseekTo + * [HBASE-10532] - Make KeyValueComparator in KeyValue to accept Cell instead of KeyValue. + * [HBASE-10550] - Register HBase tokens with ServiceLoader + * [HBASE-10561] - Forward port: HBASE-10212 New rpc metric: number of active handler + * [HBASE-10572] - Create an IntegrationTest for region replicas + * [HBASE-10573] - Use Netty 4 + * [HBASE-10616] - Integration test for multi-get calls + * [HBASE-10620] - LoadBalancer.needsBalance() should check for co-located region replicas as well + * [HBASE-10630] - NullPointerException in ConnectionManager$HConnectionImplementation.locateRegionInMeta() due to missing region info + * [HBASE-10633] - StoreFileRefresherChore throws ConcurrentModificationException sometimes + * [HBASE-10634] - Multiget doesn't fully work + * [HBASE-10648] - Pluggable Memstore + * [HBASE-10650] - Fix incorrect handling of IE that restores current thread's interrupt status within while/for loops in RegionServer + * [HBASE-10651] - Fix incorrect handling of IE that restores current thread's interrupt status within while/for loops in Replication + * [HBASE-10652] - Fix incorrect handling of IE that restores current thread's interrupt status within while/for loops in rpc + * [HBASE-10661] - TestStochasticLoadBalancer.testRegionReplicationOnMidClusterWithRacks() is flaky + * [HBASE-10672] - Table snapshot should handle tables whose REGION_REPLICATION is greater than one + * [HBASE-10680] - Check if the block keys, index keys can be used as Cells instead of byte[] + * [HBASE-10688] - Add a draining_node script to manage nodes in draining mode + * [HBASE-10691] - test-patch.sh should continue even if compilation against hadoop 1.0 / 1.1 fails + * [HBASE-10697] - Convert TestSimpleTotalOrderPartitioner to junit4 test + * [HBASE-10701] - Cache invalidation improvements from client side + * [HBASE-10704] - BaseLoadBalancer#roundRobinAssignment() may add same region to assignment plan multiple times + * [HBASE-10717] - TestFSHDFSUtils#testIsSameHdfs fails with IllegalArgumentException running against hadoop 2.3 + * [HBASE-10723] - Convert TestExplicitColumnTracker to junit4 test + * [HBASE-10729] - Enable table doesn't balance out replicas evenly if the replicas were unassigned earlier + * [HBASE-10734] - Fix RegionStates.getRegionAssignments to not add duplicate regions + * [HBASE-10741] - Deprecate HTablePool and HTableFactory + * [HBASE-10743] - Replica map update is problematic in RegionStates + * [HBASE-10750] - Pluggable MemStoreLAB + * [HBASE-10778] - Unique keys accounting in MultiThreadedReader is incorrect + * [HBASE-10779] - Doc hadoop1 deprecated in 0.98 and NOT supported in hbase 1.0 + * [HBASE-10781] - Remove hadoop-one-compat module and all references to hadoop1 + * [HBASE-10791] - Add integration test to demonstrate performance improvement + * [HBASE-10794] - multi-get should handle replica location missing from cache + * [HBASE-10796] - Set default log level as INFO + * [HBASE-10801] - Ensure DBE interfaces can work with Cell + * [HBASE-10810] - LoadTestTool should share the connection and connection pool + * [HBASE-10815] - Master regionserver should be rolling-upgradable + * [HBASE-10817] - Add some tests on a real cluster for replica: multi master, replication + * [HBASE-10818] - Add integration test for bulkload with replicas + * [HBASE-10822] - Thread local addendum to HBASE-10656 Counter + * [HBASE-10841] - Scan,Get,Put,Delete,etc setters should consistently return this + * [HBASE-10855] - Enable hfilev3 by default + * [HBASE-10858] - TestRegionRebalancing is failing + * [HBASE-10859] - Use HFileLink in opening region files from secondaries + * [HBASE-10888] - Enable distributed log replay as default + * [HBASE-10915] - Decouple region closing (HM and HRS) from ZK + * [HBASE-10918] - [VisibilityController] System table backed ScanLabelGenerator + * [HBASE-10929] - Change ScanQueryMatcher to use Cells instead of KeyValue. + * [HBASE-10930] - Change Filters and GetClosestRowBeforeTracker to work with Cells + * [HBASE-10957] - HBASE-10070: HMaster can abort with NPE in #rebuildUserRegions + * [HBASE-10962] - Decouple region opening (HM and HRS) from ZK + * [HBASE-10963] - Refactor cell ACL tests + * [HBASE-10972] - OOBE in prefix key encoding + * [HBASE-10985] - Decouple Split Transaction from Zookeeper + * [HBASE-10993] - Deprioritize long-running scanners + * [HBASE-11025] - Infrastructure for pluggable consensus service + * [HBASE-11027] - Remove kv.isDeleteXX() and related methods and use CellUtil apis. + * [HBASE-11053] - Change DeleteTracker APIs to work with Cell + * [HBASE-11054] - Create new hook in StoreScanner to help user creating his own delete tracker + * [HBASE-11059] - ZK-less region assignment + * [HBASE-11069] - Decouple region merging from ZooKeeper + * [HBASE-11072] - Abstract WAL splitting from ZK + * [HBASE-11077] - [AccessController] Restore compatible early-out access denial + * [HBASE-11088] - Support Visibility Expression Deletes in Shell + * [HBASE-11092] - Server interface should have method getConsensusProvider() + * [HBASE-11094] - Distributed log replay is incompatible for rolling restarts + * [HBASE-11098] - Improve documentation around our blockcache options + * [HBASE-11101] - Documentation review + * [HBASE-11102] - Document JDK versions supported by each release + * [HBASE-11108] - Split ZKTable into interface and implementation + * [HBASE-11109] - flush region sequence id may not be larger than all edits flushed + * [HBASE-11135] - Change region sequenceid generation so happens earlier in the append cycle rather than just before added to file + * [HBASE-11140] - LocalHBaseCluster should create ConsensusProvider per each server + * [HBASE-11161] - Provide example of POJO encoding with protobuf + * [HBASE-11171] - More doc improvements on block cache options + * [HBASE-11214] - Fixes for scans on a replicated table + * [HBASE-11229] - Change block cache percentage metrics to be doubles rather than ints + * [HBASE-11280] - Document distributed log replay and distributed log splitting + * [HBASE-11307] - Deprecate SlabCache + * [HBASE-11318] - Classes in security subpackages missing @InterfaceAudience annotations. + * [HBASE-11332] - Fix for metas location cache from HBASE-10785 + * [HBASE-11367] - Pluggable replication endpoint + * [HBASE-11372] - Remove SlabCache + * [HBASE-11384] - [Visibility Controller]Check for users covering authorizations for every mutation + * [HBASE-11395] - Add logging for HBase table operations + * [HBASE-11471] - Move TableStateManager and ZkTableStateManager and Server to hbase-server + * [HBASE-11483] - Check the rest of the book for new XML validity errors and fix + * [HBASE-11508] - Document changes to IPC config parameters from HBASE-11492 + * [HBASE-11511] - Write flush events to WAL + * [HBASE-11512] - Write region open/close events to WAL + * [HBASE-11520] - Simplify offheap cache config by removing the confusing "hbase.bucketcache.percentage.in.combinedcache" + * [HBASE-11559] - Add dumping of DATA block usage to the BlockCache JSON report. + * [HBASE-11572] - Add support for doing get/scans against a particular replica_id + * [HBASE-11573] - Report age on eviction + * [HBASE-11610] - Enhance remote meta updates + * [HBASE-11651] - Add conf which disables MetaMigrationConvertingToPB check (for experts only) + * [HBASE-11722] - Document new shortcut commands introduced by HBASE-11649 + * [HBASE-11734] - Document changed behavior of hbase.hstore.time.to.purge.deletes + * [HBASE-11736] - Document SKIP_FLUSH snapshot option + * [HBASE-11737] - Document callQueue improvements from HBASE-11355 and HBASE-11724 + * [HBASE-11739] - Document blockCache contents report in the UI + * [HBASE-11740] - RegionStates.getRegionAssignments() gets stuck on clone + * [HBASE-11752] - Document blockcache prefetch option + * [HBASE-11753] - Document HBASE_SHELL_OPTS environment variable + * [HBASE-11781] - Document new TableMapReduceUtil scanning options + * [HBASE-11784] - Document global configuration for maxVersion + * [HBASE-11822] - Convert EnvironmentEdge#getCurrentTimeMillis to getCurrentTime + * [HBASE-11919] - Remove the deprecated pre/postGet CP hook + * [HBASE-11923] - Potential race condition in RecoverableZookeeper.checkZk() + * [HBASE-11934] - Support KeyValueCodec to encode non KeyValue cells. + * [HBASE-11941] - Rebuild site because of major structural changes to HTML + * [HBASE-11963] - Synchronize peer cluster replication connection attempts + +** Brainstorming + * [HBASE-9507] - Promote methods of WALActionsListener to WALObserver + * [HBASE-11209] - Increase the default value for hbase.hregion.memstore.block.multipler from 2 to 4 + +** Bug + * [HBASE-3787] - Increment is non-idempotent but client retries RPC + * [HBASE-4931] - CopyTable instructions could be improved. + * [HBASE-5356] - region_mover.rb can hang if table region it belongs to is deleted. + * [HBASE-6506] - Setting CACHE_BLOCKS to false in an hbase shell scan doesn't work + * [HBASE-6642] - enable_all,disable_all,drop_all can call "list" command with regex directly. + * [HBASE-6701] - Revisit thrust of paragraph on splitting + * [HBASE-7226] - HRegion.checkAndMutate uses incorrect comparison result for <, <=, > and >= + * [HBASE-7963] - HBase VerifyReplication not working when security enabled + * [HBASE-8112] - Deprecate HTable#batch(final List) + * [HBASE-8269] - Fix data locallity documentation. + * [HBASE-8304] - Bulkload fails to remove files if fs.default.name / fs.defaultFS is configured without default port + * [HBASE-8529] - checkOpen is missing from multi, mutate, get and multiGet etc. + * [HBASE-8701] - distributedLogReplay need to apply wal edits in the receiving order of those edits + * [HBASE-8713] - [hadoop1] Log spam each time the WAL is rolled + * [HBASE-8803] - region_mover.rb should move multiple regions at a time + * [HBASE-8817] - Enhance The Apache HBase Reference Guide + * [HBASE-9151] - HBCK cannot fix when meta server znode deleted, this can happen if all region servers stopped and there are no logs to split. + * [HBASE-9292] - Syncer fails but we won't go down + * [HBASE-9294] - NPE in /rs-status during RS shutdown + * [HBASE-9346] - HBCK should provide an option to check if regions boundaries are the same in META and in stores. + * [HBASE-9445] - Snapshots should create column family dirs for empty regions + * [HBASE-9473] - Change UI to list 'system tables' rather than 'catalog tables'. + * [HBASE-9485] - TableOutputCommitter should implement recovery if we don't want jobs to start from 0 on RM restart + * [HBASE-9708] - Improve Snapshot Name Error Message + * [HBASE-9721] - RegionServer should not accept regionOpen RPC intended for another(previous) server + * [HBASE-9745] - Append HBASE_CLASSPATH to end of Java classpath and use another env var for prefix + * [HBASE-9746] - RegionServer can't start when replication tries to replicate to an unknown host + * [HBASE-9754] - Eliminate threadlocal from MVCC code + * [HBASE-9778] - Add hint to ExplicitColumnTracker to avoid seeking + * [HBASE-9990] - HTable uses the conf for each "newCaller" + * [HBASE-10018] - Remove region location prefetching + * [HBASE-10061] - TableMapReduceUtil.findOrCreateJar calls updateMap(null, ) resulting in thrown NPE + * [HBASE-10069] - Potential duplicate calls to log#appendNoSync() in HRegion#doMiniBatchMutation() + * [HBASE-10073] - Revert HBASE-9718 (Add a test scope dependency on org.slf4j:slf4j-api to hbase-client) + * [HBASE-10079] - Race in TableName cache + * [HBASE-10080] - Unnecessary call to locateRegion when creating an HTable instance + * [HBASE-10084] - [WINDOWS] bin\hbase.cmd should allow whitespaces in java.library.path and classpath + * [HBASE-10087] - Store should be locked during a memstore snapshot + * [HBASE-10090] - Master could hang in assigning meta + * [HBASE-10097] - Remove a region name string creation in HRegion#nextInternal + * [HBASE-10098] - [WINDOWS] pass in native library directory from hadoop for unit tests + * [HBASE-10099] - javadoc warning introduced by LabelExpander 188: warning - @return tag has no arguments + * [HBASE-10101] - testOfflineRegionReAssginedAfterMasterRestart times out sometimes. + * [HBASE-10103] - TestNodeHealthCheckChore#testRSHealthChore: Stoppable must have been stopped + * [HBASE-10107] - [JDK7] TestHBaseSaslRpcClient.testHBaseSaslRpcClientCreation failing on Jenkins + * [HBASE-10108] - NullPointerException thrown while use Canary with '-regionserver' option + * [HBASE-10112] - Hbase rest query params for maxVersions and maxValues are not parsed + * [HBASE-10114] - _scan_internal() in table.rb should accept argument that specifies reverse scan + * [HBASE-10117] - Avoid synchronization in HRegionScannerImpl.isFilterDone + * [HBASE-10118] - Major compact keeps deletes with future timestamps + * [HBASE-10120] - start-hbase.sh doesn't respect --config in non-distributed mode + * [HBASE-10123] - Change default ports; move them out of linux ephemeral port range + * [HBASE-10132] - sun.security.pkcs11.wrapper.PKCS11Exception: CKR_ARGUMENTS_BAD + * [HBASE-10135] - Remove ? extends from HLogSplitter#getOutputCounts + * [HBASE-10137] - GeneralBulkAssigner with retain assignment plan can be used in EnableTableHandler to bulk assign the regions + * [HBASE-10138] - incorrect or confusing test value is used in block caches + * [HBASE-10142] - TestLogRolling#testLogRollOnDatanodeDeath test failure + * [HBASE-10146] - Bump HTrace version to 2.04 + * [HBASE-10148] - [VisibilityController] Tolerate regions in recovery + * [HBASE-10149] - TestZKPermissionsWatcher.testPermissionsWatcher test failure + * [HBASE-10155] - HRegion isRecovering state is wrongly coming in postOpen hook + * [HBASE-10161] - [AccessController] Tolerate regions in recovery + * [HBASE-10163] - Example Thrift DemoClient is flaky + * [HBASE-10176] - Canary#sniff() should close the HTable instance + * [HBASE-10178] - Potential null object dereference in TablePermission#equals() + * [HBASE-10179] - HRegionServer underreports readRequestCounts by 1 under certain conditions + * [HBASE-10182] - Potential null object deference in AssignmentManager#handleRegion() + * [HBASE-10186] - region_mover.rb broken because ServerName constructor is changed to private + * [HBASE-10187] - AccessController#preOpen - Include 'labels' table also into special tables list. + * [HBASE-10193] - Cleanup HRegion if one of the store fails to open at region initialization + * [HBASE-10194] - [Usability]: Instructions in CompactionTool no longer accurate because of namespaces + * [HBASE-10196] - Enhance HBCK to understand the case after online region merge + * [HBASE-10205] - ConcurrentModificationException in BucketAllocator + * [HBASE-10207] - ZKVisibilityLabelWatcher : Populate the labels cache on startup + * [HBASE-10210] - during master startup, RS can be you-are-dead-ed by master in error + * [HBASE-10215] - TableNotFoundException should be thrown after removing stale znode in ETH + * [HBASE-10219] - HTTPS support for HBase in RegionServerListTmpl.jamon + * [HBASE-10220] - Put all test service principals into the superusers list + * [HBASE-10221] - Region from coprocessor invocations can be null on failure + * [HBASE-10223] - [VisibilityController] cellVisibility presence check on Delete mutation is wrong + * [HBASE-10225] - Bug in calls to RegionObsever.postScannerFilterRow + * [HBASE-10226] - [AccessController] Namespace grants not always checked + * [HBASE-10231] - Potential NPE in HBaseFsck#checkMetaRegion() + * [HBASE-10232] - Remove native profile from hbase-shell + * [HBASE-10233] - VisibilityController is too chatty at DEBUG level + * [HBASE-10249] - TestReplicationSyncUpTool fails because failover takes too long + * [HBASE-10251] - Restore API Compat for PerformanceEvaluation.generateValue() + * [HBASE-10260] - Canary Doesn't pick up Configuration properly. + * [HBASE-10264] - [MapReduce]: CompactionTool in mapred mode is missing classes in its classpath + * [HBASE-10267] - TestNamespaceCommands occasionally fails + * [HBASE-10268] - TestSplitLogWorker occasionally fails + * [HBASE-10271] - [regression] Cannot use the wildcard address since HBASE-9593 + * [HBASE-10272] - Cluster becomes nonoperational if the node hosting the active Master AND ROOT/META table goes offline + * [HBASE-10274] - MiniZookeeperCluster should close ZKDatabase when shutdown ZooKeeperServers + * [HBASE-10284] - Build broken with svn 1.8 + * [HBASE-10292] - TestRegionServerCoprocessorExceptionWithAbort fails occasionally + * [HBASE-10298] - TestIOFencing occasionally fails + * [HBASE-10302] - Fix rat check issues in hbase-native-client. + * [HBASE-10304] - Running an hbase job jar: IllegalAccessError: class com.google.protobuf.ZeroCopyLiteralByteString cannot access its superclass com.google.protobuf.LiteralByteString + * [HBASE-10307] - IntegrationTestIngestWithEncryption assumes localhost cluster + * [HBASE-10310] - ZNodeCleaner session expired for /hbase/master + * [HBASE-10312] - Flooding the cluster with administrative actions leads to collapse + * [HBASE-10313] - Duplicate servlet-api jars in hbase 0.96.0 + * [HBASE-10315] - Canary shouldn't exit with 3 if there is no master running. + * [HBASE-10316] - Canary#RegionServerMonitor#monitorRegionServers() should close the scanner returned by table.getScanner() + * [HBASE-10317] - getClientPort method of MiniZooKeeperCluster does not always return the correct value + * [HBASE-10318] - generate-hadoopX-poms.sh expects the version to have one extra '-' + * [HBASE-10320] - Avoid ArrayList.iterator() ExplicitColumnTracker + * [HBASE-10321] - CellCodec has broken the 96 client to 98 server compatibility + * [HBASE-10322] - Strip tags from KV while sending back to client on reads + * [HBASE-10326] - Super user should be able scan all the cells irrespective of the visibility labels + * [HBASE-10327] - Remove remove(K, V) from type PoolMap + * [HBASE-10329] - Fail the writes rather than proceeding silently to prevent data loss when AsyncSyncer encounters null writer and its writes aren't synced by other Asyncer + * [HBASE-10330] - TableInputFormat/TableRecordReaderImpl leaks HTable + * [HBASE-10332] - Missing .regioninfo file during daughter open processing + * [HBASE-10333] - Assignments are not retained on a cluster start + * [HBASE-10334] - RegionServer links in table.jsp is broken + * [HBASE-10335] - AuthFailedException in zookeeper may block replication forever + * [HBASE-10336] - Remove deprecated usage of Hadoop HttpServer in InfoServer + * [HBASE-10337] - HTable.get() uninteruptible + * [HBASE-10338] - Region server fails to start with AccessController coprocessor if installed into RegionServerCoprocessorHost + * [HBASE-10339] - Mutation::getFamilyMap method was lost in 98 + * [HBASE-10349] - Table became unusable when master balanced its region after table was dropped + * [HBASE-10365] - HBaseFsck should clean up connection properly when repair is completed + * [HBASE-10370] - Compaction in out-of-date Store causes region split failure + * [HBASE-10371] - Compaction creates empty hfile, then selects this file for compaction and creates empty hfile and over again + * [HBASE-10375] - hbase-default.xml hbase.status.multicast.address.port does not match code + * [HBASE-10384] - Failed to increment serveral columns in one Increment + * [HBASE-10392] - Correct references to hbase.regionserver.global.memstore.upperLimit + * [HBASE-10397] - Fix findbugs introduced from HBASE-9426 + * [HBASE-10400] - [hbck] Continue if region dir missing on region merge attempt + * [HBASE-10401] - [hbck] perform overlap group merges in parallel + * [HBASE-10407] - String Format Exception + * [HBASE-10412] - Distributed log replay : Cell tags getting missed + * [HBASE-10413] - Tablesplit.getLength returns 0 + * [HBASE-10417] - index is not incremented in PutSortReducer#reduce() + * [HBASE-10422] - ZeroCopyLiteralByteString.zeroCopyGetBytes has an unusable prototype and conflicts with AsyncHBase + * [HBASE-10426] - user_permission in security.rb calls non-existent UserPermission#getTable method + * [HBASE-10428] - Test jars should have scope test + * [HBASE-10429] - Make Visibility Controller to throw a better msg if it is of type RegionServerCoprocessor + * [HBASE-10431] - Rename com.google.protobuf.ZeroCopyLiteralByteString + * [HBASE-10432] - Rpc retries non-recoverable error + * [HBASE-10433] - SecureProtobufWALReader does not handle unencrypted WALs if configured to encrypt + * [HBASE-10434] - Store Tag compression information for a WAL in its header + * [HBASE-10435] - Lower the log level of Canary region server match + * [HBASE-10436] - restore regionserver lists removed from hbase 0.96+ jmx + * [HBASE-10438] - NPE from LRUDictionary when size reaches the max init value + * [HBASE-10441] - [docs] nit default max versions is now 1 instead of 3 after HBASE-8450 + * [HBASE-10442] - prepareDelete() isn't called before doPreMutationHook for a row deletion case + * [HBASE-10443] - IndexOutOfBoundExceptions when processing compressed tags in HFile + * [HBASE-10446] - Backup master gives Error 500 for debug dump + * [HBASE-10447] - Memstore flusher scans storefiles also when the scanner heap gets reset + * [HBASE-10448] - ZKUtil create and watch methods don't set watch in some cases + * [HBASE-10449] - Wrong execution pool configuration in HConnectionManager + * [HBASE-10451] - Enable back Tag compression on HFiles + * [HBASE-10452] - Fix potential bugs in exception handlers + * [HBASE-10454] - Tags presence file info can be wrong in HFiles when PrefixTree encoding is used + * [HBASE-10455] - cleanup InterruptedException management + * [HBASE-10456] - Balancer should not run if it's just turned off. + * [HBASE-10458] - Typo in book chapter 9 architecture.html + * [HBASE-10459] - Broken link F.1. HBase Videos + * [HBASE-10460] - Return value of Scan#setSmall() should be void + * [HBASE-10461] - table.close() in TableEventHandler#reOpenAllRegions() should be enclosed in finally block + * [HBASE-10469] - Hbase book client.html has a broken link + * [HBASE-10470] - Import generates huge log file while importing large amounts of data + * [HBASE-10472] - Manage the interruption in ZKUtil#getData + * [HBASE-10476] - HBase Master log grows very fast after stopped hadoop (due to connection exception) + * [HBASE-10477] - Regression from HBASE-10337 + * [HBASE-10478] - Hbase book presentations page has broken link + * [HBASE-10481] - API Compatibility JDiff script does not properly handle arguments in reverse order + * [HBASE-10482] - ReplicationSyncUp doesn't clean up its ZK, needed for tests + * [HBASE-10485] - PrefixFilter#filterKeyValue() should perform filtering on row key + * [HBASE-10486] - ProtobufUtil Append & Increment deserialization lost cell level timestamp + * [HBASE-10488] - 'mvn site' is broken due to org.apache.jasper.JspC not found + * [HBASE-10490] - Simplify RpcClient code + * [HBASE-10493] - InclusiveStopFilter#filterKeyValue() should perform filtering on row key + * [HBASE-10495] - upgrade script is printing usage two times with help option. + * [HBASE-10500] - Some tools OOM when BucketCache is enabled + * [HBASE-10501] - Improve IncreasingToUpperBoundRegionSplitPolicy to avoid too many regions + * [HBASE-10506] - Fail-fast if client connection is lost before the real call be executed in RPC layer + * [HBASE-10510] - HTable is not closed in LoadTestTool#loadTable() + * [HBASE-10514] - Forward port HBASE-10466, possible data loss when failed flushes + * [HBASE-10516] - Refactor code where Threads.sleep is called within a while/for loop + * [HBASE-10525] - Allow the client to use a different thread for writing to ease interrupt + * [HBASE-10533] - commands.rb is giving wrong error messages on exceptions + * [HBASE-10534] - Rowkey in TsvImporterTextMapper initializing with wrong length + * [HBASE-10537] - Let the ExportSnapshot mapper fail and retry on error + * [HBASE-10539] - HRegion.addAndGetGlobalMemstoreSize returns previous size + * [HBASE-10545] - RS Hangs waiting on region to close on shutdown; has to timeout before can go down + * [HBASE-10546] - Two scanner objects are open for each hbase map task but only one scanner object is closed + * [HBASE-10547] - TestFixedLengthWrapper#testReadWrite occasionally fails with the IBM JDK + * [HBASE-10548] - Correct commons-math dependency version + * [HBASE-10549] - When there is a hole, LoadIncrementalHFiles will hang in an infinite loop. + * [HBASE-10552] - HFilePerformanceEvaluation.GaussianRandomReadBenchmark fails sometimes. + * [HBASE-10556] - Possible data loss due to non-handled DroppedSnapshotException for user-triggered flush from client/shell + * [HBASE-10563] - Set name for FlushHandler thread + * [HBASE-10564] - HRegionServer.nextLong should be removed since it's not used anywhere, or should be used somewhere it meant to + * [HBASE-10565] - FavoredNodesPlan accidentally uses an internal Netty type + * [HBASE-10566] - cleanup rpcTimeout in the client + * [HBASE-10567] - Add overwrite manifest option to ExportSnapshot + * [HBASE-10575] - ReplicationSource thread can't be terminated if it runs into the loop to contact peer's zk ensemble and fails continuously + * [HBASE-10579] - [Documentation]: ExportSnapshot tool package incorrectly documented + * [HBASE-10580] - IntegrationTestingUtility#restoreCluster leak resource when running in a mini cluster mode + * [HBASE-10581] - ACL znode are left without PBed during upgrading hbase0.94* to hbase0.96+ + * [HBASE-10582] - 0.94->0.96 Upgrade: ACL can't be repopulated when ACL table contains row for table '-ROOT' or '.META.' + * [HBASE-10585] - Avoid early creation of Node objects in LRUDictionary.BidirectionalLRUMap + * [HBASE-10586] - hadoop2-compat IPC metric registred twice + * [HBASE-10587] - Master metrics clusterRequests is wrong + * [HBASE-10593] - FileInputStream in JenkinsHash#main() is never closed + * [HBASE-10594] - Speed up TestRestoreSnapshotFromClient + * [HBASE-10598] - Written data can not be read out because MemStore#timeRangeTracker might be updated concurrently + * [HBASE-10600] - HTable#batch() should perform validation on empty Put + * [HBASE-10604] - Fix parseArgs javadoc + * [HBASE-10606] - Bad timeout in RpcRetryingCaller#callWithRetries w/o parameters + * [HBASE-10608] - Acquire the FS Delegation Token for Secure ExportSnapshot + * [HBASE-10611] - Description for hbase:acl table is wrong on master-status#catalogTables + * [HBASE-10614] - Master could not be stopped + * [HBASE-10618] - User should not be allowed to disable/drop visibility labels table + * [HBASE-10621] - Unable to grant user permission to namespace + * [HBASE-10622] - Improve log and Exceptions in Export Snapshot + * [HBASE-10624] - Fix 2 new findbugs warnings introduced by HBASE-10598 + * [HBASE-10627] - A logic mistake in HRegionServer isHealthy + * [HBASE-10631] - Avoid extra seek on FileLink open + * [HBASE-10632] - Region lost in limbo after ArrayIndexOutOfBoundsException during assignment + * [HBASE-10637] - rpcClient: Setup the iostreams when writing + * [HBASE-10639] - Unload script displays wrong counts (off by one) when unloading regions + * [HBASE-10644] - TestSecureExportSnapshot#testExportFileSystemState fails on hadoop-1 + * [HBASE-10656] - high-scale-lib's Counter depends on Oracle (Sun) JRE, and also has some bug + * [HBASE-10660] - MR over snapshots can OOM when alternative blockcache is enabled + * [HBASE-10662] - RegionScanner is never closed if the region has been moved-out or re-opened when performing scan request + * [HBASE-10665] - TestCompaction and TestCompactionWithCoprocessor run too long + * [HBASE-10666] - TestMasterCoprocessorExceptionWithAbort hangs at shutdown + * [HBASE-10668] - TestExportSnapshot runs too long + * [HBASE-10669] - [hbck tool] Usage is wrong for hbck tool for -sidelineCorruptHfiles option + * [HBASE-10675] - IntegrationTestIngestWithACL should allow User to be passed as Parameter + * [HBASE-10677] - boundaries check in hbck throwing IllegalArgumentException + * [HBASE-10679] - Both clients get wrong scan results if the first scanner expires and the second scanner is created with the same scannerId on the same region + * [HBASE-10682] - region_mover.rb throws "can't convert nil into String" for regions moved + * [HBASE-10685] - [WINDOWS] TestKeyStoreKeyProvider fails on windows + * [HBASE-10686] - [WINDOWS] TestStripeStoreFileManager fails on windows + * [HBASE-10687] - Fix description about HBaseLocalFileSpanReceiver in reference manual + * [HBASE-10692] - The Multi TableMap job don't support the security HBase cluster + * [HBASE-10694] - TableSkewCostFunction#cost() casts integral division result to double + * [HBASE-10705] - CompactionRequest#toString() may throw NullPointerException + * [HBASE-10706] - Disable writeToWal in tests where possible + * [HBASE-10714] - SyncFuture hangs when sequence is 0 + * [HBASE-10715] - TimeRange has a poorly formatted error message + * [HBASE-10716] - [Configuration]: hbase.regionserver.region.split.policy should be part of hbase-default.xml + * [HBASE-10718] - TestHLogSplit fails when it sets a KV size to be negative + * [HBASE-10720] - rpcClient: Wrong log level when closing the connection + * [HBASE-10726] - Fix java.lang.ArrayIndexOutOfBoundsException in StochasticLoadBalancer$LocalityBasedCandidateGenerator + * [HBASE-10731] - Fix environment variables typos in scripts + * [HBASE-10735] - [WINDOWS] Set -XX:MaxPermSize for unit tests + * [HBASE-10736] - Fix Javadoc warnings introduced in HBASE-10169 + * [HBASE-10737] - HConnectionImplementation should stop RpcClient on close + * [HBASE-10738] - AssignmentManager should shut down executors on stop + * [HBASE-10739] - RS web UI NPE if master shuts down sooner + * [HBASE-10745] - Access ShutdownHook#fsShutdownHooks should be synchronized + * [HBASE-10749] - CellComparator.compareStatic() compares type wrongly + * [HBASE-10751] - TestHRegion testWritesWhileScanning occasional fail since HBASE-10514 went in + * [HBASE-10755] - MetricsRegionSourceImpl creates metrics that start with a lower case + * [HBASE-10760] - Wrong methods' names in ClusterLoadState class + * [HBASE-10762] - clone_snapshot doesn't check for missing namespace + * [HBASE-10766] - SnapshotCleaner allows to delete referenced files + * [HBASE-10770] - Don't exit from the Canary daemon mode if no regions are present + * [HBASE-10792] - RingBufferTruck does not release its payload + * [HBASE-10793] - AuthFailed as a valid zookeeper state + * [HBASE-10799] - [WINDOWS] TestImportTSVWithVisibilityLabels.testBulkOutputWithTsvImporterTextMapper fails on windows + * [HBASE-10802] - CellComparator.compareStaticIgnoreMvccVersion compares type wrongly + * [HBASE-10804] - Add a validations step to ExportSnapshot + * [HBASE-10805] - Speed up KeyValueHeap.next() a bit + * [HBASE-10806] - Two protos missing in hbase-protocol/pom.xml + * [HBASE-10809] - HBaseAdmin#deleteTable fails when META region happen to move around same time + * [HBASE-10814] - RpcClient: some calls can get stuck when connection is closing + * [HBASE-10825] - Add copy-from option to ExportSnapshot + * [HBASE-10829] - Flush is skipped after log replay if the last recovered edits file is skipped + * [HBASE-10830] - Integration test MR jobs attempt to load htrace jars from the wrong location + * [HBASE-10831] - IntegrationTestIngestWithACL is not setting up LoadTestTool correctly + * [HBASE-10833] - Region assignment may fail during cluster start up + * [HBASE-10838] - Insufficient AccessController covering permission check + * [HBASE-10839] - NullPointerException in construction of RegionServer in Security Cluster + * [HBASE-10840] - Fix findbug warn induced by HBASE-10569 + * [HBASE-10845] - Memstore snapshot size isn't updated in DefaultMemStore#rollback() + * [HBASE-10846] - Links between active and backup masters are broken + * [HBASE-10848] - Filter SingleColumnValueFilter combined with NullComparator does not work + * [HBASE-10849] - Fix increased javadoc warns + * [HBASE-10850] - essential column family optimization is broken + * [HBASE-10851] - Wait for regionservers to join the cluster + * [HBASE-10853] - NPE in RSRpcServices.get on trunk + * [HBASE-10854] - [VisibilityController] Apply MAX_VERSIONS from schema or request when scanning + * [HBASE-10860] - Insufficient AccessController covering permission check + * [HBASE-10862] - Update config field names in hbase-default.xml description for hbase.hregion.memstore.block.multiplier + * [HBASE-10863] - Scan doesn't return rows for user who has authorization by visibility label in secure deployment + * [HBASE-10864] - Spelling nit + * [HBASE-10890] - ExportSnapshot needs to add acquired token to job + * [HBASE-10895] - unassign a region fails due to the hosting region server is in FailedServerList + * [HBASE-10897] - On master start, deadlock if refresh UI + * [HBASE-10899] - [AccessController] Apply MAX_VERSIONS from schema or request when scanning + * [HBASE-10903] - HBASE-10740 regression; cannot pass commands for zk to run + * [HBASE-10917] - Fix hbase book "Tests" page + * [HBASE-10922] - Log splitting status should always be closed + * [HBASE-10931] - Enhance logs + * [HBASE-10941] - default for max version isn't updated in doc after change on 0.96 + * [HBASE-10948] - Fix hbase table file 'x' mode + * [HBASE-10949] - Reversed scan could hang + * [HBASE-10954] - Fix TestCloseRegionHandler.testFailedFlushAborts + * [HBASE-10955] - HBCK leaves the region in masters in-memory RegionStates if region hdfs dir is lost + * [HBASE-10958] - [dataloss] Bulk loading with seqids can prevent some log entries from being replayed + * [HBASE-10964] - Delete mutation is not consistent with Put wrt timestamp + * [HBASE-10966] - RowCounter misinterprets column names that have colons in their qualifier + * [HBASE-10967] - CatalogTracker.waitForMeta should not wait indefinitely silently + * [HBASE-10968] - Null check in TableSnapshotInputFormat#TableSnapshotRegionRecordReader#initialize() is redundant + * [HBASE-10970] - [AccessController] Issues with covering cell permission checks + * [HBASE-10976] - Start CatalogTracker after cluster ID is available + * [HBASE-10979] - Fix AnnotationReadingPriorityFunction "scan" handling + * [HBASE-10995] - Fix resource leak related to unclosed HBaseAdmin + * [HBASE-11005] - Remove dead code in HalfStoreFileReader#getScanner#seekBefore() + * [HBASE-11009] - We sync every hbase:meta table write twice + * [HBASE-11011] - Avoid extra getFileStatus() calls on Region startup + * [HBASE-11012] - InputStream is not properly closed in two methods of JarFinder + * [HBASE-11018] - ZKUtil.getChildDataAndWatchForNewChildren() will not return null as indicated + * [HBASE-11028] - FSLog: Avoid an extra sync if the current transaction is already sync'd + * [HBASE-11030] - HBaseTestingUtility.getMiniHBaseCluster should be able to return null + * [HBASE-11036] - Online schema change with region merge may cause data loss + * [HBASE-11038] - Filtered scans can bypass metrics collection + * [HBASE-11049] - HBase WALPlayer needs to add credentials to job to play to table + * [HBASE-11052] - Sending random data crashes thrift service + * [HBASE-11055] - Extends the sampling size + * [HBASE-11064] - Odd behaviors of TableName for empty namespace + * [HBASE-11081] - Trunk Master won't start; looking for Constructor that takes conf only + * [HBASE-11082] - Potential unclosed TraceScope in FSHLog#replaceWriter() + * [HBASE-11096] - stop method of Master and RegionServer coprocessor is not invoked + * [HBASE-11112] - PerformanceEvaluation should document --multiGet option on its printUsage. + * [HBASE-11117] - [AccessController] checkAndPut/Delete hook should check only Read permission + * [HBASE-11118] - non environment variable solution for "IllegalAccessError: class com.google.protobuf.ZeroCopyLiteralByteString cannot access its superclass com.google.protobuf.LiteralByteString" + * [HBASE-11120] - Update documentation about major compaction algorithm + * [HBASE-11133] - Add an option to skip snapshot verification after Export + * [HBASE-11139] - BoundedPriorityBlockingQueue#poll() should check the return value from awaitNanos() + * [HBASE-11143] - Improve replication metrics + * [HBASE-11149] - Wire encryption is broken + * [HBASE-11150] - Images in website are broken + * [HBASE-11155] - Fix Validation Errors in Ref Guide + * [HBASE-11162] - RegionServer webui uses the default master info port irrespective of the user configuration. + * [HBASE-11168] - [docs] Remove references to RowLocks in post 0.96 docs. + * [HBASE-11169] - nit: fix incorrect javadoc in OrderedBytes about BlobVar and BlobCopy + * [HBASE-11176] - Make /src/main/xslt/configuration_to_docbook_section.xsl produce better Docbook + * [HBASE-11177] - 'hbase.rest.filter.classes' exists in hbase-default.xml twice + * [HBASE-11185] - Parallelize Snapshot operations + * [HBASE-11186] - Improve TestExportSnapshot verifications + * [HBASE-11189] - Subprocedure should be marked as complete upon failure + * [HBASE-11190] - Fix easy typos in documentation + * [HBASE-11194] - [AccessController] issue with covering permission check in case of concurrent op on same row + * [HBASE-11196] - Update description of -ROOT- in ref guide + * [HBASE-11202] - Cleanup on HRegion class + * [HBASE-11212] - Fix increment index in KeyValueSortReducer + * [HBASE-11215] - Deprecate void setAutoFlush(boolean autoFlush, boolean clearBufferOnFail) + * [HBASE-11217] - Race between SplitLogManager task creation + TimeoutMonitor + * [HBASE-11218] - Data loss in HBase standalone mode + * [HBASE-11226] - Document and increase the default value for hbase.hstore.flusher.count + * [HBASE-11234] - FastDiffDeltaEncoder#getFirstKeyInBlock returns wrong result + * [HBASE-11237] - Bulk load initiated by user other than hbase fails + * [HBASE-11238] - Add info about SlabCache and BucketCache to Ref Guide + * [HBASE-11239] - Forgot to svn add test that was part of HBASE-11171, TestCacheConfig + * [HBASE-11248] - KeyOnlyKeyValue#toString() passes wrong offset to keyToString() + * [HBASE-11251] - LoadTestTool should grant READ permission for the users that are given READ access for specific cells + * [HBASE-11252] - Fixing new javadoc warnings in master branch + * [HBASE-11253] - IntegrationTestWithCellVisibilityLoadAndVerify failing since HBASE-10326 + * [HBASE-11255] - Negative request num in region load + * [HBASE-11260] - hbase-default.xml refers to hbase.regionserver.global.memstore.upperLimit which is deprecated + * [HBASE-11267] - Dynamic metrics2 metrics may consume large amount of heap memory + * [HBASE-11268] - HTablePool is now a deprecated class, should update docs to reflect this + * [HBASE-11273] - Fix jersey and slf4j deps + * [HBASE-11275] - [AccessController] postCreateTable hook fails when another CP creates table on their startup + * [HBASE-11277] - RPCServer threads can wedge under high load + * [HBASE-11279] - Block cache could be disabled by mistake + * [HBASE-11285] - Expand coprocs info in Ref Guide + * [HBASE-11297] - Remove some synchros in the rpcServer responder + * [HBASE-11298] - Simplification in RpcServer code + * [HBASE-11302] - ReplicationSourceManager#sources is not thread safe + * [HBASE-11310] - Delete's copy constructor should copy the attributes also + * [HBASE-11311] - Secure Bulk Load does not execute chmod 777 on the files + * [HBASE-11312] - Minor refactoring of TestVisibilityLabels class + * [HBASE-11320] - Reenable bucket cache logging + * [HBASE-11324] - Update 2.5.2.8. Managed Compactions + * [HBASE-11327] - ExportSnapshot hit stackoverflow error when target snapshotDir doesn't contain uri + * [HBASE-11329] - Minor fixup of new blockcache tab number formatting + * [HBASE-11335] - Fix the TABLE_DIR param in TableSnapshotInputFormat + * [HBASE-11337] - Document how to create, modify, delete a table using Java + * [HBASE-11338] - Expand documentation on bloom filters + * [HBASE-11340] - Remove references to xcievers in documentation + * [HBASE-11341] - ZKProcedureCoordinatorRpcs should respond only to members + * [HBASE-11342] - The method isChildReadLock in class ZKInterProcessLockBase is wrong + * [HBASE-11347] - For some errors, the client can retry infinitely + * [HBASE-11353] - Wrong Write Request Count + * [HBASE-11363] - Access checks in preCompact and preCompactSelection are out of sync + * [HBASE-11371] - Typo in Thrift2 docs + * [HBASE-11373] - hbase-protocol compile failed for name conflict of RegionTransition + * [HBASE-11374] - RpcRetryingCaller#callWithoutRetries has a timeout of zero + * [HBASE-11378] - TableMapReduceUtil overwrites user supplied options for multiple tables/scaners job + * [HBASE-11380] - HRegion lock object is not being released properly, leading to snapshot failure + * [HBASE-11382] - Adding unit test for HBASE-10964 (Delete mutation is not consistent with Put wrt timestamp) + * [HBASE-11387] - metrics: wrong totalRequestCount + * [HBASE-11391] - Thrift table creation will fail with default TTL with sanity checks + * [HBASE-11396] - Invalid meta entries can lead to unstartable master + * [HBASE-11397] - When merging expired stripes, we need to create an empty file to preserve metadata. + * [HBASE-11399] - Improve Quickstart chapter and move Pseudo-distributed and distributed to it + * [HBASE-11403] - Fix race conditions around Object#notify + * [HBASE-11413] - [findbugs] RV: Negating the result of compareTo()/compare() + * [HBASE-11418] - build target "site" doesn't respect hadoop-two.version property + * [HBASE-11422] - Specification of scope is missing for certain Hadoop dependencies + * [HBASE-11423] - Visibility label and per cell ACL feature not working with HTable#mutateRow() and MultiRowMutationEndpoint + * [HBASE-11424] - Avoid usage of CellUtil#getTagArray(Cell cell) within server + * [HBASE-11430] - lastFlushSeqId has been updated wrongly during region open + * [HBASE-11432] - [AccessController] Remove cell first strategy + * [HBASE-11433] - LruBlockCache does not respect its configurable parameters + * [HBASE-11435] - Visibility labelled cells fail to getting replicated + * [HBASE-11439] - StripeCompaction may not obey the OffPeak rule to compaction + * [HBASE-11442] - ReplicationSourceManager doesn't cleanup the queues for recovered sources + * [HBASE-11445] - TestZKProcedure#testMultiCohortWithMemberTimeoutDuringPrepare is flaky + * [HBASE-11448] - Fix javadoc warnings + * [HBASE-11449] - IntegrationTestIngestWithACL fails to use different users after HBASE-10810 + * [HBASE-11457] - Increment HFile block encoding IVs accounting for ciper's internal use + * [HBASE-11458] - NPEs if RegionServer cannot initialize + * [HBASE-11460] - Deadlock in HMaster on masterAndZKLock in HConnectionManager + * [HBASE-11463] - (findbugs) HE: Class defines equals() and uses Object.hashCode() + * [HBASE-11465] - [VisibilityController] Reserved tags check not happening for Append/Increment + * [HBASE-11475] - Distributed log replay should also replay compaction events + * [HBASE-11476] - Expand 'Conceptual View' section of Data Model chapter + * [HBASE-11477] - book.xml has Docbook validity issues (again) + * [HBASE-11481] - TableSnapshotInputFormat javadoc wrongly claims HBase "enforces security" + * [HBASE-11487] - ScanResponse carries non-zero cellblock for CloseScanRequest (ScanRequest with close_scanner = true) + * [HBASE-11488] - cancelTasks in SubprocedurePool can hang during task error + * [HBASE-11489] - ClassNotFoundException while running IT tests in trunk using 'mvn verify' + * [HBASE-11492] - Hadoop configuration overrides some ipc parameters including tcpNoDelay + * [HBASE-11493] - Autorestart option is not working because of stale znode "shutdown" + * [HBASE-11496] - HBASE-9745 broke cygwin CLASSPATH translation + * [HBASE-11502] - Track down broken images in Ref Guide + * [HBASE-11505] - 'snapshot' shell command shadows 'snapshot' shell when 'help' is invoked + * [HBASE-11506] - IntegrationTestWithCellVisibilityLoadAndVerify allow User to be passed as arg + * [HBASE-11509] - Forward port HBASE-11039 to trunk and branch-1 after HBASE-11489 + * [HBASE-11510] - Visibility serialization format tag gets duplicated in Append/Increment'ed cells + * [HBASE-11514] - Fix findbugs warnings in blockcache + * [HBASE-11517] - TestReplicaWithCluster turns zombie + * [HBASE-11518] - doc update for how to create non-shared HConnection + * [HBASE-11523] - JSON serialization of PE Options is broke + * [HBASE-11525] - Region server holding in region states is out of sync with meta + * [HBASE-11527] - Cluster free memory limit check should consider L2 block cache size also when L2 cache is onheap. + * [HBASE-11530] - RegionStates adds regions to wrong servers + * [HBASE-11531] - RegionStates for regions under region-in-transition znode are not updated on startup + * [HBASE-11534] - Remove broken JAVA_HOME autodetection in hbase-config.sh + * [HBASE-11535] - ReplicationPeer map is not thread safe + * [HBASE-11536] - Puts of region location to Meta may be out of order which causes inconsistent of region location + * [HBASE-11537] - Avoid synchronization on instances of ConcurrentMap + * [HBASE-11540] - Document HBASE-11474 + * [HBASE-11541] - Wrong result when scaning meta with startRow + * [HBASE-11545] - mapred.TableSnapshotInputFormat is missing InterfaceAudience annotation + * [HBASE-11550] - Custom value for BUCKET_CACHE_BUCKETS_KEY should be sorted + * [HBASE-11551] - BucketCache$WriterThread.run() doesn't handle exceptions correctly + * [HBASE-11554] - Remove Reusable poolmap Rpc client type. + * [HBASE-11555] - TableSnapshotRegionSplit should be public + * [HBASE-11558] - Caching set on Scan object gets lost when using TableMapReduceUtil in 0.95+ + * [HBASE-11561] - deprecate ImmutableBytesWritable.getSize and replace with getLength + * [HBASE-11564] - Improve cancellation management in the rpc layer + * [HBASE-11565] - Stale connection could stay for a while + * [HBASE-11575] - Pseudo distributed mode does not work as documented + * [HBASE-11579] - CopyTable should check endtime value only if != 0 + * [HBASE-11582] - Fix Javadoc warning in DataInputInputStream and CacheConfig + * [HBASE-11586] - HFile's HDFS op latency sampling code is not used + * [HBASE-11588] - RegionServerMetricsWrapperRunnable misused the 'period' parameter + * [HBASE-11589] - AccessControlException should be a not retriable exception + * [HBASE-11591] - Scanner fails to retrieve KV from bulk loaded file with highest sequence id than the cell's mvcc in a non-bulk loaded file + * [HBASE-11593] - TestCacheConfig failing consistently in precommit builds + * [HBASE-11594] - Unhandled NoNodeException in distributed log replay mode + * [HBASE-11603] - Apply version of HADOOP-8027 to our JMXJsonServlet + * [HBASE-11609] - LoadIncrementalHFiles fails if the namespace is specified + * [HBASE-11617] - incorrect AgeOfLastAppliedOp and AgeOfLastShippedOp in replication Metrics when no new replication OP + * [HBASE-11620] - Record the class name of Writer in WAL header so that only proper Reader can open the WAL file + * [HBASE-11627] - RegionSplitter's rollingSplit terminated with "/ by zero", and the _balancedSplit file was not deleted properly + * [HBASE-11632] - Region split needs to clear force split flag at the end of SplitRequest run + * [HBASE-11659] - Region state RPC call is not idempotent + * [HBASE-11662] - Launching shell with long-form --debug fails + * [HBASE-11668] - Re-add HBASE_LIBRARY_PATH to bin/hbase + * [HBASE-11671] - TestEndToEndSplitTransaction fails on master + * [HBASE-11678] - BucketCache ramCache fills heap after running a few hours + * [HBASE-11687] - No need to abort on postOpenDeployTasks exception if region opening is cancelled + * [HBASE-11703] - Meta region state could be corrupted + * [HBASE-11705] - callQueueSize should be decremented in a fail-fast scenario + * [HBASE-11708] - RegionSplitter incorrectly calculates splitcount + * [HBASE-11709] - TestMasterShutdown can fail sometime + * [HBASE-11716] - LoadTestDataGeneratorWithVisibilityLabels should handle Delete mutations + * [HBASE-11717] - Remove unused config 'hbase.offheapcache.percentage' from hbase-default.xml and book + * [HBASE-11718] - Remove some logs in RpcClient.java + * [HBASE-11719] - Remove some unused paths in AsyncClient + * [HBASE-11725] - Backport failover checking change to 1.0 + * [HBASE-11726] - Master should fail-safe if starting with a pre 0.96 layout + * [HBASE-11727] - Assignment wait time error in case of ServerNotRunningYetException + * [HBASE-11728] - Data loss while scanning using PREFIX_TREE DATA-BLOCK-ENCODING + * [HBASE-11733] - Avoid copy-paste in Master/Region CoprocessorHost + * [HBASE-11744] - RpcServer code should not use a collection from netty internal + * [HBASE-11745] - FilterAllFilter should return ReturnCode.SKIP + * [HBASE-11755] - VisibilityController returns the wrong value for preBalanceSwitch() + * [HBASE-11766] - Backdoor CoprocessorHConnection is no longer being used for local writes + * [HBASE-11770] - TestBlockCacheReporting.testBucketCache is not stable + * [HBASE-11772] - Bulk load mvcc and seqId issues with native hfiles + * [HBASE-11773] - Wrong field used for protobuf construction in RegionStates. + * [HBASE-11782] - Document that hbase.MetaMigrationConvertingToPB needs to be set to true for migrations pre 0.96 + * [HBASE-11787] - TestRegionLocations is not categorized + * [HBASE-11788] - hbase is not deleting the cell when a Put with a KeyValue, KeyValue.Type.Delete is submitted + * [HBASE-11789] - LoadIncrementalHFiles is not picking up the -D option + * [HBASE-11794] - StripeStoreFlusher causes NullPointerException + * [HBASE-11797] - Create Table interface to replace HTableInterface + * [HBASE-11802] - Scan copy constructor doesn't copy reversed member variable + * [HBASE-11813] - CellScanner#advance may overflow stack + * [HBASE-11814] - TestAssignmentManager.testCloseFailed() and testOpenCloseRacing() is flaky + * [HBASE-11816] - Initializing custom Metrics implementation failed in Mapper or Reducer + * [HBASE-11820] - ReplicationSource : Set replication codec class as RPC codec class on a clonned Configuration + * [HBASE-11823] - Cleanup javadoc warnings. + * [HBASE-11832] - maven release plugin overrides command line arguments + * [HBASE-11836] - IntegrationTestTimeBoundedMultiGetRequestsWithRegionReplicas tests simple get by default + * [HBASE-11839] - TestRegionRebalance is flakey + * [HBASE-11844] - region_mover.rb load enters an infinite loop if region already present on target server + * [HBASE-11851] - RpcClient can try to close a connection not ready to close + * [HBASE-11856] - hbase-common needs a log4j.properties resource for handling unit test logging output + * [HBASE-11857] - Restore ReaderBase.initAfterCompression() and WALCellCodec.create(Configuration, CompressionContext) + * [HBASE-11859] - 'hadoop jar' references in documentation should mention hbase-server.jar, not hbase.jar + * [HBASE-11863] - WAL files are not archived and stays in the WAL directory after splitting + * [HBASE-11876] - RegionScanner.nextRaw(...) should not update metrics + * [HBASE-11878] - TestVisibilityLabelsWithDistributedLogReplay#testAddVisibilityLabelsOnRSRestart sometimes fails due to VisibilityController not yet initialized + * [HBASE-11880] - NPE in MasterStatusServlet + * [HBASE-11882] - Row level consistency may not be maintained with bulk load and compaction + * [HBASE-11886] - The creator of the table should have all permissions on the table + * [HBASE-11887] - Memory retention in branch-1; millions of instances of LiteralByteString for column qualifier and value + * [HBASE-11892] - configs contain stale entries + * [HBASE-11893] - RowTooBigException should be in hbase-client module + * [HBASE-11896] - LoadIncrementalHFiles fails in secure mode if the namespace is specified + * [HBASE-11898] - CoprocessorHost.Environment should cache class loader instance + * [HBASE-11905] - Add orca to server UIs and update logo. + * [HBASE-11921] - Minor fixups that come of testing branch-1 + * [HBASE-11932] - Stop the html-single from building a html-single of every chapter and cluttering the docbkx directory + * [HBASE-11936] - IsolationLevel must be attribute of a Query not a Scan + * [HBASE-11946] - Get xref and API docs to build properly again + * [HBASE-11947] - NoSuchElementException in balancer for master regions + * [HBASE-11949] - Setting hfile.block.cache.size=0 doesn't actually disable blockcache + * [HBASE-11959] - TestAssignmentManagerOnCluster is flaky + * [HBASE-11972] - The "doAs user" used in the update to hbase:acl table RPC is incorrect + * [HBASE-11976] - Server startcode is not checked for bulk region assignment + * [HBASE-11984] - TestClassFinder failing on occasion + * [HBASE-11989] - IntegrationTestLoadAndVerify cannot be configured anymore on distributed mode + +** Improvement + * [HBASE-2217] - VM OPTS for shell only + * [HBASE-3270] - When we create the .version file, we should create it in a tmp location and then move it into place + * [HBASE-4163] - Create Split Strategy for YCSB Benchmark + * [HBASE-4495] - CatalogTracker has an identity crisis; needs to be cut-back in scope + * [HBASE-5349] - Automagically tweak global memstore and block cache sizes based on workload + * [HBASE-5923] - Cleanup checkAndXXX logic + * [HBASE-6626] - Add a chapter on HDFS in the troubleshooting section of the HBase reference guide. + * [HBASE-6990] - Pretty print TTL + * [HBASE-7088] - Duplicate code in RowCounter + * [HBASE-7849] - Provide administrative limits around bulkloads of files into a single region + * [HBASE-7910] - Dont use reflection for security + * [HBASE-7987] - Snapshot Manifest file instead of multiple empty files + * [HBASE-8076] - add better doc for HBaseAdmin#offline API. + * [HBASE-8298] - In shell, provide alias of 'desc' for 'describe' + * [HBASE-8315] - Documentation should have more information of LRU Stats + * [HBASE-8332] - Add truncate as HMaster method + * [HBASE-8495] - Change ownership of the directory to bulk load + * [HBASE-8604] - improve reporting of incorrect peer address in replication + * [HBASE-8755] - A new write thread model for HLog to improve the overall HBase write throughput + * [HBASE-8763] - Combine MVCC and SeqId + * [HBASE-8807] - HBase MapReduce Job-Launch Documentation Misplaced + * [HBASE-8970] - [book] Filter language documentation is hidden + * [HBASE-9343] - Implement stateless scanner for Stargate + * [HBASE-9345] - Add support for specifying filters in scan + * [HBASE-9426] - Make custom distributed barrier procedure pluggable + * [HBASE-9501] - Provide throttling for replication + * [HBASE-9524] - Multi row get does not return any results even if any one of the rows specified in the query is missing and improve exception handling + * [HBASE-9542] - Have Get and MultiGet do cellblocks, currently they are pb all the time + * [HBASE-9829] - make the compaction logging less confusing + * [HBASE-9857] - Blockcache prefetch option + * [HBASE-9866] - Support the mode where REST server authorizes proxy users + * [HBASE-9892] - Add info port to ServerName to support multi instances in a node + * [HBASE-9999] - Add support for small reverse scan + * [HBASE-10010] - eliminate the put latency spike on the new log file beginning + * [HBASE-10048] - Add hlog number metric in regionserver + * [HBASE-10074] - consolidate and improve capacity/sizing documentation + * [HBASE-10086] - [book] document the HBase canary tool usage in the HBase Book + * [HBASE-10116] - SlabCache metrics improvements + * [HBASE-10128] - Improve the copy table doc to include information about versions + * [HBASE-10141] - instead of putting expired store files thru compaction, just archive them + * [HBASE-10157] - Provide CP hook post log replay + * [HBASE-10164] - Allow heapsize of different units to be passed as HBASE_HEAPSIZE + * [HBASE-10173] - Need HFile version check in security coprocessors + * [HBASE-10175] - 2-thread ChaosMonkey steps on its own toes + * [HBASE-10202] - Documentation is lacking information about rolling-restart.sh script. + * [HBASE-10211] - Improve AccessControl documentation in hbase book + * [HBASE-10213] - Add read log size per second metrics for replication source + * [HBASE-10228] - Support setCellVisibility and setAuthorizations in Shell + * [HBASE-10229] - Support OperationAttributes in Increment and Append in Shell + * [HBASE-10239] - Improve determinism and debugability of TestAccessController + * [HBASE-10252] - Don't write back to WAL/memstore when Increment amount is zero (mostly for query rather than update intention) + * [HBASE-10263] - make LruBlockCache single/multi/in-memory ratio user-configurable and provide preemptive mode for in-memory type block + * [HBASE-10265] - Upgrade to commons-logging 1.1.3 + * [HBASE-10277] - refactor AsyncProcess + * [HBASE-10289] - Avoid random port usage by default JMX Server. Create Custome JMX server + * [HBASE-10323] - Auto detect data block encoding in HFileOutputFormat + * [HBASE-10324] - refactor deferred-log-flush/Durability related interface/code/naming to align with changed semantic of the new write thread model + * [HBASE-10331] - Insure security tests use SecureTestUtil methods for grants + * [HBASE-10344] - Improve write performance by ignoring sync to hdfs when an asyncer's writes have been synced by other asyncer + * [HBASE-10346] - Add Documentation for stateless scanner + * [HBASE-10368] - Add Mutation.setWriteToWAL() back to 0.98 + * [HBASE-10373] - Add more details info for ACL group in HBase book + * [HBASE-10389] - Add namespace help info in table related shell commands + * [HBASE-10395] - endTime won't be set in VerifyReplication if startTime is not set + * [HBASE-10419] - Add multiget support to PerformanceEvaluation + * [HBASE-10423] - Report back the message of split or rollback failure to the master + * [HBASE-10427] - clean up HRegionLocation/ServerName usage + * [HBASE-10430] - Support compressTags in shell for enabling tag encoding + * [HBASE-10471] - Remove HTD.isAsyncLogFlush() from trunk + * [HBASE-10479] - HConnection interface is public but is used internally, and contains a bunch of methods + * [HBASE-10487] - Avoid allocating new KeyValue and according bytes-copying for appended kvs which don't have existing values + * [HBASE-10498] - Add new APIs to load balancer interface + * [HBASE-10511] - Add latency percentiles on PerformanceEvaluation + * [HBASE-10518] - DirectMemoryUtils.getDirectMemoryUsage spams when none is configured + * [HBASE-10569] - Co-locate meta and master + * [HBASE-10570] - Allow overrides of Surefire secondPartForkMode and testFailureIgnore + * [HBASE-10589] - Reduce unnecessary TestRowProcessorEndpoint resource usage + * [HBASE-10590] - Update contents about tracing in the Reference Guide + * [HBASE-10591] - Sanity check table configuration in createTable + * [HBASE-10592] - Refactor PerformanceEvaluation tool + * [HBASE-10597] - IOEngine#read() should return the number of bytes transferred + * [HBASE-10599] - Replace System.currentMillis() with EnvironmentEdge.currentTimeMillis in memstore flusher and related places + * [HBASE-10603] - Deprecate RegionSplitter CLI tool + * [HBASE-10615] - Make LoadIncrementalHFiles skip reference files + * [HBASE-10638] - Improve error message when there is no region server available for move + * [HBASE-10641] - Configurable Bucket Sizes in bucketCache + * [HBASE-10663] - Some code cleanup of class Leases and ScannerListener.leaseExpired + * [HBASE-10678] - Make verifyrep tool implement toolrunner + * [HBASE-10690] - Drop Hadoop-1 support + * [HBASE-10693] - Correct declarations of Atomic* fields from 'volatile' to 'final' + * [HBASE-10744] - AM#CloseRegion no need to retry on FailedServerException + * [HBASE-10746] - Bump the version of HTrace to 3.0 + * [HBASE-10752] - Port HBASE-10270 'Remove DataBlockEncoding from BlockCacheKey' to trunk + * [HBASE-10769] - hbase/bin/hbase-cleanup.sh has wrong usage string + * [HBASE-10771] - Primitive type put/get APIs in ByteRange + * [HBASE-10785] - Metas own location should be cached + * [HBASE-10788] - Add 99th percentile of latency in PE + * [HBASE-10797] - Add support for -h and --help to rolling_restart.sh and fix the usage string output + * [HBASE-10813] - Possible over-catch of exceptions + * [HBASE-10823] - Resolve LATEST_TIMESTAMP to current server time before scanning for ACLs + * [HBASE-10835] - DBE encode path improvements + * [HBASE-10842] - Some loggers not declared static final + * [HBASE-10861] - Extend ByteRange to create Mutable and Immutable ByteRange + * [HBASE-10871] - Indefinite OPEN/CLOSE wait on busy RegionServers + * [HBASE-10873] - Control number of regions assigned to backup masters + * [HBASE-10883] - Restrict the universe of labels and authorizations + * [HBASE-10884] - [REST] Do not disable block caching when scanning + * [HBASE-10885] - Support visibility expressions on Deletes + * [HBASE-10887] - tidy ThriftUtilities format + * [HBASE-10892] - [Shell] Add support for globs in user_permission + * [HBASE-10902] - Make Secure Bulk Load work across remote secure clusters + * [HBASE-10911] - ServerShutdownHandler#toString shows meaningless message + * [HBASE-10916] - [VisibilityController] Stackable ScanLabelGenerators + * [HBASE-10923] - Control where to put meta region + * [HBASE-10925] - Do not OOME, throw RowTooBigException instead + * [HBASE-10926] - Use global procedure to flush table memstore cache + * [HBASE-10934] - Provide Admin interface to abstract HBaseAdmin + * [HBASE-10950] - Add a configuration point for MaxVersion of Column Family + * [HBASE-10951] - Use PBKDF2 to generate test encryption keys in the shell + * [HBASE-10952] - [REST] Let the user turn off block caching if desired + * [HBASE-10960] - Enhance HBase Thrift 1 to include "append" and "checkAndPut" operations + * [HBASE-10984] - Add description about setting up htrace-zipkin to documentation + * [HBASE-11000] - Add autoflush option to PerformanceEvaluation + * [HBASE-11001] - Shell support for granting cell permissions for testing + * [HBASE-11002] - Shell support for changing cell visibility for testing + * [HBASE-11004] - Extend traces through FSHLog#sync + * [HBASE-11007] - BLOCKCACHE in schema descriptor seems not aptly named + * [HBASE-11008] - Align bulk load, flush, and compact to require Action.CREATE + * [HBASE-11026] - Provide option to filter out all rows in PerformanceEvaluation tool + * [HBASE-11044] - [Shell] Show groups for user in 'whoami' output + * [HBASE-11047] - Remove TimeoutMontior + * [HBASE-11048] - Support setting custom priority per client RPC + * [HBASE-11068] - Update code to use Admin factory method instead of constructor + * [HBASE-11074] - Have PE emit histogram stats as it runs rather than dump once at end of test + * [HBASE-11083] - ExportSnapshot should provide capability to limit bandwidth consumption + * [HBASE-11086] - Add htrace support for PerfEval + * [HBASE-11119] - Update ExportSnapShot to optionally not use a tmp file on external file system + * [HBASE-11123] - Upgrade instructions from 0.94 to 0.98 + * [HBASE-11126] - Add RegionObserver pre hooks that operate under row lock + * [HBASE-11128] - Add -target option to ExportSnapshot to export with a different name + * [HBASE-11134] - Add a -list-snapshots option to SnapshotInfo + * [HBASE-11136] - Add permission check to roll WAL writer + * [HBASE-11137] - Add mapred.TableSnapshotInputFormat + * [HBASE-11151] - move tracing modules from hbase-server to hbase-common + * [HBASE-11167] - Avoid usage of java.rmi package Exception in MemStore + * [HBASE-11201] - Enable global procedure members to return values to procedure master + * [HBASE-11211] - LoadTestTool option for specifying number of regions per server + * [HBASE-11219] - HRegionServer#createRegionLoad() should reuse RegionLoad.Builder instance when called in a loop + * [HBASE-11220] - Add listeners to ServerManager and AssignmentManager + * [HBASE-11240] - Print hdfs pipeline when hlog's sync is slow + * [HBASE-11259] - Compression.java different compressions load system classpath differently causing errors + * [HBASE-11304] - Enable HBaseAdmin.execProcedure to return data from procedure execution + * [HBASE-11305] - Remove bunch of unused imports in HConnectionManager + * [HBASE-11315] - Keeping MVCC for configurable longer time + * [HBASE-11319] - No need to use favored node mapping initialization to find all regions + * [HBASE-11326] - Use an InputFormat for ExportSnapshot + * [HBASE-11331] - [blockcache] lazy block decompression + * [HBASE-11344] - Hide row keys and such from the web UIs + * [HBASE-11348] - Make frequency and sleep times of chaos monkeys configurable + * [HBASE-11349] - [Thrift] support authentication/impersonation + * [HBASE-11350] - [PE] Allow random value size + * [HBASE-11355] - a couple of callQueue related improvements + * [HBASE-11362] - Minor improvements to LoadTestTool and PerformanceEvaluation + * [HBASE-11370] - SSH doesn't need to scan meta if not using ZK for assignment + * [HBASE-11376] - Presplit table in IntegrationTestBigLinkedList's Generator tool + * [HBASE-11390] - PerformanceEvaluation: add an option to use a single connection + * [HBASE-11398] - Print the stripes' state with file size info + * [HBASE-11407] - hbase-client should not require Jackson for pure HBase queries be executed + * [HBASE-11415] - [PE] Dump config before running test + * [HBASE-11421] - HTableInterface javadoc correction + * [HBASE-11434] - [AccessController] Disallow inbound cells with reserved tags + * [HBASE-11436] - Support start Row and stop Row in HBase Export + * [HBASE-11437] - Modify cell tag handling code to treat the length as unsigned + * [HBASE-11438] - [Visibility Controller] Support UTF8 character as Visibility Labels + * [HBASE-11440] - Make KeyValueCodecWithTags as the default codec for replication in trunk + * [HBASE-11444] - Remove use of reflection for User#getShortName + * [HBASE-11446] - Reduce the frequency of RNG calls in SecureWALCellCodec#EncryptedKvEncoder + * [HBASE-11450] - Improve file size info in SnapshotInfo tool + * [HBASE-11452] - add getUserPermission feature in AccessControlClient as client API + * [HBASE-11473] - Add BaseWALObserver class + * [HBASE-11474] - [Thrift2] support authentication/impersonation + * [HBASE-11491] - Add an option to sleep randomly during the tests with the PE tool + * [HBASE-11497] - Expose RpcScheduling implementations as LimitedPrivate interfaces + * [HBASE-11513] - Combine SingleMultiple Queue RpcExecutor into a single class + * [HBASE-11516] - Track time spent in executing coprocessors in each region. + * [HBASE-11553] - Abstract visibility label related services into an interface + * [HBASE-11566] - make ExportSnapshot extendable by removing 'final' + * [HBASE-11583] - Refactoring out the configuration changes for enabling VisibilityLabels in the unit tests. + * [HBASE-11623] - mutateRowsWithLocks might require updatesLock.readLock with waitTime=0 + * [HBASE-11630] - Refactor TestAdmin to use Admin interface instead of HBaseAdmin + * [HBASE-11631] - Wait a little till server is online in assigning meta + * [HBASE-11649] - Add shortcut commands to bin/hbase for test tools + * [HBASE-11650] - Write hbase.id to a temporary location and move into place + * [HBASE-11657] - Put HTable region methods in an interface + * [HBASE-11664] - Build broken - TestVisibilityWithCheckAuths + * [HBASE-11667] - Comment ClientScanner logic for NSREs. + * [HBASE-11674] - LoadIncrementalHFiles should be more verbose after unrecoverable error + * [HBASE-11679] - Replace "HTable" with "HTableInterface" where backwards-compatible + * [HBASE-11696] - Make CombinedBlockCache resizable. + * [HBASE-11697] - Improve the 'Too many blocks' message on UI blockcache status page + * [HBASE-11701] - Start and end of memstore flush log should be on the same level + * [HBASE-11702] - Better introspection of long running compactions + * [HBASE-11706] - Set versions for VerifyReplication + * [HBASE-11731] - Add option to only run a subset of the shell tests + * [HBASE-11748] - Cleanup and add pool usage tracing to Compression + * [HBASE-11749] - Better error logging when coprocessors loading has failed. + * [HBASE-11754] - [Shell] Record table property SPLITS_FILE in descriptor + * [HBASE-11757] - Provide a common base abstract class for both RegionObserver and MasterObserver + * [HBASE-11774] - Avoid allocating unnecessary tag iterators + * [HBASE-11777] - Find a way to set sequenceId on Cells on the server + * [HBASE-11790] - Bulk load should use HFileOutputFormat2 in all cases + * [HBASE-11805] - KeyValue to Cell Convert in WALEdit APIs + * [HBASE-11810] - Access SSL Passwords through Credential Provider API + * [HBASE-11821] - [ImportTSV] Abstract labels tags creation into pluggable Interface + * [HBASE-11825] - Create Connection and ConnectionManager + * [HBASE-11826] - Split each tableOrRegionName admin methods into two targetted methods + * [HBASE-11828] - callers of SeverName.valueOf should use equals and not == + * [HBASE-11845] - HFile tool should implement Tool, disable blockcache by default + * [HBASE-11846] - HStore#assertBulkLoadHFileOk should log if a full HFile verification will be performed during a bulkload + * [HBASE-11847] - HFile tool should be able to print block headers + * [HBASE-11865] - Result implements CellScannable; rather it should BE a CellScanner + * [HBASE-11873] - Hbase Version CLI enhancement + * [HBASE-11877] - Make TableSplit more readable + * [HBASE-11891] - Introduce HBaseInterfaceAudience level to denote class names that appear in configs. + * [HBASE-11897] - Add append and remove peer table-cfs cmds for replication + +** New Feature + * [HBASE-4089] - blockCache contents report + * [HBASE-6104] - Require EXEC permission to call coprocessor endpoints + * [HBASE-7667] - Support stripe compaction + * [HBASE-7840] - Enhance the java it framework to start & stop a distributed hbase & hadoop cluster + * [HBASE-8751] - Enable peer cluster to choose/change the ColumnFamilies/Tables it really want to replicate from a source cluster + * [HBASE-9047] - Tool to handle finishing replication when the cluster is offline + * [HBASE-10119] - Allow HBase coprocessors to clean up when they fail + * [HBASE-10151] - No-op HeapMemoryTuner + * [HBASE-10416] - Improvements to the import flow + * [HBASE-10881] - Support reverse scan in thrift2 + * [HBASE-10935] - support snapshot policy where flush memstore can be skipped to prevent production cluster freeze + * [HBASE-11724] - Add to RWQueueRpcExecutor the ability to split get and scan handlers + * [HBASE-11885] - Provide a Dockerfile to easily build and run HBase from source + * [HBASE-11909] - Region count listed by HMaster UI and hbck are different + +** Task + * [HBASE-4456] - [doc] Add a section about RS failover + * [HBASE-4920] - We need a mascot, a totem + * [HBASE-5697] - Audit HBase for usage of deprecated hadoop 0.20.x property names. + * [HBASE-6139] - Add troubleshooting section for CentOS 6.2 page allocation failure issue + * [HBASE-6192] - Document ACL matrix in the book + * [HBASE-7394] - Document security config requirements from HBASE-7357 + * [HBASE-8035] - Add site target check to precommit tests + * [HBASE-8844] - Document the removal of replication state AKA start/stop_replication + * [HBASE-9580] - Document the meaning of @InterfaceAudience in hbase ref guide + * [HBASE-9733] - Book should have individual Disqus comment per page + * [HBASE-9875] - NamespaceJanitor chore is not used + * [HBASE-10134] - Fix findbug warning in VisibilityController + * [HBASE-10159] - Replaced deprecated interface Closeable + * [HBASE-10206] - Explain tags in the hbase book + * [HBASE-10246] - Wrap long lines in recently added source files + * [HBASE-10364] - Allow configuration option for parent znode in LoadTestTool + * [HBASE-10388] - Add export control notice in README + * [HBASE-10439] - Document how to configure REST server impersonation + * [HBASE-10473] - Add utility for adorning http Context + * [HBASE-10601] - Upgrade hadoop dependency to 2.3.0 release + * [HBASE-10609] - Remove filterKeyValue(Cell ignored) from FilterBase + * [HBASE-10612] - Remove unnecessary dependency on org.eclipse.jdt:core + * [HBASE-10670] - HBaseFsck#connect() should use new connection + * [HBASE-10700] - IntegrationTestWithCellVisibilityLoadAndVerify should allow current user to be the admin + * [HBASE-10740] - Upgrade zookeeper to 3.4.6 release + * [HBASE-10786] - If snapshot verification fails with 'Regions moved', the message should contain the name of region causing the failure + * [HBASE-10787] - TestHCM#testConnection* take too long + * [HBASE-10821] - Make ColumnInterpreter#getValue() abstract + * [HBASE-10824] - Enhance detection of protobuf generated code in line length check + * [HBASE-10889] - test-patch.sh should exclude thrift generated code from long line detection + * [HBASE-10906] - Change error log for NamingException in TableInputFormatBase to WARN level + * [HBASE-10912] - setUp / tearDown in TestSCVFWithMiniCluster should be done once per run + * [HBASE-10956] - Upgrade hadoop-2 dependency to 2.4.0 + * [HBASE-11016] - Remove Filter#filterRow(List) + * [HBASE-11032] - Replace deprecated methods in FileSystem with their replacements + * [HBASE-11050] - Replace empty catch block in TestHLog#testFailedToCreateHLogIfParentRenamed with @Test(expected=) + * [HBASE-11076] - Update refguide on getting 0.94.x to run on hadoop 2.2.0+ + * [HBASE-11090] - Backport HBASE-11083 ExportSnapshot should provide capability to limit bandwidth consumption + * [HBASE-11107] - Provide utility method equivalent to 0.92's Result.getBytes().getSize() + * [HBASE-11154] - Document how to use Reverse Scan API + * [HBASE-11199] - One-time effort to pretty-print the Docbook XML, to make further patch review easier + * [HBASE-11203] - Clean up javadoc and findbugs warnings in trunk + * [HBASE-11204] - Document bandwidth consumption limit feature for ExportSnapshot + * [HBASE-11227] - Mention 8- and 16-bit fixed-with encodings in OrderedBytes docstring + * [HBASE-11230] - Remove getRowOrBefore from HTableInterface and HTable + * [HBASE-11317] - Expand unit testing to cover Mockito and MRUnit and give more examples + * [HBASE-11364] - [BlockCache] Add a flag to cache data blocks in L1 if multi-tier cache + * [HBASE-11600] - DataInputputStream and DoubleOutputStream are no longer being used + * [HBASE-11604] - Disable co-locating meta/master by default + * [HBASE-11621] - Make MiniDFSCluster run faster + * [HBASE-11666] - Enforce JDK7 javac for builds on branch-1 and master + * [HBASE-11682] - Explain hotspotting + * [HBASE-11723] - Document all options of bin/hbase command + * [HBASE-11735] - Document Configurable Bucket Sizes in bucketCache + * [HBASE-11762] - Record the class name of Codec in WAL header + * [HBASE-11800] - Coprocessor service methods in HTableInterface should be annotated public + * [HBASE-11849] - Clean up orphaned private audience classes + * [HBASE-11858] - Audit regionserver classes that are missing InterfaceAudience + +** Test + * [HBASE-8889] - TestIOFencing#testFencingAroundCompaction occasionally fails + * [HBASE-9928] - TestHRegion should clean up test-data directory upon completion + * [HBASE-9953] - PerformanceEvaluation: Decouple data size from client concurrency + * [HBASE-10044] - test-patch.sh should accept documents by known file extensions + * [HBASE-10130] - TestSplitLogManager#testTaskResigned fails sometimes + * [HBASE-10180] - TestByteBufferIOEngine#testByteBufferIOEngine occasionally fails + * [HBASE-10189] - Intermittent TestReplicationSyncUpTool failure + * [HBASE-10301] - TestAssignmentManagerOnCluster#testOpenCloseRacing fails intermittently + * [HBASE-10377] - Add test for HBASE-10370 Compaction in out-of-date Store causes region split failure + * [HBASE-10394] - Test for Replication with tags + * [HBASE-10406] - Column family option is not effective in IntegrationTestSendTraceRequests + * [HBASE-10408] - Intermittent TestDistributedLogSplitting#testLogReplayForDisablingTable failure + * [HBASE-10440] - integration tests fail due to nonce collisions + * [HBASE-10465] - TestZKPermissionsWatcher.testPermissionsWatcher fails sometimes + * [HBASE-10475] - TestRegionServerCoprocessorExceptionWithAbort may timeout due to concurrent lease removal + * [HBASE-10480] - TestLogRollPeriod#testWithEdits may fail due to insufficient waiting + * [HBASE-10543] - Two rare test failures with TestLogsCleaner and TestSplitLogWorker + * [HBASE-10635] - thrift#TestThriftServer fails due to TTL validity check + * [HBASE-10649] - TestMasterMetrics fails occasionally + * [HBASE-10764] - TestLoadIncrementalHFilesSplitRecovery#testBulkLoadPhaseFailure takes too long + * [HBASE-10767] - Load balancer may interfere with tests in TestHBaseFsck + * [HBASE-10774] - Restore TestMultiTableInputFormat + * [HBASE-10782] - Hadoop2 MR tests fail occasionally because of mapreduce.jobhistory.address is no set in job conf + * [HBASE-10828] - TestRegionObserverInterface#testHBase3583 should wait for all regions to be assigned + * [HBASE-10852] - TestDistributedLogSplitting#testDisallowWritesInRecovering occasionally fails + * [HBASE-10867] - TestRegionPlacement#testRegionPlacement occasionally fails + * [HBASE-10868] - TestAtomicOperation should close HRegion instance after each subtest + * [HBASE-10988] - Properly wait for server in TestThriftServerCmdLine + * [HBASE-11010] - TestChangingEncoding is unnecessarily slow + * [HBASE-11019] - incCount() method should be properly stubbed in HConnectionTestingUtility#getMockedConnectionAndDecorate() + * [HBASE-11037] - Race condition in TestZKBasedOpenCloseRegion + * [HBASE-11051] - checkJavacWarnings in test-patch.sh should bail out early if there is compilation error + * [HBASE-11057] - Improve TestShell coverage of grant and revoke comamnds + * [HBASE-11104] - IntegrationTestImportTsv#testRunFromOutputCommitter misses credential initialization + * [HBASE-11152] - test-patch.sh should be able to handle the case where $TERM is not defined + * [HBASE-11166] - Categorize tests in hbase-prefix-tree module + * [HBASE-11328] - testMoveRegion could fail + * [HBASE-11345] - Add an option not to restore cluster after an IT test + * [HBASE-11375] - Validate compile-protobuf profile in test-patch.sh + * [HBASE-11404] - TestLogLevel should stop the server at the end + * [HBASE-11443] - TestIOFencing#testFencingAroundCompactionAfterWALSync times out + * [HBASE-11615] - TestZKLessAMOnCluster.testForceAssignWhileClosing failed on Jenkins + * [HBASE-11713] - Adding hbase shell unit test coverage for visibility labels. + * [HBASE-11918] - TestVisibilityLabelsWithDistributedLogReplay#testAddVisibilityLabelsOnRSRestart sometimes fails due to VisibilityController initialization not being recognized + * [HBASE-11942] - Fix TestHRegionBusyWait + * [HBASE-11966] - Minor error in TestHRegion.testCheckAndMutate_WithCorrectValue() + +** Umbrella + * [HBASE-7319] - Extend Cell usage through read path + * [HBASE-9945] - Coprocessor loading and execution improvements + * [HBASE-10909] - Abstract out ZooKeeper usage in HBase - phase 1 + +``` diff --git a/CHANGES.txt b/CHANGES.txt deleted file mode 100755 index 52d21202fe9..00000000000 --- a/CHANGES.txt +++ /dev/null @@ -1,4455 +0,0 @@ -HBase Change Log -Release 0.93.0 - Unreleased - *DO NOT ADD ISSUES HERE ON COMMIT ANY MORE. WE'LL GENERATE THE LIST - FROM JIRA INSTEAD WHEN WE MAKE A RELEASE* - -Release 0.92.1 - Unreleased - BUG FIXES - HBASE-5176 AssignmentManager#getRegion: logging nit adds a redundant '+' (Karthik K) - HBASE-5237 Addendum for HBASE-5160 and HBASE-4397 (Ram) - HBASE-5235 HLogSplitter writer thread's streams not getting closed when any - of the writer threads has exceptions. (Ram) - HBASE-5243 LogSyncerThread not getting shutdown waiting for the interrupted flag (Ram) - HBASE-5255 Use singletons for OperationStatus to save memory (Benoit) - HBASE-5345 CheckAndPut doesn't work when value is empty byte[] (Evert Arckens) - HBASE-5466 Opening a table also opens the metatable and never closes it - (Ashley Taylor) - - TESTS - HBASE-5223 TestMetaReaderEditor is missing call to CatalogTracker.stop() - -Release 0.92.0 - 01/23/2012 - INCOMPATIBLE CHANGES - HBASE-2002 Coprocessors: Client side support; Support RPC interface - changes at runtime (Gary Helmling via Andrew Purtell) - HBASE-3677 Generate a globally unique cluster ID (changed - ClusterStatus serialization) - HBASE-3762 HTableFactory.releaseHTableInterface() should throw IOException - instead of wrapping in RuntimeException (Ted Yu via garyh) - HBASE-3629 Update our thrift to 0.6 (Moaz Reyad) - HBASE-1502 Remove need for heartbeats in HBase - HBASE-451 Remove HTableDescriptor from HRegionInfo (Subbu M Iyer) - HBASE-451 Remove HTableDescriptor from HRegionInfo - addendum that fixes TestTableMapReduce - HBASE-3534 Action should not store or serialize regionName (Ted Yu) - HBASE-4197 RegionServer expects all scanner to be subclasses of - HRegion.RegionScanner (Lars Hofhansl) - HBASE-4233 Update protobuf dependency to 2.4.0a (todd) - HBASE-4299 Update to Avro 1.5.3 and use Avro Maven plugin to generate - Avro classes. (Alejandro Abdelnur) - HBASE-4369 Deprecate HConnection#getZookeeperWatcher in prep for HBASE-1762 - HBASE-4247 Add isAborted method to the Abortable interface - (Akash Ashok) - HBASE-4503 Purge deprecated HBaseClusterTestCase - HBASE-4374 Up default regions size from 256M to 1G - HBASE-4648 Bytes.toBigDecimal() doesn't use offset (Bryan Keller via Lars H) - HBASE-4715 Remove stale broke .rb scripts from bin dir - HBASE-3433 Remove the KV copy of every KV in Scan; introduced by HBASE-3232 (Lars H) - HBASE-5017 Bump the default hfile.block.cache.size because of HFileV2 - - BUG FIXES - HBASE-3280 YouAreDeadException being swallowed in HRS getMaster - HBASE-3282 Need to retain DeadServers to ensure we don't allow - previously expired RS instances to rejoin cluster - HBASE-3283 NPE in AssignmentManager if processing shutdown of RS who - doesn't have any regions assigned to it - HBASE-3173 HBase 2984 breaks ability to specify BLOOMFILTER & - COMPRESSION via shell - HBASE-3310 Failing creating/altering table with compression agrument from - the HBase shell (Igor Ranitovic via Stack) - HBASE-3317 Javadoc and Throws Declaration for Bytes.incrementBytes() is - Wrong (Ed Kohlwey via Stack) - HBASE-1888 KeyValue methods throw NullPointerException instead of - IllegalArgumentException during parameter sanity check - HBASE-3337 Restore HBCK fix of unassignment and dupe assignment for new - master - HBASE-3332 Regions stuck in transition after RS failure - HBASE-3418 Increment operations can break when qualifiers are split - between memstore/snapshot and storefiles - HBASE-3403 Region orphaned after failure during split - HBASE-3492 NPE while splitting table with empty column family store - HBASE-3400 Coprocessor Support for Generic Interfaces - (Ed Kohlwey via Gary Helmling) - HBASE-3552 Coprocessors are unable to load if RegionServer is launched - using a different classloader than system default - HBASE-3578 TableInputFormat does not setup the configuration for HBase - mapreduce jobs correctly (Dan Harvey via Stack) - HBASE-3601 TestMasterFailover broken in TRUNK - HBASE-3605 Fix balancer log message - HBASE-3538 Column families allow to have slashes in name (Ian Knome via Stack) - HBASE-3313 Table name isn't checked in isTableEnabled/isTableDisabled - (Ted Yu via Stack) - HBASE-3514 Speedup HFile.Writer append (Matteo Bertozzi via Ryan) - HBASE-3665 tighten assertions for testBloomFilterSize - HBASE-3662 REST server does not respect client supplied max versions when - creating scanner - HBASE-3641 LruBlockCache.CacheStats.getHitCount() is not using the - correct variable - HBASE-3532 HRegion#equals is broken (Ted Yu via Stack) - HBASE-3697 Admin actions that use MetaReader to iterate regions need to - skip offline ones - HBASE-3583 Coprocessors: scannerNext and scannerClose hooks are called - when HRegionInterface#get is invoked (Mingjie Lai via - Andrew Purtell) - HBASE-3688 Setters of class HTableDescriptor do not work properly - HBASE-3702 Fix NPE in Exec method parameter serialization - HBASE-3709 HFile compression not sharing configuration - HBASE-3711 importtsv fails if rowkey length exceeds MAX_ROW_LENGTH - (Kazuki Ohta via todd) - HBASE-3716 Intermittent TestRegionRebalancing failure - (Ted Yu via Stack) - HBASE-3712 HTable.close() doesn't shutdown thread pool - (Ted Yu via Stack) - HBASE-3238 HBase needs to have the CREATE permission on the parent of its - ZooKeeper parent znode (Alex Newman via Stack) - HBASE-3728 NPE in HTablePool.closeTablePool (Ted Yu via Stack) - HBASE-3733 MemStoreFlusher.flushOneForGlobalPressure() shouldn't - be using TreeSet for HRegion (Ted Yu via J-D) - HBASE-3739 HMaster.getProtocolVersion() should distinguish - HMasterInterface and HMasterRegionInterface versions - HBASE-3723 Major compact should be done when there is only one storefile - and some keyvalue is outdated (Zhou Shuaifeng via Stack) - HBASE-3624 Only one coprocessor of each priority can be loaded for a table - HBASE-3598 Broken formatting in LRU stats output (Erik Onnen) - HBASE-3758 Delete triggers pre/postScannerOpen upcalls of RegionObserver - (Mingjie Lai via garyh) - HBASE-3790 Fix NPE in ExecResult.write() with null return value - HBASE-3781 hbase shell cannot start "NoMethodError: undefined method - `close' for nil:NilClass" (Mikael Sitruk) - HBASE-3802 Redundant list creation in HRegion - HBASE-3788 Two error handlings in AssignmentManager.setOfflineInZooKeeper() - (Ted Yu) - HBASE-3800 HMaster is not able to start due to AlreadyCreatedException - HBASE-3806 distributed log splitting double escapes task names - (Prakash Khemani) - HBASE-3819 TestSplitLogWorker has too many SLWs running -- makes for - contention and occasional failures - HBASE-3210 HBASE-1921 for the new master - HBASE-3827 hbase-1502, removing heartbeats, broke master joining a running - cluster and was returning master hostname for rs to use - HBASE-3829 TestMasterFailover failures in jenkins - HBASE-3843 splitLogWorker starts too early (Prakash Khemani) - HBASE-3838 RegionCoprocesorHost.preWALRestore throws npe in case there is - no RegionObserver registered (Himanshu Vashishtha) - HBASE-3847 Turn off DEBUG logging of RPCs in WriteableRPCEngine on TRUNK - HBASE-3777 Redefine Identity Of HBase Configuration (Karthick Sankarachary) - HBASE-3849 Fix master ui; hbase-1502 broke requests/second - HBASE-3853 Fix TestInfoServers to pass after HBASE-3835 (todd) - HBASE-3862 Race conditions in aggregate calculation (John Heitmann) - HBASE-3865 Failing TestWALReplay - HBASE-3864 Rename of hfile.min.blocksize.size in HBASE-2899 reverted in - HBASE-1861 (Aaron T. Myers) - HBASE-3876 TestCoprocessorInterface.testCoprocessorInterface broke on - jenkins and local - HBASE-3897 Docs (notsoquick guide) suggest invalid XML (Philip Zeyliger) - HBASE-3898 TestSplitTransactionOnCluster broke in TRUNK - HBASE-3826 Minor compaction needs to check if still over - compactionThreshold after compacting (Nicolas Spiegelberg) - HBASE-3912 [Stargate] Columns not handle by Scan - HBASE-3903 A successful write to client write-buffer may be lost or not - visible (Doug Meil) - HBASE-3894 Thread contention over row locks set monitor (Dave Latham) - HBASE-3959 hadoop-snappy version in the pom.xml is incorrect - (Alejandro Abdelnur) - HBASE-3971 Compression.java uses ClassLoader.getSystemClassLoader() - to load codec (Alejandro Abdelnur) - HBASE-3979 Trivial fixes in code, document (Ming Ma) - HBASE-3794 Ability to Discard Bad HTable Puts - HBASE-3923 HBASE-1502 Broke Shell's status 'simple' and 'detailed' - HBASE-3978 Rowlock lease renew doesn't work when custom coprocessor - indicates to bypass default action (Ming Ma) - HBASE-3963 Schedule all log-spliiting at startup all at once (mingjian) - HBASE-3983 list command in shell seems broken - HBASE-3793 HBASE-3468 Broke checkAndPut with null value (Ming Ma) - HBASE-3889 NPE in Distributed Log Splitting (Anirudh Todi) - HBASE-4000 You can't specify split points when you create a table in - the shell (Joey Echeverria) - HBASE-4029 Inappropriate checking of Logging Mode in HRegionServer - (Akash Ashok via Ted Yu) - HBASE-4037 Add timeout annotations to preempt surefire killing - all tests - HBASE-4024 Major compaction may not be triggered, even though region - server log says it is triggered (Ted Yu) - HBASE-4016 HRegion.incrementColumnValue() doesn't have a consistent - behavior when the field that we are incrementing is less - than 8 bytes long (Li Pi) - HBASE-4012 Further optimize byte comparison methods (Ted Yu) - HBASE-4037 Add timeout annotations to preempt surefire killing - all tests - TestFullLogReconstruction - HBASE-4051 [Coprocessors] Table coprocessor loaded twice when region is - initialized - HBASE-4059 If a region is split during RS shutdown process, the daughter - regions are NOT made online by master - HBASE-3904 HBA.createTable(final HTableDescriptor desc, byte [][] splitKeys) - should be synchronous - HBASE-4053 Most of the regions were added into AssignmentManager#servers twice - HBASE-4061 getTableDirs is missing directories to skip - HBASE-3867 when cluster is stopped and server which hosted meta region is - removed from cluster, master breaks down after restarting cluster. - HBASE-4074 When a RS has hostname with uppercase letter, there are two - RS entries in master (Weihua via Ted Yu) - HBASE-4077 Deadlock if WrongRegionException is thrown from getLock in - HRegion.delete (Adam Warrington via Ted Yu) - HBASE-3893 HRegion.internalObtainRowLock shouldn't wait forever - HBASE-4075 A bug in TestZKBasedOpenCloseRegion (Jieshan Bean via Ted Yu) - HBASE-4087 HBaseAdmin should perform validation of connection it holds - HBASE-4052 Enabling a table after master switch does not allow table scan, - throwing NotServingRegionException (ramkrishna via Ted Yu) - HBASE-4112 Creating table may throw NullPointerException (Jinchao via Ted Yu) - HBASE-4093 When verifyAndAssignRoot throws exception, the deadServers state - cannot be changed (fulin wang via Ted Yu) - HBASE-4118 method regionserver.MemStore#updateColumnValue: the check for - qualifier and family is missing (N Keywal via Ted Yu) - HBASE-4127 Don't modify table's name away in HBaseAdmin - HBASE-4105 Stargate does not support Content-Type: application/json and - Content-Encoding: gzip in parallel - HBASE-4116 [stargate] StringIndexOutOfBoundsException in row spec parse - (Allan Yan) - HBASE-3845 data loss because lastSeqWritten can miss memstore edits - (Prakash Khemani and ramkrishna.s.vasudevan) - HBASE-4083 If Enable table is not completed and is partial, then scanning of - the table is not working (ramkrishna.s.vasudevan) - HBASE-4138 If zookeeper.znode.parent is not specifed explicitly in Client - code then HTable object loops continuously waiting for the root region - by using /hbase as the base node.(ramkrishna.s.vasudevan) - HBASE-4032 HBASE-451 improperly breaks public API HRegionInfo#getTableDesc - HBASE-4003 Cleanup Calls Conservatively On Timeout (Karthick) - HBASE-3857 Fix TestHFileBlock.testBlockHeapSize test failure (Mikhail) - HBASE-4150 Don't enforce pool size limit with ThreadLocalPool - (Karthick Sankarachary via garyh) - HBASE-4171 HBase shell broken in trunk (Lars Hofhansl) - HBASE-4162 Fix TestHRegionInfo.testGetSetOfHTD: delete /tmp/hbase- - if it already exists (Mikhail Bautin) - HBASE-4179 Failed to run RowCounter on top of Hadoop branch-0.22 - (Michael Weng) - HBASE-4181 HConnectionManager can't find cached HRegionInterface and makes clients - work very slow (Jia Liu) - HBASE-4156 ZKConfig defaults clientPort improperly (Michajlo Matijkiw) - HBASE-4184 CatalogJanitor doesn't work properly when "fs.default.name" isn't - set in config file (Ming Ma) - HBASE-4186 No region is added to regionsInTransitionInRS - HBASE-4194 RegionSplitter: Split on under-loaded region servers first - HBASE-2399 Forced splits only act on the first family in a table (Ming Ma) - HBASE-4211 Do init-sizing of the StringBuilder making a ServerName - (Benoît Sigoure) - HBASE-4175 Fix FSUtils.createTableDescriptor() (Ramkrishna) - HBASE-4008 Problem while stopping HBase (Akash Ashok) - HBASE-4065 TableOutputFormat ignores failure to create table instance - (Brock Noland) - HBASE-4167 Potential leak of HTable instances when using HTablePool with - PoolType.ThreadLocal (Karthick Sankarachary) - HBASE-4239 HBASE-4012 introduced duplicate variable Bytes.LONG_BYTES - HBASE-4225 NoSuchColumnFamilyException in multi doesn't say which family - is bad (Ramkrishna Vasudevan) - HBASE-4220 Lots of DNS queries from client - HBASE-4253 Intermittent test failure because of missing config parameter in new - HTable(tablename) (Ramkrishna) - HBASE-4217 HRS.closeRegion should be able to close regions with only - the encoded name (ramkrishna.s.vasudevan) - HBASE-3229 HBASE-3229 Table creation, though using "async" call to master, - can actually run for a while and cause RPC timeout (Ming Ma) - HBASE-4252 TestLogRolling's low-probability failure (Jieshan Bean) - HBASE-4278 Race condition in Slab.java that occurs due to spinlock unlocking - early (Li Pi) - HBASE-4269 Add tests and restore semantics to TableInputFormat/TableRecordReader - (Jonathan Hsieh) - HBASE-4290 HLogSplitter doesn't mark its MonitoredTask as complete in - non-distributed case (todd) - HBASE-4303 HRegionInfo.toString has bad quoting (todd) - HBASE-4307 race condition in CacheTestUtils (Li Pi) - HBASE-4310 SlabCache metrics bugfix (Li Pi) - HBASE-4283 HBaseAdmin never recovers from restarted cluster (Lars Hofhansl) - HBASE-4315 RPC logging too verbose (todd) - HBASE-4273 java.lang.NullPointerException when a table is being disabled and - HMaster restarts (Ming Ma) - HBASE-4027 Off Heap Cache never creates Slabs (Li Pi) - HBASE-4265 zookeeper.KeeperException$NodeExistsException if HMaster restarts - while table is being disabled (Ming Ma) - HBASE-4338 Package build for rpm and deb are broken (Eric Yang) - HBASE-4309 slow query log metrics spewing warnings (Riley Patterson) - HBASE-4302 Only run Snappy compression tests if Snappy is available - (Alejandro Abdelnur via todd) - HBASE-4271 Clean up coprocessor handling of table operations - (Ming Ma via garyh) - HBASE-4341 HRS#closeAllRegions should take care of HRS#onlineRegions's - weak consistency (Jieshan Bean) - HBASE-4297 TableMapReduceUtil overwrites user supplied options - (Jan Lukavsky) - HBASE-4015 Refactor the TimeoutMonitor to make it less racy - (ramkrishna.s.vasudevan) - HBASE-4350 Fix a Bloom filter bug introduced by HFile v2 and - TestMultiColumnScanner that caught it (Mikhail Bautin) - HBASE-4007 distributed log splitting can get indefinitely stuck - (Prakash Khemani) - HBASE-4301 META migration from 0.90 to trunk fails (Subbu Iyer) - HBASE-4331 Bypassing default actions in prePut fails sometimes with - HTable client (Lars Hofhansl via garyh) - HBASE-4340 Hbase can't balance if ServerShutdownHandler encountered - exception (Jinchao Gao) - HBASE-4394 Add support for seeking hints to FilterList - HBASE-4406 TestOpenRegionHandler failing after HBASE-4287 (todd) - HBASE-4330 Fix races in slab cache (Li Pi & Todd) - HBASE-4383 SlabCache reports negative heap sizes (Li Pi) - HBASE-4351 If from Admin we try to unassign a region forcefully, - though a valid region name is given the master is not able - to identify the region to unassign (Ramkrishna) - HBASE-4363 [replication] ReplicationSource won't close if failing - to contact the sink (JD and Lars Hofhansl) - HBASE-4390 [replication] ReplicationSource's UncaughtExceptionHandler - shouldn't join - HBASE-4395 EnableTableHandler races with itself - HBASE-4414 Region splits by size not being triggered - HBASE-4322 HBASE-4322 [hbck] Update checkIntegrity/checkRegionChain - to present more accurate region split problem - (Jon Hseih) - HBASE-4417 HBaseAdmin.checkHBaseAvailable() doesn't close ZooKeeper connections - (Stefan Seelmann) - HBASE-4195 Possible inconsistency in a memstore read after a reseek, - possible performance improvement (nkeywal) - HBASE-4420 MasterObserver preMove() and postMove() should throw - IOException instead of UnknownRegionException - HBASE-4419 Resolve build warning messages (Praveen Patibandia) - HBASE-4428 Two methods in CacheTestUtils don't call setDaemon() on the threads - HBASE-4400 .META. getting stuck if RS hosting it is dead and znode state is in - RS_ZK_REGION_OPENED (Ramkrishna) - HBASE-3421 Very wide rows -- 30M plus -- cause us OOME (Nate Putnam) - HBASE-4153 Handle RegionAlreadyInTransitionException in AssignmentManager - (Ramkrishna) - HBASE-4452 Possibility of RS opening a region though tickleOpening fails due to - znode version mismatch (Ramkrishna) - HBASE-4446 Rolling restart RSs scenario, regions could stay in OPENING state - (Ming Ma) - HBASE-4468 Wrong resource name in an error massage: webapps instead of - hbase-webapps (nkeywal) - HBASE-4472 MiniHBaseCluster.shutdown() doesn't work if no active master - HBASE-4455 Rolling restart RSs scenario, -ROOT-, .META. regions are lost in - AssignmentManager (Ming Ma) - HBASE-4513 NOTICES.txt refers to Facebook for Thrift - HBASE-3130 [replication] ReplicationSource can't recover from session - expired on remote clusters (Chris Trezzo via JD) - HBASE-4212 TestMasterFailover fails occasionally (Gao Jinchao) - HBASE-4412 No need to retry scan operation on the same server in case of - RegionServerStoppedException (Ming Ma) - HBASE-4476 Compactions must fail if column tracker gets columns out of order - (Mikhail Bautin) - HBASE-4209 The HBase hbase-daemon.sh SIGKILLs master when stopping it - (Roman Shaposhnik) - HBASE-4496 HFile V2 does not honor setCacheBlocks when scanning (Lars and Mikhail) - HBASE-4531 hbase-4454 failsafe broke mvn site; back it out or fix - (Akash Ashok) - HBASE-4334 HRegion.get never validates row (Lars Hofhansl) - HBASE-4494 AvroServer:: get fails with NPE on a non-existent row - (Kay Kay) - HBASE-4481 TestMergeTool failed in 0.92 build 20 - HBASE-4386 Fix a potential NPE in TaskMonitor (todd) - HBASE-4402 Retaining locality after restart broken - HBASE-4482 Race Condition Concerning Eviction in SlabCache (Li Pi) - HBASE-4547 TestAdmin failing in 0.92 because .tableinfo not found - HBASE-4540 OpenedRegionHandler is not enforcing atomicity of the operation - it is performing(Ram) - HBASE-4335 Splits can create temporary holes in .META. that confuse clients - and regionservers (Lars H) - HBASE-4555 TestShell seems passed, but actually errors seen in test output - file (Mingjie Lai) - HBASE-4582 Store.java cleanup (failing TestHeapSize and has warnings) - HBASE-4556 Fix all incorrect uses of InternalScanner.next(...) (Lars H) - HBASE-4078 Validate store files after flush/compaction - HBASE-3417 CacheOnWrite is using the temporary output path for block - names, need to use a more consistent block naming scheme (jgray) - HBASE-4551 Fix pom and some test cases to compile and run against - Hadoop 0.23 (todd) - HBASE-3446 ProcessServerShutdown fails if META moves, orphaning lots of - regions - HBASE-4589 CacheOnWrite broken in some cases because it can conflict - with evictOnClose (jgray) - HBASE-4579 CST.requestCompaction semantics changed, logs are now - spammed when too many store files - HBASE-4620 I broke the build when I submitted HBASE-3581 (Send length - of the rpc response) - HBASE-4621 TestAvroServer fails quite often intermittently (Akash Ashok) - HBASE-4378 [hbck] Does not complain about regions with startkey==endkey. - (Jonathan Hsieh) - HBASE-4459 HbaseObjectWritable code is a byte, we will eventually run out of codes - HBASE-4430 Disable TestSlabCache and TestSingleSizedCache temporarily to - see if these are cause of build box failure though all tests - pass (Li Pi) - HBASE-4510 Check and workaround usage of internal HDFS APIs in HBase - (Harsh) - HBASE-4595 HFilePrettyPrinter Scanned kv count always 0 (Matteo Bertozzi) - HBASE-4580 Some invalid zk nodes were created when a clean cluster restarts - (Gaojinchao) - HBASE-4588 The floating point arithmetic to validate memory allocation - configurations need to be done as integers (dhruba) - HBASE-4647 RAT finds about 40 files missing licenses - HBASE-4642 Add Apache License Header - HBASE-4591 TTL for old HLogs should be calculated from last modification time. - HBASE-4578 NPE when altering a table that has moving regions (gaojinchao) - HBASE-4070 Improve region server metrics to report loaded coprocessors to - master (Eugene Koontz via apurtell) - HBASE-3512 Shell support for listing currently loaded coprocessors (Eugene - Koontz via apurtell) - HBASE-4670 Fix javadoc warnings - HBASE-4367 Deadlock in MemStore flusher due to JDK internally synchronizing - on current thread - HBASE-4645 Edits Log recovery losing data across column families - HBASE-4634 "test.build.data" property overused leading to write data at the - wrong place (nkeywal) - HBASE-4388 Second start after migration from 90 to trunk crashes - HBASE-4685 TestDistributedLogSplitting.testOrphanLogCreation failing because - of ArithmeticException: / by zero. - HBASE-4300 Start of new-version master fails if old master's znode is - hanging around - HBASE-4679 Thrift null mutation error - HBASE-4304 requestsPerSecond counter stuck at 0 (Li Pi) - HBASE-4692 HBASE-4300 broke the build - HBASE-4641 Block cache can be mistakenly instantiated on Master (jgray) - HBASE-4687 regionserver may miss zk-heartbeats to master when replaying - edits at region open (prakash via jgray) - HBASE-4701 TestMasterObserver fails up on jenkins - HBASE-4700 TestSplitTransactionOnCluster fails on occasion when it tries - to move a region - HBASE-4613 hbase.util.Threads#threadDumpingIsAlive sleeps 1 second, - slowing down the shutdown by 0.5s - HBASE-4552 multi-CF bulk load is not atomic across column families (Jonathan Hsieh) - HBASE-4710 UnknownProtocolException should abort client retries - HBASE-4695 WAL logs get deleted before region server can fully flush - (gaojinchao) - HBASE-4708 Revert safemode related pieces of hbase-4510 (Harsh J) - HBASE-3515 [replication] ReplicationSource can miss a log after RS comes out of GC - HBASE-4713 Raise debug level to warn on ExecutionException in - HConnectionManager$HConnectionImplementation (Lucian George Iordache) - HBASE-4716 Improve locking for single column family bulk load - HBASE-4609 ThriftServer.getRegionInfo() is expecting old ServerName format, need to - use new Addressing class instead (Jonathan Gray) - HBASE-4719 HBase script assumes pre-Hadoop 0.21 layout of jar files - (Roman Shposhnik) - HBASE-4553 The update of .tableinfo is not atomic; we remove then rename - HBASE-4725 NPE in AM#updateTimers - HBASE-4745 LRU statistics thread should be a daemon - HBASE-4749 TestMasterFailover#testMasterFailoverWithMockedRITOnDeadRS - occasionally fails - HBASE-4753 org.apache.hadoop.hbase.regionserver.TestHRegionInfo#testGetSetOfHTD - throws NPE on trunk (nkeywal) - HBASE-4754 FSTableDescriptors.getTableInfoPath() should handle FileNotFoundException - HBASE-4740 [bulk load] the HBASE-4552 API can't tell if errors on region server are recoverable - (Jonathan Hsieh) - HBASE-4741 Online schema change doesn't return errors - HBASE-4734 [bulk load] Warn if bulk load directory contained no files - HBASE-4723 Loads of NotAllMetaRegionsOnlineException traces when starting - the master - HBASE-4511 There is data loss when master failovers - HBASE-4577 Region server reports storefileSizeMB bigger than - storefileUncompressedSizeMB (gaojinchao) - HBASE-4478 Improve AssignmentManager.handleRegion so that it can process certain ZK state - in the case of RS offline - HBASE-4777 Write back to client 'incompatible' if we show up with wrong version - HBASE-4775 Remove -ea from all but tests; enable it if you need it testing - HBASE-4784 Void return types not handled correctly for CoprocessorProtocol - methods - HBASE-4792 SplitRegionHandler doesn't care if it deletes the znode or not, - leaves the parent region stuck offline - HBASE-4793 HBase shell still using deprecated methods removed in HBASE-4436 - HBASE-4801 alter_status shell prints sensible message at completion - HBASE-4796 Race between SplitRegionHandlers for the same region kills the master - HBASE-4816 Regionserver wouldn't go down because split happened exactly at same - time we issued bulk user region close call on our way out - HBASE-4815 Disable online altering by default, create a config for it - HBASE-4623 Remove @deprecated Scan methods in 0.90 from TRUNK and 0.92 - HBASE-4842 [hbck] Fix intermittent failures on TestHBaseFsck.testHBaseFsck - (Jon Hsieh) - HBASE-4308 Race between RegionOpenedHandler and AssignmentManager (Ram) - HBASE-4857 Recursive loop on KeeperException in - AuthenticationTokenSecretManager/ZKLeaderManager - HBASE-4739 Master dying while going to close a region can leave it in transition - forever (Gao Jinchao) - HBASE-4855 SplitLogManager hangs on cluster restart due to batch.installed doubly counted - HBASE-4877 TestHCM failing sporadically on jenkins and always for me on an - ubuntu machine - HBASE-4878 Master crash when splitting hlog may cause data loss (Chunhui Shen) - HBASE-4945 NPE in HRegion.bulkLoadHFiles (Andrew P and Lars H) - HBASE-4942 HMaster is unable to start of HFile V1 is used (Honghua Zhu) - HBASE-4610 Port HBASE-3380 (Master failover can split logs of live servers) to 92/trunk - HBASE-4946 HTable.coprocessorExec (and possibly coprocessorProxy) does not work with - dynamically loaded coprocessors (Andrei Dragomir) - HBASE-5026 Add coprocessor hook to HRegionServer.ScannerListener.leaseExpired() - HBASE-4935 hbase 0.92.0 doesn't work going against 0.20.205.0, its packaged hadoop - HBASE-5078 DistributedLogSplitter failing to split file because it has edits for - lots of regions - HBASE-5077 SplitLogWorker fails to let go of a task, kills the RS - HBASE-5096 Replication does not handle deletes correctly. (Lars H) - HBASE-5103 Fix improper master znode deserialization (Jonathan Hsieh) - HBASE-5099 ZK event thread waiting for root region assignment may block server - shutdown handler for the region sever the root region was on (Jimmy) - HBASE-5100 Rollback of split could cause closed region to be opened again (Chunhui) - HBASE-4397 -ROOT-, .META. tables stay offline for too long in recovery phase after all RSs - are shutdown at the same time (Ming Ma) - HBASE-5094 The META can hold an entry for a region with a different server name from the one - actually in the AssignmentManager thus making the region inaccessible. (Ram) - HBASE-5081 Distributed log splitting deleteNode races against splitLog retry (Prakash) - HBASE-4357 Region stayed in transition - in closing state (Ming Ma) - HBASE-5088 A concurrency issue on SoftValueSortedMap (Jieshan Bean and Lars H) - HBASE-5152 Region is on service before completing initialization when doing rollback of split, - it will affect read correctness (Chunhui) - HBASE-5137 MasterFileSystem.splitLog() should abort even if waitOnSafeMode() throws IOException(Ted) - HBASE-5121 MajorCompaction may affect scan's correctness (chunhui shen and Lars H) - HBASE-5143 Fix config typo in pluggable load balancer factory (Harsh J) - HBASE-5196 Failure in region split after PONR could cause region hole (Jimmy Xiang) - - TESTS - HBASE-4450 test for number of blocks read: to serve as baseline for expected - blocks read and for catching regressions (Kannan) - HBASE-4492 TestRollingRestart fails intermittently (Ted Yu and Ram) - HBASE-4512 JVMClusterUtil throwing wrong exception when master thread cannot be created (Ram) - HBASE-4479 TestMasterFailover failure in Hbase-0.92#17(Ram) - HBASE-4651 ConcurrentModificationException might be thrown in - TestHCM.testConnectionUniqueness (Jinchao) - HBASE-4518 TestServerCustomProtocol fails intermittently - HBASE-4790 Occasional TestDistributedLogSplitting failure (Jinchao) - HBASE-4864 TestMasterObserver#testRegionTransitionOperations occasionally - fails (Gao Jinchao) - HBASE-4868 TestOfflineMetaRebuildBase#testMetaRebuild occasionally fails - (Gao Jinchao) - HBASE-4874 Run tests with non-secure random, some tests hang otherwise (Lars H) - HBASE-5112 TestReplication#queueFailover flaky due to potentially - uninitialized Scan (Jimmy Xiang) - HBASE-5113 TestDrainingServer expects round robin region assignment but misses a - config parameter - HBASE-5105 TestImportTsv failed with hadoop 0.22 (Ming Ma) - - IMPROVEMENTS - HBASE-3290 Max Compaction Size (Nicolas Spiegelberg via Stack) - HBASE-3292 Expose block cache hit/miss/evict counts into region server - metrics - HBASE-2936 Differentiate between daemon & restart sleep periods - HBASE-3316 Add support for Java Serialization to HbaseObjectWritable - (Ed Kohlwey via Stack) - HBASE-1861 Multi-Family support for bulk upload tools - HBASE-3308 SplitTransaction.splitStoreFiles slows splits a lot - HBASE-3328 Added Admin API to specify explicit split points - HBASE-3377 Upgrade Jetty to 6.1.26 - HBASE-3393 Update Avro gateway to use Avro 1.4.1 and the new - server.join() method (Jeff Hammerbacher via Stack) - HBASE-3433 KeyValue API to explicitly distinguish between deep & shallow - copies - HBASE-3522 Unbundle our RPC versioning; rather than a global for all 4 - Interfaces -- region, master, region to master, and - coprocesssors -- instead version each individually - HBASE-3520 Update our bundled hadoop from branch-0.20-append to latest - (rpc version 43) - HBASE-3563 [site] Add one-page-only version of hbase doc - HBASE-3564 DemoClient.pl - a demo client in Perl - HBASE-3560 the hbase-default entry of "hbase.defaults.for.version" - causes tests not to run via not-maven - HBASE-3513 upgrade thrift to 0.5.0 and use mvn version - HBASE-3533 Allow HBASE_LIBRARY_PATH env var to specify extra locations - of native lib - HBASE-3631 CLONE - HBase 2984 breaks ability to specify BLOOMFILTER & - COMPRESSION via shell - HBASE-3630 DemoClient.Java is outdated (Moaz Reyed via Stack) - HBASE-3618 Add to HBase book, 'schema' chapter - pre-creating regions and - key types (Doug Meil via Stack) - HBASE-2495 Allow record filtering with selected row key values in HBase - Export (Subbu M Iyer via Stack) - HBASE-3440 Clean out load_table.rb and make sure all roads lead to - completebulkload tool (Vidhyashankar Venkataraman via Stack) - HBASE-3653 Parallelize Server Requests on HBase Client - HBASE-3657 reduce copying of HRegionInfo's (Ted Yu via Stack) - HBASE-3422 Balancer will try to rebalance thousands of regions in one go; - needs an upper bound added (Ted Yu via Stack) - HBASE-3676 Update region server load for AssignmentManager through - regionServerReport() (Ted Yu via Stack) - HBASE-3468 Enhance checkAndPut and checkAndDelete with comparators - HBASE-3683 NMapInputFormat should use a different config param for - number of maps - HBASE-3673 Reduce HTable Pool Contention Using Concurrent Collections - (Karthick Sankarachary via Stack) - HBASE-3474 HFileOutputFormat to use column family's compression algorithm - HBASE-3541 REST Multi Gets (Elliott Clark via Stack) - HBASE-3052 Add ability to have multiple ZK servers in a quorum in - MiniZooKeeperCluster for test writing (Liyin Tang via Stack) - HBASE-3693 isMajorCompaction() check triggers lots of listStatus DFS RPC - calls from HBase (Liyin Tang via Stack) - HBASE-3717 deprecate HTable isTableEnabled() methods in favor of - HBaseAdmin methods (David Butler via Stack) - HBASE-3720 Book.xml - porting conceptual-view / physical-view sections of - HBaseArchitecture wiki (Doug Meil via Stack) - HBASE-3705 Allow passing timestamp into importtsv (Andy Sautins via Stack) - HBASE-3715 Book.xml - adding architecture section on client, adding section - on spec-ex under mapreduce (Doug Meil via Stack) - HBASE-3684 Support column range filter (Jerry Chen via Stack) - HBASE-3647 Distinguish read and write request count in region - (Ted Yu via Stack) - HBASE-3704 Show per region request count in table.jsp - (Ted Yu via Stack) - HBASE-3694 high multiput latency due to checking global mem store size - in a synchronized function (Liyin Tang via Stack) - HBASE-3710 Book.xml - fill out descriptions of metrics - (Doug Meil via Stack) - HBASE-3738 Book.xml - expanding Architecture Client section - (Doug Meil via Stack) - HBASE-3587 Eliminate use of read-write lock to guard loaded - coprocessor collection - HBASE-3729 Get cells via shell with a time range predicate - (Ted Yu via Stack) - HBASE-3764 Book.xml - adding 2 FAQs (SQL and arch question) - HBASE-3770 Make FilterList accept var arg Filters in its constructor - as a convenience (Erik Onnen via Stack) - HBASE-3769 TableMapReduceUtil is inconsistent with other table-related - classes that accept byte[] as a table name (Erik Onnen via Stack) - HBASE-3768 Add best practice to book for loading row key only - (Erik Onnen via Stack) - HBASE-3765 metrics.xml - small format change and adding nav to hbase - book metrics section (Doug Meil) - HBASE-3759 Eliminate use of ThreadLocals for CoprocessorEnvironment - bypass() and complete() - HBASE-3701 revisit ArrayList creation (Ted Yu via Stack) - HBASE-3753 Book.xml - architecture, adding more Store info (Doug Meil) - HBASE-3784 book.xml - adding small subsection in architecture/client on - filters (Doug Meil) - HBASE-3785 book.xml - moving WAL into architecture section, plus adding - more description on what it does (Doug Meil) - HBASE-3699 Make RegionServerServices and MasterServices extend Server - (Erik Onnen) - HBASE-3757 Upgrade to ZK 3.3.3 - HBASE-3609 Improve the selection of regions to balance; part 2 (Ted Yu) - HBASE-2939 Allow Client-Side Connection Pooling (Karthik Sankarachary) - HBASE-3798 [REST] Allow representation to elide row key and column key - HBASE-3812 Tidy up naming consistency and documentation in coprocessor - framework (Mingjie Lai) - HBASE-1512 Support aggregate functions (Himanshu Vashishtha) - HBASE-3796 Per-Store Enties in Compaction Queue - HBASE-3670 Fix error handling in get(List gets) - (Harsh J Chouraria) - HBASE-3835 Switch master and region server pages to Jamon-based templates - HBASE-3721 Speedup LoadIncrementalHFiles (Ted Yu) - HBASE-3855 Performance degradation of memstore because reseek is linear - (dhruba borthakur) - HBASE-3797 StoreFile Level Compaction Locking - HBASE-1476 Multithreaded Compactions - HBASE-3877 Determine Proper Defaults for Compaction ThreadPools - HBASE-3880 Make mapper function in ImportTSV plug-able (Bill Graham) - HBASE-2938 HBASE-2938 Add Thread-Local Behavior To HTable Pool - (Karthick Sankarachary) - HBASE-3811 Allow adding attributes to Scan (Alex Baranau) - HBASE-3841 HTable and HTableInterface docs are inconsistent with - one another (Harsh J Chouraria) - HBASE-2937 Facilitate Timeouts In HBase Client (Karthick Sankarachary) - HBASE-3921 Allow adding arbitrary blobs to Put (dhruba borthakur) - HBASE-3931 Allow adding attributes to Get - HBASE-3942 The thrift scannerOpen functions should support row caching - (Adam Worthington) - HBASE-2556 Add convenience method to HBaseAdmin to get a collection of - HRegionInfo objects for each table (Ming Ma) - HBASE-3952 Guava snuck back in as a dependency via hbase-3777 - HBASE-3808 Implement Executor.toString for master handlers at least - (Brock Noland) - HBASE-3873 Mavenize Hadoop Snappy JAR/SOs project dependencies - (Alejandro Abdelnur) - HBASE-3941 "hbase version" command line should print version info - (Jolly Chen) - HBASE-3961 Add Delete.setWriteToWAL functionality (Bruno Dumon) - HBASE-3928 Some potential performance improvements to Bytes/KeyValue - HBASE-3982 Improvements to TestHFileSeek - HBASE-3940 HBase daemons should log version info at startup and possibly - periodically (Li Pi) - HBASE-3789 Cleanup the locking contention in the master - HBASE-3927 Display total uncompressed byte size of a region in web UI - HBASE-4011 New MasterObserver hook: post startup of active master - HBASE-3994 SplitTransaction has a window where clients can - get RegionOfflineException - HBASE-4010 HMaster.createTable could be heavily optimized - HBASE-3506 Ability to disable, drop and enable tables using regex expression - (Joey Echeverria via Ted Yu) - HBASE-3516 Coprocessors: add test cases for loading coprocessor jars - (Mingjie Lai via garyh) - HBASE-4036 Implementing a MultipleColumnPrefixFilter (Anirudh Todi) - HBASE-4048 [Coprocessors] Support configuration of coprocessor at load time - HBASE-3240 Improve documentation of importtsv and bulk loads. - (Aaron T. Myers via todd) - HBASE-4054 Usability improvement to HTablePool (Daniel Iancu) - HBASE-4079 HTableUtil - helper class for loading data (Doug Meil via Ted Yu) - HBASE-3871 Speedup LoadIncrementalHFiles by parallelizing HFile splitting - HBASE-4081 Issues with HRegion.compactStores methods (Ming Ma) - HBASE-3465 Hbase should use a HADOOP_HOME environment variable if available - (Alejandro Abdelnur) - HBASE-3899 enhance HBase RPC to support free-ing up server handler threads - even if response is not ready (Vlad Dogaru) - HBASE-4142 Advise against large batches in javadoc for HTable#put(List) - HBASE-4139 [stargate] Update ScannerModel with support for filter package - additions - HBASE-1938 Make in-memory table scanning faster (nkeywal) - HBASE-4143 HTable.doPut(List) should check the writebuffer length every so often - (Doug Meil via Ted Yu) - HBASE-3065 Retry all 'retryable' zk operations; e.g. connection loss (Liyin Tang) - HBASE-3810 Registering a coprocessor in HTableDescriptor should be easier - (Mingjie Lai via garyh) - HBASE-4158 Upgrade pom.xml to surefire 2.9 (Aaron Kushner & Mikhail) - HBASE-3899 Add ability for delayed RPC calls to set return value - immediately at call return. (Vlad Dogaru via todd) - HBASE-4169 FSUtils LeaseRecovery for non HDFS FileSystems (Lohit Vijayarenu) - HBASE-3807 Fix units in RS UI metrics (subramanian raghunathan) - HBASE-4193 Enhance RPC debug logging to provide more details on - call contents - HBASE-4190 Coprocessors: pull up some cp constants from cp package to - o.a.h.h.HConstants (Mingjie Lai) - HBASE-4227 Modify the webUI so that default values of column families are - not shown (Nileema Shingte) - HBASE-4229 Replace Jettison JSON encoding with Jackson in HLogPrettyPrinter - (Riley Patterson) - HBASE-4230 Compaction threads need names - HBASE-4236 Don't lock the stream while serializing the response (Benoit Sigoure) - HBASE-4237 Directly remove the call being handled from the map of outstanding RPCs - (Benoit Sigoure) - HBASE-4199 blockCache summary - backend (Doug Meil) - HBASE-4240 Allow Loadbalancer to be pluggable - HBASE-4244 Refactor bin/hbase help - HBASE-4241 Optimize flushing of the Memstore (Lars Hofhansl) - HBASE-4248 Enhancements for Filter Language exposing HBase filters through - the Thrift API (Anirudh Todi) - HBASE-3900 Expose progress of a major compaction in UI and/or in shell - (Brad Anderson) - HBASE-4291 Improve display of regions in transition in UI to be more - readable (todd) - HBASE-4281 Add facility to dump current state of all executors (todd) - HBASE-4275 RS should communicate fatal "aborts" back to the master (todd) - HBASE-4263 New config property for user-table only RegionObservers - (Lars Hofhansl) - HBASE-4257 Limit the number of regions in transitions displayed on - master webpage. (todd) - HBASE-1730 Online Schema Changes - HBASE-4206 jenkins hash implementation uses longs unnecessarily - (Ron Yang) - HBASE-3842 Refactor Coprocessor Compaction API - HBASE-4312 Deploy new hbase logo - HBASE-4327 Compile HBase against hadoop 0.22 (Joep Rottinghuis) - HBASE-4339 Improve eclipse documentation and project file generation - (Eric Charles) - HBASE-4342 Update Thrift to 0.7.0 (Moaz Reyad) - HBASE-4260 Expose a command to manually trigger an HLog roll - (ramkrishna.s.vasudevan) - HBASE-4347 Remove duplicated code from Put, Delete, Get, Scan, MultiPut - (Lars Hofhansl) - HBASE-4359 Show dead RegionServer names in the HMaster info page - (Harsh J) - HBASE-4287 If region opening fails, change region in transition into - a FAILED_OPEN state so that it can be retried quickly. (todd) - HBASE-4381 Refactor split decisions into a split policy class. (todd) - HBASE-4373 HBaseAdmin.assign() does not use force flag (Ramkrishna) - HBASE-4425 Provide access to RpcServer instance from RegionServerServices - HBASE-4411 When copying tables/CFs, allow CF names to be changed - (David Revell) - HBASE-4424 Provide coprocessors access to createTable() via - MasterServices - HBASE-4432 Enable/Disable off heap cache with config (Li Pi) - HBASE-4434 seek optimization: don't do eager HFile Scanner - next() unless the next KV is needed - (Kannan Muthukkaruppan) - HBASE-4280 [replication] ReplicationSink can deadlock itself via handlers - HBASE-4014 Coprocessors: Flag the presence of coprocessors in logged - exceptions (Eugene Koontz) - HBASE-4449 LoadIncrementalHFiles should be able to handle CFs with blooms - (David Revell) - HBASE-4454 Add failsafe plugin to build and rename integration tests - (Jesse Yates) - HBASE-4499 [replication] Source shouldn't update ZK if it didn't progress - (Chris Trezzo via JD) - HBASE-2794 Utilize ROWCOL bloom filter if multiple columns within same family - are requested in a Get (Mikhail Bautin) - HBASE-4487 The increment operation can release the rowlock before sync-ing - the Hlog (dhruba borthakur) - HBASE-4526 special case for stopping master in hbase-daemon.sh is no longer - required (Roman Shaposhnik) - HBASE-4520 Better handling of Bloom filter type discrepancy between HFile - and CF config (Mikhail Bautin) - HBASE-4558 Refactor TestOpenedRegionHandler and TestOpenRegionHandler.(Ram) - HBASE-4558 Addendum for TestMasterFailover (Ram) - Breaks the build - HBASE-4568 Make zk dump jsp response faster - HBASE-4606 Remove spam in HCM and fix a list.size == 0 - HBASE-3581 hbase rpc should send size of response - HBASE-4585 Avoid seek operation when current kv is deleted(Liyin Tang) - HBASE-4486 Improve Javadoc for HTableDescriptor (Akash Ashok) - HBASE-4604 hbase.client.TestHTablePool could start a single - cluster instead of one per method (nkeywal) - HBASE-3929 Add option to HFile tool to produce basic stats (Matteo - Bertozzi and todd via todd) - HBASE-4694 Some cleanup of log messages in RS and M - HBASE-4603 Uneeded sleep time for tests in - hbase.master.ServerManager#waitForRegionServers (nkeywal) - HBASE-4703 Improvements in tests (nkeywal) - HBASE-4611 Add support for Phabricator/Differential as an alternative code review tool - HBASE-3939 Some crossports of Hadoop IPC fixes - HBASE-4756 Enable tab-completion in HBase shell (Ryan Thiessen) - HBASE-4759 Migrate from JUnit 4.8.2 to JUnit 4.10 (nkeywal) - HBASE-4554 Allow set/unset coprocessor table attributes from shell - (Mingjie Lai) - HBASE-4779 TestHTablePool, TestScanWithBloomError, TestRegionSplitCalculator are - not tagged and TestPoolMap should not use TestSuite (N Keywal) - HBASE-4805 Allow better control of resource consumption in HTable (Lars H) - HBASE-4903 Return a result from RegionObserver.preIncrement - (Daniel Gómez Ferro via Lars H) - HBASE-4683 Always cache index and bloom blocks - - TASKS - HBASE-3559 Move report of split to master OFF the heartbeat channel - HBASE-3573 Move shutdown messaging OFF hearbeat; prereq for fix of - hbase-1502 - HBASE-3071 Graceful decommissioning of a regionserver - HBASE-3970 Address HMaster crash/failure half way through meta migration - (Subbu M Iyer) - HBASE-4013 Make ZooKeeperListener Abstract (Akash Ashok via Ted Yu) - HBASE-4025 Server startup fails during startup due to failure in loading - all table descriptors. (Subbu Iyer via Ted Yu) - HBASE-4017 BlockCache interface should be truly modular (Li Pi) - HBASE-4152 Rename o.a.h.h.regionserver.wal.WALObserver to - o.a.h.h.regionserver.wal.WALActionsListener - HBASE-4039 Users should be able to choose custom TableInputFormats without - modifying TableMapReduceUtil.initTableMapperJob() (Brock Noland) - HBASE-4185 Add doc for new hfilev2 format - HBASE-4315 RS requestsPerSecond counter seems to be off (subramanian raghunathan) - HBASE-4289 Move spinlock to SingleSizeCache rather than the slab allocator - (Li Pi) - HBASE-4296 Deprecate HTable[Interface].getRowOrBefore(...) (Lars Hofhansl) - HBASE-2195 Support cyclic replication (Lars Hofhansl) - HBASE-2196 Support more than one slave cluster (Lars Hofhansl) - HBASE-4429 Provide synchronous balanceSwitch() - HBASE-4437 Update hadoop in 0.92 (0.20.205?) - HBASE-4656 Note how dfs.support.append has to be enabled in 0.20.205.0 - clusters - HBASE-4699 Cleanup the UIs - HBASE-4552 Remove trivial 0.90 deprecated code from 0.92 and trunk. - (Jonathan Hsieh) - HBASE-4714 Don't ship w/ icms enabled by default - HBASE-4747 Upgrade maven surefire plugin to 2.10 - HBASE-4288 "Server not running" exception during meta verification causes RS abort - HBASE-4856 Upgrade zookeeper to 3.4.0 release - HBASE-5111 Upgrade zookeeper to 3.4.2 release - HBASE-5125 Upgrade hadoop to 1.0.0 - - NEW FEATURES - HBASE-2001 Coprocessors: Colocate user code with regions (Mingjie Lai via - Andrew Purtell) - HBASE-3287 Add option to cache blocks on hfile write and evict blocks on - hfile close - HBASE-3335 Add BitComparator for filtering (Nathaniel Cook via Stack) - HBASE-3260 Coprocessors: Add explicit lifecycle management - HBASE-3256 Coprocessors: Coprocessor host and observer for HMaster - HBASE-3345 Coprocessors: Allow observers to completely override base - function - HBASE-2824 A filter that randomly includes rows based on a configured - chance (Ferdy via Andrew Purtell) - HBASE-3455 Add memstore-local allocation buffers to combat heap - fragmentation in the region server. Enabled by default as of - 0.91 - HBASE-3257 Coprocessors: Extend server side API to include HLog operations - (Mingjie Lai via Andrew Purtell) - HBASE-3606 Create an package integration project (Eric Yang via Ryan) - HBASE-3488 Add CellCounter to count multiple versions of rows - (Subbu M. Iyer via Stack) - HBASE-1364 [performance] Distributed splitting of regionserver commit logs - (Prakash Khemani) - HBASE-3836 Add facility to track currently progressing actions and - workflows. (todd) - HBASE-3837 Show regions in transition on the master web page (todd) - HBASE-3839 Add monitoring of currently running tasks to the master and - RS web UIs - HBASE-3691 Add compressor support for 'snappy', google's compressor - (Nichole Treadway and Nicholas Telford) - HBASE-2233 Support both Hadoop 0.20 and 0.22 - HBASE-3857 Change the HFile Format (Mikhail & Liyin) - HBASE-4114 Metrics for HFile HDFS block locality (Ming Ma) - HBASE-4176 Exposing HBase Filters to the Thrift API (Anirudh Todi) - HBASE-4221 Changes necessary to build and run against Hadoop 0.23 - (todd) - HBASE-4071 Data GC: Remove all versions > TTL EXCEPT the last - written version (Lars Hofhansl) - HBASE-4242 Add documentation for HBASE-4071 (Lars Hofhansl) - HBASE-4027 Enable direct byte buffers LruBlockCache (Li Pi) - HBASE-4117 Slow Query Log and Client Operation Fingerprints - (Riley Patterson) - HBASE-4292 Add a debugging dump servlet to the master and regionserver - (todd) - HBASE-4057 Implement HBase version of "show processlist" (Riley Patterson) - HBASE-4219 Per Column Family Metrics - HBASE-4219 Addendum for failure of TestHFileBlock - HBASE-4377 [hbck] Offline rebuild .META. from fs data only - (Jonathan Hsieh) - HBASE-4298 Support to drain RS nodes through ZK (Aravind Gottipati) - HBASE-2742 Provide strong authentication with a secure RPC engine - HBASE-3025 Coprocessor based access control - -Release 0.90.7 - Unreleased - - BUG FIXES - HBASE-5271 Result.getValue and Result.getColumnLatest return the wrong column (Ghais Issa) - -Release 0.90.6 - Unreleased - - BUG FIXES - HBASE-4970 Add a parameter so that keepAliveTime of Htable thread pool can be changed (gaojinchao) - HBASE-5060 HBase client is blocked forever (Jinchao) - HBASE-5009 Failure of creating split dir if it already exists prevents splits from happening further - HBASE-5041 Major compaction on non existing table does not throw error (Shrijeet) - HBASE-5327 Print a message when an invalid hbase.rootdir is passed (Jimmy Xiang) - -Release 0.90.5 - Released - - BUG FIXES - HBASE-4160 HBase shell move and online may be unusable if region name - or server includes binary-encoded data (Jonathan Hsieh) - HBASE-4168 A client continues to try and connect to a powered down - regionserver (Anirudh Todi) - HBASE-4196 TableRecordReader may skip first row of region (Ming Ma) - HBASE-4170 createTable java doc needs to be improved (Mubarak Seyed) - HBASE-4144 RS does not abort if the initialization of RS fails - (ramkrishna.s.vasudevan) - HBASE-4148 HFileOutputFormat doesn't fill in TIMERANGE_KEY metadata - (Jonathan Hsieh) - HBASE-4159 HBaseServer - IPC Reader threads are not daemons (Douglas - Campbell) - HBASE-4095 Hlog may not be rolled in a long time if checkLowReplication's - request of LogRoll is blocked (Jieshan Bean) - HBASE-4253 TestScannerTimeOut.test3686a and TestHTablePool. - testReturnDifferentTable() failure because of using new - HTable(tablename) (ramkrishna.s.vasudevan) - HBASE-4124 ZK restarted while a region is being assigned, new active HM - re-assigns it but the RS warns 'already online on this server' - (Gaojinchao) - HBASE-4294 HLogSplitter sleeps with 1-second granularity (todd) - HBASE-4270 IOE ignored during flush-on-close causes dataloss - HBASE-4180 HBase should check the isSecurityEnabled flag before login - HBASE-4325 Improve error message when using STARTROW for meta scans - (Jonathan Hsieh) - HBASE-4238 CatalogJanitor can clear a daughter that split before - processing its parent - HBASE-4445 Not passing --config when checking if distributed mode or not - HBASE-4453 TestReplication failing up on builds.a.o because already - running zk with new format root servername - HBASE-4387 Error while syncing: DFSOutputStream is closed - (Lars Hofhansl) - HBASE-4295 rowcounter does not return the correct number of rows in - certain circumstances (David Revell) - HBASE-4515 User.getCurrent() can fail to initialize the current user - HBASE-4473 NPE when executors are down but events are still coming in - HBASE-4537 TestUser imports breaking build against secure Hadoop - HBASE-4501 [replication] Shutting down a stream leaves recovered - sources running - HBASE-4563 When error occurs in this.parent.close(false) of split, - the split region cannot write or read (bluedavy via Lars H) - HBASE-4570. Fix a race condition that could cause inconsistent results - from scans during concurrent writes. (todd and Jonathan Jsieh - via todd) - HBASE-4562 When split doing offlineParentInMeta encounters error, it'll - cause data loss (bluedavy via Lars H) - HBASE-4800 Result.compareResults is incorrect (James Taylor and Lars H) - HBASE-4848 TestScanner failing because hostname can't be null - HBASE-4862 Splitting hlog and opening region concurrently may cause data loss - (Chunhui Shen) - HBASE-4773 HBaseAdmin may leak ZooKeeper connections (Xufeng) - - IMPROVEMENT - HBASE-4205 Enhance HTable javadoc (Eric Charles) - HBASE-4222 Make HLog more resilient to write pipeline failures - HBASE-4293 More verbose logging in ServerShutdownHandler for meta/root - cases (todd) - HBASE-4276 AssignmentManager debug logs should be at INFO level for - META/ROOT regions (todd) - HBASE-4323 Add debug logging when AssignmentManager can't make a plan - for a region (todd) - HBASE-4313 Refactor TestHBaseFsck to make adding individual hbck tests - easier (Jonathan Hsieh) - HBASE-4272. Add -metaonly flag to hbck feature to only inspect and try - to repair META and ROOT. (todd) - HBASE-4321. Add a more comprehensive region split calculator for future use - in hbck. (Jonathan Hsieh) - HBASE-4384 Hard to tell what causes failure in CloseRegionHandler#getCurrentVersion - (Harsh J) - HBASE-4375 [hbck] Add region coverage visualization to hbck - (Jonathan Hsieh) - HBASE-4506 [hbck] Allow HBaseFsck to be instantiated without connecting - (Jonathan Hsieh) - HBASE-4509 [hbck] Improve region map output - (Jonathan Hsieh) - HBASE-4806 Fix logging message in HbaseObjectWritable - (Jonathan Hsieh via todd) - -Release 0.90.4 - August 10, 2011 - - BUG FIXES - HBASE-3878 Hbase client throws NoSuchElementException (Ted Yu) - HBASE-3881 Add disable balancer in graceful_stop.sh script - HBASE-3895 Fix order of parameters after HBASE-1511 - HBASE-3874 ServerShutdownHandler fails on NPE if a plan has a random - region assignment - HBASE-3902 Add Bytes.toBigDecimal and Bytes.toBytes(BigDecimal) - (Vaibhav Puranik) - HBASE-3820 Splitlog() executed while the namenode was in safemode may - cause data-loss (Jieshan Bean) - HBASE-3905 HBaseAdmin.createTableAsync() should check for invalid split - keys (Ted Yu) - HBASE-3908 TableSplit not implementing "hashCode" problem (Daniel Iancu) - HBASE-3915 Binary row keys in hbck and other miscellaneous binary key - display issues - HBASE-3914 ROOT region appeared in two regionserver's onlineRegions at - the same time (Jieshan Bean) - HBASE-3934 MemStoreFlusher.getMemStoreLimit() doesn't honor defaultLimit - (Ted Yu) - HBASE-3946 The splitted region can be online again while the standby - hmaster becomes the active one (Jieshan Bean) - HBASE-3916 Fix the default bind address of ThriftServer to be wildcard - instead of localhost. (Li Pi) - HBASE-3985 Same Region could be picked out twice in LoadBalance - (Jieshan Bean) - HBASE-3987 Fix a NullPointerException on a failure to load Bloom filter data - (Mikhail Bautin) - HBASE-3948 Improve split/compact result page for RegionServer status page - (Li Pi) - HBASE-3988 Infinite loop for secondary master (Liyin Tang) - HBASE-3995 HBASE-3946 broke TestMasterFailover - HBASE-2077 NullPointerException with an open scanner that expired causing - an immediate region server shutdown -- part 2. - HBASE-4005 close_region bugs - HBASE-4028 Hmaster crashes caused by splitting log. - (gaojinchao via Ted Yu) - HBASE-4035 Fix local-master-backup.sh - parameter order wrong - (Lars George via Ted Yu) - HBASE-4020 "testWritesWhileGetting" unit test needs to be fixed. - (Vandana Ayyalasomayajula via Ted Yu) - HBASE-3984 CT.verifyRegionLocation isn't doing a very good check, - can delay cluster recovery - HBASE-4045 [replication] NPE in ReplicationSource when ZK is gone - HBASE-4034 HRegionServer should be stopped even if no META regions - are hosted by the HRegionServer (Akash Ashok) - HBASE-4033 The shutdown RegionServer could be added to - AssignmentManager.servers again (Jieshan Bean) - HBASE-4088 npes in server shutdown - HBASE-3872 Hole in split transaction rollback; edits to .META. need - to be rolled back even if it seems like they didn't make it - HBASE-4101 Regionserver Deadlock (ramkrishna.s.vasudevan) - HBASE-4115 HBase shell assign and unassign unusable if region name - includes binary-encoded data (Ryan Brush) - HBASE-4126 Make timeoutmonitor timeout after 30 minutes instead of 3 - HBASE-4129 HBASE-3872 added a warn message 'CatalogJanitor: Daughter regiondir - does not exist' that is triggered though its often legit that daughter - is not present - - IMPROVEMENT - HBASE-3882 hbase-config.sh needs to be updated so it can auto-detects the - sun jre provided by RHEL6 (Roman Shaposhnik) - HBASE-3920 HLog hbase.regionserver.flushlogentries no longer supported - (Dave Latham) - HBASE-3919 More places output binary data to text (Dave Latham) - HBASE-3873 HBase IRB shell: Don't pretty-print the output when stdout - isn't a TTY (Benoît Sigoure) - HBASE-3969 Outdated data can not be cleaned in time (Zhou Shuaifeng) - HBASE-3968 HLog Pretty Printer (Riley Patterson) - -Release 0.90.3 - May 19th, 2011 - - BUG FIXES - HBASE-3746 Clean up CompressionTest to not directly reference - DistributedFileSystem (todd) - HBASE-3734 HBaseAdmin creates new configurations in getCatalogTracker - HBASE-3756 Can't move META or ROOT from shell - HBASE-3740 hbck doesn't reset the number of errors when retrying - HBASE-3744 createTable blocks until all regions are out of transition - (Ted Yu via Stack) - HBASE-3750 HTablePool.putTable() should call releaseHTableInterface() - for discarded tables (Ted Yu via garyh) - HBASE-3755 Catch zk's ConnectionLossException and augment error - message with more help - HBASE-3722 A lot of data is lost when name node crashed (gaojinchao) - HBASE-3771 All jsp pages don't clean their HBA - HBASE-3685 when multiple columns are combined with TimestampFilter, only - one column is returned (Jerry Chen) - HBASE-3708 createAndFailSilent is not so silent; leaves lots of logging - in ensemble logs (Dmitriy Ryaboy) - HBASE-3783 hbase-0.90.2.jar exists in hbase root and in 'lib/' - HBASE-3539 Improve shell help to reflect all possible options - (Harsh J Chouraria) - HBASE-3817 HBase Shell has an issue accepting FILTER for the 'scan' command. - (Harsh J Chouraria) - HBASE-3634 Fix JavaDoc for put(List puts) in HTableInterface - (Harsh J Chouraria) - HBASE-3749 Master can't exit when open port failed (gaojinchao) - HBASE-3794 TestRpcMetrics fails on machine where region server is running - (Alex Newman) - HBASE-3741 Make HRegionServer aware of the regions it's opening/closing - HBASE-3597 ageOfLastAppliedOp should update after cluster replication - failures - HBASE-3821 "NOT flushing memstore for region" keep on printing for half - an hour (zhoushuaifeng) - - IMPROVEMENTS - HBASE-3747 ReplicationSource should differanciate remote and local exceptions - HBASE-3652 Speed up tests by lowering some sleeps - HBASE-3767 Improve how HTable handles threads used for multi actions - HBASE-3795 Remove the "Cache hit for row" message - HBASE-3580 Remove RS from DeadServer when new instance checks in - HBASE-2470 Add Scan.setTimeRange() support in Shell (Harsh J Chouraria) - HBASE-3805 Log RegionState that are processed too late in the master - HBASE-3695 Some improvements to Hbck to test the entire region chain in - Meta and provide better error reporting (Marc Limotte) - HBASE-3813 Change RPC callQueue size from 'handlerCount * - MAX_QUEUE_SIZE_PER_HANDLER;' - HBASE-3860 HLog shouldn't create a new HBC when rolling - - TASKS - HBASE-3748 Add rolling of thrift/rest daemons to graceful_stop.sh script - HBASE-3846 Set RIT timeout higher - -Release 0.90.2 - 20110408 - - BUG FIXES - HBASE-3545 Possible liveness issue with MasterServerAddress in - HRegionServer getMaster (Greg Bowyer via Stack) - HBASE-3548 Fix type in documentation of pseudo distributed mode - HBASE-3553 HTable ThreadPoolExecutor does not properly initialize - for hbase.htable.threads.max threads - (Himanshu Vashishtha via garyh) - HBASE-3566 writeToWAL is not serialized for increment operation - HBASE-3576 MasterAddressTracker is registered to ZooKeeperWatcher twice - HBASE-3561 OPTS arguments are duplicated - HBASE-3572 memstore lab can leave half inited data structs (bad!) - HBASE-3589 test jar should not include mapred-queues.xml and - log4j.properties - HBASE-3593 DemoClient.cpp is outdated - HBASE-3591 completebulkload doesn't honor generic -D options - HBASE-3594 Rest server fails because of missing asm jar - HBASE-3582 Allow HMaster and HRegionServer to login from keytab - when on secure Hadoop - HBASE-3608 MemstoreFlusher error message doesnt include exception! - HBASE-1960 Master should wait for DFS to come up when creating - hbase.version; use alternate strategy for waiting for DNs - HBASE-3612 HBaseAdmin::isTableAvailable returns true when the table does - not exit - HBASE-3626 Update instructions in thrift demo files (Moaz Reyad via Stack) - HBASE-3633 ZKUtil::createSetData should only create a node when it - nonexists (Guanpeng Xu via Stack) - HBASE-3636 a bug about deciding whether this key is a new key for the ROWCOL - bloomfilter (Liyin Tang via Stack) - HBASE-3639 FSUtils.getRootDir should qualify path - HBASE-3648 [replication] failover is sloppy with znodes - HBASE-3613 NPE in MemStoreFlusher - HBASE-3650 HBA.delete can return too fast - HBASE-3659 Fix TestHLog to pass on newer versions of Hadoop - HBASE-3595 get_counter broken in shell - HBASE-3664 [replication] Adding a slave when there's none may kill the cluster - HBASE-3671 Split report before we finish parent region open; workaround - till 0.92; Race between split and OPENED processing - HBASE-3674 Treat ChecksumException as we would a ParseException splitting - logs; else we replay split on every restart - HBASE-3621 The timeout handler in AssignmentManager does an RPC while - holding lock on RIT; a big no-no (Ted Yu via Stack) - HBASE-3575 Update rename table script - HBASE-3687 Bulk assign on startup should handle a ServerNotRunningException - HBASE-3617 NoRouteToHostException during balancing will cause Master abort - (Ted Yu via Stack) - HBASE-3668 CatalogTracker.waitForMeta can wait forever and totally stall a RS - HBASE-3627 NPE in EventHandler when region already reassigned - HBASE-3660 HMaster will exit when starting with stale data in cached locations - such as -ROOT- or .META. - HBASE-3654 Weird blocking between getOnlineRegion and createRegionLoad - (Subbu M Iyer via Stack) - HBASE-3666 TestScannerTimeout fails occasionally - HBASE-3497 TableMapReduceUtil.initTableReducerJob broken due to setConf - method in TableOutputFormat - HBASE-3686 ClientScanner skips too many rows on recovery if using scanner - caching (Sean Sechrist via Stack) - - IMPROVEMENTS - HBASE-3542 MultiGet methods in Thrift - HBASE-3586 Improve the selection of regions to balance (Ted Yu via Andrew - Purtell) - HBASE-3603 Remove -XX:+HeapDumpOnOutOfMemoryError autodump of heap option - on OOME - HBASE-3285 Hlog recovery takes too much time - HBASE-3623 Allow non-XML representable separator characters in the ImportTSV tool - (Harsh J Chouraria via Stack) - HBASE-3620 Make HBCK utility faster - HBASE-3625 improve/fix support excluding Tests via Maven -D property - (Alejandro Abdelnur via todd) - HBASE-3437 Support Explict Split Points from the Shell - HBASE-3448 RegionSplitter, utility class to manually split tables - HBASE-3610 Improve RegionSplitter performance - HBASE-3496 HFile CLI Improvements - HBASE-3596 [replication] Wait a few seconds before transferring queues - HBASE-3600 Update our jruby to 1.6.0 - HBASE-3640 [replication] Transferring queues shouldn't be done inline with RS startup - HBASE-3658 Alert when heap is over committed (Subbu M Iyer via Stack) - HBASE-3681 Check the sloppiness of the region load before balancing (Ted Yu via JD) - HBASE-3703 hbase-config.sh needs to be updated so it can auto-detect - the sun jdk provided by RHEL6 (Bruno Mahe via todd) - -Release 0.90.1 - February 9th, 2011 - - NEW FEATURES - HBASE-3455 Add memstore-local allocation buffers to combat heap - fragmentation in the region server. Experimental / disabled - by default in 0.90.1 - - BUG FIXES - HBASE-3445 Master crashes on data that was moved from different host - HBASE-3449 Server shutdown handlers deadlocked waiting for META - HBASE-3456 Fix hardcoding of 20 second socket timeout down in HBaseClient - HBASE-3476 HFile -m option need not scan key values - (Prakash Khemani via Lars George) - HBASE-3481 max seq id in flushed file can be larger than its correct value - causing data loss during recovery - HBASE-3493 HMaster sometimes hangs during initialization due to missing - notify call (Bruno Dumon via Stack) - HBASE-3483 Memstore lower limit should trigger asynchronous flushes - HBASE-3494 checkAndPut implementation doesnt verify row param and writable - row are the same - HBASE-3416 For intra-row scanning, the update readers notification resets - the query matcher and can lead to incorrect behavior - HBASE-3495 Shell is failing on subsequent split calls - HBASE-3502 Can't open region because can't open .regioninfo because - AlreadyBeingCreatedException - HBASE-3501 Remove the deletion limit in LogCleaner - HBASE-3500 Documentation update for replicatio - HBASE-3419 If re-transition to OPENING during log replay fails, server - aborts. Instead, should just cancel region open. - HBASE-3524 NPE from CompactionChecker - HBASE-3531 When under global memstore pressure, dont try to flush - unflushable regions. - HBASE-3550 FilterList reports false positives (Bill Graham via Andrew - Purtell) - - IMPROVEMENTS - HBASE-3305 Allow round-robin distribution for table created with - multiple regions (ted yu via jgray) - HBASE-3508 LruBlockCache statistics thread should have a name - HBASE-3511 Allow rolling restart to apply to only RS or only masters - HBASE-3510 Add thread name for IPC reader threads - HBASE-3509 Add metric for flush queue length - HBASE-3517 Store build version in hbase-default.xml and verify at runtime - -Release 0.90.0 - January 19th, 2011 - INCOMPATIBLE CHANGES - HBASE-1822 Remove the deprecated APIs - HBASE-1848 Fixup shell for HBASE-1822 - HBASE-1854 Remove the Region Historian - HBASE-1930 Put.setTimeStamp misleading (doesn't change timestamp on - existing KeyValues, not copied in copy constructor) - (Dave Latham via Stack) - HBASE-1360 move up to Thrift 0.2.0 (Kay Kay and Lars Francke via Stack) - HBASE-2212 Refactor out lucene dependencies from HBase - (Kay Kay via Stack) - HBASE-2219 stop using code mapping for method names in the RPC - HBASE-1728 Column family scoping and cluster identification - HBASE-2099 Move build to Maven (Paul Smith via Stack) - HBASE-2260 Remove all traces of Ant and Ivy (Lars Francke via Stack) - HBASE-2255 take trunk back to hadoop 0.20 - HBASE-2378 Bulk insert with multiple reducers broken due to improper - ImmutableBytesWritable comparator (Todd Lipcon via Stack) - HBASE-2392 Upgrade to ZooKeeper 3.3.0 - HBASE-2294 Enumerate ACID properties of HBase in a well defined spec - (Todd Lipcon via Stack) - HBASE-2541 Remove transactional contrib (Clint Morgan via Stack) - HBASE-2542 Fold stargate contrib into core - HBASE-2565 Remove contrib module from hbase - HBASE-2397 Bytes.toStringBinary escapes printable chars - HBASE-2771 Update our hadoop jar to be latest from 0.20-append branch - HBASE-2803 Remove remaining Get code from Store.java,etc - HBASE-2553 Revisit IncrementColumnValue implementation in 0.22 - HBASE-2692 Master rewrite and cleanup for 0.90 - (Karthik Ranganathan, Jon Gray & Stack) - HBASE-2961 Close zookeeper when done with it (HCM, Master, and RS) - HBASE-2641 HBASE-2641 Refactor HLog splitLog, hbase-2437 continued; - break out split code as new classes - (James Kennedy via Stack) - - BUG FIXES - HBASE-1791 Timeout in IndexRecordWriter (Bradford Stephens via Andrew - Purtell) - HBASE-1737 Regions unbalanced when adding new node (recommit) - HBASE-1792 [Regression] Cannot save timestamp in the future - HBASE-1793 [Regression] HTable.get/getRow with a ts is broken - HBASE-1698 Review documentation for o.a.h.h.mapreduce - HBASE-1798 [Regression] Unable to delete a row in the future - HBASE-1790 filters are not working correctly (HBASE-1710 HBASE-1807 too) - HBASE-1779 ThriftServer logged error if getVer() result is empty - HBASE-1778 Improve PerformanceEvaluation (Schubert Zhang via Stack) - HBASE-1751 Fix KeyValue javadoc on getValue for client-side - HBASE-1795 log recovery doesnt reset the max sequence id, new logfiles can - get tossed as 'duplicates' - HBASE-1794 recovered log files are not inserted into the storefile map - HBASE-1824 [stargate] default timestamp should be LATEST_TIMESTAMP - HBASE-1740 ICV has a subtle race condition only visible under high load - HBASE-1808 [stargate] fix how columns are specified for scanners - HBASE-1828 CompareFilters are broken from client-side - HBASE-1836 test of indexed hbase broken - HBASE-1838 [javadoc] Add javadoc to Delete explaining behavior when no - timestamp provided - HBASE-1821 Filtering by SingleColumnValueFilter bug - HBASE-1840 RowLock fails when used with IndexTable - (Keith Thomas via Stack) - HBASE-818 HFile code review and refinement (Schubert Zhang via Stack) - HBASE-1830 HbaseObjectWritable methods should allow null HBCs - for when Writable is not Configurable (Stack via jgray) - HBASE-1847 Delete latest of a null qualifier when non-null qualifiers - exist throws a RuntimeException - HBASE-1850 src/examples/mapred do not compile after HBASE-1822 - HBASE-1853 Each time around the regionserver core loop, we clear the - messages to pass master, even if we failed to deliver them - HBASE-1815 HBaseClient can get stuck in an infinite loop while attempting - to contact a failed regionserver - HBASE-1856 HBASE-1765 broke MapReduce when using Result.list() - (Lars George via Stack) - HBASE-1857 WrongRegionException when setting region online after .META. - split (Cosmin Lehane via Stack) - HBASE-1809 NPE thrown in BoundedRangeFileInputStream - HBASE-1859 Misc shell fixes patch (Kyle Oba via Stack) - HBASE-1865 0.20.0 TableInputFormatBase NPE - HBASE-1866 Scan(Scan) copy constructor does not copy value of - cacheBlocks - HBASE-1869 IndexedTable delete fails when used in conjunction with - RowLock (Keith Thomas via Stack) - HBASE-1858 Master can't split logs created by THBase (Clint Morgan via - Andrew Purtell) - HBASE-1871 Wrong type used in TableMapReduceUtil.initTableReduceJob() - (Lars George via Stack) - HBASE-1883 HRegion passes the wrong minSequenceNumber to - doReconstructionLog (Clint Morgan via Stack) - HBASE-1878 BaseScanner results can't be trusted at all (Related to - hbase-1784) - HBASE-1831 Scanning API must be reworked to allow for fully functional - Filters client-side - HBASE-1890 hbase-1506 where assignment is done at regionserver doesn't - work - HBASE-1889 ClassNotFoundException on trunk for REST - HBASE-1905 Remove unused config. hbase.hstore.blockCache.blockSize - HBASE-1906 FilterList of prefix and columnvalue not working properly with - deletes and multiple values - HBASE-1896 WhileMatchFilter.reset should call encapsulated filter reset - HBASE-1912 When adding a secondary index to an existing table, it will - cause NPE during re-indexing (Mingjui Ray Liao via Andrew - Purtell) - HBASE-1916 FindBugs and javac warnings cleanup - HBASE-1908 ROOT not reassigned if only one regionserver left - HBASE-1915 HLog.sync is called way too often, needs to be only called one - time per RPC - HBASE-1777 column length is not checked before saved to memstore - HBASE-1925 IllegalAccessError: Has not been initialized (getMaxSequenceId) - HBASE-1929 If hbase-default.xml is not in CP, zk session timeout is 10 - seconds! - HBASE-1927 Scanners not closed properly in certain circumstances - HBASE-1934 NullPointerException in ClientScanner (Andrew Purtell via Stack) - HBASE-1946 Unhandled exception at regionserver (Dmitriy Lyfar via Stack) - HBASE-1682 IndexedRegion does not properly handle deletes - (Andrew McCall via Clint Morgan and Stack) - HBASE-1953 Overhaul of overview.html (html fixes, typos, consistency) - - no content changes (Lars Francke via Stack) - HBASE-1954 Transactional scans do not see newest put (Clint Morgan via - Stack) - HBASE-1919 code: HRS.delete seems to ignore exceptions it shouldnt - HBASE-1951 Stack overflow when calling HTable.checkAndPut() - when deleting a lot of values - HBASE-1781 Weird behavior of WildcardColumnTracker.checkColumn(), - looks like recursive loop - HBASE-1949 KeyValue expiration by Time-to-Live during major compaction is - broken (Gary Helmling via Stack) - HBASE-1957 Get-s can't set a Filter - HBASE-1928 ROOT and META tables stay in transition state (making the system - not usable) if the designated regionServer dies before the - assignment is complete (Yannis Pavlidis via Stack) - HBASE-1962 Bulk loading script makes regions incorrectly (loadtable.rb) - HBASE-1966 Apply the fix from site/ to remove the forrest dependency on - Java 5 - HBASE-1967 [Transactional] client.TestTransactions.testPutPutScan fails - sometimes -- Temporary fix - HBASE-1841 If multiple of same key in an hfile and they span blocks, may - miss the earlier keys on a lookup - (Schubert Zhang via Stack) - HBASE-1977 Add ts and allow setting VERSIONS when scanning in shell - HBASE-1979 MurmurHash does not yield the same results as the reference C++ - implementation when size % 4 >= 2 (Olivier Gillet via Andrew - Purtell) - HBASE-1999 When HTable goes away, close zk session in shutdown hook or - something... - HBASE-1997 zk tick time bounds maximum zk session time - HBASE-2003 [shell] deleteall ignores column if specified - HBASE-2018 Updates to .META. blocked under high MemStore load - HBASE-1994 Master will lose hlog entries while splitting if region has - empty oldlogfile.log (Lars George via Stack) - HBASE-2022 NPE in housekeeping kills RS - HBASE-2034 [Bulk load tools] loadtable.rb calls an undefined method - 'descendingIterator' (Ching-Shen Chen via Stack) - HBASE-2033 Shell scan 'limit' is off by one - HBASE-2040 Fixes to group commit - HBASE-2047 Example command in the "Getting Started" - documentation doesn't work (Benoit Sigoure via JD) - HBASE-2048 Small inconsistency in the "Example API Usage" - (Benoit Sigoure via JD) - HBASE-2044 HBASE-1822 removed not-deprecated APIs - HBASE-1960 Master should wait for DFS to come up when creating - hbase.version - HBASE-2054 memstore size 0 is >= than blocking -2.0g size - HBASE-2064 Cannot disable a table if at the same the Master is moving - its regions around - HBASE-2065 Cannot disable a table if any of its region is opening - at the same time - HBASE-2026 NPE in StoreScanner on compaction - HBASE-2072 fs.automatic.close isn't passed to FileSystem - HBASE-2075 Master requires HDFS superuser privileges due to waitOnSafeMode - HBASE-2077 NullPointerException with an open scanner that expired causing - an immediate region server shutdown (Sam Pullara via JD) - HBASE-2078 Add JMX settings as commented out lines to hbase-env.sh - (Lars George via JD) - HBASE-2082 TableInputFormat is ignoring input scan's stop row setting - (Scott Wang via Andrew Purtell) - HBASE-2068 MetricsRate is missing "registry" parameter - (Lars George and Gary Helmling via Stack) - HBASE-2093 [stargate] RowSpec parse bug - HBASE-2114 Can't start HBase in trunk (JD and Kay Kay via JD) - HBASE-2115 ./hbase shell would not launch due to missing jruby dependency - (Kay Kay via JD) - HBASE-2101 KeyValueSortReducer collapses all values to last passed - HBASE-2119 Fix top-level NOTICES.txt file. Its stale. - HBASE-2120 [stargate] Unable to delete column families (Greg Lu via Andrew - Purtell) - HBASE-2123 Remove 'master' command-line option from PE - HBASE-2024 [stargate] Deletes not working as expected (Greg Lu via Andrew - Purtell) - HBASE-2122 [stargate] Initializing scanner column families doesn't work - (Greg Lu via Andrew Purtell) - HBASE-2124 Useless exception in HMaster on startup - HBASE-2127 randomWrite mode of PerformanceEvaluation benchmark program - writes only to a small range of keys (Kannan Muthukkaruppan - via Stack) - HBASE-2126 Fix build break - ec2 (Kay Kay via JD) - HBASE-2134 Ivy nit regarding checking with latest snapshots (Kay Kay via - Andrew Purtell) - HBASE-2138 unknown metrics type (Stack via JD) - HBASE-2137 javadoc warnings from 'javadoc' target (Kay Kay via Stack) - HBASE-2135 ant javadoc complains about missing classe (Kay Kay via Stack) - HBASE-2130 bin/* scripts - not to include lib/test/**/*.jar - (Kay Kay via Stack) - HBASE-2140 findbugs issues - 2 performance warnings as suggested by - findbugs (Kay Kay via Stack) - HBASE-2139 findbugs task in build.xml (Kay Kay via Stack) - HBASE-2147 run zookeeper in the same jvm as master during non-distributed - mode - HBASE-65 Thrift Server should have an option to bind to ip address - (Lars Francke via Stack) - HBASE-2146 RPC related metrics are missing in 0.20.3 since recent changes - (Gary Helmling via Lars George) - HBASE-2150 Deprecated HBC(Configuration) constructor doesn't call this() - HBASE-2154 Fix Client#next(int) javadoc - HBASE-2152 Add default jmxremote.{access|password} files into conf - (Lars George and Gary Helmling via Stack) - HBASE-2156 HBASE-2037 broke Scan - only a test for trunk - HBASE-2057 Cluster won't stop (Gary Helmling and JD via JD) - HBASE-2160 Can't put with ts in shell - HBASE-2144 Now does \x20 for spaces - HBASE-2163 ZK dependencies - explicitly add them until ZK artifacts are - published to mvn repository (Kay Kay via Stack) - HBASE-2164 Ivy nit - clean up configs (Kay Kay via Stack) - HBASE-2184 Calling HTable.getTableDescriptor().* on a full cluster takes - a long time (Cristian Ivascu via Stack) - HBASE-2193 Better readability of - hbase.regionserver.lease.period - (Kay Kay via Stack) - HBASE-2199 hbase.client.tableindexed.IndexSpecification, lines 72-73 - should be reversed (Adrian Popescu via Stack) - HBASE-2224 Broken build: TestGetRowVersions.testGetRowMultipleVersions - HBASE-2129 ant tar build broken since switch to Ivy (Kay Kay via Stack) - HBASE-2226 HQuorumPeerTest doesnt run because it doesnt start with the - word Test - HBASE-2230 SingleColumnValueFilter has an ungaurded debug log message - HBASE-2258 The WhileMatchFilter doesn't delegate the call to filterRow() - HBASE-2259 StackOverflow in ExplicitColumnTracker when row has many columns - HBASE-2268 [stargate] Failed tests and DEBUG output is dumped to console - since move to Mavenized build - HBASE-2276 Hbase Shell hcd() method is broken by the replication scope - parameter (Alexey Kovyrin via Lars George) - HBASE-2244 META gets inconsistent in a number of crash scenarios - HBASE-2284 fsWriteLatency metric may be incorrectly reported - (Kannan Muthukkaruppan via Stack) - HBASE-2063 For hfileoutputformat, on timeout/failure/kill clean up - half-written hfile (Ruslan Salyakhov via Stack) - HBASE-2281 Hbase shell does not work when started from the build dir - (Alexey Kovyrin via Stack) - HBASE-2293 CME in RegionManager#isMetaServer - HBASE-2261 The javadoc in WhileMatchFilter and it's tests in TestFilter - are not accurate/wrong - HBASE-2299 [EC2] mapreduce fixups for PE - HBASE-2295 Row locks may deadlock with themselves - (dhruba borthakur via Stack) - HBASE-2308 Fix the bin/rename_table.rb script, make it work again - HBASE-2307 hbase-2295 changed hregion size, testheapsize broke... fix it - HBASE-2269 PerformanceEvaluation "--nomapred" may assign duplicate random - seed over multiple testing threads (Tatsuya Kawano via Stack) - HBASE-2287 TypeError in shell (Alexey Kovyrin via Stack) - HBASE-2023 Client sync block can cause 1 thread of a multi-threaded client - to block all others (Karthik Ranganathan via Stack) - HBASE-2305 Client port for ZK has no default (Suraj Varma via Stack) - HBASE-2323 filter.RegexStringComparator does not work with certain bytes - (Benoit Sigoure via Stack) - HBASE-2313 Nit-pick about hbase-2279 shell fixup, if you do get with - non-existant column family, throws lots of exceptions - (Alexey Kovyrin via Stack) - HBASE-2334 Slimming of Maven dependency tree - improves assembly build - speed (Paul Smith via Stack) - HBASE-2336 Fix build broken with HBASE-2334 (Lars Francke via Lars George) - HBASE-2283 row level atomicity (Kannan Muthukkaruppan via Stack) - HBASE-2355 Unsynchronized logWriters map is mutated from several threads in - HLog splitting (Todd Lipcon via Andrew Purtell) - HBASE-2358 Store doReconstructionLog will fail if oldlogfile.log is empty - and won't load region (Cosmin Lehene via Stack) - HBASE-2370 saveVersion.sh doesnt properly grab the git revision - HBASE-2373 Remove confusing log message of how "BaseScanner GET got - different address/startcode than SCAN" - HBASE-2361 WALEdit broke replication scope - HBASE-2365 Double-assignment around split - HBASE-2398 NPE in HLog.append when calling writer.getLength - (Kannan Muthukkaruppan via Stack) - HBASE-2410 spurious warnings from util.Sleeper - HBASE-2335 mapred package docs don't say zookeeper jar is a dependent - HBASE-2417 HCM.locateRootRegion fails hard on "Connection refused" - HBASE-2346 Usage of FilterList slows down scans - HBASE-2341 ZK settings for initLimit/syncLimit should not have been removed - from hbase-default.xml - HBASE-2439 HBase can get stuck if updates to META are blocked - (Kannan Muthukkaruppan via Stack) - HBASE-2451 .META. by-passes cache; BLOCKCACHE=>'false' - HBASE-2453 Revisit compaction policies after HBASE-2248 commit - (Jonathan Gray via Stack) - HBASE-2458 Client stuck in TreeMap,remove (Todd Lipcon via Stack) - HBASE-2460 add_table.rb deletes any tables for which the target table name - is a prefix (Todd Lipcon via Stack) - HBASE-2463 Various Bytes.* functions silently ignore invalid arguments - (Benoit Sigoure via Stack) - HBASE-2443 IPC client can throw NPE if socket creation fails - (Todd Lipcon via Stack) - HBASE-2447 LogSyncer.addToSyncQueue doesn't check if syncer is still - running before waiting (Todd Lipcon via Stack) - HBASE-2494 Does not apply new.name parameter to CopyTable - (Yoonsik Oh via Stack) - HBASE-2481 Client is not getting UnknownScannerExceptions; they are - being eaten (Jean-Daniel Cryans via Stack) - HBASE-2448 Scanner threads are interrupted without acquiring lock properly - (Todd Lipcon via Stack) - HBASE-2491 master.jsp uses absolute links to table.jsp. This broke when - master.jsp moved under webapps/master(Cristian Ivascu via Stack) - HBASE-2487 Uncaught exceptions in receiving IPC responses orphan clients - (Todd Lipcon via Stack) - HBASE-2497 ProcessServerShutdown throws NullPointerException for offline - regiond (Miklos Kurucz via Stack) - HBASE-2499 Race condition when disabling a table leaves regions in transition - HBASE-2489 Make the "Filesystem needs to be upgraded" error message more - useful (Benoit Sigoure via Stack) - HBASE-2482 regions in transition do not get reassigned by master when RS - crashes (Todd Lipcon via Stack) - HBASE-2513 hbase-2414 added bug where we'd tight-loop if no root available - HBASE-2503 PriorityQueue isn't thread safe, KeyValueHeap uses it that way - HBASE-2431 Master does not respect generation stamps, may result in meta - getting permanently offlined - HBASE-2515 ChangeTableState considers split&&offline regions as being served - HBASE-2544 Forward port branch 0.20 WAL to TRUNK - HBASE-2546 Specify default filesystem in both the new and old way (needed - if we are to run on 0.20 and 0.21 hadoop) - HBASE-1895 HConstants.MAX_ROW_LENGTH is incorrectly 64k, should be 32k - HBASE-1968 Give clients access to the write buffer - HBASE-2028 Add HTable.incrementColumnValue support to shell - (Lars George via Andrew Purtell) - HBASE-2138 unknown metrics type - HBASE-2551 Forward port fixes that are in branch but not in trunk (part of - the merge of old 0.20 into TRUNK task) -- part 1. - HBASE-2474 Bug in HBASE-2248 - mixed version reads (not allowed by spec) - HBASE-2509 NPEs in various places, HRegion.get, HRS.close - HBASE-2344 InfoServer and hence HBase Master doesn't fully start if you - have HADOOP-6151 patch (Kannan Muthukkaruppan via Stack) - HBASE-2382 Don't rely on fs.getDefaultReplication() to roll HLogs - (Nicolas Spiegelberg via Stack) - HBASE-2415 Disable META splitting in 0.20 (Todd Lipcon via Stack) - HBASE-2421 Put hangs for 10 retries on failed region servers - HBASE-2442 Log lease recovery catches IOException too widely - (Todd Lipcon via Stack) - HBASE-2457 RS gets stuck compacting region ad infinitum - HBASE-2562 bin/hbase doesn't work in-situ in maven - (Todd Lipcon via Stack) - HBASE-2449 Local HBase does not stop properly - HBASE-2539 Cannot start ZK before the rest in tests anymore - HBASE-2561 Scanning .META. while split in progress yields - IllegalArgumentException (Todd Lipcon via Stack) - HBASE-2572 hbase/bin/set_meta_block_caching.rb:72: can't convert - Java::JavaLang::String into String (TypeError) - little - issue with script - HBASE-2483 Some tests do not use ephemeral ports - HBASE-2573 client.HConnectionManager$TableServers logs non-printable - binary bytes (Benoît Sigoure via Stack) - HBASE-2576 TestHRegion.testDelete_mixed() failing on hudson - HBASE-2581 Bloom commit broke some tests... fix - HBASE-2582 TestTableSchemaModel not passing after commit of blooms - HBASE-2583 Make webapps work in distributed mode again and make webapps - deploy at / instead of at /webapps/master/master.jsp - HBASE-2590 Failed parse of branch element in saveVersion.sh - HBASE-2591 HBASE-2587 hardcoded the port that dfscluster runs on - HBASE-2519 StoreFileScanner.seek swallows IOEs (Todd Lipcon via Stack) - HBASE-2516 Ugly IOE when region is being closed; rather, should NSRE - (Daniel Ploeg via Stack) - HBASE-2589 TestHRegion.testWritesWhileScanning flaky on trunk - (Todd Lipcon via Stack) - HBASE-2590 Failed parse of branch element in saveVersion.sh - (Benoît Sigoure via Stack) - HBASE-2586 Move hbase webapps to a hbase-webapps dir (Todd Lipcon via - Andrew Purtell) - HBASE-2610 ValueFilter copy pasted javadoc from QualifierFilter - HBASE-2619 HBase shell 'alter' command cannot set table properties to False - (Christo Wilson via Stack) - HBASE-2621 Fix bad link to HFile documentation in javadoc - (Jeff Hammerbacher via Todd Lipcon) - HBASE-2371 Fix 'list' command in shell (Alexey Kovyrin via Todd Lipcon) - HBASE-2620 REST tests don't use ephemeral ports - HBASE-2635 ImmutableBytesWritable ignores offset in several cases - HBASE-2654 Add additional maven repository temporarily to fetch Guava - HBASE-2560 Fix IllegalArgumentException when manually splitting table - from web UI - HBASE-2657 TestTableResource is broken in trunk - HBASE-2662 TestScannerResource.testScannerResource broke in trunk - HBASE-2667 TestHLog.testSplit failing in trunk (Cosmin and Stack) - HBASE-2614 killing server in TestMasterTransitions causes NPEs and test deadlock - HBASE-2615 M/R on bulk imported tables - HBASE-2676 TestInfoServers should use ephemeral ports - HBASE-2616 TestHRegion.testWritesWhileGetting flaky on trunk - HBASE-2684 TestMasterWrongRS flaky in trunk - HBASE-2691 LeaseStillHeldException totally ignored by RS, wrongly named - HBASE-2703 ui not working in distributed context - HBASE-2710 Shell should use default terminal width when autodetection fails - (Kannan Muthukkaruppan via Todd Lipcon) - HBASE-2712 Cached region location that went stale won't recover if - asking for first row - HBASE-2732 TestZooKeeper was broken, HBASE-2691 showed it - HBASE-2670 Provide atomicity for readers even when new insert has - same timestamp as current row. - HBASE-2733 Replacement of LATEST_TIMESTAMP with real timestamp was broken - by HBASE-2353. - HBASE-2734 TestFSErrors should catch all types of exceptions, not just RTE - HBASE-2738 TestTimeRangeMapRed updated now that we keep multiple cells with - same timestamp in MemStore - HBASE-2725 Shutdown hook management is gone in trunk; restore - HBASE-2740 NPE in ReadWriteConsistencyControl - HBASE-2752 Don't retry forever when waiting on too many store files - HBASE-2737 CME in ZKW introduced in HBASE-2694 (Karthik Ranganathan via JD) - HBASE-2756 MetaScanner.metaScan doesn't take configurations - HBASE-2656 HMaster.getRegionTableClosest should not return null for closed - regions - HBASE-2760 Fix MetaScanner TableNotFoundException when scanning starting at - the first row in a table. - HBASE-1025 Reconstruction log playback has no bounds on memory used - HBASE-2757 Fix flaky TestFromClientSide test by forcing region assignment - HBASE-2741 HBaseExecutorService needs to be multi-cluster friendly - (Karthik Ranganathan via JD) - HBASE-2769 Fix typo in warning message for HBaseConfiguration - HBASE-2768 Fix teardown order in TestFilter - HBASE-2763 Cross-port HADOOP-6833 IPC parameter leak bug - HBASE-2758 META region stuck in RS2ZK_REGION_OPENED state - (Karthik Ranganathan via jgray) - HBASE-2767 Fix reflection in tests that was made incompatible by HDFS-1209 - HBASE-2617 Load balancer falls into pathological state if one server under - average - slop; endless churn - HBASE-2729 Interrupted or failed memstore flushes should not corrupt the - region - HBASE-2772 Scan doesn't recover from region server failure - HBASE-2775 Update of hadoop jar in HBASE-2771 broke TestMultiClusters - HBASE-2774 Spin in ReadWriteConsistencyControl eating CPU (load > 40) and - no progress running YCSB on clean cluster startup - HBASE-2785 TestScannerTimeout.test2772 is flaky - HBASE-2787 PE is confused about flushCommits - HBASE-2707 Can't recover from a dead ROOT server if any exceptions happens - during log splitting - HBASE-2501 Refactor StoreFile Code - HBASE-2806 DNS hiccups cause uncaught NPE in HServerAddress#getBindAddress - (Benoit Sigoure via Stack) - HBASE-2806 (small compile fix via jgray) - HBASE-2797 Another NPE in ReadWriteConsistencyControl - HBASE-2831 Fix '$bin' path duplication in setup scripts - (Nicolas Spiegelberg via Stack) - HBASE-2781 ZKW.createUnassignedRegion doesn't make sure existing znode is - in the right state (Karthik Ranganathan via JD) - HBASE-2727 Splits writing one file only is untenable; need dir of recovered - edits ordered by sequenceid - HBASE-2843 Readd bloomfilter test over zealously removed by HBASE-2625 - HBASE-2846 Make rest server be same as thrift and avro servers - HBASE-1511 Pseudo distributed mode in LocalHBaseCluster - (Nicolas Spiegelberg via Stack) - HBASE-2851 Remove testDynamicBloom() unit test - (Nicolas Spiegelberg via Stack) - HBASE-2853 TestLoadIncrementalHFiles fails on TRUNK - HBASE-2854 broken tests on trunk - HBASE-2859 Cleanup deprecated stuff in TestHLog (Alex Newman via Stack) - HBASE-2858 TestReplication.queueFailover fails half the time - HBASE-2863 HBASE-2553 removed an important edge case - HBASE-2866 Region permanently offlined - HBASE-2849 HBase clients cannot recover when their ZooKeeper session - becomes invalid (Benôit Sigoure via Stack) - HBASE-2876 HBase hbck: false positive error reported for parent regions - that are in offline state in meta after a split - HBASE-2815 not able to run the test suite in background because TestShell - gets suspended on tty output (Alexey Kovyrin via Stack) - HBASE-2852 Bloom filter NPE (pranav via jgray) - HBASE-2820 hbck throws an error if HBase root dir isn't on the default FS - HBASE-2884 TestHFileOutputFormat flaky when map tasks generate identical - data - HBASE-2890 Initialize RPC JMX metrics on startup (Gary Helmling via Stack) - HBASE-2755 Duplicate assignment of a region after region server recovery - (Kannan Muthukkaruppan via Stack) - HBASE-2892 Replication metrics aren't updated - HBASE-2461 Split doesn't handle IOExceptions when creating new region - reference files - HBASE-2871 Make "start|stop" commands symmetric for Master & Cluster - (Nicolas Spiegelberg via Stack) - HBASE-2901 HBASE-2461 broke build - HBASE-2823 Entire Row Deletes not stored in Row+Col Bloom - (Alexander Georgiev via Stack) - HBASE-2897 RowResultGenerator should handle NoSuchColumnFamilyException - HBASE-2905 NPE when inserting mass data via REST interface (Sandy Yin via - Andrew Purtell) - HBASE-2908 Wrong order of null-check [in TIF] (Libor Dener via Stack) - HBASE-2909 SoftValueSortedMap is broken, can generate NPEs - HBASE-2919 initTableReducerJob: Unused method parameter - (Libor Dener via Stack) - HBASE-2923 Deadlock between HRegion.internalFlushCache and close - HBASE-2927 BaseScanner gets stale HRegionInfo in some race cases - HBASE-2928 Fault in logic in BinaryPrefixComparator leads to - ArrayIndexOutOfBoundsException (pranav via jgray) - HBASE-2924 TestLogRolling doesn't use the right HLog half the time - HBASE-2931 Do not throw RuntimeExceptions in RPC/HbaseObjectWritable - code, ensure we log and rethrow as IOE - (Karthik Ranganathan via Stack) - HBASE-2915 Deadlock between HRegion.ICV and HRegion.close - HBASE-2920 HTable.checkAndPut/Delete doesn't handle null values - HBASE-2944 cannot alter bloomfilter setting for a column family from - hbase shell (Kannan via jgray) - HBASE-2948 bin/hbase shell broken (after hbase-2692) - (Sebastian Bauer via Stack) - HBASE-2954 Fix broken build caused by hbase-2692 commit - HBASE-2918 SequenceFileLogWriter doesnt make it clear if there is no - append by config or by missing lib/feature - HBASE-2799 "Append not enabled" warning should not show if hbase - root dir isn't on DFS - HBASE-2943 major_compact (and other admin commands) broken for .META. - HBASE-2643 Figure how to deal with eof splitting logs - (Nicolas Spiegelberg via Stack) - HBASE-2925 LRU of HConnectionManager.HBASE_INSTANCES breaks if - HBaseConfiguration is changed - (Robert Mahfoud via Stack) - HBASE-2964 Deadlock when RS tries to RPC to itself inside SplitTransaction - HBASE-1485 Wrong or indeterminate behavior when there are duplicate - versions of a column (pranav via jgray) - HBASE-2967 Failed split: IOE 'File is Corrupt!' -- sync length not being - written out to SequenceFile - HBASE-2969 missing sync in HTablePool.getTable() - (Guilherme Mauro Germoglio Barbosa via Stack) - HBASE-2973 NPE in LogCleaner - HBASE-2974 LoadBalancer ArithmeticException: / by zero - HBASE-2975 DFSClient names in master and RS should be unique - HBASE-2978 LoadBalancer IndexOutOfBoundsException - HBASE-2983 TestHLog unit test is mis-comparing an assertion - (Alex Newman via Todd Lipcon) - HBASE-2986 multi writable can npe causing client hang - HBASE-2979 Fix failing TestMultParrallel in hudson build - HBASE-2899 hfile.min.blocksize.size ignored/documentation wrong - HBASE-3006 Reading compressed HFile blocks causes way too many DFS RPC - calls severly impacting performance - (Kannan Muthukkaruppan via Stack) - HBASE-3010 Can't start/stop/start... cluster using new master - HBASE-3015 recovered.edits files not deleted if it only contain edits that - have already been flushed; hurts perf for all future opens of - the region - HBASE-3018 Bulk assignment on startup runs serially through the cluster - servers assigning in bulk to one at a time - HBASE-3023 NPE processing server crash in MetaReader. getServerUserRegions - HBASE-3024 NPE processing server crash in MetaEditor.addDaughter - HBASE-3026 Fixup of "missing" daughters on split is too aggressive - HBASE-3003 ClassSize constants dont use 'final' - HBASE-3002 Fix zookeepers.sh to work properly with strange JVM options - HBASE-3028 No basescanner means no GC'ing of split, offlined parent regions - HBASE-2989 [replication] RSM won't cleanup after locking if 0 peers - HBASE-2992 [replication] MalformedObjectNameException in ReplicationMetrics - HBASE-3037 When new master joins running cluster does "Received report from - unknown server -- telling it to STOP_REGIONSERVER. - HBASE-3039 Stuck in regionsInTransition because rebalance came in at same - time as a split - HBASE-3042 Use LO4J in SequenceFileLogReader - (Nicolas Spiegelberg via Stack) - HBASE-2995 Incorrect dependency on Log class from Jetty - HBASE-3038 WALReaderFSDataInputStream.getPos() fails if Filesize > MAX_INT - (Nicolas Spiegelberg via Stack) - HBASE-3047 If new master crashes, restart is messy - HBASE-3054 Remore TestEmptyMetaInfo; it doesn't make sense any more. - HBASE-3056 Fix ordering in ZKWatcher constructor to prevent weird race - condition - HBASE-3057 Race condition when closing regions that causes flakiness in - TestRestartCluster - HBASE-3058 Fix REST tests on trunk - HBASE-3068 IllegalStateException when new server comes online, is given - 200 regions to open and 200th region gets timed out of regions - in transition - HBASE-3064 Long sleeping in HConnectionManager after thread is interrupted - (Bruno Dumon via Stack) - HBASE-2753 Remove sorted() methods from Result now that Gets are Scans - HBASE-3059 TestReadWriteConsistencyControl occasionally hangs (Hairong - via Ryan) - HBASE-2906 [rest/stargate] URI decoding in RowResource - HBASE-3008 Memstore.updateColumnValue passes wrong flag to heapSizeChange - (Causes memstore size to go negative) - HBASE-3089 REST tests are broken locally and up in hudson - HBASE-3062 ZooKeeper KeeperException$ConnectionLossException is a - "recoverable" exception; we should retry a while on server - startup at least. - HBASE-3074 Zookeeper test failing on hudson - HBASE-3089 REST tests are broken locally and up in hudson - HBASE-3085 TestSchemaResource broken on TRUNK up on HUDSON - HBASE-3080 TestAdmin hanging on hudson - HBASE-3063 TestThriftServer failing in TRUNK - HBASE-3094 Fixes for miscellaneous broken tests - HBASE-3060 [replication] Reenable replication on trunk with unit tests - HBASE-3041 [replication] ReplicationSink shouldn't kill the whole RS when - it fails to replicate - HBASE-3044 [replication] ReplicationSource won't cleanup logs if there's - nothing to replicate - HBASE-3113 Don't reassign regions if cluster is being shutdown - HBASE-2933 Skip EOF Errors during Log Recovery - (Nicolas Spiegelberg via Stack) - HBASE-3081 Log Splitting & Replay: Distinguish between Network IOE and - Parsing IOE (Nicolas Spiegelberg via Stack) - HBASE-3098 TestMetaReaderEditor is broken in TRUNK; hangs - HBASE-3110 TestReplicationSink failing in TRUNK up on Hudson - HBASE-3101 bin assembly doesn't include -tests or -source jars - HBASE-3121 [rest] Do not perform cache control when returning results - HBASE-2669 HCM.shutdownHook causes data loss with - hbase.client.write.buffer != 0 - HBASE-2985 HRegionServer.multi() no longer calls HRegion.put(List) when - possible - HBASE-3031 CopyTable MR job named "Copy Table" in Driver - HBASE-2658 REST (stargate) TableRegionModel Regions need to be updated to - work w/ new region naming convention from HBASE-2531 - HBASE-3140 Rest schema modification throw null pointer exception - (David Worms via Stack) - HBASE-2998 rolling-restart.sh shouldn't rely on zoo.cfg - HBASE-3145 importtsv fails when the line contains no data - (Kazuki Ohta via Todd Lipcon) - HBASE-2984 [shell] Altering a family shouldn't reset to default unchanged - attributes - HBASE-3143 Adding the tests' hbase-site.xml to the jar breaks some clients - HBASE-3139 Server shutdown processor stuck because meta not online - HBASE-3136 Stale reads from ZK can break the atomic CAS operations we - have in ZKAssign - HBASE-2753 Remove sorted() methods from Result now that Gets are Scans - HBASE-3147 Regions stuck in transition after rolling restart, perpetual - timeout handling but nothing happens - HBASE-3158 Bloom File Writes Broken if keySize is large - (Nicolas Spiegelberg via Stack) - HBASE-3155 HFile.appendMetaBlock() uses wrong comparator - (Nicolas Spiegelberg via Stack) - HBASE-3012 TOF doesn't take zk client port for remote clusters - HBASE-3159 Double play of OpenedRegionHandler for a single region - and assorted fixes around this + TestRollingRestart added - HBASE-3160 Use more intelligent priorities for PriorityCompactionQueue - (Nicolas Spiegelberg via Stack) - HBASE-3172 Reverse order of AssignmentManager and MetaNodeTracker in - ZooKeeperWatcher - HBASE-2406 Define semantics of cell timestamps/versions - HBASE-3175 Commit of HBASE-3160 broke TestPriorityCompactionQueue up on - hudson (nicolas via jgray) - HBASE-3163 If we timeout PENDING_CLOSE and send another closeRegion RPC, - need to handle NSRE from RS (comes as a RemoteException) - HBASE-3164 Handle case where we open META, ROOT has been closed but - znode location not deleted yet, and try to update META - location in ROOT - HBASE-2006 Documentation of hbase-site.xml parameters - HBASE-2672 README.txt should contain basic information like how to run - or build HBase - HBASE-3179 Enable ReplicationLogsCleaner only if replication is, - and fix its test - HBASE-3185 User-triggered compactions are triggering splits! - HBASE-1932 Encourage use of 'lzo' compression... add the wiki page to - getting started - HBASE-3151 NPE when trying to read regioninfo from .META. - HBASE-3191 FilterList with MUST_PASS_ONE and SCVF isn't working - (Stefan Seelmann via Stack) - HBASE-2471 Splitting logs, we'll make an output file though the - region no longer exists - HBASE-3095 Client needs to reconnect if it expires its zk session - HBASE-2935 Refactor "Corrupt Data" Tests in TestHLogSplit - (Alex Newman via Stack) - HBASE-3202 Closing a region, if we get a ConnectException, handle - it rather than abort - HBASE-3198 Log rolling archives files prematurely - HBASE-3203 We can get an order to open a region while shutting down - and it'll hold up regionserver shutdown - HBASE-3204 Reenable deferred log flush - HBASE-3195 [rest] Fix TestTransform breakage on Hudson - HBASE-3205 TableRecordReaderImpl.restart NPEs when first next is restarted - HBASE-3208 HLog.findMemstoresWithEditsOlderThan needs to look for edits - that are equal to too - HBASE-3141 Master RPC server needs to be started before an RS can check in - HBASE-3112 Enable and disable of table needs a bit of loving in new master - HBASE-3207 If we get IOException when closing a region, we should still - remove it from online regions and complete the close in ZK - HBASE-3199 large response handling: some fixups and cleanups - HBASE-3212 More testing of enable/disable uncovered base condition not in - place; i.e. that only one enable/disable runs at a time - HBASE-2898 MultiPut makes proper error handling impossible and leads to - corrupted data - HBASE-3213 If do abort of backup master will get NPE instead of graceful - abort - HBASE-3214 TestMasterFailover.testMasterFailoverWithMockedRITOnDeadRS is - failing (Gary via jgray) - HBASE-3216 Move HBaseFsck from client to util - HBASE-3219 Split parents are reassigned on restart and on disable/enable - HBASE-3222 Regionserver region listing in UI is no longer ordered - HBASE-3221 Race between splitting and disabling - HBASE-3224 NPE in KeyValue$KVComparator.compare when compacting - HBASE-3233 Fix Long Running Stats - HBASE-3232 Fix KeyOnlyFilter + Add Value Length (Nicolas via Ryan) - HBASE-3235 Intermittent incrementColumnValue failure in TestHRegion - (Gary via Ryan) - HBASE-3241 check to see if we exceeded hbase.regionserver.maxlogs limit is - incorrect (Kannan Muthukkaruppan via JD) - HBASE-3239 Handle null regions to flush in HLog.cleanOldLogs (Kannan - Muthukkaruppan via JD) - HBASE-3237 Split request accepted -- BUT CURRENTLY A NOOP - HBASE-3252 TestZooKeeperNodeTracker sometimes fails due to a race condition - in test notification (Gary Helmling via Andrew Purtell) - HBASE-3253 Thrift's missing from all the repositories in pom.xml - HBASE-3258 EOF when version file is empty - HBASE-3259 Can't kill the region servers when they wait on the master or - the cluster state znode - HBASE-3249 Typing 'help shutdown' in the shell shouldn't shutdown the cluster - HBASE-3262 TestHMasterRPCException uses non-ephemeral port for master - HBASE-3272 Remove no longer used options - HBASE-3269 HBase table truncate semantics seems broken as "disable" table - is now async by default - HBASE-3275 [rest] No gzip/deflate content encoding support - HBASE-3261 NPE out of HRS.run at startup when clock is out of sync - HBASE-3277 HBase Shell zk_dump command broken - HBASE-3267 close_region shell command breaks region - HBASE-3265 Regionservers waiting for ROOT while Master waiting for RegionServers - HBASE-3263 Stack overflow in AssignmentManager - HBASE-3234 hdfs-724 "breaks" TestHBaseTestingUtility multiClusters - HBASE-3286 Master passes IP and not hostname back to region server - HBASE-3297 If rows in .META. with no HRegionInfo cell, then hbck fails read - of .META. - HBASE-3294 WARN org.apache.hadoop.hbase.regionserver.Store: Not in set - (double-remove?) org.apache.hadoop.hbase.regionserver.StoreScanner@76607d3d - HBASE-3299 If failed open, we don't output the IOE - HBASE-3291 If split happens while regionserver is going down, we can stick open. - HBASE-3295 Dropping a 1k+ regions table likely ends in a client socket timeout - and it's very confusing - HBASE-3301 Treat java.net.SocketTimeoutException same as ConnectException - assigning/unassigning regions - HBASE-3296 Newly created table ends up disabled instead of assigned - HBASE-3304 Get spurious master fails during bootup - HBASE-3298 Regionserver can close during a split causing double assignment - HBASE-3309 " Not running balancer because dead regionserver processing" is a lie - HBASE-3314 [shell] 'move' is broken - HBASE-3315 Add debug output for when balancer makes bad balance - HBASE-3278 AssertionError in LoadBalancer - HBASE-3318 Split rollback leaves parent with writesEnabled=false - HBASE-3334 Refresh our hadoop jar because of HDFS-1520 - HBASE-3347 Can't truncate/disable table that has rows in .META. that have empty - info:regioninfo column - HBASE-3321 Replication.join shouldn't clear the logs znode - HBASE-3352 enabling a non-existent table from shell prints no error - HBASE-3353 table.jsp doesn't handle entries in META without server info - HBASE-3351 ReplicationZookeeper goes to ZK every time a znode is modified - HBASE-3326 Replication state's znode should be created else it - defaults to false - HBASE-3355 Stopping a stopped cluster leaks an HMaster - HBASE-3356 Add more checks in replication if RS is stopped - HBASE-3358 Recovered replication queue wait on themselves when terminating - HBASE-3359 LogRoller not added as a WAL listener when replication is enabled - HBASE-3360 ReplicationLogCleaner is enabled by default in 0.90 -- causes NPE - HBASE-3363 ReplicationSink should batch delete - HBASE-3365 EOFE contacting crashed RS causes Master abort - HBASE-3362 If .META. offline between OPENING and OPENED, then wrong server - location in .META. is possible - HBASE-3368 Split message can come in before region opened message; results - in 'Region has been PENDING_CLOSE for too long' cycle - HBASE-3366 WALObservers should be notified before the lock - HBASE-3367 Failed log split not retried - HBASE-3370 ReplicationSource.openReader fails to locate HLogs when they - aren't split yet - HBASE-3371 Race in TestReplication can make it fail - HBASE-3323 OOME in master splitting logs - HBASE-3374 Our jruby jar has *GPL jars in it; fix - HBASE-3343 Server not shutting down after losing log lease - HBASE-3381 Interrupt of a region open comes across as a successful open - HBASE-3386 NPE in TableRecordReaderImpl.restart - HBASE-3388 NPE processRegionInTransition(AssignmentManager.java:264) - doing rolling-restart.sh - HBASE-3383 [0.90RC1] bin/hbase script displays "no such file" warning on - target/cached_classpath.txt - HBASE-3344 Master aborts after RPC to server that was shutting down - HBASE-3408 AssignmentManager NullPointerException - HBASE-3402 Web UI shows two META regions - HBASE-3409 Failed server shutdown processing when retrying hlog split - HBASE-3412 HLogSplitter should handle missing HLogs - HBASE-3420 Handling a big rebalance, we can queue multiple instances of - a Close event; messes up state - HBASE-3423 hbase-env.sh over-rides HBASE_OPTS incorrectly (Ted Dunning via - Andrew Purtell) - HBASE-3407 hbck should pause between fixing and re-checking state - HBASE-3401 Region IPC operations should be high priority - HBASE-3430 hbase-daemon.sh should clean up PID files on process stop - - - IMPROVEMENTS - HBASE-1760 Cleanup TODOs in HTable - HBASE-1759 Ability to specify scanner caching on a per-scan basis - (Ken Weiner via jgray) - HBASE-1763 Put writeToWAL methods do not have proper getter/setter names - (second commit to fix compile error in hregion) - HBASE-1770 HTable.setWriteBufferSize does not flush the writeBuffer when - its size is set to a value lower than its current size. - (Mathias via jgray) - HBASE-1771 PE sequentialWrite is 7x slower because of - MemStoreFlusher#checkStoreFileCount - HBASE-1758 Extract interface out of HTable (Vaibhav Puranik via Andrew - Purtell) - HBASE-1776 Make rowcounter enum public - HBASE-1276 [testing] Upgrade to JUnit 4.x and use @BeforeClass - annotations to optimize tests - HBASE-1800 Too many ZK connections - HBASE-1819 Update to 0.20.1 hadoop and zk 3.2.1 - HBASE-1820 Update jruby from 1.2 to 1.3.1 - HBASE-1687 bin/hbase script doesn't allow for different memory settings - for each daemon type - HBASE-1823 Ability for Scanners to bypass the block cache - HBASE-1827 Add disabling block cache scanner flag to the shell - HBASE-1835 Add more delete tests - HBASE-1574 Client and server APIs to do batch deletes - HBASE-1833 hfile.main fixes - HBASE-1684 Backup (Export/Import) contrib tool for 0.20 - HBASE-1860 Change HTablePool#createHTable from private to protected - HBASE-48 Bulk load tools - HBASE-1855 HMaster web application doesn't show the region end key in the - table detail page (Andrei Dragomir via Stack) - HBASE-1870 Bytes.toFloat(byte[], int) is marked private - HBASE-1874 Client Scanner mechanism that is used for HbaseAdmin methods - (listTables, tableExists), is very slow if the client is far - away from the HBase cluster (Andrei Dragomir via Stack) - HBASE-1879 ReadOnly transactions generate WAL activity (Clint Morgan via - Stack) - HBASE-1875 Compression test utility - HBASE-1832 Faster enable/disable/delete - HBASE-1481 Add fast row key only scanning - HBASE-1506 [performance] Make splits faster - HBASE-1722 Add support for exporting HBase metrics via JMX - (Gary Helming via Stack) - HBASE-1899 Use scanner caching in shell count - HBASE-1887 Update hbase trunk to latests on hadoop 0.21 branch so we can - all test sync/append - HBASE-1902 Let PerformanceEvaluation support setting tableName and compress - algorithm (Schubert Zhang via Stack) - HBASE-1885 Simplify use of IndexedTable outside Java API - (Kevin Patterson via Stack) - HBASE-1903 Enable DEBUG by default - HBASE-1907 Version all client writables - HBASE-1914 hlog should be able to set replication level for the log - indendently from any other files - HBASE-1537 Intra-row scanning - HBASE-1918 Don't do DNS resolving in .META. scanner for each row - HBASE-1756 Refactor HLog (changing package first) - HBASE-1926 Remove unused xmlenc jar from trunk - HBASE-1936 HLog group commit - HBASE-1921 When the Master's session times out and there's only one, - cluster is wedged - HBASE-1942 Update hadoop jars in trunk; update to r831142 - HBASE-1943 Remove AgileJSON; unused - HBASE-1944 Add a "deferred log flush" attribute to HTD - HBASE-1945 Remove META and ROOT memcache size bandaid - HBASE-1947 If HBase starts/stops often in less than 24 hours, - you end up with lots of store files - HBASE-1829 Make use of start/stop row in TableInputFormat - (Lars George via Stack) - HBASE-1867 Tool to regenerate an hbase table from the data files - HBASE-1904 Add tutorial for installing HBase on Windows using Cygwin as - a test and development environment (Wim Van Leuven via Stack) - HBASE-1963 Output to multiple tables from Hadoop MR without use of HTable - (Kevin Peterson via Andrew Purtell) - HBASE-1975 SingleColumnValueFilter: Add ability to match the value of - previous versions of the specified column - (Jeremiah Jacquet via Stack) - HBASE-1971 Unit test the full WAL replay cycle - HBASE-1970 Export does one version only; make it configurable how many - it does - HBASE-1987 The Put object has no simple read methods for checking what - has already been added (Ryan Smith via Stack) - HBASE-1985 change HTable.delete(ArrayList) to HTable.delete(List) - HBASE-1958 Remove "# TODO: PUT BACK !!! "${HADOOP_HOME}"/bin/hadoop - dfsadmin -safemode wait" - HBASE-2011 Add zktop like output to HBase's master UI (Lars George via - Andrew Purtell) - HBASE-1995 Add configurable max value size check (Lars George via Andrew - Purtell) - HBASE-2017 Set configurable max value size check to 10MB - HBASE-2029 Reduce shell exception dump on console - (Lars George and J-D via Stack) - HBASE-2027 HConnectionManager.HBASE_INSTANCES leaks TableServers - (Dave Latham via Stack) - HBASE-2013 Add useful helpers to HBaseTestingUtility.java (Lars George - via J-D) - HBASE-2031 When starting HQuorumPeer, try to match on more than 1 address - HBASE-2043 Shell's scan broken - HBASE-2044 HBASE-1822 removed not-deprecated APIs - HBASE-2049 Cleanup HLog binary log output (Dave Latham via Stack) - HBASE-2052 Make hbase more 'live' when comes to noticing table creation, - splits, etc., for 0.20.3 - HBASE-2059 Break out WAL reader and writer impl from HLog - HBASE-2060 Missing closing tag in mapreduce package info (Lars George via - Andrew Purtell) - HBASE-2028 Add HTable.incrementColumnValue support to shell (Lars George - via Andrew Purtell) - HBASE-2062 Metrics documentation outdated (Lars George via JD) - HBASE-2045 Update trunk and branch zk to just-release 3.2.2. - HBASE-2074 Improvements to the hadoop-config script (Bassam Tabbara via - Stack) - HBASE-2076 Many javadoc warnings - HBASE-2068 MetricsRate is missing "registry" parameter (Lars George via JD) - HBASE-2025 0.20.2 accessed from older client throws - UndeclaredThrowableException; frustrates rolling upgrade - HBASE-2081 Set the retries higher in shell since client pause is lower - HBASE-1956 Export HDFS read and write latency as a metric - HBASE-2036 Use Configuration instead of HBaseConfiguration (Enis Soztutar - via Stack) - HBASE-2085 StringBuffer -> StringBuilder - conversion of references as - necessary (Kay Kay via Stack) - HBASE-2052 Upper bound of outstanding WALs can be overrun - HBASE-2086 Job(configuration,String) deprecated (Kay Kay via Stack) - HBASE-1996 Configure scanner buffer in bytes instead of number of rows - (Erik Rozendaal and Dave Latham via Stack) - HBASE-2090 findbugs issues (Kay Kay via Stack) - HBASE-2089 HBaseConfiguration() ctor. deprecated (Kay Kay via Stack) - HBASE-2035 Binary values are formatted wrong in shell - HBASE-2095 TIF shuold support more confs for the scanner (Bassam Tabbara - via Andrew Purtell) - HBASE-2107 Upgrading Lucene 2.2 to Lucene 3.0.0 (Kay Kay via Stack) - HBASE-2111 Move to ivy broke our being able to run in-place; i.e. - ./bin/start-hbase.sh in a checkout - HBASE-2136 Forward-port the old mapred package - HBASE-2133 Increase default number of client handlers - HBASE-2109 status 'simple' should show total requests per second, also - the requests/sec is wrong as is - HBASE-2151 Remove onelab and include generated thrift classes in javadoc - (Lars Francke via Stack) - HBASE-2149 hbase.regionserver.global.memstore.lowerLimit is too low - HBASE-2157 LATEST_TIMESTAMP not replaced by current timestamp in KeyValue - (bulk loading) - HBASE-2153 Publish generated HTML documentation for Thrift on the website - (Lars Francke via Stack) - HBASE-1373 Update Thrift to use compact/framed protocol (Lars Francke via - Stack) - HBASE-2172 Add constructor to Put for row key and timestamp - (Lars Francke via Stack) - HBASE-2178 Hooks for replication - HBASE-2180 Bad random read performance from synchronizing - hfile.fddatainputstream - HBASE-2194 HTable - put(Put) , put(ListHRS problem, regions are - not reassigned - HBASE-1568 Client doesnt consult old row filter interface in - filterSaysStop() - could result in NPE or excessive scanning - HBASE-1564 in UI make host addresses all look the same -- not IP sometimes - and host at others - HBASE-1567 cant serialize new filters - HBASE-1585 More binary key/value log output cleanup - (Lars George via Stack) - HBASE-1563 incrementColumnValue does not write to WAL (Jon Gray via Stack) - HBASE-1569 rare race condition can take down a regionserver - HBASE-1450 Scripts passed to hbase shell do not have shell context set up - for them - HBASE-1566 using Scan(startRow,stopRow) will cause you to iterate the - entire table - HBASE-1560 TIF can't seem to find one region - HBASE-1580 Store scanner does not consult filter.filterRow at end of scan - (Clint Morgan via Stack) - HBASE-1437 broken links in hbase.org - HBASE-1582 Translate ColumnValueFilter and RowFilterSet to the new Filter - interface - HBASE-1594 Fix scan addcolumns after hbase-1385 commit (broke hudson build) - HBASE-1595 hadoop-default.xml and zoo.cfg in hbase jar - HBASE-1602 HRegionServer won't go down since we added in new LruBlockCache - HBASE-1608 TestCachedBlockQueue failing on some jvms (Jon Gray via Stack) - HBASE-1615 HBASE-1597 introduced a bug when compacting after a split - (Jon Gray via Stack) - HBASE-1616 Unit test of compacting referenced StoreFiles (Jon Gray via - Stack) - HBASE-1618 Investigate further into the MemStoreFlusher StoreFile limit - (Jon Gray via Stack) - HBASE-1625 Adding check to Put.add(KeyValue), to see that it has the same - row as when instantiated (Erik Holstad via Stack) - HBASE-1629 HRS unable to contact master - HBASE-1633 Can't delete in TRUNK shell; makes it hard doing admin repairs - HBASE-1641 Stargate build.xml causes error in Eclipse - HBASE-1627 TableInputFormatBase#nextKeyValue catches the wrong exception - (Doğacan Güney via Stack) - HBASE-1644 Result.row is cached in getRow; this breaks MapReduce - (Doğacan Güney via Stack) - HBASE-1639 clean checkout with empty hbase-site.xml, zk won't start - HBASE-1646 Scan-s can't set a Filter (Doğacan Güney via Stack) - HBASE-1649 ValueFilter may not reset its internal state - (Doğacan Güney via Stack) - HBASE-1651 client is broken, it requests ROOT region location from ZK too - much - HBASE-1650 HBASE-1551 broke the ability to manage non-regionserver - start-up/shut down. ie: you cant start/stop thrift on a cluster - anymore - HBASE-1658 Remove UI refresh -- its annoying - HBASE-1659 merge tool doesnt take binary regions with \x escape format - HBASE-1663 Request compaction only once instead of every time 500ms each - time we cycle the hstore.getStorefilesCount() > - this.blockingStoreFilesNumber loop - HBASE-1058 Disable 1058 on catalog tables - HBASE-1583 Start/Stop of large cluster untenable - HBASE-1668 hbase-1609 broke TestHRegion.testScanSplitOnRegion unit test - HBASE-1669 need dynamic extensibility of HBaseRPC code maps and interface - lists (Clint Morgan via Stack) - HBASE-1359 After a large truncating table HBase becomes unresponsive - HBASE-1215 0.19.0 -> 0.20.0 migration (hfile, HCD changes, HSK changes) - HBASE-1689 Fix javadoc warnings and add overview on client classes to - client package - HBASE-1680 FilterList writable only works for HBaseObjectWritable - defined types (Clint Morgan via Stack and Jon Gray) - HBASE-1607 transactions / indexing fixes: trx deletes not handeled, index - scan can't specify stopRow (Clint Morgan via Stack) - HBASE-1693 NPE close_region ".META." in shell - HBASE-1706 META row with missing HRI breaks UI - HBASE-1709 Thrift getRowWithColumns doesn't accept column-family only - (Mathias Lehmann via Stack) - HBASE-1692 Web UI is extremely slow / freezes up if you have many tables - HBASE-1686 major compaction can create empty store files, causing AIOOB - when trying to read - HBASE-1705 Thrift server: deletes in mutateRow/s don't delete - (Tim Sell and Ryan Rawson via Stack) - HBASE-1703 ICVs across /during a flush can cause multiple keys with the - same TS (bad) - HBASE-1671 HBASE-1609 broke scanners riding across splits - HBASE-1717 Put on client-side uses passed-in byte[]s rather than always - using copies - HBASE-1647 Filter#filterRow is called too often, filters rows it shouldn't - have (Doğacan Güney via Ryan Rawson and Stack) - HBASE-1718 Reuse of KeyValue during log replay could cause the wrong - data to be used - HBASE-1573 Holes in master state change; updated startcode and server - go into .META. but catalog scanner just got old values (redux) - HBASE-1534 Got ZooKeeper event, state: Disconnected on HRS and then NPE - on reinit - HBASE-1725 Old TableMap interface's definitions are not generic enough - (Doğacan Güney via Stack) - HBASE-1732 Flag to disable regionserver restart - HBASE-1727 HTD and HCD versions need update - HBASE-1604 HBaseClient.getConnection() may return a broken connection - without throwing an exception (Eugene Kirpichov via Stack) - HBASE-1737 Regions unbalanced when adding new node - HBASE-1739 hbase-1683 broke splitting; only split three logs no matter - what N was - HBASE-1745 [tools] Tool to kick region out of inTransistion - HBASE-1757 REST server runs out of fds - HBASE-1768 REST server has upper limit of 5k PUT - HBASE-1766 Add advanced features to HFile.main() to be able to analyze - storefile problems - HBASE-1761 getclosest doesn't understand delete family; manifests as - "HRegionInfo was null or empty in .META" A.K.A the BS problem - HBASE-1738 Scanner doesnt reset when a snapshot is created, could miss - new updates into the 'kvset' (active part) - HBASE-1767 test zookeeper broken in trunk and 0.20 branch; broken on - hudson too - HBASE-1780 HTable.flushCommits clears write buffer in finally clause - HBASE-1784 Missing rows after medium intensity insert - HBASE-1809 NPE thrown in BoundedRangeFileInputStream - HBASE-1810 ConcurrentModificationException in region assignment - (Mathias Herberts via Stack) - HBASE-1804 Puts are permitted (and stored) when including an appended colon - HBASE-1715 Compaction failure in ScanWildcardColumnTracker.checkColumn - HBASE-2352 Small values for hbase.client.retries.number and - ipc.client.connect.max.retries breaks long ops in hbase shell - (Alexey Kovyrin via Stack) - HBASE-2531 32-bit encoding of regionnames waaaaaaayyyyy too susceptible to - hash clashes (Kannan Muthukkaruppan via Stack) - - IMPROVEMENTS - HBASE-1089 Add count of regions on filesystem to master UI; add percentage - online as difference between whats open and whats on filesystem - (Samuel Guo via Stack) - HBASE-1130 PrefixRowFilter (Michael Gottesman via Stack) - HBASE-1139 Update Clover in build.xml - HBASE-876 There are a large number of Java warnings in HBase; part 1, - part 2, part 3, part 4, part 5, part 6, part 7 and part 8 - (Evgeny Ryabitskiy via Stack) - HBASE-896 Update jruby from 1.1.2 to 1.1.6 - HBASE-1031 Add the Zookeeper jar - HBASE-1142 Cleanup thrift server; remove Text and profuse DEBUG messaging - (Tim Sell via Stack) - HBASE-1064 HBase REST xml/json improvements (Brian Beggs working of - initial Michael Gottesman work via Stack) - HBASE-5121 Fix shell usage for format.width - HBASE-845 HCM.isTableEnabled doesn't really tell if it is, or not - HBASE-903 [shell] Can't set table descriptor attributes when I alter a - table - HBASE-1166 saveVersion.sh doesn't work with git (Nitay Joffe via Stack) - HBASE-1167 JSP doesn't work in a git checkout (Nitay Joffe via Andrew - Purtell) - HBASE-1178 Add shutdown command to shell - HBASE-1184 HColumnDescriptor is too restrictive with family names - (Toby White via Andrew Purtell) - HBASE-1180 Add missing import statements to SampleUploader and remove - unnecessary @Overrides (Ryan Smith via Andrew Purtell) - HBASE-1191 ZooKeeper ensureParentExists calls fail - on absolute path (Nitay Joffe via Jean-Daniel Cryans) - HBASE-1187 After disabling/enabling a table, the regions seems to - be assigned to only 1-2 region servers - HBASE-1210 Allow truncation of output for scan and get commands in shell - (Lars George via Stack) - HBASE-1221 When using ant -projecthelp to build HBase not all the important - options show up (Erik Holstad via Stack) - HBASE-1189 Changing the map type used internally for HbaseMapWritable - (Erik Holstad via Stack) - HBASE-1188 Memory size of Java Objects - Make cacheable objects implement - HeapSize (Erik Holstad via Stack) - HBASE-1230 Document installation of HBase on Windows - HBASE-1241 HBase additions to ZooKeeper part 1 (Nitay Joffe via JD) - HBASE-1231 Today, going from a RowResult to a BatchUpdate reqiures some - data processing even though they are pretty much the same thing - (Erik Holstad via Stack) - HBASE-1240 Would be nice if RowResult could be comparable - (Erik Holstad via Stack) - HBASE-803 Atomic increment operations (Ryan Rawson and Jon Gray via Stack) - Part 1 and part 2 -- fix for a crash. - HBASE-1252 Make atomic increment perform a binary increment - (Jonathan Gray via Stack) - HBASE-1258,1259 ganglia metrics for 'requests' is confusing - (Ryan Rawson via Stack) - HBASE-1265 HLogEdit static constants should be final (Nitay Joffe via - Stack) - HBASE-1244 ZooKeeperWrapper constants cleanup (Nitay Joffe via Stack) - HBASE-1262 Eclipse warnings, including performance related things like - synthetic accessors (Nitay Joffe via Stack) - HBASE-1273 ZooKeeper WARN spits out lots of useless messages - (Nitay Joffe via Stack) - HBASE-1285 Forcing compactions should be available via thrift - (Tim Sell via Stack) - HBASE-1186 Memory-aware Maps with LRU eviction for cell cache - (Jonathan Gray via Andrew Purtell) - HBASE-1205 RegionServers should find new master when a new master comes up - (Nitay Joffe via Andrew Purtell) - HBASE-1309 HFile rejects key in Memcache with empty value - HBASE-1331 Lower the default scanner caching value - HBASE-1235 Add table enabled status to shell and UI - (Lars George via Stack) - HBASE-1333 RowCounter updates - HBASE-1195 If HBase directory exists but version file is inexistent, still - proceed with bootstrapping (Evgeny Ryabitskiy via Stack) - HBASE-1301 HTable.getRow() returns null if the row does no exist - (Rong-en Fan via Stack) - HBASE-1176 Javadocs in HBA should be clear about which functions are - asynchronous and which are synchronous - (Evgeny Ryabitskiy via Stack) - HBASE-1260 Bytes utility class changes: remove usage of ByteBuffer and - provide additional ByteBuffer primitives (Jon Gray via Stack) - HBASE-1183 New MR splitting algorithm and other new features need a way to - split a key range in N chunks (Jon Gray via Stack) - HBASE-1350 New method in HTable.java to return start and end keys for - regions in a table (Vimal Mathew via Stack) - HBASE-1271 Allow multiple tests to run on one machine - (Evgeny Ryabitskiy via Stack) - HBASE-1112 we will lose data if the table name happens to be the logs' dir - name (Samuel Guo via Stack) - HBASE-889 The current Thrift API does not allow a new scanner to be - created without supplying a column list unlike the other APIs. - (Tim Sell via Stack) - HBASE-1341 HTable pooler - HBASE-1379 re-enable LZO using hadoop-gpl-compression library - (Ryan Rawson via Stack) - HBASE-1383 hbase shell needs to warn on deleting multi-region table - HBASE-1286 Thrift should support next(nbRow) like functionality - (Alex Newman via Stack) - HBASE-1392 change how we build/configure lzocodec (Ryan Rawson via Stack) - HBASE-1397 Better distribution in the PerformanceEvaluation MapReduce - when rows run to the Billions - HBASE-1393 Narrow synchronization in HLog - HBASE-1404 minor edit of regionserver logging messages - HBASE-1405 Threads.shutdown has unnecessary branch - HBASE-1407 Changing internal structure of ImmutableBytesWritable - contructor (Erik Holstad via Stack) - HBASE-1345 Remove distributed mode from MiniZooKeeper (Nitay Joffe via - Stack) - HBASE-1414 Add server status logging chore to ServerManager - HBASE-1379 Make KeyValue implement Writable - (Erik Holstad and Jon Gray via Stack) - HBASE-1380 Make KeyValue implement HeapSize - (Erik Holstad and Jon Gray via Stack) - HBASE-1413 Fall back to filesystem block size default if HLog blocksize is - not specified - HBASE-1417 Cleanup disorientating RPC message - HBASE-1424 have shell print regioninfo and location on first load if - DEBUG enabled - HBASE-1008 [performance] The replay of logs on server crash takes way too - long - HBASE-1394 Uploads sometimes fall to 0 requests/second (Binding up on - HLog#append?) - HBASE-1429 Allow passing of a configuration object to HTablePool - HBASE-1432 LuceneDocumentWrapper is not public - HBASE-1401 close HLog (and open new one) if there hasnt been edits in N - minutes/hours - HBASE-1420 add abliity to add and remove (table) indexes on existing - tables (Clint Morgan via Stack) - HBASE-1430 Read the logs in batches during log splitting to avoid OOME - HBASE-1017 Region balancing does not bring newly added node within - acceptable range (Evgeny Ryabitskiy via Stack) - HBASE-1454 HBaseAdmin.getClusterStatus - HBASE-1236 Improve readability of table descriptions in the UI - (Lars George and Alex Newman via Stack) - HBASE-1455 Update DemoClient.py for thrift 1.0 (Tim Sell via Stack) - HBASE-1464 Add hbase.regionserver.logroll.period to hbase-default - HBASE-1192 LRU-style map for the block cache (Jon Gray and Ryan Rawson - via Stack) - HBASE-1466 Binary keys are not first class citizens - (Ryan Rawson via Stack) - HBASE-1445 Add the ability to start a master from any machine - HBASE-1474 Add zk attributes to list of attributes - in master and regionserver UIs - HBASE-1448 Add a node in ZK to tell all masters to shutdown - HBASE-1478 Remove hbase master options from shell (Nitay Joffe via Stack) - HBASE-1462 hclient still seems to depend on master - HBASE-1143 region count erratic in master UI - HBASE-1490 Update ZooKeeper library - HBASE-1489 Basic git ignores for people who use git and eclipse - HBASE-1453 Add HADOOP-4681 to our bundled hadoop, add to 'gettting started' - recommendation that hbase users backport - HBASE-1507 iCMS as default JVM - HBASE-1509 Add explanation to shell "help" command on how to use binarykeys - (Lars George via Stack) - HBASE-1514 hfile inspection tool - HBASE-1329 Visibility into ZooKeeper - HBASE-867 If millions of columns in a column family, hbase scanner won't - come up (Jonathan Gray via Stack) - HBASE-1538 Up zookeeper timeout from 10 seconds to 30 seconds to cut down - on hbase-user traffic - HBASE-1539 prevent aborts due to missing zoo.cfg - HBASE-1488 Fix TestThriftServer and re-enable it - HBASE-1541 Scanning multiple column families in the presence of deleted - families results in bad scans - HBASE-1540 Client delete unit test, define behavior - (Jonathan Gray via Stack) - HBASE-1552 provide version running on cluster via getClusterStatus - HBASE-1550 hbase-daemon.sh stop should provide more information when stop - command fails - HBASE-1515 Address part of config option hbase.regionserver unnecessary - HBASE-1532 UI Visibility into ZooKeeper - HBASE-1572 Zookeeper log4j property set to ERROR on default, same output - when cluster working and not working (Jon Gray via Stack) - HBASE-1576 TIF needs to be able to set scanner caching size for smaller - row tables & performance - HBASE-1577 Move memcache to ConcurrentSkipListMap from - ConcurrentSkipListSet - HBASE-1578 Change the name of the in-memory updates from 'memcache' to - 'memtable' or.... - HBASE-1562 How to handle the setting of 32 bit versus 64 bit machines - (Erik Holstad via Stack) - HBASE-1584 Put add methods should return this for ease of use (Be - consistant with Get) (Clint Morgan via Stack) - HBASE-1581 Run major compaction on .META. when table is dropped or - truncated - HBASE-1587 Update ganglia config and doc to account for ganglia 3.1 and - hadoop-4675 - HBASE-1589 Up zk maxClientCnxns from default of 10 to 20 or 30 or so - HBASE-1385 Revamp TableInputFormat, needs updating to match hadoop 0.20.x - AND remove bit where we can make < maps than regions - (Lars George via Stack) - HBASE-1596 Remove WatcherWrapper and have all users of Zookeeper provide a - Watcher - HBASE-1597 Prevent unnecessary caching of blocks during compactions - (Jon Gray via Stack) - HBASE-1607 Redo MemStore heap sizing to be accurate, testable, and more - like new LruBlockCache (Jon Gray via Stack) - HBASE-1218 Implement in-memory column (Jon Gray via Stack) - HBASE-1606 Remove zoo.cfg, put config options into hbase-site.xml - HBASE-1575 HMaster does not handle ZK session expiration - HBASE-1620 Need to use special StoreScanner constructor for major - compactions (passed sf, no caching, etc) (Jon Gray via Stack) - HBASE-1624 Don't sort Puts if only one in list in HCM#processBatchOfRows - HBASE-1626 Allow emitting Deletes out of new TableReducer - (Lars George via Stack) - HBASE-1551 HBase should manage multiple node ZooKeeper quorum - HBASE-1637 Delete client class methods should return itself like Put, Get, - Scan (Jon Gray via Nitay) - HBASE-1640 Allow passing arguments to jruby script run when run by hbase - shell - HBASE-698 HLog recovery is not performed after master failure - HBASE-1643 ScanDeleteTracker takes comparator but it unused - HBASE-1603 MR failed "RetriesExhaustedException: Trying to contact region - server Some server for region TestTable..." -- deubugging - HBASE-1470 hbase and HADOOP-4379, dhruba's flush/sync - HBASE-1632 Write documentation for configuring/managing ZooKeeper - HBASE-1662 Tool to run major compaction on catalog regions when hbase is - shutdown - HBASE-1665 expose more load information to the client side - HBASE-1609 We wait on leases to expire before regionserver goes down. - Rather, just let client fail - HBASE-1655 Usability improvements to HTablePool (Ken Weiner via jgray) - HBASE-1688 Improve javadocs in Result and KeyValue - HBASE-1694 Add TOC to 'Getting Started', add references to THBase and - ITHBase - HBASE-1699 Remove hbrep example as it's too out of date - (Tim Sell via Stack) - HBASE-1683 OOME on master splitting logs; stuck, won't go down - HBASE-1704 Better zk error when failed connect - HBASE-1714 Thrift server: prefix scan API - HBASE-1719 hold a reference to the region in stores instead of only the - region info - HBASE-1743 [debug tool] Add regionsInTransition list to ClusterStatus - detailed output - HBASE-1772 Up the default ZK session timeout from 30seconds to 60seconds - HBASE-2625 Make testDynamicBloom()'s "randomness" deterministic - (Nicolas Spiegelberg via Stack) - - OPTIMIZATIONS - HBASE-1412 Change values for delete column and column family in KeyValue - HBASE-1535 Add client ability to perform mutations without the WAL - (Jon Gray via Stack) - HBASE-1460 Concurrent LRU Block Cache (Jon Gray via Stack) - HBASE-1635 PerformanceEvaluation should use scanner prefetching - -Release 0.19.0 - 01/21/2009 - INCOMPATIBLE CHANGES - HBASE-885 TableMap and TableReduce should be interfaces - (Doğacan Güney via Stack) - HBASE-905 Remove V5 migration classes from 0.19.0 (Jean-Daniel Cryans via - Jim Kellerman) - HBASE-852 Cannot scan all families in a row with a LIMIT, STARTROW, etc. - (Izaak Rubin via Stack) - HBASE-953 Enable BLOCKCACHE by default [WAS -> Reevaluate HBASE-288 block - caching work....?] -- Update your hbase-default.xml file! - HBASE-636 java6 as a requirement - HBASE-994 IPC interfaces with different versions can cause problems - HBASE-1028 If key does not exist, return null in getRow rather than an - empty RowResult - HBASE-1134 OOME in HMaster when HBaseRPC is older than 0.19 - - BUG FIXES - HBASE-891 HRS.validateValuesLength throws IOE, gets caught in the retries - HBASE-892 Cell iteration is broken (Doğacan Güney via Jim Kellerman) - HBASE-898 RowResult.containsKey(String) doesn't work - (Doğacan Güney via Jim Kellerman) - HBASE-906 [shell] Truncates output - HBASE-912 PE is broken when other tables exist - HBASE-853 [shell] Cannot describe meta tables (Izaak Rubin via Stack) - HBASE-844 Can't pass script to hbase shell - HBASE-837 Add unit tests for ThriftServer.HBaseHandler (Izaak Rubin via - Stack) - HBASE-913 Classes using log4j directly - HBASE-914 MSG_REPORT_CLOSE has a byte array for a message - HBASE-918 Region balancing during startup makes cluster unstable - HBASE-921 region close and open processed out of order; makes for - disagreement between master and regionserver on region state - HBASE-925 HRS NPE on way out if no master to connect to - HBASE-928 NPE throwing RetriesExhaustedException - HBASE-924 Update hadoop in lib on 0.18 hbase branch to 0.18.1 - HBASE-929 Clarify that ttl in HColumnDescriptor is seconds - HBASE-930 RegionServer stuck: HLog: Could not append. Requesting close of - log java.io.IOException: Could not get block locations - HBASE-926 If no master, regionservers should hang out rather than fail on - connection and shut themselves down - HBASE-919 Master and Region Server need to provide root region location if - they are using HTable - With J-D's one line patch, test cases now appear to work and - PerformanceEvaluation works as before. - HBASE-939 NPE in HStoreKey - HBASE-945 Be consistent in use of qualified/unqualified mapfile paths - HBASE-946 Row with 55k deletes timesout scanner lease - HBASE-950 HTable.commit no longer works with existing RowLocks though it's - still in API - HBASE-952 Deadlock in HRegion.batchUpdate - HBASE-954 Don't reassign root region until ProcessServerShutdown has split - the former region server's log - HBASE-957 PerformanceEvaluation tests if table exists by comparing - descriptors - HBASE-728, HBASE-956, HBASE-955 Address thread naming, which threads are - Chores, vs Threads, make HLog manager the write ahead log and - not extend it to provided optional HLog sync operations. - HBASE-970 Update the copy/rename scripts to go against change API - HBASE-966 HBASE-748 misses some writes - HBASE-971 Fix the failing tests on Hudson - HBASE-973 [doc] In getting started, make it clear that hbase needs to - create its directory in hdfs - HBASE-963 Fix the retries in HTable.flushCommit - HBASE-969 Won't when storefile > 2G. - HBASE-976 HADOOP 0.19.0 RC0 is broke; replace with HEAD of branch-0.19 - HBASE-977 Arcane HStoreKey comparator bug - HBASE-979 REST web app is not started automatically - HBASE-980 Undo core of HBASE-975, caching of start and end row - HBASE-982 Deleting a column in MapReduce fails (Doğacan Güney via - Stack) - HBASE-984 Fix javadoc warnings - HBASE-985 Fix javadoc warnings - HBASE-951 Either shut down master or let it finish cleanup - HBASE-964 Startup stuck "waiting for root region" - HBASE-964, HBASE-678 provide for safe-mode without locking up HBase "waiting - for root region" - HBASE-990 NoSuchElementException in flushSomeRegions; took two attempts. - HBASE-602 HBase Crash when network card has a IPv6 address - HBASE-996 Migration script to up the versions in catalog tables - HBASE-991 Update the mapred package document examples so they work with - TRUNK/0.19.0. - HBASE-1003 If cell exceeds TTL but not VERSIONs, will not be removed during - major compaction - HBASE-1005 Regex and string comparison operators for ColumnValueFilter - HBASE-910 Scanner misses columns / rows when the scanner is obtained - during a memcache flush - HBASE-1009 Master stuck in loop wanting to assign but regions are closing - HBASE-1016 Fix example in javadoc overvie - HBASE-1021 hbase metrics FileContext not working - HBASE-1023 Check global flusher - HBASE-1036 HBASE-1028 broke Thrift - HBASE-1037 Some test cases failing on Windows/Cygwin but not UNIX/Linux - HBASE-1041 Migration throwing NPE - HBASE-1042 OOME but we don't abort; two part commit. - HBASE-927 We don't recover if HRS hosting -ROOT-/.META. goes down - HBASE-1029 REST wiki documentation incorrect - (Sishen Freecity via Stack) - HBASE-1043 Removing @Override attributes where they are no longer needed. - (Ryan Smith via Jim Kellerman) - HBASE-927 We don't recover if HRS hosting -ROOT-/.META. goes down - - (fix bug in createTable which caused tests to fail) - HBASE-1039 Compaction fails if bloomfilters are enabled - HBASE-1027 Make global flusher check work with percentages rather than - hard code memory sizes - HBASE-1000 Sleeper.sleep does not go back to sleep when interrupted - and no stop flag given. - HBASE-900 Regionserver memory leak causing OOME during relatively - modest bulk importing; part 1 and part 2 - HBASE-1054 Index NPE on scanning (Clint Morgan via Andrew Purtell) - HBASE-1052 Stopping a HRegionServer with unflushed cache causes data loss - from org.apache.hadoop.hbase.DroppedSnapshotException - HBASE-1059 ConcurrentModificationException in notifyChangedReadersObservers - HBASE-1063 "File separator problem on Windows" (Max Lehn via Stack) - HBASE-1068 TestCompaction broken on hudson - HBASE-1067 TestRegionRebalancing broken by running of hdfs shutdown thread - HBASE-1070 Up default index interval in TRUNK and branch - HBASE-1045 Hangup by regionserver causes write to fail - HBASE-1079 Dumb NPE in ServerCallable hides the RetriesExhausted exception - HBASE-782 The DELETE key in the hbase shell deletes the wrong character - (Tim Sell via Stack) - HBASE-543, HBASE-1046, HBase-1051 A region's state is kept in several places - in the master opening the possibility for race conditions - HBASE-1087 DFS failures did not shutdown regionserver - HBASE-1072 Change Thread.join on exit to a timed Thread.join - HBASE-1098 IllegalStateException: Cannot set a region to be closed it it - was not already marked as closing - HBASE-1100 HBASE-1062 broke TestForceSplit - HBASE-1191 shell tools -> close_region does not work for regions that did - not deploy properly on startup - HBASE-1093 NPE in HStore#compact - HBASE-1097 SequenceFile.Reader keeps around buffer whose size is that of - largest item read -> results in lots of dead heap - HBASE-1107 NPE in HStoreScanner.updateReaders - HBASE-1083 Will keep scheduling major compactions if last time one ran, we - didn't. - HBASE-1101 NPE in HConnectionManager$TableServers.processBatchOfRows - HBASE-1099 Regions assigned while master is splitting logs of recently - crashed server; regionserver tries to execute incomplete log - HBASE-1104, HBASE-1098, HBASE-1096: Doubly-assigned regions redux, - IllegalStateException: Cannot set a region to be closed it it was - not already marked as closing, Does not recover if HRS carrying - -ROOT- goes down - HBASE-1114 Weird NPEs compacting - HBASE-1116 generated web.xml and svn don't play nice together - HBASE-1119 ArrayOutOfBoundsException in HStore.compact - HBASE-1121 Cluster confused about where -ROOT- is - HBASE-1125 IllegalStateException: Cannot set a region to be closed if it was - not already marked as pending close - HBASE-1124 Balancer kicks in way too early - HBASE-1127 OOME running randomRead PE - HBASE-1132 Can't append to HLog, can't roll log, infinite cycle (another - spin on HBASE-930) - - IMPROVEMENTS - HBASE-901 Add a limit to key length, check key and value length on client side - HBASE-890 Alter table operation and also related changes in REST interface - (Sishen Freecity via Stack) - HBASE-894 [shell] Should be able to copy-paste table description to create - new table (Sishen Freecity via Stack) - HBASE-886, HBASE-895 Sort the tables in the web UI, [shell] 'list' command - should emit a sorted list of tables (Krzysztof Szlapinski via Stack) - HBASE-884 Double and float converters for Bytes class - (Doğacan Güney via Stack) - HBASE-908 Add approximate counting to CountingBloomFilter - (Andrzej Bialecki via Stack) - HBASE-920 Make region balancing sloppier - HBASE-902 Add force compaction and force split operations to UI and Admin - HBASE-942 Add convenience methods to RowFilterSet - (Clint Morgan via Stack) - HBASE-943 to ColumnValueFilter: add filterIfColumnMissing property, add - SubString operator (Clint Morgan via Stack) - HBASE-937 Thrift getRow does not support specifying columns - (Doğacan Güney via Stack) - HBASE-959 Be able to get multiple RowResult at one time from client side - (Sishen Freecity via Stack) - HBASE-936 REST Interface: enable get number of rows from scanner interface - (Sishen Freecity via Stack) - HBASE-960 REST interface: more generic column family configure and also - get Rows using offset and limit (Sishen Freecity via Stack) - HBASE-817 Hbase/Shell Truncate - HBASE-949 Add an HBase Manual - HBASE-839 Update hadoop libs in hbase; move hbase TRUNK on to an hadoop - 0.19.0 RC - HBASE-785 Remove InfoServer, use HADOOP-3824 StatusHttpServer - instead (requires hadoop 0.19) - HBASE-81 When a scanner lease times out, throw a more "user friendly" exception - HBASE-978 Remove BloomFilterDescriptor. It is no longer used. - HBASE-975 Improve MapFile performance for start and end key - HBASE-961 Delete multiple columns by regular expression - (Samuel Guo via Stack) - HBASE-722 Shutdown and Compactions - HBASE-983 Declare Perl namespace in Hbase.thrift - HBASE-987 We need a Hbase Partitioner for TableMapReduceUtil.initTableReduceJob - MR Jobs (Billy Pearson via Stack) - HBASE-993 Turn off logging of every catalog table row entry on every scan - HBASE-992 Up the versions kept by catalog tables; currently 1. Make it 10? - HBASE-998 Narrow getClosestRowBefore by passing column family - HBASE-999 Up versions on historian and keep history of deleted regions for a - while rather than delete immediately - HBASE-938 Major compaction period is not checked periodically - HBASE-947 [Optimization] Major compaction should remove deletes as well as - the deleted cell - HBASE-675 Report correct server hosting a table split for assignment to - for MR Jobs - HBASE-927 We don't recover if HRS hosting -ROOT-/.META. goes down - HBASE-1013 Add debugging around commit log cleanup - HBASE-972 Update hbase trunk to use released hadoop 0.19.0 - HBASE-1022 Add storefile index size to hbase metrics - HBASE-1026 Tests in mapred are failing - HBASE-1020 Regionserver OOME handler should dump vital stats - HBASE-1018 Regionservers should report detailed health to master - HBASE-1034 Remove useless TestToString unit test - HBASE-1030 Bit of polish on HBASE-1018 - HBASE-847 new API: HTable.getRow with numVersion specified - (Doğacan Güney via Stack) - HBASE-1048 HLog: Found 0 logs to remove out of total 1450; oldest - outstanding seqnum is 162297053 fr om region -ROOT-,,0 - HBASE-1055 Better vm stats on startup - HBASE-1065 Minor logging improvements in the master - HBASE-1053 bring recent rpc changes down from hadoop - HBASE-1056 [migration] enable blockcaching on .META. table - HBASE-1069 Show whether HRegion major compacts or not in INFO level - HBASE-1066 Master should support close/open/reassignment/enable/disable - operations on individual regions - HBASE-1062 Compactions at (re)start on a large table can overwhelm DFS - HBASE-1102 boolean HTable.exists() - HBASE-1105 Remove duplicated code in HCM, add javadoc to RegionState, etc. - HBASE-1106 Expose getClosestRowBefore in HTable - (Michael Gottesman via Stack) - HBASE-1082 Administrative functions for table/region maintenance - HBASE-1090 Atomic Check And Save in HTable (Michael Gottesman via Stack) - HBASE-1137 Add not on xceivers count to overview documentation - - NEW FEATURES - HBASE-875 Use MurmurHash instead of JenkinsHash [in bloomfilters] - (Andrzej Bialecki via Stack) - HBASE-625 Metrics support for cluster load history: emissions and graphs - HBASE-883 Secondary indexes (Clint Morgan via Andrew Purtell) - HBASE-728 Support for HLog appends - - OPTIMIZATIONS - HBASE-748 Add an efficient way to batch update many rows - HBASE-887 Fix a hotspot in scanners - HBASE-967 [Optimization] Cache cell maximum length (HCD.getMaxValueLength); - its used checking batch size - HBASE-940 Make the TableOutputFormat batching-aware - HBASE-576 Investigate IPC performance - -Release 0.18.0 - September 21st, 2008 - - INCOMPATIBLE CHANGES - HBASE-697 Thrift idl needs update/edit to match new 0.2 API (and to fix bugs) - (Tim Sell via Stack) - HBASE-822 Update thrift README and HBase.thrift to use thrift 20080411 - Updated all other languages examples (only python went in) - - BUG FIXES - HBASE-881 Fixed bug when Master tries to reassign split or offline regions - from a dead server - HBASE-860 Fixed Bug in IndexTableReduce where it concerns writing lucene - index fields. - HBASE-805 Remove unnecessary getRow overloads in HRS (Jonathan Gray via - Jim Kellerman) (Fix whitespace diffs in HRegionServer) - HBASE-811 HTD is not fully copyable (Andrew Purtell via Jim Kellerman) - HBASE-729 Client region/metadata cache should have a public method for - invalidating entries (Andrew Purtell via Stack) - HBASE-819 Remove DOS-style ^M carriage returns from all code where found - (Jonathan Gray via Jim Kellerman) - HBASE-818 Deadlock running 'flushSomeRegions' (Andrew Purtell via Stack) - HBASE-820 Need mainline to flush when 'Blocking updates' goes up. - (Jean-Daniel Cryans via Stack) - HBASE-821 UnknownScanner happens too often (Jean-Daniel Cryans via Stack) - HBASE-813 Add a row counter in the new shell (Jean-Daniel Cryans via Stack) - HBASE-824 Bug in Hlog we print array of byes for region name - (Billy Pearson via Stack) - HBASE-825 Master logs showing byte [] in place of string in logging - (Billy Pearson via Stack) - HBASE-808,809 MAX_VERSIONS not respected, and Deletall doesn't and inserts - after delete don't work as expected - (Jean-Daniel Cryans via Stack) - HBASE-831 committing BatchUpdate with no row should complain - (Andrew Purtell via Jim Kellerman) - HBASE-833 Doing an insert with an unknown family throws a NPE in HRS - HBASE-810 Prevent temporary deadlocks when, during a scan with write - operations, the region splits (Jean-Daniel Cryans via Jim - Kellerman) - HBASE-843 Deleting and recreating a table in a single process does not work - (Jonathan Gray via Jim Kellerman) - HBASE-849 Speed improvement in JenkinsHash (Andrzej Bialecki via Stack) - HBASE-552 Bloom filter bugs (Andrzej Bialecki via Jim Kellerman) - HBASE-762 deleteFamily takes timestamp, should only take row and family. - Javadoc describes both cases but only implements the timestamp - case. (Jean-Daniel Cryans via Jim Kellerman) - HBASE-768 This message 'java.io.IOException: Install 0.1.x of hbase and run - its migration first' is useless (Jean-Daniel Cryans via Jim - Kellerman) - HBASE-826 Delete table followed by recreation results in honked table - HBASE-834 'Major' compactions and upper bound on files we compact at any - one time (Billy Pearson via Stack) - HBASE-836 Update thrift examples to work with changed IDL (HBASE-697) - (Toby White via Stack) - HBASE-854 hbase-841 broke build on hudson? - makes sure that proxies are - closed. (Andrew Purtell via Jim Kellerman) - HBASE-855 compaction can return less versions then we should in some cases - (Billy Pearson via Stack) - HBASE-832 Problem with row keys beginnig with characters < than ',' and - the region location cache - HBASE-864 Deadlock in regionserver - HBASE-865 Fix javadoc warnings (Rong-En Fan via Jim Kellerman) - HBASE-872 Getting exceptions in shell when creating/disabling tables - HBASE-868 Incrementing binary rows cause strange behavior once table - splits (Jonathan Gray via Stack) - HBASE-877 HCM is unable to find table with multiple regions which contains - binary (Jonathan Gray via Stack) - - IMPROVEMENTS - HBASE-801 When a table haven't disable, shell could response in a "user - friendly" way. - HBASE-816 TableMap should survive USE (Andrew Purtell via Stack) - HBASE-812 Compaction needs little better skip algo (Daniel Leffel via Stack) - HBASE-806 Change HbaseMapWritable and RowResult to implement SortedMap - instead of Map (Jonathan Gray via Stack) - HBASE-795 More Table operation in TableHandler for REST interface: part 1 - (Sishen Freecity via Stack) - HBASE-795 More Table operation in TableHandler for REST interface: part 2 - (Sishen Freecity via Stack) - HBASE-830 Debugging HCM.locateRegionInMeta is painful - HBASE-784 Base hbase-0.3.0 on hadoop-0.18 - HBASE-841 Consolidate multiple overloaded methods in HRegionInterface, - HRegionServer (Jean-Daniel Cryans via Jim Kellerman) - HBASE-840 More options on the row query in REST interface - (Sishen Freecity via Stack) - HBASE-874 deleting a table kills client rpc; no subsequent communication if - shell or thrift server, etc. (Jonathan Gray via Jim Kellerman) - HBASE-871 Major compaction periodicity should be specifyable at the column - family level, not cluster wide (Jonathan Gray via Stack) - HBASE-465 Fix javadoc for all public declarations - HBASE-882 The BatchUpdate class provides, put(col, cell) and delete(col) - but no get() (Ryan Smith via Stack and Jim Kellerman) - - NEW FEATURES - HBASE-787 Postgresql to HBase table replication example (Tim Sell via Stack) - HBASE-798 Provide Client API to explicitly lock and unlock rows (Jonathan - Gray via Jim Kellerman) - HBASE-798 Add missing classes: UnknownRowLockException and RowLock which - were present in previous versions of the patches for this issue, - but not in the version that was committed. Also fix a number of - compilation problems that were introduced by patch. - HBASE-669 MultiRegion transactions with Optimistic Concurrency Control - (Clint Morgan via Stack) - HBASE-842 Remove methods that have Text as a parameter and were deprecated - in 0.2.1 (Jean-Daniel Cryans via Jim Kellerman) - - OPTIMIZATIONS - -Release 0.2.0 - August 8, 2008. - - INCOMPATIBLE CHANGES - HBASE-584 Names in the filter interface are confusing (Clint Morgan via - Jim Kellerman) (API change for filters) - HBASE-601 Just remove deprecated methods in HTable; 0.2 is not backward - compatible anyways - HBASE-82 Row keys should be array of bytes - HBASE-76 Purge servers of Text (Done as part of HBASE-82 commit). - HBASE-487 Replace hql w/ a hbase-friendly jirb or jython shell - Part 1: purge of hql and added raw jirb in its place. - HBASE-521 Improve client scanner interface - HBASE-288 Add in-memory caching of data. Required update of hadoop to - 0.17.0-dev.2008-02-07_12-01-58. (Tom White via Stack) - HBASE-696 Make bloomfilter true/false and self-sizing - HBASE-720 clean up inconsistencies around deletes (Izaak Rubin via Stack) - HBASE-796 Deprecates Text methods from HTable - (Michael Gottesman via Stack) - - BUG FIXES - HBASE-574 HBase does not load hadoop native libs (Rong-En Fan via Stack) - HBASE-598 Loggging, no .log file; all goes into .out - HBASE-622 Remove StaticTestEnvironment and put a log4j.properties in src/test - HBASE-624 Master will shut down if number of active region servers is zero - even if shutdown was not requested - HBASE-629 Split reports incorrect elapsed time - HBASE-623 Migration script for hbase-82 - HBASE-630 Default hbase.rootdir is garbage - HBASE-589 Remove references to deprecated methods in Hadoop once - hadoop-0.17.0 is released - HBASE-638 Purge \r from src - HBASE-644 DroppedSnapshotException but RegionServer doesn't restart - HBASE-641 Improve master split logging - HBASE-642 Splitting log in a hostile environment -- bad hdfs -- we drop - write-ahead-log edits - HBASE-646 EOFException opening HStoreFile info file (spin on HBASE-645and 550) - HBASE-648 If mapfile index is empty, run repair - HBASE-640 TestMigrate failing on hudson - HBASE-651 Table.commit should throw NoSuchColumnFamilyException if column - family doesn't exist - HBASE-649 API polluted with default and protected access data members and methods - HBASE-650 Add String versions of get, scanner, put in HTable - HBASE-656 Do not retry exceptions such as unknown scanner or illegal argument - HBASE-659 HLog#cacheFlushLock not cleared; hangs a region - HBASE-663 Incorrect sequence number for cache flush - HBASE-655 Need programmatic way to add column family: need programmatic way - to enable/disable table - HBASE-654 API HTable.getMetadata().addFamily shouldn't be exposed to user - HBASE-666 UnmodifyableHRegionInfo gives the wrong encoded name - HBASE-668 HBASE-533 broke build - HBASE-670 Historian deadlocks if regionserver is at global memory boundary - and is hosting .META. - HBASE-665 Server side scanner doesn't honor stop row - HBASE-662 UI in table.jsp gives META locations, not the table's regions - location (Jean-Daniel Cryans via Stack) - HBASE-676 Bytes.getInt returns a long (Clint Morgan via Stack) - HBASE-680 Config parameter hbase.io.index.interval should be - hbase.index.interval, according to HBaseMapFile.HbaseWriter - (LN via Stack) - HBASE-682 Unnecessary iteration in HMemcache.internalGet? got much better - reading performance after break it (LN via Stack) - HBASE-686 MemcacheScanner didn't return the first row(if it exists), - because HScannerInterface's output incorrect (LN via Jim Kellerman) - HBASE-691 get* and getScanner are different in how they treat column parameter - HBASE-694 HStore.rowAtOrBeforeFromMapFile() fails to locate the row if # of mapfiles >= 2 - (Rong-En Fan via Bryan) - HBASE-652 dropping table fails silently if table isn't disabled - HBASE-683 can not get svn revision # at build time if locale is not english - (Rong-En Fan via Stack) - HBASE-699 Fix TestMigrate up on Hudson - HBASE-615 Region balancer oscillates during cluster startup - HBASE-613 Timestamp-anchored scanning fails to find all records - HBASE-681 NPE in Memcache - HBASE-701 Showing bytes in log when should be String - HBASE-702 deleteall doesn't - HBASE-704 update new shell docs and commands on help menu - HBASE-709 Deadlock while rolling WAL-log while finishing flush - HBASE-710 If clocks are way off, then we can have daughter split come - before rather than after its parent in .META. - HBASE-714 Showing bytes in log when should be string (2) - HBASE-627 Disable table doesn't work reliably - HBASE-716 TestGet2.testGetClosestBefore fails with hadoop-0.17.1 - HBASE-715 Base HBase 0.2 on Hadoop 0.17.1 - HBASE-718 hbase shell help info - HBASE-717 alter table broke with new shell returns InvalidColumnNameException - HBASE-573 HBase does not read hadoop-*.xml for dfs configuration after - moving out hadoop/contrib - HBASE-11 Unexpected exits corrupt DFS - HBASE-12 When hbase regionserver restarts, it says "impossible state for - createLease()" - HBASE-575 master dies with stack overflow error if rootdir isn't qualified - HBASE-582 HBase 554 forgot to clear results on each iteration caused by a filter - (Clint Morgan via Stack) - HBASE-532 Odd interaction between HRegion.get, HRegion.deleteAll and compactions - HBASE-10 HRegionServer hangs upon exit due to DFSClient Exception - HBASE-595 RowFilterInterface.rowProcessed() is called *before* fhe final - filtering decision is made (Clint Morgan via Stack) - HBASE-586 HRegion runs HStore memcache snapshotting -- fix it so only HStore - knows about workings of memcache - HBASE-588 Still a 'hole' in scanners, even after HBASE-532 - HBASE-604 Don't allow CLASSPATH from environment pollute the hbase CLASSPATH - HBASE-608 HRegionServer::getThisIP() checks hadoop config var for dns interface name - (Jim R. Wilson via Stack) - HBASE-609 Master doesn't see regionserver edits because of clock skew - HBASE-607 MultiRegionTable.makeMultiRegionTable is not deterministic enough - for regression tests - HBASE-405 TIF and TOF use log4j directly rather than apache commons-logging - HBASE-618 We always compact if 2 files, regardless of the compaction threshold setting - HBASE-619 Fix 'logs' link in UI - HBASE-478 offlining of table does not run reliably - HBASE-453 undeclared throwable exception from HTable.get - HBASE-620 testmergetool failing in branch and trunk since hbase-618 went in - HBASE-550 EOF trying to read reconstruction log stops region deployment - HBASE-551 Master stuck splitting server logs in shutdown loop; on each - iteration, edits are aggregated up into the millions - HBASE-505 Region assignments should never time out so long as the region - server reports that it is processing the open request - HBASE-561 HBase package does not include LICENSE.txt nor build.xml - HBASE-563 TestRowFilterAfterWrite erroneously sets master address to - 0.0.0.0:60100 rather than relying on conf - HBASE-507 Use Callable pattern to sleep between retries - HBASE-564 Don't do a cache flush if there are zero entries in the cache. - HBASE-554 filters generate StackOverflowException - HBASE-567 Reused BatchUpdate instances accumulate BatchOperations - HBASE-577 NPE getting scanner - HBASE-19 CountingBloomFilter can overflow its storage - (Stu Hood and Bryan Duxbury via Stack) - HBASE-28 thrift put/mutateRow methods need to throw IllegalArgument - exceptions (Dave Simpson via Bryan Duxbury via Stack) - HBASE-2 hlog numbers should wrap around when they reach 999 - (Bryan Duxbury via Stack) - HBASE-421 TestRegionServerExit broken - HBASE-426 hbase can't find remote filesystem - HBASE-437 Clear Command should use system.out (Edward Yoon via Stack) - HBASE-434, HBASE-435 TestTableIndex and TestTableMapReduce failed in Hudson builds - HBASE-446 Fully qualified hbase.rootdir doesn't work - HBASE-438 XMLOutputter state should be initialized. (Edward Yoon via Stack) - HBASE-8 Delete table does not remove the table directory in the FS - HBASE-428 Under continuous upload of rows, WrongRegionExceptions are thrown - that reach the client even after retries - HBASE-460 TestMigrate broken when HBase moved to subproject - HBASE-462 Update migration tool - HBASE-473 When a table is deleted, master sends multiple close messages to - the region server - HBASE-490 Doubly-assigned .META.; master uses one and clients another - HBASE-492 hbase TRUNK does not build against hadoop TRUNK - HBASE-496 impossible state for createLease writes 400k lines in about 15mins - HBASE-472 Passing on edits, we dump all to log - HBASE-495 No server address listed in .META. - HBASE-433 HBASE-251 Region server should delete restore log after successful - restore, Stuck replaying the edits of crashed machine. - HBASE-27 hregioninfo cell empty in meta table - HBASE-501 Empty region server address in info:server entry and a - startcode of -1 in .META. - HBASE-516 HStoreFile.finalKey does not update the final key if it is not - the top region of a split region - HBASE-525 HTable.getRow(Text) does not work (Clint Morgan via Bryan Duxbury) - HBASE-524 Problems with getFull - HBASE-528 table 'does not exist' when it does - HBASE-531 Merge tool won't merge two overlapping regions (port HBASE-483 to - trunk) - HBASE-537 Wait for hdfs to exit safe mode - HBASE-476 RegexpRowFilter behaves incorectly when there are multiple store - files (Clint Morgan via Jim Kellerman) - HBASE-527 RegexpRowFilter does not work when there are columns from - multiple families (Clint Morgan via Jim Kellerman) - HBASE-534 Double-assignment at SPLIT-time - HBASE-712 midKey found compacting is the first, not necessarily the optimal - HBASE-719 Find out why users have network problems in HBase and not in Hadoop - and HConnectionManager (Jean-Daniel Cryans via Stack) - HBASE-703 Invalid regions listed by regionserver.jsp (Izaak Rubin via Stack) - HBASE-674 Memcache size unreliable - HBASE-726 Unit tests won't run because of a typo (Sebastien Rainville via Stack) - HBASE-727 Client caught in an infinite loop when trying to connect to cached - server locations (Izaak Rubin via Stack) - HBASE-732 shell formatting error with the describe command - (Izaak Rubin via Stack) - HBASE-731 delete, deletefc in HBase shell do not work correctly - (Izaak Rubin via Stack) - HBASE-734 scan '.META.', {LIMIT => 10} crashes (Izaak Rubin via Stack) - HBASE-736 Should have HTable.deleteAll(String row) and HTable.deleteAll(Text row) - (Jean-Daniel Cryans via Stack) - HBASE-740 ThriftServer getting table names incorrectly (Tim Sell via Stack) - HBASE-742 Rename getMetainfo in HTable as getTableDescriptor - HBASE-739 HBaseAdmin.createTable() using old HTableDescription doesn't work - (Izaak Rubin via Stack) - HBASE-744 BloomFilter serialization/deserialization broken - HBASE-742 Column length limit is not enforced (Jean-Daniel Cryans via Stack) - HBASE-737 Scanner: every cell in a row has the same timestamp - HBASE-700 hbase.io.index.interval need be configuratable in column family - (Andrew Purtell via Stack) - HBASE-62 Allow user add arbitrary key/value pairs to table and column - descriptors (Andrew Purtell via Stack) - HBASE-34 Set memcache flush size per column (Andrew Purtell via Stack) - HBASE-42 Set region split size on table creation (Andrew Purtell via Stack) - HBASE-43 Add a read-only attribute to columns (Andrew Purtell via Stack) - HBASE-424 Should be able to enable/disable .META. table - HBASE-679 Regionserver addresses are still not right in the new tables page - HBASE-758 Throwing IOE read-only when should be throwing NSRE - HBASE-743 bin/hbase migrate upgrade fails when redo logs exists - HBASE-754 The JRuby shell documentation is wrong in "get" and "put" - (Jean-Daniel Cryans via Stack) - HBASE-756 In HBase shell, the put command doesn't process the timestamp - (Jean-Daniel Cryans via Stack) - HBASE-757 REST mangles table names (Sishen via Stack) - HBASE-706 On OOME, regionserver sticks around and doesn't go down with cluster - (Jean-Daniel Cryans via Stack) - HBASE-759 TestMetaUtils failing on hudson - HBASE-761 IOE: Stream closed exception all over logs - HBASE-763 ClassCastException from RowResult.get(String) - (Andrew Purtell via Stack) - HBASE-764 The name of column request has padding zero using REST interface - (Sishen Freecity via Stack) - HBASE-750 NPE caused by StoreFileScanner.updateReaders - HBASE-769 TestMasterAdmin fails throwing RegionOfflineException when we're - expecting IllegalStateException - HBASE-766 FileNotFoundException trying to load HStoreFile 'data' - HBASE-770 Update HBaseRPC to match hadoop 0.17 RPC - HBASE-780 Can't scan '.META.' from new shell - HBASE-424 Should be able to enable/disable .META. table - HBASE-771 Names legal in 0.1 are not in 0.2; breaks migration - HBASE-788 Div by zero in Master.jsp (Clint Morgan via Jim Kellerman) - HBASE-791 RowCount doesn't work (Jean-Daniel Cryans via Stack) - HBASE-751 dfs exception and regionserver stuck during heavy write load - HBASE-793 HTable.getStartKeys() ignores table names when matching columns - (Andrew Purtell and Dru Jensen via Stack) - HBASE-790 During import, single region blocks requests for >10 minutes, - thread dumps, throws out pending requests, and continues - (Jonathan Gray via Stack) - - IMPROVEMENTS - HBASE-559 MR example job to count table rows - HBASE-596 DemoClient.py (Ivan Begtin via Stack) - HBASE-581 Allow adding filters to TableInputFormat (At same time, ensure TIF - is subclassable) (David Alves via Stack) - HBASE-603 When an exception bubbles out of getRegionServerWithRetries, wrap - the exception with a RetriesExhaustedException - HBASE-600 Filters have excessive DEBUG logging - HBASE-611 regionserver should do basic health check before reporting - alls-well to the master - HBASE-614 Retiring regions is not used; exploit or remove - HBASE-538 Improve exceptions that come out on client-side - HBASE-569 DemoClient.php (Jim R. Wilson via Stack) - HBASE-522 Where new Text(string) might be used in client side method calls, - add an overload that takes String (Done as part of HBASE-82) - HBASE-570 Remove HQL unit test (Done as part of HBASE-82 commit). - HBASE-626 Use Visitor pattern in MetaRegion to reduce code clones in HTable - and HConnectionManager (Jean-Daniel Cryans via Stack) - HBASE-621 Make MAX_VERSIONS work like TTL: In scans and gets, check - MAX_VERSIONs setting and return that many only rather than wait on - compaction (Jean-Daniel Cryans via Stack) - HBASE-504 Allow HMsg's carry a payload: e.g. exception that happened over - on the remote side. - HBASE-583 RangeRowFilter/ColumnValueFilter to allow choice of rows based on - a (lexicographic) comparison to column's values - (Clint Morgan via Stack) - HBASE-579 Add hadoop 0.17.x - HBASE-660 [Migration] addColumn/deleteColumn functionality in MetaUtils - HBASE-632 HTable.getMetadata is very inefficient - HBASE-671 New UI page displaying all regions in a table should be sorted - HBASE-672 Sort regions in the regionserver UI - HBASE-677 Make HTable, HRegion, HRegionServer, HStore, and HColumnDescriptor - subclassable (Clint Morgan via Stack) - HBASE-682 Regularize toString - HBASE-672 Sort regions in the regionserver UI - HBASE-469 Streamline HStore startup and compactions - HBASE-544 Purge startUpdate from internal code and test cases - HBASE-557 HTable.getRow() should receive RowResult objects - HBASE-452 "region offline" should throw IOException, not IllegalStateException - HBASE-541 Update hadoop jars. - HBASE-523 package-level javadoc should have example client - HBASE-415 Rewrite leases to use DelayedBlockingQueue instead of polling - HBASE-35 Make BatchUpdate public in the API - HBASE-409 Add build path to svn:ignore list (Edward Yoon via Stack) - HBASE-408 Add .classpath and .project to svn:ignore list - (Edward Yoon via Stack) - HBASE-410 Speed up the test suite (make test timeout 5 instead of 15 mins). - HBASE-281 Shell should allow deletions in .META. and -ROOT- tables - (Edward Yoon & Bryan Duxbury via Stack) - HBASE-56 Unnecessary HQLClient Object creation in a shell loop - (Edward Yoon via Stack) - HBASE-3 rest server: configure number of threads for jetty - (Bryan Duxbury via Stack) - HBASE-416 Add apache-style logging to REST server and add setting log - level, etc. - HBASE-406 Remove HTable and HConnection close methods - (Bryan Duxbury via Stack) - HBASE-418 Move HMaster and related classes into master package - (Bryan Duxbury via Stack) - HBASE-410 Speed up the test suite - Apparently test timeout was too - aggressive for Hudson. TestLogRolling timed out even though it - was operating properly. Change test timeout to 10 minutes. - HBASE-436 website: http://hadoop.apache.org/hbase - HBASE-417 Factor TableOperation and subclasses into separate files from - HMaster (Bryan Duxbury via Stack) - HBASE-440 Add optional log roll interval so that log files are garbage - collected - HBASE-407 Keep HRegionLocation information in LRU structure - HBASE-444 hbase is very slow at determining table is not present - HBASE-438 XMLOutputter state should be initialized. - HBASE-414 Move client classes into client package - HBASE-79 When HBase needs to be migrated, it should display a message on - stdout, not just in the logs - HBASE-461 Simplify leases. - HBASE-419 Move RegionServer and related classes into regionserver package - HBASE-457 Factor Master into Master, RegionManager, and ServerManager - HBASE-464 HBASE-419 introduced javadoc errors - HBASE-468 Move HStoreKey back to o.a.h.h - HBASE-442 Move internal classes out of HRegionServer - HBASE-466 Move HMasterInterface, HRegionInterface, and - HMasterRegionInterface into o.a.h.h.ipc - HBASE-479 Speed up TestLogRolling - HBASE-480 Tool to manually merge two regions - HBASE-477 Add support for an HBASE_CLASSPATH - HBASE-443 Move internal classes out of HStore - HBASE-515 At least double default timeouts between regionserver and master - HBASE-529 RegionServer needs to recover if datanode goes down - HBASE-456 Clearly state which ports need to be opened in order to run HBase - HBASE-536 Remove MiniDFS startup from MiniHBaseCluster - HBASE-521 Improve client scanner interface - HBASE-562 Move Exceptions to subpackages (Jean-Daniel Cryans via Stack) - HBASE-631 HTable.getRow() for only a column family - (Jean-Daniel Cryans via Stack) - HBASE-731 Add a meta refresh tag to the Web ui for master and region server - (Jean-Daniel Cryans via Stack) - HBASE-735 hbase shell doesn't trap CTRL-C signal (Jean-Daniel Cryans via Stack) - HBASE-730 On startup, rinse STARTCODE and SERVER from .META. - (Jean-Daniel Cryans via Stack) - HBASE-738 overview.html in need of updating (Izaak Rubin via Stack) - HBASE-745 scaling of one regionserver, improving memory and cpu usage (partial) - (LN via Stack) - HBASE-746 Batching row mutations via thrift (Tim Sell via Stack) - HBASE-772 Up default lease period from 60 to 120 seconds - HBASE-779 Test changing hbase.hregion.memcache.block.multiplier to 2 - HBASE-783 For single row, single family retrieval, getRow() works half - as fast as getScanner().next() (Jean-Daniel Cryans via Stack) - HBASE-789 add clover coverage report targets (Rong-en Fan via Stack) - - NEW FEATURES - HBASE-47 Option to set TTL for columns in hbase - (Andrew Purtell via Bryan Duxbury and Stack) - HBASE-23 UI listing regions should be sorted by address and show additional - region state (Jean-Daniel Cryans via Stack) - HBASE-639 Add HBaseAdmin.getTableDescriptor function - HBASE-533 Region Historian - HBASE-487 Replace hql w/ a hbase-friendly jirb or jython shell - HBASE-548 Tool to online single region - HBASE-71 Master should rebalance region assignments periodically - HBASE-512 Add configuration for global aggregate memcache size - HBASE-40 Add a method of getting multiple (but not all) cells for a row - at once - HBASE-506 When an exception has to escape ServerCallable due to exhausted - retries, show all the exceptions that lead to this situation - HBASE-747 Add a simple way to do batch updates of many rows (Jean-Daniel - Cryans via JimK) - HBASE-733 Enhance Cell so that it can contain multiple values at multiple - timestamps - HBASE-511 Do exponential backoff in clients on NSRE, WRE, ISE, etc. - (Andrew Purtell via Jim Kellerman) - - OPTIMIZATIONS - HBASE-430 Performance: Scanners and getRow return maps with duplicate data - -Release 0.1.3 - 07/25/2008 - - BUG FIXES - HBASE-644 DroppedSnapshotException but RegionServer doesn't restart - HBASE-645 EOFException opening region (HBASE-550 redux) - HBASE-641 Improve master split logging - HBASE-642 Splitting log in a hostile environment -- bad hdfs -- we drop - write-ahead-log edits - HBASE-646 EOFException opening HStoreFile info file (spin on HBASE-645 and 550) - HBASE-648 If mapfile index is empty, run repair - HBASE-659 HLog#cacheFlushLock not cleared; hangs a region - HBASE-663 Incorrect sequence number for cache flush - HBASE-652 Dropping table fails silently if table isn't disabled - HBASE-674 Memcache size unreliable - HBASE-665 server side scanner doesn't honor stop row - HBASE-681 NPE in Memcache (Clint Morgan via Jim Kellerman) - HBASE-680 config parameter hbase.io.index.interval should be - hbase.index.interval, accroding to HBaseMapFile.HbaseWriter - (LN via Stack) - HBASE-684 unnecessary iteration in HMemcache.internalGet? got much better - reading performance after break it (LN via Stack) - HBASE-686 MemcacheScanner didn't return the first row(if it exists), - because HScannerInterface's output incorrect (LN via Jim Kellerman) - HBASE-613 Timestamp-anchored scanning fails to find all records - HBASE-709 Deadlock while rolling WAL-log while finishing flush - HBASE-707 High-load import of data into single table/family never triggers split - HBASE-710 If clocks are way off, then we can have daughter split come - before rather than after its parent in .META. - -Release 0.1.2 - 05/13/2008 - - BUG FIXES - HBASE-577 NPE getting scanner - HBASE-574 HBase does not load hadoop native libs (Rong-En Fan via Stack). - HBASE-11 Unexpected exits corrupt DFS - best we can do until we have at - least a subset of HADOOP-1700 - HBASE-573 HBase does not read hadoop-*.xml for dfs configuration after - moving out hadoop/contrib - HBASE-12 when hbase regionserver restarts, it says "impossible state for - createLease()" - HBASE-575 master dies with stack overflow error if rootdir isn't qualified - HBASE-500 Regionserver stuck on exit - HBASE-582 HBase 554 forgot to clear results on each iteration caused by a filter - (Clint Morgan via Stack) - HBASE-532 Odd interaction between HRegion.get, HRegion.deleteAll and compactions - HBASE-590 HBase migration tool does not get correct FileSystem or root - directory if configuration is not correct - HBASE-595 RowFilterInterface.rowProcessed() is called *before* fhe final - filtering decision is made (Clint Morgan via Stack) - HBASE-586 HRegion runs HStore memcache snapshotting -- fix it so only HStore - knows about workings of memcache - HBASE-572 Backport HBASE-512 to 0.1 branch - HBASE-588 Still a 'hole' in scanners, even after HBASE-532 - HBASE-604 Don't allow CLASSPATH from environment pollute the hbase CLASSPATH - HBASE-608 HRegionServer::getThisIP() checks hadoop config var for dns interface name - (Jim R. Wilson via Stack) - HBASE-609 Master doesn't see regionserver edits because of clock skew - HBASE-607 MultiRegionTable.makeMultiRegionTable is not deterministic enough - for regression tests - HBASE-478 offlining of table does not run reliably - HBASE-618 We always compact if 2 files, regardless of the compaction threshold setting - HBASE-619 Fix 'logs' link in UI - HBASE-620 testmergetool failing in branch and trunk since hbase-618 went in - - IMPROVEMENTS - HBASE-559 MR example job to count table rows - HBASE-578 Upgrade branch to 0.16.3 hadoop. - HBASE-596 DemoClient.py (Ivan Begtin via Stack) - - -Release 0.1.1 - 04/11/2008 - - BUG FIXES - HBASE-550 EOF trying to read reconstruction log stops region deployment - HBASE-551 Master stuck splitting server logs in shutdown loop; on each - iteration, edits are aggregated up into the millions - HBASE-505 Region assignments should never time out so long as the region - server reports that it is processing the open request - HBASE-552 Fix bloom filter bugs (Andrzej Bialecki via Jim Kellerman) - HBASE-507 Add sleep between retries - HBASE-555 Only one Worker in HRS; on startup, if assigned tens of regions, - havoc of reassignments because open processing is done in series - HBASE-547 UI shows hadoop version, not hbase version - HBASE-561 HBase package does not include LICENSE.txt nor build.xml - HBASE-556 Add 0.16.2 to hbase branch -- if it works - HBASE-563 TestRowFilterAfterWrite erroneously sets master address to - 0.0.0.0:60100 rather than relying on conf - HBASE-554 filters generate StackOverflowException (Clint Morgan via - Jim Kellerman) - HBASE-567 Reused BatchUpdate instances accumulate BatchOperations - - NEW FEATURES - HBASE-548 Tool to online single region - -Release 0.1.0 - - INCOMPATIBLE CHANGES - HADOOP-2750 Deprecated methods startBatchUpdate, commitBatch, abortBatch, - and renewLease have been removed from HTable (Bryan Duxbury via - Jim Kellerman) - HADOOP-2786 Move hbase out of hadoop core - HBASE-403 Fix build after move of hbase in svn - HBASE-494 Up IPC version on 0.1 branch so we cannot mistakenly connect - with a hbase from 0.16.0 - - NEW FEATURES - HBASE-506 When an exception has to escape ServerCallable due to exhausted retries, - show all the exceptions that lead to this situation - - OPTIMIZATIONS - - BUG FIXES - HADOOP-2731 Under load, regions become extremely large and eventually cause - region servers to become unresponsive - HADOOP-2693 NPE in getClosestRowBefore (Bryan Duxbury & Stack) - HADOOP-2599 Some minor improvements to changes in HADOOP-2443 - (Bryan Duxbury & Stack) - HADOOP-2773 Master marks region offline when it is recovering from a region - server death - HBASE-425 Fix doc. so it accomodates new hbase untethered context - HBase-421 TestRegionServerExit broken - HBASE-426 hbase can't find remote filesystem - HBASE-446 Fully qualified hbase.rootdir doesn't work - HBASE-428 Under continuous upload of rows, WrongRegionExceptions are - thrown that reach the client even after retries - HBASE-490 Doubly-assigned .META.; master uses one and clients another - HBASE-496 impossible state for createLease writes 400k lines in about 15mins - HBASE-472 Passing on edits, we dump all to log - HBASE-79 When HBase needs to be migrated, it should display a message on - stdout, not just in the logs - HBASE-495 No server address listed in .META. - HBASE-433 HBASE-251 Region server should delete restore log after successful - restore, Stuck replaying the edits of crashed machine. - HBASE-27 hregioninfo cell empty in meta table - HBASE-501 Empty region server address in info:server entry and a - startcode of -1 in .META. - HBASE-516 HStoreFile.finalKey does not update the final key if it is not - the top region of a split region - HBASE-524 Problems with getFull - HBASE-514 table 'does not exist' when it does - HBASE-537 Wait for hdfs to exit safe mode - HBASE-534 Double-assignment at SPLIT-time - - IMPROVEMENTS - HADOOP-2555 Refactor the HTable#get and HTable#getRow methods to avoid - repetition of retry-on-failure logic (thanks to Peter Dolan and - Bryan Duxbury) - HBASE-281 Shell should allow deletions in .META. and -ROOT- tables - HBASE-480 Tool to manually merge two regions - HBASE-477 Add support for an HBASE_CLASSPATH - HBASE-515 At least double default timeouts between regionserver and master - HBASE-482 package-level javadoc should have example client or at least - point at the FAQ - HBASE-497 RegionServer needs to recover if datanode goes down - HBASE-456 Clearly state which ports need to be opened in order to run HBase - HBASE-483 Merge tool won't merge two overlapping regions - HBASE-476 RegexpRowFilter behaves incorectly when there are multiple store - files (Clint Morgan via Jim Kellerman) - HBASE-527 RegexpRowFilter does not work when there are columns from - multiple families (Clint Morgan via Jim Kellerman) - -Release 0.16.0 - - 2008/02/04 HBase is now a subproject of Hadoop. The first HBase release as - a subproject will be release 0.1.0 which will be equivalent to - the version of HBase included in Hadoop 0.16.0. In order to - accomplish this, the HBase portion of HBASE-288 (formerly - HADOOP-1398) has been backed out. Once 0.1.0 is frozen (depending - mostly on changes to infrastructure due to becoming a sub project - instead of a contrib project), this patch will re-appear on HBase - trunk. - - INCOMPATIBLE CHANGES - HADOOP-2056 A table with row keys containing colon fails to split regions - HADOOP-2079 Fix generated HLog, HRegion names - HADOOP-2495 Minor performance improvements: Slim-down BatchOperation, etc. - HADOOP-2506 Remove the algebra package - HADOOP-2519 Performance improvements: Customized RPC serialization - HADOOP-2478 Restructure how HBase lays out files in the file system (phase 1) - (test input data) - HADOOP-2478 Restructure how HBase lays out files in the file system (phase 2) - Includes migration tool org.apache.hadoop.hbase.util.Migrate - HADOOP-2558 org.onelab.filter.BloomFilter class uses 8X the memory it should - be using - - NEW FEATURES - HADOOP-2061 Add new Base64 dialects - HADOOP-2084 Add a LocalHBaseCluster - HADOOP-2068 RESTful interface (Bryan Duxbury via Stack) - HADOOP-2316 Run REST servlet outside of master - (Bryan Duxbury & Stack) - HADOOP-1550 No means of deleting a'row' (Bryan Duxbuery via Stack) - HADOOP-2384 Delete all members of a column family on a specific row - (Bryan Duxbury via Stack) - HADOOP-2395 Implement "ALTER TABLE ... CHANGE column" operation - (Bryan Duxbury via Stack) - HADOOP-2240 Truncate for hbase (Edward Yoon via Stack) - HADOOP-2389 Provide multiple language bindings for HBase (Thrift) - (David Simpson via Stack) - - OPTIMIZATIONS - HADOOP-2479 Save on number of Text object creations - HADOOP-2485 Make mapfile index interval configurable (Set default to 32 - instead of 128) - HADOOP-2553 Don't make Long objects calculating hbase type hash codes - HADOOP-2377 Holding open MapFile.Readers is expensive, so use less of them - HADOOP-2407 Keeping MapFile.Reader open is expensive: Part 2 - HADOOP-2533 Performance: Scanning, just creating MapWritable in next - consumes >20% CPU - HADOOP-2443 Keep lazy cache of regions in client rather than an - 'authoritative' list (Bryan Duxbury via Stack) - HADOOP-2600 Performance: HStore.getRowKeyAtOrBefore should use - MapFile.Reader#getClosest (before) - (Bryan Duxbury via Stack) - - BUG FIXES - HADOOP-2059 In tests, exceptions in min dfs shutdown should not fail test - (e.g. nightly #272) - HADOOP-2064 TestSplit assertion and NPE failures (Patch build #952 and #953) - HADOOP-2124 Use of `hostname` does not work on Cygwin in some cases - HADOOP-2083 TestTableIndex failed in #970 and #956 - HADOOP-2109 Fixed race condition in processing server lease timeout. - HADOOP-2137 hql.jsp : The character 0x19 is not valid - HADOOP-2109 Fix another race condition in processing dead servers, - Fix error online meta regions: was using region name and not - startKey as key for map.put. Change TestRegionServerExit to - always kill the region server for the META region. This makes - the test more deterministic and getting META reassigned was - problematic. - HADOOP-2155 Method expecting HBaseConfiguration throws NPE when given Configuration - HADOOP-2156 BufferUnderflowException for un-named HTableDescriptors - HADOOP-2161 getRow() is orders of magnitudes slower than get(), even on rows - with one column (Clint Morgan and Stack) - HADOOP-2040 Hudson hangs AFTER test has finished - HADOOP-2274 Excess synchronization introduced by HADOOP-2139 negatively - impacts performance - HADOOP-2196 Fix how hbase sits in hadoop 'package' product - HADOOP-2276 Address regression caused by HADOOP-2274, fix HADOOP-2173 (When - the master times out a region servers lease, the region server - may not restart) - HADOOP-2253 getRow can return HBASE::DELETEVAL cells - (Bryan Duxbury via Stack) - HADOOP-2295 Fix assigning a region to multiple servers - HADOOP-2234 TableInputFormat erroneously aggregates map values - HADOOP-2308 null regioninfo breaks meta scanner - HADOOP-2304 Abbreviated symbol parsing error of dir path in jar command - (Edward Yoon via Stack) - HADOOP-2320 Committed TestGet2 is managled (breaks build). - HADOOP-2322 getRow(row, TS) client interface not properly connected - HADOOP-2309 ConcurrentModificationException doing get of all region start keys - HADOOP-2321 TestScanner2 does not release resources which sometimes cause the - test to time out - HADOOP-2315 REST servlet doesn't treat / characters in row key correctly - (Bryan Duxbury via Stack) - HADOOP-2332 Meta table data selection in Hbase Shell - (Edward Yoon via Stack) - HADOOP-2347 REST servlet not thread safe but run in a threaded manner - (Bryan Duxbury via Stack) - HADOOP-2365 Result of HashFunction.hash() contains all identical values - HADOOP-2362 Leaking hdfs file handle on region split - HADOOP-2338 Fix NullPointerException in master server. - HADOOP-2380 REST servlet throws NPE when any value node has an empty string - (Bryan Duxbury via Stack) - HADOOP-2350 Scanner api returns null row names, or skips row names if - different column families do not have entries for some rows - HADOOP-2283 AlreadyBeingCreatedException (Was: Stuck replay of failed - regionserver edits) - HADOOP-2392 TestRegionServerExit has new failure mode since HADOOP-2338 - HADOOP-2324 Fix assertion failures in TestTableMapReduce - HADOOP-2396 NPE in HMaster.cancelLease - HADOOP-2397 The only time that a meta scanner should try to recover a log is - when the master is starting - HADOOP-2417 Fix critical shutdown problem introduced by HADOOP-2338 - HADOOP-2418 Fix assertion failures in TestTableMapReduce, TestTableIndex, - and TestTableJoinMapReduce - HADOOP-2414 Fix ArrayIndexOutOfBoundsException in bloom filters. - HADOOP-2430 Master will not shut down if there are no active region servers - HADOOP-2199 Add tools for going from hregion filename to region name in logs - HADOOP-2441 Fix build failures in TestHBaseCluster - HADOOP-2451 End key is incorrectly assigned in many region splits - HADOOP-2455 Error in Help-string of CREATE command (Edward Yoon via Stack) - HADOOP-2465 When split parent regions are cleaned up, not all the columns are - deleted - HADOOP-2468 TestRegionServerExit failed in Hadoop-Nightly #338 - HADOOP-2467 scanner truncates resultset when > 1 column families - HADOOP-2503 REST Insert / Select encoding issue (Bryan Duxbury via Stack) - HADOOP-2505 formatter classes missing apache license - HADOOP-2504 REST servlet method for deleting a scanner was not properly - mapped (Bryan Duxbury via Stack) - HADOOP-2507 REST servlet does not properly base64 row keys and column names - (Bryan Duxbury via Stack) - HADOOP-2530 Missing type in new hbase custom RPC serializer - HADOOP-2490 Failure in nightly #346 (Added debugging of hudson failures). - HADOOP-2558 fixes for build up on hudson (part 1, part 2, part 3, part 4) - HADOOP-2500 Unreadable region kills region servers - HADOOP-2579 Initializing a new HTable object against a nonexistent table - throws a NoServerForRegionException instead of a - TableNotFoundException when a different table has been created - previously (Bryan Duxbury via Stack) - HADOOP-2587 Splits blocked by compactions cause region to be offline for - duration of compaction. - HADOOP-2592 Scanning, a region can let out a row that its not supposed - to have - HADOOP-2493 hbase will split on row when the start and end row is the - same cause data loss (Bryan Duxbury via Stack) - HADOOP-2629 Shell digests garbage without complaint - HADOOP-2619 Compaction errors after a region splits - HADOOP-2621 Memcache flush flushing every 60 secs with out considering - the max memcache size - HADOOP-2584 Web UI displays an IOException instead of the Tables - HADOOP-2650 Remove Writables.clone and use WritableUtils.clone from - hadoop instead - HADOOP-2668 Documentation and improved logging so fact that hbase now - requires migration comes as less of a surprise - HADOOP-2686 Removed tables stick around in .META. - HADOOP-2688 IllegalArgumentException processing a shutdown stops - server going down and results in millions of lines of output - HADOOP-2706 HBase Shell crash - HADOOP-2712 under load, regions won't split - HADOOP-2675 Options not passed to rest/thrift - HADOOP-2722 Prevent unintentional thread exit in region server and master - HADOOP-2718 Copy Constructor HBaseConfiguration(Configuration) will override - hbase configurations if argumant is not an instance of - HBaseConfiguration. - HADOOP-2753 Back out 2718; programmatic config works but hbase*xml conf - is overridden - HADOOP-2718 Copy Constructor HBaseConfiguration(Configuration) will override - hbase configurations if argumant is not an instance of - HBaseConfiguration (Put it back again). - HADOOP-2631 2443 breaks HTable.getStartKeys when there is more than one - table or table you are enumerating isn't the first table - Delete empty file: src/contrib/hbase/src/java/org/apache/hadoop/hbase/mapred/ - TableOutputCollector.java per Nigel Daley - - IMPROVEMENTS - HADOOP-2401 Add convenience put method that takes writable - (Johan Oskarsson via Stack) - HADOOP-2074 Simple switch to enable DEBUG level-logging in hbase - HADOOP-2088 Make hbase runnable in $HADOOP_HOME/build(/contrib/hbase) - HADOOP-2126 Use Bob Jenkins' hash for bloom filters - HADOOP-2157 Make Scanners implement Iterable - HADOOP-2176 Htable.deleteAll documentation is ambiguous - HADOOP-2139 (phase 1) Increase parallelism in region servers. - HADOOP-2267 [Hbase Shell] Change the prompt's title from 'hbase' to 'hql'. - (Edward Yoon via Stack) - HADOOP-2139 (phase 2) Make region server more event driven - HADOOP-2289 Useless efforts of looking for the non-existant table in select - command. - (Edward Yoon via Stack) - HADOOP-2257 Show a total of all requests and regions on the web ui - (Paul Saab via Stack) - HADOOP-2261 HTable.abort no longer throws exception if there is no active update. - HADOOP-2287 Make hbase unit tests take less time to complete. - HADOOP-2262 Retry n times instead of n**2 times. - HADOOP-1608 Relational Algrebra Operators - (Edward Yoon via Stack) - HADOOP-2198 HTable should have method to return table metadata - HADOOP-2296 hbase shell: phantom columns show up from select command - HADOOP-2297 System.exit() Handling in hbase shell jar command - (Edward Yoon via Stack) - HADOOP-2224 Add HTable.getRow(ROW, ts) - (Bryan Duxbury via Stack) - HADOOP-2339 Delete command with no WHERE clause - (Edward Yoon via Stack) - HADOOP-2299 Support inclusive scans (Bryan Duxbury via Stack) - HADOOP-2333 Client side retries happen at the wrong level - HADOOP-2357 Compaction cleanup; less deleting + prevent possible file leaks - HADOOP-2392 TestRegionServerExit has new failure mode since HADOOP-2338 - HADOOP-2370 Allow column families with an unlimited number of versions - (Edward Yoon via Stack) - HADOOP-2047 Add an '--master=X' and '--html' command-line parameters to shell - (Edward Yoon via Stack) - HADOOP-2351 If select command returns no result, it doesn't need to show the - header information (Edward Yoon via Stack) - HADOOP-2285 Add being able to shutdown regionservers (Dennis Kubes via Stack) - HADOOP-2458 HStoreFile.writeSplitInfo should just call - HStoreFile.Reference.write - HADOOP-2471 Add reading/writing MapFile to PerformanceEvaluation suite - HADOOP-2522 Separate MapFile benchmark from PerformanceEvaluation - (Tom White via Stack) - HADOOP-2502 Insert/Select timestamp, Timestamp data type in HQL - (Edward Yoon via Stack) - HADOOP-2450 Show version (and svn revision) in hbase web ui - HADOOP-2472 Range selection using filter (Edward Yoon via Stack) - HADOOP-2548 Make TableMap and TableReduce generic - (Frederik Hedberg via Stack) - HADOOP-2557 Shell count function (Edward Yoon via Stack) - HADOOP-2589 Change an classes/package name from Shell to hql - (Edward Yoon via Stack) - HADOOP-2545 hbase rest server should be started with hbase-daemon.sh - HADOOP-2525 Same 2 lines repeated 11 million times in HMaster log upon - HMaster shutdown - HADOOP-2616 hbase not spliting when the total size of region reaches max - region size * 1.5 - HADOOP-2643 Make migration tool smarter. - -Release 0.15.1 -Branch 0.15 - - INCOMPATIBLE CHANGES - HADOOP-1931 Hbase scripts take --ARG=ARG_VALUE when should be like hadoop - and do ---ARG ARG_VALUE - - NEW FEATURES - HADOOP-1768 FS command using Hadoop FsShell operations - (Edward Yoon via Stack) - HADOOP-1784 Delete: Fix scanners and gets so they work properly in presence - of deletes. Added a deleteAll to remove all cells equal to or - older than passed timestamp. Fixed compaction so deleted cells - do not make it out into compacted output. Ensure also that - versions > column max are dropped compacting. - HADOOP-1720 Addition of HQL (Hbase Query Language) support in Hbase Shell. - The old shell syntax has been replaced by HQL, a small SQL-like - set of operators, for creating, altering, dropping, inserting, - deleting, and selecting, etc., data in hbase. - (Inchul Song and Edward Yoon via Stack) - HADOOP-1913 Build a Lucene index on an HBase table - (Ning Li via Stack) - HADOOP-1957 Web UI with report on cluster state and basic browsing of tables - - OPTIMIZATIONS - - BUG FIXES - HADOOP-1527 Region server won't start because logdir exists - HADOOP-1723 If master asks region server to shut down, by-pass return of - shutdown message - HADOOP-1729 Recent renaming or META tables breaks hbase shell - HADOOP-1730 unexpected null value causes META scanner to exit (silently) - HADOOP-1747 On a cluster, on restart, regions multiply assigned - HADOOP-1776 Fix for sporadic compaction failures closing and moving - compaction result - HADOOP-1780 Regions are still being doubly assigned - HADOOP-1797 Fix NPEs in MetaScanner constructor - HADOOP-1799 Incorrect classpath in binary version of Hadoop - HADOOP-1805 Region server hang on exit - HADOOP-1785 TableInputFormat.TableRecordReader.next has a bug - (Ning Li via Stack) - HADOOP-1800 output should default utf8 encoding - HADOOP-1801 When hdfs is yanked out from under hbase, hbase should go down gracefully - HADOOP-1813 OOME makes zombie of region server - HADOOP-1814 TestCleanRegionServerExit fails too often on Hudson - HADOOP-1820 Regionserver creates hlogs without bound - (reverted 2007/09/25) (Fixed 2007/09/30) - HADOOP-1821 Replace all String.getBytes() with String.getBytes("UTF-8") - HADOOP-1832 listTables() returns duplicate tables - HADOOP-1834 Scanners ignore timestamp passed on creation - HADOOP-1847 Many HBase tests do not fail well. - HADOOP-1847 Many HBase tests do not fail well. (phase 2) - HADOOP-1870 Once file system failure has been detected, don't check it again - and get on with shutting down the hbase cluster. - HADOOP-1888 NullPointerException in HMemcacheScanner (reprise) - HADOOP-1903 Possible data loss if Exception happens between snapshot and - flush to disk. - HADOOP-1920 Wrapper scripts broken when hadoop in one location and hbase in - another - HADOOP-1923, HADOOP-1924 a) tests fail sporadically because set up and tear - down is inconsistent b) TestDFSAbort failed in nightly #242 - HADOOP-1929 Add hbase-default.xml to hbase jar - HADOOP-1941 StopRowFilter throws NPE when passed null row - HADOOP-1966 Make HBase unit tests more reliable in the Hudson environment. - HADOOP-1975 HBase tests failing with java.lang.NumberFormatException - HADOOP-1990 Regression test instability affects nightly and patch builds - HADOOP-1996 TestHStoreFile fails on windows if run multiple times - HADOOP-1937 When the master times out a region server's lease, it is too - aggressive in reclaiming the server's log. - HADOOP-2004 webapp hql formatting bugs - HADOOP_2011 Make hbase daemon scripts take args in same order as hadoop - daemon scripts - HADOOP-2017 TestRegionServerAbort failure in patch build #903 and - nightly #266 - HADOOP-2029 TestLogRolling fails too often in patch and nightlies - HADOOP-2038 TestCleanRegionExit failed in patch build #927 - - IMPROVEMENTS - HADOOP-1737 Make HColumnDescriptor data publically members settable - HADOOP-1746 Clean up findbugs warnings - HADOOP-1757 Bloomfilters: single argument constructor, use enum for bloom - filter types - HADOOP-1760 Use new MapWritable and SortedMapWritable classes from - org.apache.hadoop.io - HADOOP-1793 (Phase 1) Remove TestHClient (Phase2) remove HClient. - HADOOP-1794 Remove deprecated APIs - HADOOP-1802 Startup scripts should wait until hdfs as cleared 'safe mode' - HADOOP-1833 bin/stop_hbase.sh returns before it completes - (Izaak Rubin via Stack) - HADOOP-1835 Updated Documentation for HBase setup/installation - (Izaak Rubin via Stack) - HADOOP-1868 Make default configuration more responsive - HADOOP-1884 Remove useless debugging log messages from hbase.mapred - HADOOP-1856 Add Jar command to hbase shell using Hadoop RunJar util - (Edward Yoon via Stack) - HADOOP-1928 Have master pass the regionserver the filesystem to use - HADOOP-1789 Output formatting - HADOOP-1960 If a region server cannot talk to the master before its lease - times out, it should shut itself down - HADOOP-2035 Add logo to webapps - - -Below are the list of changes before 2007-08-18 - - 1. HADOOP-1384. HBase omnibus patch. (jimk, Vuk Ercegovac, and Michael Stack) - 2. HADOOP-1402. Fix javadoc warnings in hbase contrib. (Michael Stack) - 3. HADOOP-1404. HBase command-line shutdown failing (Michael Stack) - 4. HADOOP-1397. Replace custom hbase locking with - java.util.concurrent.locks.ReentrantLock (Michael Stack) - 5. HADOOP-1403. HBase reliability - make master and region server more fault - tolerant. - 6. HADOOP-1418. HBase miscellaneous: unit test for HClient, client to do - 'Performance Evaluation', etc. - 7. HADOOP-1420, HADOOP-1423. Findbugs changes, remove reference to removed - class HLocking. - 8. HADOOP-1424. TestHBaseCluster fails with IllegalMonitorStateException. Fix - regression introduced by HADOOP-1397. - 9. HADOOP-1426. Make hbase scripts executable + add test classes to CLASSPATH. - 10. HADOOP-1430. HBase shutdown leaves regionservers up. - 11. HADOOP-1392. Part1: includes create/delete table; enable/disable table; - add/remove column. - 12. HADOOP-1392. Part2: includes table compaction by merging adjacent regions - that have shrunk in size. - 13. HADOOP-1445 Support updates across region splits and compactions - 14. HADOOP-1460 On shutdown IOException with complaint 'Cannot cancel lease - that is not held' - 15. HADOOP-1421 Failover detection, split log files. - For the files modified, also clean up javadoc, class, field and method - visibility (HADOOP-1466) - 16. HADOOP-1479 Fix NPE in HStore#get if store file only has keys < passed key. - 17. HADOOP-1476 Distributed version of 'Performance Evaluation' script - 18. HADOOP-1469 Asychronous table creation - 19. HADOOP-1415 Integrate BSD licensed bloom filter implementation. - 20. HADOOP-1465 Add cluster stop/start scripts for hbase - 21. HADOOP-1415 Provide configurable per-column bloom filters - part 2. - 22. HADOOP-1498. Replace boxed types with primitives in many places. - 23. HADOOP-1509. Made methods/inner classes in HRegionServer and HClient protected - instead of private for easier extension. Also made HRegion and HRegionInfo public too. - Added an hbase-default.xml property for specifying what HRegionInterface extension to use - for proxy server connection. (James Kennedy via Jim Kellerman) - 24. HADOOP-1534. [hbase] Memcache scanner fails if start key not present - 25. HADOOP-1537. Catch exceptions in testCleanRegionServerExit so we can see - what is failing. - 26. HADOOP-1543 [hbase] Add HClient.tableExists - 27. HADOOP-1519 [hbase] map/reduce interface for HBase. (Vuk Ercegovac and - Jim Kellerman) - 28. HADOOP-1523 Hung region server waiting on write locks - 29. HADOOP-1560 NPE in MiniHBaseCluster on Windows - 30. HADOOP-1531 Add RowFilter to HRegion.HScanner - Adds a row filtering interface and two implemenentations: A page scanner, - and a regex row/column-data matcher. (James Kennedy via Stack) - 31. HADOOP-1566 Key-making utility - 32. HADOOP-1415 Provide configurable per-column bloom filters. - HADOOP-1466 Clean up visibility and javadoc issues in HBase. - 33. HADOOP-1538 Provide capability for client specified time stamps in HBase - HADOOP-1466 Clean up visibility and javadoc issues in HBase. - 34. HADOOP-1589 Exception handling in HBase is broken over client server connections - 35. HADOOP-1375 a simple parser for hbase (Edward Yoon via Stack) - 36. HADOOP-1600 Update license in HBase code - 37. HADOOP-1589 Exception handling in HBase is broken over client server - 38. HADOOP-1574 Concurrent creates of a table named 'X' all succeed - 39. HADOOP-1581 Un-openable tablename bug - 40. HADOOP-1607 [shell] Clear screen command (Edward Yoon via Stack) - 41. HADOOP-1614 [hbase] HClient does not protect itself from simultaneous updates - 42. HADOOP-1468 Add HBase batch update to reduce RPC overhead - 43. HADOOP-1616 Sporadic TestTable failures - 44. HADOOP-1615 Replacing thread notification-based queue with - java.util.concurrent.BlockingQueue in HMaster, HRegionServer - 45. HADOOP-1606 Updated implementation of RowFilterSet, RowFilterInterface - (Izaak Rubin via Stack) - 46. HADOOP-1579 Add new WhileMatchRowFilter and StopRowFilter filters - (Izaak Rubin via Stack) - 47. HADOOP-1637 Fix to HScanner to Support Filters, Add Filter Tests to - TestScanner2 (Izaak Rubin via Stack) - 48. HADOOP-1516 HClient fails to readjust when ROOT or META redeployed on new - region server - 49. HADOOP-1646 RegionServer OOME's under sustained, substantial loading by - 10 concurrent clients - 50. HADOOP-1468 Add HBase batch update to reduce RPC overhead (restrict batches - to a single row at a time) - 51. HADOOP-1528 HClient for multiple tables (phase 1) (James Kennedy & JimK) - 52. HADOOP-1528 HClient for multiple tables (phase 2) all HBase client side code - (except TestHClient and HBaseShell) have been converted to use the new client - side objects (HTable/HBaseAdmin/HConnection) instead of HClient. - 53. HADOOP-1528 HClient for multiple tables - expose close table function - 54. HADOOP-1466 Clean up warnings, visibility and javadoc issues in HBase. - 55. HADOOP-1662 Make region splits faster - 56. HADOOP-1678 On region split, master should designate which host should - serve daughter splits. Phase 1: Master balances load for new regions and - when a region server fails. - 57. HADOOP-1678 On region split, master should designate which host should - serve daughter splits. Phase 2: Master assigns children of split region - instead of HRegionServer serving both children. - 58. HADOOP-1710 All updates should be batch updates - 59. HADOOP-1711 HTable API should use interfaces instead of concrete classes as - method parameters and return values - 60. HADOOP-1644 Compactions should not block updates - 60. HADOOP-1672 HBase Shell should use new client classes - (Edward Yoon via Stack). - 61. HADOOP-1709 Make HRegionInterface more like that of HTable - HADOOP-1725 Client find of table regions should not include offlined, split parents -= diff --git a/RELEASENOTES.md b/RELEASENOTES.md new file mode 100644 index 00000000000..78468fcfe4b --- /dev/null +++ b/RELEASENOTES.md @@ -0,0 +1,10017 @@ +# RELEASENOTES + + + +# HBASE 2.2.0 Release Notes + +These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements. + + +--- + +* [HBASE-21970](https://issues.apache.org/jira/browse/HBASE-21970) | *Major* | **Document that how to upgrade from 2.0 or 2.1 to 2.2+** + +See the document http://hbase.apache.org/book.html#upgrade2.2 about how to upgrade from 2.0 or 2.1 to 2.2+. + +HBase 2.2+ uses a new Procedure form assiging/unassigning/moving Regions. It does not process HBase 2.1 and 2.0's Unassign/Assign Procedure types. Upgrade requires that we first drain the Master Procedure Store of old style Procedures before starting the new 2.2 Master. So you need to make sure that before you kill the old version (2.0 or 2.1) Master, there is no region in transition. And once the new version (2.2+) Master is up, you can rolling upgrade RegionServers one by one. + +And there is a more safer way if you are running 2.1.1+ or 2.0.3+ cluster. It need four steps to upgrade Master. + +1. Shutdown both active and standby Masters (Your cluster will continue to server reads and writes without interruption). +2. Set the property hbase.procedure.upgrade-to-2-2 to true in hbase-site.xml for the Master, and start only one Master, still using the 2.1.1+ (or 2.0.3+) version. +3. Wait until the Master quits. Confirm that there is a 'READY TO ROLLING UPGRADE' message in the Master log as the cause of the shutdown. The Procedure Store is now empty. +4. Start new Masters with the new 2.2+ version. + +Then you can rolling upgrade RegionServers one by one. See HBASE-21075 for more details. + + +--- + +* [HBASE-21536](https://issues.apache.org/jira/browse/HBASE-21536) | *Trivial* | **Fix completebulkload usage instructions** + +Added completebulkload short name for BulkLoadHFilesTool to bin/hbase. + + +--- + +* [HBASE-22500](https://issues.apache.org/jira/browse/HBASE-22500) | *Blocker* | **Modify pom and jenkins jobs for hadoop versions** + +Change the default hadoop-3 version to 3.1.2. Drop the support for the releases which are effected by CVE-2018-8029, see this email https://lists.apache.org/thread.html/3d6831c3893cd27b6850aea2feff7d536888286d588e703c6ffd2e82@%3Cuser.hadoop.apache.org%3E + + +--- + +* [HBASE-22148](https://issues.apache.org/jira/browse/HBASE-22148) | *Blocker* | **Provide an alternative to CellUtil.setTimestamp** + + + +The `CellUtil.setTimestamp` method changes to be an API with audience `LimitedPrivate(COPROC)` in HBase 3.0. With that designation the API should remain stable within a given minor release line, but may change between minor releases. + +Previously, this method was deprecated in HBase 2.0 for removal in HBase 3.0. Deprecation messages in HBase 2.y releases have been updated to indicate the expected API audience change. + + +--- + +* [HBASE-21991](https://issues.apache.org/jira/browse/HBASE-21991) | *Major* | **Fix MetaMetrics issues - [Race condition, Faulty remove logic], few improvements** + +The class LossyCounting was unintentionally marked Public but was never intended to be part of our public API. This oversight has been corrected and LossyCounting is now marked as Private and going forward may be subject to additional breaking changes or removal without notice. If you have taken a dependency on this class we recommend cloning it locally into your project before upgrading to this release. + + +--- + +* [HBASE-22226](https://issues.apache.org/jira/browse/HBASE-22226) | *Trivial* | **Incorrect level for headings in asciidoc** + +Warnings for level headings are corrected in the book for the HBase Incompatibilities section. + + +--- + +* [HBASE-20970](https://issues.apache.org/jira/browse/HBASE-20970) | *Major* | **Update hadoop check versions for hadoop3 in hbase-personality** + +Add hadoop 3.0.3, 3.1.1 3.1.2 in our hadoop check jobs. + + +--- + +* [HBASE-21784](https://issues.apache.org/jira/browse/HBASE-21784) | *Major* | **Dump replication queue should show list of wal files ordered chronologically** + +The DumpReplicationQueues tool will now list replication queues sorted in chronological order. + + +--- + +* [HBASE-22384](https://issues.apache.org/jira/browse/HBASE-22384) | *Minor* | **Formatting issues in administration section of book** + +Fixes a formatting issue in the administration section of the book, where listing indentation were a little bit off. + + +--- + +* [HBASE-22399](https://issues.apache.org/jira/browse/HBASE-22399) | *Major* | **Change default hadoop-two.version to 2.8.x and remove the 2.7.x hadoop checks** + +Now the default hadoop-two.version has been changed to 2.8.5, and all hadoop versions before 2.8.2(exclude) will not be supported any more. + + +--- + +* [HBASE-22392](https://issues.apache.org/jira/browse/HBASE-22392) | *Trivial* | **Remove extra/useless +** + +Removed extra + in HRegion, HStore and LoadIncrementalHFiles for branch-2 and HRegion and HStore for branch-1. + + +--- + +* [HBASE-20494](https://issues.apache.org/jira/browse/HBASE-20494) | *Major* | **Upgrade com.yammer.metrics dependency** + +Updated metrics core from 3.2.1 to 3.2.6. + + +--- + +* [HBASE-22358](https://issues.apache.org/jira/browse/HBASE-22358) | *Minor* | **Change rubocop configuration for method length** + +The rubocop definition for the maximum method length was set to 75. + + +--- + +* [HBASE-22379](https://issues.apache.org/jira/browse/HBASE-22379) | *Minor* | **Fix Markdown for "Voting on Release Candidates" in book** + +Fixes the formatting of the "Voting on Release Candidates" to actually show the quote and code formatting of the RAT check. + + +--- + +* [HBASE-20851](https://issues.apache.org/jira/browse/HBASE-20851) | *Minor* | **Change rubocop config for max line length of 100** + +The rubocop configuration in the hbase-shell module now allows a line length with 100 characters, instead of 80 as before. For everything before 2.1.5 this change introduces rubocop itself. + + +--- + +* [HBASE-22054](https://issues.apache.org/jira/browse/HBASE-22054) | *Minor* | **Space Quota: Compaction is not working for super user in case of NO\_WRITES\_COMPACTIONS** + +This change allows the system and superusers to initiate compactions, even when a space quota violation policy disallows compactions from happening. The original intent behind disallowing of compactions was to prevent end-user compactions from creating undue I/O load, not disallowing \*any\* compaction in the system. + + +--- + +* [HBASE-22292](https://issues.apache.org/jira/browse/HBASE-22292) | *Blocker* | **PreemptiveFastFailInterceptor clean repeatedFailuresMap issue** + +Adds new configuration hbase.client.failure.map.cleanup.interval which defaults to ten minutes. + + +--- + +* [HBASE-22155](https://issues.apache.org/jira/browse/HBASE-22155) | *Major* | **Move 2.2.0 on to hbase-thirdparty-2.2.0** + + Updates libs used internally by hbase via hbase-thirdparty as follows: + + gson 2.8.1 -\\\> 2.8.5 + guava 22.0 -\\\> 27.1-jre + pb 3.5.1 -\\\> 3.7.0 + netty 4.1.17 -\\\> 4.1.34 + commons-collections4 4.1 -\\\> 4.3 + + +--- + +* [HBASE-22178](https://issues.apache.org/jira/browse/HBASE-22178) | *Major* | **Introduce a createTableAsync with TableDescriptor method in Admin** + +Introduced + +Future\ createTableAsync(TableDescriptor); + + +--- + +* [HBASE-22108](https://issues.apache.org/jira/browse/HBASE-22108) | *Major* | **Avoid passing null in Admin methods** + +Introduced these methods: +void move(byte[]); +void move(byte[], ServerName); +Future\ splitRegionAsync(byte[]); + +These methods are deprecated: +void move(byte[], byte[]) + + +--- + +* [HBASE-22152](https://issues.apache.org/jira/browse/HBASE-22152) | *Major* | **Create a jenkins file for yetus to processing GitHub PR** + +Add a new jenkins file for running pre commit check for GitHub PR. + + +--- + +* [HBASE-22007](https://issues.apache.org/jira/browse/HBASE-22007) | *Major* | **Add restoreSnapshot and cloneSnapshot with acl methods in AsyncAdmin** + +Add cloneSnapshot/restoreSnapshot with acl methods in AsyncAdmin. + + +--- + +* [HBASE-22123](https://issues.apache.org/jira/browse/HBASE-22123) | *Minor* | **REST gateway reports Insufficient permissions exceptions as 404 Not Found** + +When insufficient permissions, you now get: + +HTTP/1.1 403 Forbidden + +on the HTTP side, and in the message + +Forbidden +org.apache.hadoop.hbase.security.AccessDeniedException: org.apache.hadoop.hbase.security.AccessDeniedException: Insufficient permissions for user ‘myuser',action: get, tableName:mytable, family:cf. +at org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor.authorizeAccess(RangerAuthorizationCoprocessor.java:547) +and the rest of the ADE stack + + +--- + +* [HBASE-22100](https://issues.apache.org/jira/browse/HBASE-22100) | *Minor* | **False positive for error prone warnings in pre commit job** + +Now we will sort the javac WARNING/ERROR before generating diff in pre-commit so we can get a stable output for the error prone. The downside is that we just sort the output lexicographically so the line number will also be sorted lexicographically, which is a bit strange to human. + + +--- + +* [HBASE-22057](https://issues.apache.org/jira/browse/HBASE-22057) | *Major* | **Impose upper-bound on size of ZK ops sent in a single multi()** + +Exposes a new configuration property "zookeeper.multi.max.size" which dictates the maximum size of deletes that HBase will make to ZooKeeper in a single RPC. This property defaults to 1MB, which should fall beneath the default ZooKeeper limit of 2MB, controlled by "jute.maxbuffer". + + +--- + +* [HBASE-22052](https://issues.apache.org/jira/browse/HBASE-22052) | *Major* | **pom cleaning; filter out jersey-core in hadoop2 to match hadoop3 and remove redunant version specifications** + + +Fixed awkward dependency issue that prevented site building. + +#### note specific to HBase 2.1.4 +HBase 2.1.4 shipped with an early version of this fix that incorrectly altered the libraries included in our binary assembly for using Apache Hadoop 2.7 (the current build default Hadoop version for 2.1.z). For folks running out of the box against a Hadoop 2.7 cluster (or folks who skip the installation step of [replacing the bundled Hadoop libraries](http://hbase.apache.org/book.html#hadoop)) this will result in a failure at Region Server startup due to a missing class definition. e.g.: +``` +2019-03-27 09:02:05,779 ERROR [main] regionserver.HRegionServer: Failed construction RegionServer +java.lang.NoClassDefFoundError: org/apache/htrace/SamplerBuilder + at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:644) + at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:628) + at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149) + at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2667) + at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:93) + at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2701) + at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2683) + at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:372) + at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:171) + at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:356) + at org.apache.hadoop.fs.Path.getFileSystem(Path.java:295) + at org.apache.hadoop.hbase.util.CommonFSUtils.getRootDir(CommonFSUtils.java:362) + at org.apache.hadoop.hbase.util.CommonFSUtils.isValidWALRootDir(CommonFSUtils.java:411) + at org.apache.hadoop.hbase.util.CommonFSUtils.getWALRootDir(CommonFSUtils.java:387) + at org.apache.hadoop.hbase.regionserver.HRegionServer.initializeFileSystem(HRegionServer.java:704) + at org.apache.hadoop.hbase.regionserver.HRegionServer.(HRegionServer.java:613) + at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) + at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) + at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) + at java.lang.reflect.Constructor.newInstance(Constructor.java:423) + at org.apache.hadoop.hbase.regionserver.HRegionServer.constructRegionServer(HRegionServer.java:3029) + at org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.start(HRegionServerCommandLine.java:63) + at org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine.run(HRegionServerCommandLine.java:87) + at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) + at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:149) + at org.apache.hadoop.hbase.regionserver.HRegionServer.main(HRegionServer.java:3047) +Caused by: java.lang.ClassNotFoundException: org.apache.htrace.SamplerBuilder + at java.net.URLClassLoader.findClass(URLClassLoader.java:381) + at java.lang.ClassLoader.loadClass(ClassLoader.java:424) + at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) + at java.lang.ClassLoader.loadClass(ClassLoader.java:357) + ... 26 more + +``` + +Workaround via any _one_ of the following: +* If you are running against a Hadoop cluster that is 2.8+, ensure you replace the Hadoop libaries in the default binary assembly with those for your version. +* If you are running against a Hadoop cluster that is 2.8+, build the binary assembly from the source release while specifying your Hadoop version. +* If you are running against a Hadoop cluster that is a supported 2.7 release, ensure the `hadoop` executable is in the `PATH` seen at Region Server startup and that you are not using the `HBASE_DISABLE_HADOOP_CLASSPATH_LOOKUP` bypass. +* For any supported Hadoop version, manually make the Apache HTrace artifact `htrace-core-3.1.0-incubating.jar` available to all Region Servers via the HBASE_CLASSPATH environment variable. +* For any supported Hadoop version, manually make the Apache HTrace artifact `htrace-core-3.1.0-incubating.jar` available to all Region Servers by copying it into the directory `${HBASE_HOME}/lib/client-facing-thirdparty/`. + + +--- + +* [HBASE-22065](https://issues.apache.org/jira/browse/HBASE-22065) | *Major* | **Add listTableDescriptors(List\) method in AsyncAdmin** + +Add a listTableDescriptors(List\) method in the AsyncAdmin interface, to align with the Admin interface. + + +--- + +* [HBASE-22040](https://issues.apache.org/jira/browse/HBASE-22040) | *Major* | **Add mergeRegionsAsync with a List of region names method in AsyncAdmin** + +Add a mergeRegionsAsync(byte[][], boolean) method in the AsyncAdmin interface. + +Instead of using assert, now we will throw IllegalArgumentException when you want to merge less than 2 regions at client side. And also, at master side, instead of using assert, now we will throw DoNotRetryIOException if you want merge more than 2 regions, since we only support merging two regions at once for now. + + +--- + +* [HBASE-22039](https://issues.apache.org/jira/browse/HBASE-22039) | *Major* | **Should add the synchronous parameter for the XXXSwitch method in AsyncAdmin** + +Add drainXXX parameter for balancerSwitch/splitSwitch/mergeSwitch methods in the AsyncAdmin interface, which has the same meaning with the synchronous parameter for these methods in the Admin interface. + + +--- + +* [HBASE-21810](https://issues.apache.org/jira/browse/HBASE-21810) | *Major* | **bulkload support set hfile compression on client** + +bulkload (HFileOutputFormat2) support config the compression on client ,you can set the job configuration "hbase.mapreduce.hfileoutputformat.compression" override the auto-detection of the target table's compression + + +--- + +* [HBASE-22000](https://issues.apache.org/jira/browse/HBASE-22000) | *Major* | **Deprecated isTableAvailable with splitKeys** + +Deprecated AsyncTable.isTableAvailable(TableName, byte[][]). + + +--- + +* [HBASE-21871](https://issues.apache.org/jira/browse/HBASE-21871) | *Major* | **Support to specify a peer table name in VerifyReplication tool** + +After HBASE-21871, we can specify a peer table name with --peerTableName in VerifyReplication tool like the following: +hbase org.apache.hadoop.hbase.mapreduce.replication.VerifyReplication --peerTableName=peerTable 5 TestTable + +In addition, we can compare any 2 tables in any remote clusters with specifying both peerId and --peerTableName. + +For example: +hbase org.apache.hadoop.hbase.mapreduce.replication.VerifyReplication --peerTableName=peerTable zk1,zk2,zk3:2181/hbase TestTable + + +--- + +* [HBASE-15728](https://issues.apache.org/jira/browse/HBASE-15728) | *Major* | **Add remaining per-table region / store / flush / compaction related metrics** + +Adds below flush, split, and compaction metrics + + + // split related metrics + + private MutableFastCounter splitRequest; + + private MutableFastCounter splitSuccess; + + private MetricHistogram splitTimeHisto; + + + + // flush related metrics + + private MetricHistogram flushTimeHisto; + + private MetricHistogram flushMemstoreSizeHisto; + + private MetricHistogram flushOutputSizeHisto; + + private MutableFastCounter flushedMemstoreBytes; + + private MutableFastCounter flushedOutputBytes; + + + + // compaction related metrics + + private MetricHistogram compactionTimeHisto; + + private MetricHistogram compactionInputFileCountHisto; + + private MetricHistogram compactionInputSizeHisto; + + private MetricHistogram compactionOutputFileCountHisto; + + private MetricHistogram compactionOutputSizeHisto; + + private MutableFastCounter compactedInputBytes; + + private MutableFastCounter compactedOutputBytes; + + + + private MetricHistogram majorCompactionTimeHisto; + + private MetricHistogram majorCompactionInputFileCountHisto; + + private MetricHistogram majorCompactionInputSizeHisto; + + private MetricHistogram majorCompactionOutputFileCountHisto; + + private MetricHistogram majorCompactionOutputSizeHisto; + + private MutableFastCounter majorCompactedInputBytes; + + private MutableFastCounter majorCompactedOutputBytes; + + +--- + +* [HBASE-20886](https://issues.apache.org/jira/browse/HBASE-20886) | *Critical* | **[Auth] Support keytab login in hbase client** + +From 2.2.0, hbase supports client login via keytab. To use this feature, client should specify \`hbase.client.keytab.file\` and \`hbase.client.keytab.principal\` in hbase-site.xml, then the connection will contain the needed credentials which be renewed periodically to communicate with kerberized hbase cluster. + + +--- + +* [HBASE-21410](https://issues.apache.org/jira/browse/HBASE-21410) | *Major* | **A helper page that help find all problematic regions and procedures** + +After HBASE-21410, we add a helper page to Master UI. This helper page is mainly to help HBase operator quickly found all regions and pids that are get stuck. +There are 2 entries to get in this page. +One is showing in the Regions in Transition section, it made "num region(s) in transition" a link that you can click and check all regions in transition and their related procedure IDs. +The other one is showing in the table details section, it made the number of CLOSING or OPENING regions a link, which you can click and check regions and related procedure IDs of CLOSING or OPENING regions of a certain table. +In this helper page, not only you can see all regions and related procedures, there are 2 buttons at the top which will show these regions or procedure IDs in text format. This is mainly aim to help operator to easily copy and paste all problematic procedure IDs and encoded region names to HBCK2's command line, by which we HBase operator can bypass these procedures or assign these regions. + + +--- + +* [HBASE-21588](https://issues.apache.org/jira/browse/HBASE-21588) | *Major* | **Procedure v2 wal splitting implementation** + +After HBASE-21588, we introduce a new way to do WAL splitting coordination by procedure framework. This can simplify the process of WAL splitting and no need to connect zookeeper any more. +During ServerCrashProcedure, it will create a SplitWALProcedure for each WAL that need to split. Then each SplitWALProcedure will spawn a SplitWALRemoteProcedure to send the request to regionserver. +At the RegionServer side, whole process is handled by SplitWALCallable. It split the WAL and return the result to master. +According to my test, this patch has a better performance as the number of WALs that need to split increase. And it can relieve the pressure on zookeeper. + + +--- + +* [HBASE-20734](https://issues.apache.org/jira/browse/HBASE-20734) | *Major* | **Colocate recovered edits directory with hbase.wal.dir** + +Previously the recovered.edits directory was under the root directory. This JIRA moves the recovered.edits directory to be under the hbase.wal.dir if set. It also adds a check for any recovered.edits found under the root directory for backwards compatibility. This gives improvements when a faster media(like SSD) or more local FileSystem is used for the hbase.wal.dir than the root dir. + + +--- + +* [HBASE-20401](https://issues.apache.org/jira/browse/HBASE-20401) | *Minor* | **Make \`MAX\_WAIT\` and \`waitIfNotFinished\` in CleanerContext configurable** + +When oldwals (and hfile) cleaner cleans stale wals (and hfiles), it will periodically check and wait the clean results from filesystem, the total wait time will be no more than a max time. + +The periodically wait and check configurations are hbase.oldwals.cleaner.thread.check.interval.msec (default is 500 ms) and hbase.regionserver.hfilecleaner.thread.check.interval.msec (default is 1000 ms). + +Meanwhile, The max time configurations are hbase.oldwals.cleaner.thread.timeout.msec and hbase.regionserver.hfilecleaner.thread.timeout.msec, they are set to 60 seconds by default. + +All support dynamic configuration. + +e.g. in the oldwals cleaning scenario, one may consider tuning hbase.oldwals.cleaner.thread.timeout.msec and hbase.oldwals.cleaner.thread.check.interval.msec + +1. While deleting a oldwal never complete (strange but possible), then delete file task needs to wait for a max of 60 seconds. Here, 60 seconds might be too long, or the opposite way is to increase more than 60 seconds in the use cases of slow file delete. +2. The check and wait of a file delete is set to default in the period of 500 milliseconds, one might want to tune this checking period to a short interval to check more frequently or to a longer interval to avoid checking too often to manage their delete file task checking period (the longer interval may be use to avoid checking too fast while using a high latency storage). + + +--- + +* [HBASE-21481](https://issues.apache.org/jira/browse/HBASE-21481) | *Major* | **[acl] Superuser's permissions should not be granted or revoked by any non-su global admin** + +HBASE-21481 improves the quality of access control, by strengthening the protection of super users's privileges. + + +--- + +* [HBASE-21082](https://issues.apache.org/jira/browse/HBASE-21082) | *Critical* | **Reimplement assign/unassign related procedure metrics** + +Now we have four types of RIT procedure metrics, assign, unassign, move, reopen. The meaning of assign/unassign is changed, as we will not increase the unassign metric and then the assign metric when moving a region. +Also introduced two new procedure metrics, open and close, which are used to track the open/close region calls to region server. We may send open/close multiple times to finish a RIT since we may retry multiple times. + + +--- + +* [HBASE-20724](https://issues.apache.org/jira/browse/HBASE-20724) | *Critical* | **Sometimes some compacted storefiles are still opened after region failover** + +Problem: This is an old problem since HBASE-2231. The compaction event marker was only writed to WAL. But after flush, the WAL may be archived, which means an useful compaction event marker be deleted, too. So the compacted store files cannot be archived when region open and replay WAL. + +Solution: After this jira, the compaction event tracker will be writed to HFile. When region open and load store files, read the compaction evnet tracker from HFile and archive the compacted store files which still exist. + + +--- + +* [HBASE-21820](https://issues.apache.org/jira/browse/HBASE-21820) | *Major* | **Implement CLUSTER quota scope** + +HBase contains two quota scopes: MACHINE and CLUSTER. Before this patch, set quota operations did not expose scope option to client api and use MACHINE as default, CLUSTER scope can not be set and used. +Shell commands are as follows: +set\_quota, TYPE =\> THROTTLE, TABLE =\> 't1', LIMIT =\> '10req/sec' + +This issue implements CLUSTER scope in a simple way: For user, namespace, user over namespace quota, use [ClusterLimit / RSNum] as machine limit. For table and user over table quota, use [ClusterLimit / TotalTableRegionNum \* MachineTableRegionNum] as machine limit. +After this patch, user can set CLUSTER scope quota, but MACHINE is still default if user ignore scope. +Shell commands are as follows: +set\_quota, TYPE =\> THROTTLE, TABLE =\> 't1', LIMIT =\> '10req/sec' +set\_quota, TYPE =\> THROTTLE, TABLE =\> 't1', LIMIT =\> '10req/sec', SCOPE =\> MACHINE +set\_quota, TYPE =\> THROTTLE, TABLE =\> 't1', LIMIT =\> '10req/sec', SCOPE =\> CLUSTER + + +--- + +* [HBASE-21057](https://issues.apache.org/jira/browse/HBASE-21057) | *Minor* | **upgrade to latest spotbugs** + +Change spotbugs version to 3.1.11. + + +--- + +* [HBASE-21922](https://issues.apache.org/jira/browse/HBASE-21922) | *Major* | **BloomContext#sanityCheck may failed when use ROWPREFIX\_DELIMITED bloom filter** + +Remove bloom filter type ROWPREFIX\_DELIMITED. May add it back when find a better solution. + + +--- + +* [HBASE-21783](https://issues.apache.org/jira/browse/HBASE-21783) | *Major* | **Support exceed user/table/ns throttle quota if region server has available quota** + +Support enable or disable exceed throttle quota. Exceed throttle quota means, user can over consume user/namespace/table quota if region server has additional available quota because other users don't consume at the same time. +Use the following shell commands to enable/disable exceed throttle quota: enable\_exceed\_throttle\_quota +disable\_exceed\_throttle\_quota +There are two limits when enable exceed throttle quota: +1. Must set at least one read and one write region server throttle quota; +2. All region server throttle quotas must be in seconds time unit. Because once previous requests exceed their quota and consume region server quota, quota in other time units may be refilled in a long time, this may affect later requests. + + +--- + +* [HBASE-20587](https://issues.apache.org/jira/browse/HBASE-20587) | *Major* | **Replace Jackson with shaded thirdparty gson** + +Remove jackson dependencies from most hbase modules except hbase-rest, use shaded gson instead. The output json will be a bit different since jackson can use getter/setter, but gson will always use the fields. + + +--- + +* [HBASE-21928](https://issues.apache.org/jira/browse/HBASE-21928) | *Major* | **Deprecated HConstants.META\_QOS** + +Mark HConstants.META\_QOS as deprecated. It is for internal use only, which is the highest priority. You should not try to set a priority greater than or equal to this value, although it is no harm but also useless. + + +--- + +* [HBASE-17942](https://issues.apache.org/jira/browse/HBASE-17942) | *Major* | **Disable region splits and merges per table** + +This patch adds the ability to disable split and/or merge for a table (By default, split and merge are enabled for a table). + + +--- + +* [HBASE-21636](https://issues.apache.org/jira/browse/HBASE-21636) | *Major* | **Enhance the shell scan command to support missing scanner specifications like ReadType, IsolationLevel etc.** + +Allows shell to set Scan options previously not exposed. See additions as part of the scan help by typing following hbase shell: + +hbase\> help 'scan' + + +--- + +* [HBASE-21201](https://issues.apache.org/jira/browse/HBASE-21201) | *Major* | **Support to run VerifyReplication MR tool without peerid** + +We can specify peerQuorumAddress instead of peerId in VerifyReplication tool. So it no longer requires peerId to be setup when using this tool. + +For example: +hbase org.apache.hadoop.hbase.mapreduce.replication.VerifyReplication zk1,zk2,zk3:2181/hbase testTable + + +--- + +* [HBASE-21838](https://issues.apache.org/jira/browse/HBASE-21838) | *Major* | **Create a special ReplicationEndpoint just for verifying the WAL entries are fine** + +Introduce a VerifyWALEntriesReplicationEndpoint which replicates nothing but only verifies if all the cells are valid. +It can be used to capture bugs for writing WAL, as most times we will not read the WALs again after writing it if there are no region server crashes. + + +--- + +* [HBASE-21727](https://issues.apache.org/jira/browse/HBASE-21727) | *Minor* | **Simplify documentation around client timeout** + +Deprecated HBaseConfiguration#getInt(Configuration, String, String, int) method and removed it from 3.0.0 version. + + +--- + +* [HBASE-21764](https://issues.apache.org/jira/browse/HBASE-21764) | *Major* | **Size of in-memory compaction thread pool should be configurable** + +Introduced an new config key in this issue: hbase.regionserver.inmemory.compaction.pool.size. the default value would be 10. you can configure this to set the pool size of in-memory compaction pool. Note that all memstores in one region server will share the same pool, so if you have many regions in one region server, you need to set this larger to compact faster for better read performance. + + +--- + +* [HBASE-21684](https://issues.apache.org/jira/browse/HBASE-21684) | *Major* | **Throw DNRIOE when connection or rpc client is closed** + +Make StoppedRpcClientException extend DoNotRetryIOException. + + +--- + +* [HBASE-21739](https://issues.apache.org/jira/browse/HBASE-21739) | *Major* | **Move grant/revoke from regionserver to master** + +To implement user permission control in Precedure V2, move grant and revoke method from AccessController to master firstly. +Mark AccessController#grant and AccessController#revoke as deprecated and please use Admin#grant and Admin#revoke instead. + + +--- + +* [HBASE-21791](https://issues.apache.org/jira/browse/HBASE-21791) | *Blocker* | **Upgrade thrift dependency to 0.12.0** + +IMPORTANT: Due to security issues, all users who use hbase thrift should avoid using releases which do not have this fix. + +The effect releases are: +2.1.x: 2.1.2 and below +2.0.x: 2.0.4 and below +1.x: 1.4.x and below + +If you are using the effect releases above, please consider upgrading to a newer release ASAP. + + +--- + +* [HBASE-21792](https://issues.apache.org/jira/browse/HBASE-21792) | *Major* | **Mark HTableMultiplexer as deprecated and remove it in 3.0.0** + +HTableMultiplexer exposes the implementation class, and it is incomplete, so we mark it as deprecated and remove it in 3.0.0 release. + +There is no direct replacement for HTableMultiplexer, please use BufferedMutator if you want to batch mutations to a table. + + +--- + +* [HBASE-21782](https://issues.apache.org/jira/browse/HBASE-21782) | *Major* | **LoadIncrementalHFiles should not be IA.Public** + +Introduce a BulkLoadHFiles interface which is marked as IA.Public, for doing bulk load programmatically. +Introduce a BulkLoadHFilesTool which extends BulkLoadHFiles, and is marked as IA.LimitedPrivate(TOOLS), for using from command line. +The old LoadIncrementalHFiles is deprecated and will be removed in 3.0.0. + + +--- + +* [HBASE-21762](https://issues.apache.org/jira/browse/HBASE-21762) | *Major* | **Move some methods in ClusterConnection to Connection** + +Move the two getHbck method from ClusterConnection to Connection, and mark the methods as IA.LimitedPrivate(HBCK), as ClusterConnection is IA.Private and should not be depended by HBCK2. + +Add a clearRegionLocationCache method in Connection to clear the region location cache for all the tables. As in RegionLocator, most of the methods have a 'reload' parameter, which implicitly tells user that we have a region location cache, so adding a method to clear the cache is fine. + + +--- + +* [HBASE-21713](https://issues.apache.org/jira/browse/HBASE-21713) | *Major* | **Support set region server throttle quota** + +Support set region server rpc throttle quota which represents the read/write ability of region servers and throttles when region server's total requests exceeding the limit. + +Use the following shell command to set RS quota: +set\_quota TYPE =\> THROTTLE, REGIONSERVER =\> 'all', THROTTLE\_TYPE =\> WRITE, LIMIT =\> '20000req/sec' +set\_quota TYPE =\> THROTTLE, REGIONSERVER =\> 'all', LIMIT =\> NONE +"all" represents the throttle quota of all region servers and setting specified region server quota isn't supported currently. + + +--- + +* [HBASE-21689](https://issues.apache.org/jira/browse/HBASE-21689) | *Minor* | **Make table/namespace specific current quota info available in shell(describe\_namespace & describe)** + +In shell commands "describe\_namespace" and "describe", which are used to see the descriptors of the namespaces and tables respectively, quotas set on that particular namespace/table will also be printed along. + + +--- + +* [HBASE-17370](https://issues.apache.org/jira/browse/HBASE-17370) | *Major* | **Fix or provide shell scripts to drain and decommission region server** + +Adds shell support for the following: +- List decommissioned/draining region servers +- Decommission a list of region servers, optionally offload corresponding regions +- Recommission a region server, optionally load a list of passed regions + + +--- + +* [HBASE-21734](https://issues.apache.org/jira/browse/HBASE-21734) | *Major* | **Some optimization in FilterListWithOR** + +After HBASE-21620, the filterListWithOR has been a bit slow because we need to merge each sub-filter's RC , while before HBASE-21620, we will skip many RC merging, but the logic was wrong. So here we choose another way to optimaze the performance: removing the KeyValueUtil#toNewKeyCell. +Anoop Sam John suggested that the KeyValueUtil#toNewKeyCell can save some GC before because if we copy key part of cell into a single byte[], then the block the cell refering won't be refered by the filter list any more, the upper layer can GC the data block quickly. while after HBASE-21620, we will update the prevCellList for every encountered cell now, so the lifecycle of cell in prevCellList for FilterList will be quite shorter. so just use the cell ref for saving cpu. +BTW, we removed all the arrays streams usage in filter list, because it's also quite time-consuming in our test. + + +--- + +* [HBASE-21738](https://issues.apache.org/jira/browse/HBASE-21738) | *Critical* | **Remove all the CSLM#size operation in our memstore because it's an quite time consuming.** + +We found the memstore snapshotting would cost much time because of calling the time-consuming ConcurrentSkipListMap#Size, it would make the p999 latency spike happen. So in this issue, we remove all ConcurrentSkipListMap#size in memstore by counting the cellsCount in MemstoreSizeing. As the issue described, the p999 latency spike was mitigated. + + +--- + +* [HBASE-21034](https://issues.apache.org/jira/browse/HBASE-21034) | *Major* | **Add new throttle type: read/write capacity unit** + +Provides a new throttle type: capacity unit. One read/write/request capacity unit represents that read/write/read+write up to 1K data. If data size is more than 1K, then consume additional capacity units. + +Use shell command to set capacity unit(CU): +set\_quota TYPE =\> THROTTLE, THROTTLE\_TYPE =\> WRITE, USER =\> 'u1', LIMIT =\> '10CU/sec' + +Use the "hbase.quota.read.capacity.unit" property to set the data size of one read capacity unit in bytes, the default value is 1K. Use the "hbase.quota.write.capacity.unit" property to set the data size of one write capacity unit in bytes, the default value is 1K. + + +--- + +* [HBASE-21595](https://issues.apache.org/jira/browse/HBASE-21595) | *Minor* | **Print thread's information and stack traces when RS is aborting forcibly** + +Does thread dump on stdout on abort. + + +--- + +* [HBASE-21732](https://issues.apache.org/jira/browse/HBASE-21732) | *Critical* | **Should call toUpperCase before using Enum.valueOf in some methods for ColumnFamilyDescriptor** + +Now all the Enum configs in ColumnFamilyDescriptor can accept lower case config value. + + +--- + +* [HBASE-21712](https://issues.apache.org/jira/browse/HBASE-21712) | *Minor* | **Make submit-patch.py python3 compatible** + +Python3 support was added to dev-support/submit-patch.py. To install newly required dependencies run \`pip install -r dev-support/python-requirements.txt\` command. + + +--- + +* [HBASE-21657](https://issues.apache.org/jira/browse/HBASE-21657) | *Major* | **PrivateCellUtil#estimatedSerializedSizeOf has been the bottleneck in 100% scan case.** + +In HBASE-21657, I simplified the path of estimatedSerialiedSize() & estimatedSerialiedSizeOfCell() by moving the general getSerializedSize() +and heapSize() from ExtendedCell to Cell interface. The patch also included some other improvments: + +1. For 99% of case, our cells has no tags, so let the HFileScannerImpl just return the NoTagsByteBufferKeyValue if no tags, which means we can save + lots of cpu time when sending no tags cell to rpc because can just return the length instead of getting the serialize size by caculating offset/length + of each fields(row/cf/cq..) +2. Move the subclass's getSerializedSize implementation from ExtendedCell to their own class, which mean we did not need to call ExtendedCell's + getSerialiedSize() firstly, then forward to subclass's getSerializedSize(withTags). +3. Give a estimated result arraylist size for avoiding the frequent list extension when in a big scan, now we estimate the array size as min(scan.rows, 512). + it's also help a lot. + +We gain almost ~40% throughput improvement in 100% scan case for branch-2 (cacheHitRatio~100%)[1], it's a good thing. While it's a incompatible change in +some case, such as if the upstream user implemented their own Cells, although it's rare but can happen, then their compile will be error. + + +--- + +* [HBASE-21647](https://issues.apache.org/jira/browse/HBASE-21647) | *Major* | **Add status track for splitting WAL tasks** + +Adds task monitor that shows ServerCrashProcedure progress in UI. + + +--- + +* [HBASE-21652](https://issues.apache.org/jira/browse/HBASE-21652) | *Major* | **Refactor ThriftServer making thrift2 server inherited from thrift1 server** + +Before this issue, thrift1 server and thrift2 server are totally different servers. If a new feature is added to thrift1 server, thrfit2 server have to make the same change to support it(e.g. authorization). After this issue, thrift2 server is inherited from thrift1, thrift2 server now have all the features thrift1 server has(e.g http support, which thrift2 server doesn't have before). The way to start thrift1 or thrift2 server remain the same after this issue. + + +--- + +* [HBASE-21661](https://issues.apache.org/jira/browse/HBASE-21661) | *Major* | **Provide Thrift2 implementation of Table/Admin** + +ThriftAdmin/ThriftTable are implemented based on Thrift2. With ThriftAdmin/ThriftTable, People can use thrift2 protocol just like HTable/HBaseAdmin. +Example of using ThriftConnection +Configuration conf = HBaseConfiguration.create(); +conf.set(ClusterConnection.HBASE\_CLIENT\_CONNECTION\_IMPL,ThriftConnection.class.getName()); +Connection conn = ConnectionFactory.createConnection(conf); +Table table = conn.getTable(tablename) +It is just like a normal Connection, similar use experience with the default ConnectionImplementation + + +--- + +* [HBASE-21618](https://issues.apache.org/jira/browse/HBASE-21618) | *Critical* | **Scan with the same startRow(inclusive=true) and stopRow(inclusive=false) returns one result** + +There was a bug when scan with the same startRow(inclusive=true) and stopRow(inclusive=false). The old incorrect behavior is return one result. After this fix, the new correct behavior is return nothing. + + +--- + +* [HBASE-21159](https://issues.apache.org/jira/browse/HBASE-21159) | *Major* | **Add shell command to switch throttle on or off** + +Support enable or disable rpc throttle when hbase quota is enabled. If hbase quota is enabled, rpc throttle is enabled by default. When disable rpc throttle, HBase will not throttle any request. Use the following commands to switch rpc throttle : enable\_rpc\_throttle / disable\_rpc\_throttle. + + +--- + +* [HBASE-21659](https://issues.apache.org/jira/browse/HBASE-21659) | *Minor* | **Avoid to load duplicate coprocessors in system config and table descriptor** + +Add a new configuration "hbase.skip.load.duplicate.table.coprocessor". The default value is false to keep compatible with the old behavior. Config it true to skip load duplicate table coprocessor. + + +--- + +* [HBASE-21650](https://issues.apache.org/jira/browse/HBASE-21650) | *Major* | **Add DDL operation and some other miscellaneous to thrift2** + +Added DDL operations and some other structure definition to thrift2. Methods added: +create/modify/addColumnFamily/deleteColumnFamily/modifyColumnFamily/enable/disable/truncate/delete table +create/modify/delete namespace +get(list)TableDescriptor(s)/get(list)NamespaceDescirptor(s) +tableExists/isTableEnabled/isTableDisabled/isTableAvailabe +And some class definitions along with those methods + + +--- + +* [HBASE-21643](https://issues.apache.org/jira/browse/HBASE-21643) | *Major* | **Introduce two new region coprocessor method and deprecated postMutationBeforeWAL** + +Deprecated region coprocessor postMutationBeforeWAL and introduce two new region coprocessor postIncrementBeforeWAL and postAppendBeforeWAL instead. + + +--- + +* [HBASE-21635](https://issues.apache.org/jira/browse/HBASE-21635) | *Major* | **Use maven enforcer to ban imports from illegal packages** + +Use de.skuzzle.enforcer.restrict-imports-enforcer-rule extension for maven enforcer plugin to ban illegal imports at compile time. Now if you use illegal imports, for example, import com.google.common.\*, there will be a compile error, instead of a checkstyle warning. + + +--- + +* [HBASE-21401](https://issues.apache.org/jira/browse/HBASE-21401) | *Critical* | **Sanity check when constructing the KeyValue** + +Add a sanity check when constructing KeyValue from a byte[]. we use the constructor when we're reading kv from socket or HFIle or WAL(replication). the santiy check isn't designed for discovering the bits corruption in network transferring or disk IO. It is designed to detect bugs inside HBase in advance. and HBASE-21459 indicated that there's extremely small performance loss for diff kinds of keyvalue. + + +--- + +* [HBASE-21554](https://issues.apache.org/jira/browse/HBASE-21554) | *Minor* | **Show replication endpoint classname for replication peer on master web UI** + +The replication UI on master will show the replication endpoint classname. + + +--- + +* [HBASE-21549](https://issues.apache.org/jira/browse/HBASE-21549) | *Major* | **Add shell command for serial replication peer** + +Add a SERIAL flag for add\_peer command to identifiy whether or not the replication peer is a serial replication peer. The default serial flag is false. + + +--- + +* [HBASE-21453](https://issues.apache.org/jira/browse/HBASE-21453) | *Major* | **Convert ReadOnlyZKClient to DEBUG instead of INFO** + +Log level of ReadOnlyZKClient moved to debug. + + +--- + +* [HBASE-21283](https://issues.apache.org/jira/browse/HBASE-21283) | *Minor* | **Add new shell command 'rit' for listing regions in transition** + + + +The HBase `shell` now includes a command to list regions currently in transition. + +``` +HBase Shell +Use "help" to get list of supported commands. +Use "exit" to quit this interactive shell. +Version 1.5.0-SNAPSHOT, r9bb6d2fa8b760f16cd046657240ebd4ad91cb6de, Mon Oct 8 21:05:50 UTC 2018 + +hbase(main):001:0> help 'rit' +List all regions in transition. +Examples: + hbase> rit + +hbase(main):002:0> create ... +0 row(s) in 2.5150 seconds +=> Hbase::Table - IntegrationTestBigLinkedList + +hbase(main):003:0> rit +0 row(s) in 0.0340 seconds + +hbase(main):004:0> unassign '56f0c38c81ae453d19906ce156a2d6a1' +0 row(s) in 0.0540 seconds + +hbase(main):005:0> rit +IntegrationTestBigLinkedList,L\xCC\xCC\xCC\xCC\xCC\xCC\xCB,1539117183224.56f0c38c81ae453d19906ce156a2d6a1. state=PENDING_CLOSE, ts=Tue Oct 09 20:33:34 UTC 2018 (0s ago), server=null +1 row(s) in 0.0170 seconds +``` + + +--- + +* [HBASE-21567](https://issues.apache.org/jira/browse/HBASE-21567) | *Major* | **Allow overriding configs starting up the shell** + +Allow passing of -Dkey=value option to shell to override hbase-\* configuration: e.g.: + +$ ./bin/hbase shell -Dhbase.zookeeper.quorum=ZK0.remote.cluster.example.org,ZK1.remote.cluster.example.org,ZK2.remote.cluster.example.org -Draining=false +... +hbase(main):001:0\> @shell.hbase.configuration.get("hbase.zookeeper.quorum") +=\> "ZK0.remote.cluster.example.org,ZK1.remote.cluster.example.org,ZK2.remote.cluster.example.org" +hbase(main):002:0\> @shell.hbase.configuration.get("raining") +=\> "false" + + +--- + +* [HBASE-21560](https://issues.apache.org/jira/browse/HBASE-21560) | *Major* | **Return a new TableDescriptor for MasterObserver#preModifyTable to allow coprocessor modify the TableDescriptor** + +Incompatible change. Allow MasterObserver#preModifyTable to return a new TableDescriptor. And master will use this returned TableDescriptor to modify table. + + +--- + +* [HBASE-21551](https://issues.apache.org/jira/browse/HBASE-21551) | *Blocker* | **Memory leak when use scan with STREAM at server side** + + +### Summary +HBase clusters will experience Region Server failures due to out of memory errors due to a leak given any of the following: + +* User initiates Scan operations set to use the STREAM reading type +* User initiates Scan operations set to use the default reading type that read more than 4 * the block size of column families involved in the scan (e.g. by default 4*64KiB) +* Compactions run + +### Root cause + +When there are long running scans the Region Server process attempts to optimize access by using a different API geared towards sequential access. Due to an error in HBASE-20704 for HBase 2.0+ the Region Server fails to release related resources when those scans finish. That same optimization path is always used for the HBase internal file compaction process. + +### Workaround + +Impact for this error can be minimized by setting the config value “hbase.storescanner.pread.max.bytes” to MAX_INT to avoid the optimization for default user scans. Clients should also be checked to ensure they do not pass the STREAM read type to the Scan API. This will have a severe impact on performance for long scans. + +Compactions always use this sequential optimized reading mechanism so downstream users will need to periodically restart Region Server roles after compactions have happened. + + +--- + +* [HBASE-21550](https://issues.apache.org/jira/browse/HBASE-21550) | *Major* | **Add a new method preCreateTableRegionInfos for MasterObserver which allows CPs to modify the TableDescriptor** + +Add a new method preCreateTableRegionInfos for MasterObserver, which will be called before creating region infos for the given table, before the preCreateTable method. It allows you to return a new TableDescritor to override the original one. Returns null or throws exception will stop the creation. + + +--- + +* [HBASE-21492](https://issues.apache.org/jira/browse/HBASE-21492) | *Critical* | **CellCodec Written To WAL Before It's Verified** + +After HBASE-21492 the return type of WALCellCodec#getWALCellCodecClass has been changed from String to Class + + +--- + +* [HBASE-21387](https://issues.apache.org/jira/browse/HBASE-21387) | *Major* | **Race condition surrounding in progress snapshot handling in snapshot cache leads to loss of snapshot files** + +To prevent race condition between in progress snapshot (performed by TakeSnapshotHandler) and HFileCleaner which results in data loss, this JIRA introduced mutual exclusion between taking snapshot and running HFileCleaner. That is, at any given moment, either some snapshot can be taken or, HFileCleaner checks hfiles which are not referenced, but not both can be running. + + +--- + +* [HBASE-21452](https://issues.apache.org/jira/browse/HBASE-21452) | *Major* | **Illegal character in hbase counters group name** + +Changes group name of hbase metrics from "HBase Counters" to "HBaseCounters". + + +--- + +* [HBASE-21443](https://issues.apache.org/jira/browse/HBASE-21443) | *Major* | **[hbase-connectors] Purge hbase-\* modules from core now they've been moved to hbase-connectors** + +Parent issue moved hbase-spark\* modules to hbase-connectors. This issue removes hbase-spark\* modules from hbase core repo. + + +--- + +* [HBASE-21430](https://issues.apache.org/jira/browse/HBASE-21430) | *Major* | **[hbase-connectors] Move hbase-spark\* modules to hbase-connectors repo** + +hbase-spark\* modules have been cloned to https://github.com/apache/hbase-connectors All spark connector dev is to happen in that repo from here on out. + +Let me file a subtask to remove hbase-spark\* modules from hbase core. + + +--- + +* [HBASE-21417](https://issues.apache.org/jira/browse/HBASE-21417) | *Critical* | **Pre commit build is broken due to surefire plugin crashes** + +Add -Djdk.net.URLClassPath.disableClassPathURLCheck=true when executing surefire plugin. + + +--- + +* [HBASE-21191](https://issues.apache.org/jira/browse/HBASE-21191) | *Major* | **Add a holding-pattern if no assign for meta or namespace (Can happen if masterprocwals have been cleared).** + +Puts master startup into holding pattern if meta is not assigned (previous it would exit). To make progress again, operator needs to inject an assign (Caveats and instruction can be found in HBASE-21035). + + +--- + +* [HBASE-21322](https://issues.apache.org/jira/browse/HBASE-21322) | *Critical* | **Add a scheduleServerCrashProcedure() API to HbckService** + +Adds scheduleServerCrashProcedure to the HbckService. + + +--- + +* [HBASE-21325](https://issues.apache.org/jira/browse/HBASE-21325) | *Major* | **Force to terminate regionserver when abort hang in somewhere** + +Add two new config hbase.regionserver.abort.timeout and hbase.regionserver.abort.timeout.task. If regionserver abort timeout, it will schedule an abort timeout task to run. The default abort task is SystemExitWhenAbortTimeout, which will force to terminate region server when abort timeout. And you can config a special abort timeout task by hbase.regionserver.abort.timeout.task. + + +--- + +* [HBASE-21215](https://issues.apache.org/jira/browse/HBASE-21215) | *Major* | **Figure how to invoke hbck2; make it easy to find** + +Adds to bin/hbase means of invoking hbck2. Pass the new '-j' option on the 'hbck' command with a value of the full path to the HBCK2.jar. + +E.g: + +$ ./bin/hbase hbck -j ~/checkouts/hbase-operator-tools/hbase-hbck2/target/hbase-hbck2-1.0.0-SNAPSHOT.jar setTableState x ENABLED + + +--- + +* [HBASE-21372](https://issues.apache.org/jira/browse/HBASE-21372) | *Major* | **Set hbase.assignment.maximum.attempts to Long.MAX** + +Retry assigns 'forever' (or until an intervention such as a ServerCrashProcedure). + +Previous retry was a maximum of ten times but on failure, handling was an indeterminate. + + +--- + +* [HBASE-21338](https://issues.apache.org/jira/browse/HBASE-21338) | *Major* | **[balancer] If balancer is an ill-fit for cluster size, it gives little indication** + +The description claims the balancer not dynamically configurable but this is an error; it is http://hbase.apache.org/book.html#dyn\_config + +Also, if balancer is seen to be cutting out too soon, try setting "hbase.master.balancer.stochastic.runMaxSteps" to true. + +Adds cleaner logging around balancer start. + + +--- + +* [HBASE-21073](https://issues.apache.org/jira/browse/HBASE-21073) | *Major* | **"Maintenance mode" master** + + Instead of being an ephemeral state set by hbck, maintenance mode is now + an explicit toggle set by either configuration property or environment + variable. In maintenance mode, master will host system tables and not + assign any user-space tables to RSs. This gives operators the ability to + affect repairs to meta table with fewer moving parts. + + +--- + +* [HBASE-21335](https://issues.apache.org/jira/browse/HBASE-21335) | *Critical* | **Change the default wait time of HBCK2 tool** + +Changed waitTime parameter to lockWait on bypass. Changed default waitTime from 0 -- i.e. wait for ever -- to 1ms so if lock is held, we'll go past it and if override enforce bypass. + + +--- + +* [HBASE-21291](https://issues.apache.org/jira/browse/HBASE-21291) | *Major* | **Add a test for bypassing stuck state-machine procedures** + +bypass will now throw an Exception if passed a lockWait \<= 0; i.e bypass will prevent an operator getting stuck on an entity lock waiting forever (lockWait == 0) + + +--- + +* [HBASE-21320](https://issues.apache.org/jira/browse/HBASE-21320) | *Major* | **[canary] Cleanup of usage and add commentary** + +Cleans up usage and docs around Canary. Does not change command-line args (though we should -- smile). + + +--- + +* [HBASE-21278](https://issues.apache.org/jira/browse/HBASE-21278) | *Critical* | **Do not rollback successful sub procedures when rolling back a procedure** + +For the sub procedures which are successfully finished, do not do rollback. This is a change in rollback behavior. + +State changes which are done by sub procedures should be handled by parent procedures when rolling back. For example, when rolling back a MergeTableProcedure, we will schedule new procedures to bring the offline regions online instead of rolling back the original procedures which off-lined the regions (in fact these procedures can not be rolled back...). + + +--- + +* [HBASE-21158](https://issues.apache.org/jira/browse/HBASE-21158) | *Critical* | **Empty qualifier cell should not be returned if it does not match QualifierFilter** + + + +Scans that make use of `QualifierFilter` previously would erroneously return both columns with an empty qualifier along with those that matched. After this change that behavior has changed to only return those columns that match. + + +--- + +* [HBASE-21098](https://issues.apache.org/jira/browse/HBASE-21098) | *Major* | **Improve Snapshot Performance with Temporary Snapshot Directory when rootDir on S3** + +It is recommended to place the working directory on-cluster on HDFS as doing so has shown a strong performance increase due to data locality. It is important to note that the working directory should not overlap with any existing directories as the working directory will be cleaned out during the snapshot process. Beyond that, any well-named directory on HDFS should be sufficient. + + +--- + +* [HBASE-21185](https://issues.apache.org/jira/browse/HBASE-21185) | *Minor* | **WALPrettyPrinter: Additional useful info to be printed by wal printer tool, for debugability purposes** + +This adds two extra features to WALPrettyPrinter tool: + +1) Output for each cell combined size of cell descriptors, plus the cell value itself, in a given WAL edit. This is printed on the results as "cell total size sum:" info by default; + +2) An optional -g/--goto argument, that allows to seek straight to that specific WAL file position, then sequentially reading the WAL from that point towards its end; + + +--- + +* [HBASE-21287](https://issues.apache.org/jira/browse/HBASE-21287) | *Major* | **JVMClusterUtil Master initialization wait time not configurable** + +Local HBase cluster (as used by unit tests) wait times on startup and initialization can be configured via \`hbase.master.start.timeout.localHBaseCluster\` and \`hbase.master.init.timeout.localHBaseCluster\` + + +--- + +* [HBASE-21280](https://issues.apache.org/jira/browse/HBASE-21280) | *Trivial* | **Add anchors for each heading in UI** + +Adds anchors #tables, #tasks, etc. + + +--- + +* [HBASE-21232](https://issues.apache.org/jira/browse/HBASE-21232) | *Major* | **Show table state in Tables view on Master home page** + +Add table state column to the tables panel + + +--- + +* [HBASE-21223](https://issues.apache.org/jira/browse/HBASE-21223) | *Critical* | **[amv2] Remove abort\_procedure from shell** + +Removed the abort\_procedure command from shell -- dangerous -- and deprecated abortProcedure in Admin API. + + +--- + +* [HBASE-20636](https://issues.apache.org/jira/browse/HBASE-20636) | *Major* | **Introduce two bloom filter type : ROWPREFIX\_FIXED\_LENGTH and ROWPREFIX\_DELIMITED** + +Add two bloom filter type : ROWPREFIX\_FIXED\_LENGTH and ROWPREFIX\_DELIMITED +1. ROWPREFIX\_FIXED\_LENGTH: specify the length of the prefix +2. ROWPREFIX\_DELIMITED: specify the delimiter of the prefix +Need to specify parameters for these two types of bloomfilter, otherwise the table will fail to create +Example: +create 't1', {NAME =\> 'f1', BLOOMFILTER =\> 'ROWPREFIX\_FIXED\_LENGTH', CONFIGURATION =\> {'RowPrefixBloomFilter.prefix\_length' =\> '10'}} +create 't1', {NAME =\> 'f1', BLOOMFILTER =\> 'ROWPREFIX\_DELIMITED', CONFIGURATION =\> {'RowPrefixDelimitedBloomFilter.delimiter' =\> '#'}} + + +--- + +* [HBASE-21156](https://issues.apache.org/jira/browse/HBASE-21156) | *Critical* | **[hbck2] Queue an assign of hbase:meta and bulk assign/unassign** + +Adds 'raw' assigns/unassigns to the Hbck Service. Takes a list of encoded region names and bulk assigns/unassigns. Skirts Master 'state' check and does not invoke Coprocessors. For repair only. + +Here is what HBCK2 usage looks like now: + +{code} +$ java -cp hbase-hbck2-1.0.0-SNAPSHOT.jar org.apache.hbase.HBCK2 +usage: HBCK2 \ COMMAND [\] + +Options: + -d,--debug run with debug output + -h,--help output this help message + --hbase.zookeeper.peerport peerport of target hbase ensemble + --hbase.zookeeper.quorum ensemble of target hbase + --zookeeper.znode.parent parent znode of target hbase + +Commands: + setTableState \ \ + Possible table states: ENABLED, DISABLED, DISABLING, ENABLING + To read current table state, in the hbase shell run: + hbase\> get 'hbase:meta', '\', 'table:state' + A value of \\x08\\x00 == ENABLED, \\x08\\x01 == DISABLED, etc. + An example making table name 'user' ENABLED: + $ HBCK2 setTableState users ENABLED + Returns whatever the previous table state was. + + assign \ ... + A 'raw' assign that can be used even during Master initialization. + Skirts Coprocessors. Pass one or more encoded RegionNames: + e.g. 1588230740 is hard-coded encoding for hbase:meta region and + de00010733901a05f5a2a3a382e27dd4 is an example of what a random + user-space encoded Region name looks like. For example: + $ HBCK2 assign 1588230740 de00010733901a05f5a2a3a382e27dd4 + Returns the pid of the created AssignProcedure or -1 if none. + + unassign \ ... + A 'raw' unassign that can be used even during Master initialization. + Skirts Coprocessors. Pass one or more encoded RegionNames: + Skirts Coprocessors. Pass one or more encoded RegionNames: + de00010733901a05f5a2a3a382e27dd4 is an example of what a random + user-space encoded Region name looks like. For example: + $ HBCK2 unassign 1588230740 de00010733901a05f5a2a3a382e27dd4 + Returns the pid of the created UnassignProcedure or -1 if none. +{code} + + +--- + +* [HBASE-21021](https://issues.apache.org/jira/browse/HBASE-21021) | *Major* | **Result returned by Append operation should be ordered** + +This change ensures Append operations are assembled into the expected order. + + +--- + +* [HBASE-21171](https://issues.apache.org/jira/browse/HBASE-21171) | *Major* | **[amv2] Tool to parse a directory of MasterProcWALs standalone** + +Make it so can run the WAL parse and load system in isolation. Here is an example: + +{code}$ HBASE\_OPTS=" -XX:+UnlockDiagnosticVMOptions -XX:+UnlockCommercialFeatures -XX:+FlightRecorder -XX:+DebugNonSafepoints" ./bin/hbase org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureStore ~/big\_set\_of\_masterprocwals/ +{code} + + +--- + +* [HBASE-21107](https://issues.apache.org/jira/browse/HBASE-21107) | *Minor* | **add a metrics for netty direct memory** + +Add a new nettyDirectMemoryUsage under server's ipc metrics to show direct memory usage for netty rpc server. + + +--- + +* [HBASE-21153](https://issues.apache.org/jira/browse/HBASE-21153) | *Major* | **Shaded client jars should always build in relevant phase to avoid confusion** + +Client facing artifacts are now built whenever Maven is run through the "package" goal. Previously, the client facing artifacts would create placeholder jars that skipped repackaging HBase and third-party dependencies unless the "release" profile was active. + +Build times may be noticeably longer depending on your build hardware. For example, the Jenkins worker nodes maintained by ASF Infra take ~14% longer to do a full packaging build. An example portability-focused personal laptop took ~25% longer. + + +--- + +* [HBASE-20942](https://issues.apache.org/jira/browse/HBASE-20942) | *Major* | **Improve RpcServer TRACE logging** + +Allows configuration of the length of RPC messages printed to the log at TRACE level via "hbase.ipc.trace.param.size" in RpcServer. + + +--- + +* [HBASE-20649](https://issues.apache.org/jira/browse/HBASE-20649) | *Minor* | **Validate HFiles do not have PREFIX\_TREE DataBlockEncoding** + + +Users who have previously made use of prefix tree encoding can now check that their existing HFiles no longer contain data that uses it with an additional preupgrade check command. + +``` +hbase pre-upgrade validate-hfile +``` + +Please see the "HFile Content validation" section of the ref guide's coverage of the pre-upgrade validator tool for usage details. + + +--- + +* [HBASE-20941](https://issues.apache.org/jira/browse/HBASE-20941) | *Major* | **Create and implement HbckService in master** + +Adds an HBCK Service and a first method to force-change-in-table-state for use by an HBCK client effecting 'repair' to a malfunctioning HBase. + + +--- + +* [HBASE-21071](https://issues.apache.org/jira/browse/HBASE-21071) | *Major* | **HBaseTestingUtility::startMiniCluster() to use builder pattern** + +Cleanup all the cluster start override combos in HBaseTestingUtility by adding a StartMiniClusterOption and Builder. + + +--- + +* [HBASE-21072](https://issues.apache.org/jira/browse/HBASE-21072) | *Major* | **Block out HBCK1 in hbase2** + +Fence out hbase-1.x hbck1 instances. Stop them making state changes on an hbase-2.x cluster; they could do damage. We do this by writing the hbck1 lock file into place on hbase-2.x Master start-up. + +To disable this new behavior, set hbase.write.hbck1.lock.file to false + + +--- + +* [HBASE-20881](https://issues.apache.org/jira/browse/HBASE-20881) | *Major* | **Introduce a region transition procedure to handle all the state transition for a region** + +Introduced a new TransitRegionStateProcedure to replace the old AssignProcedure/UnassignProcedure/MoveRegionProcedure. In the old code, MRP will not be attached to RegionStateNode, so it can not be interrupted by ServerCrashProcedure, which introduces lots of tricky code to deal with races, and also causes lots of other difficulties on how to prevent scheduling redundant or even conflict procedures for a region. + +And now TRSP is the only one procedure which can bring region online or offline. When you want to schedule one, you need to check whether there is already one attached to the RegionStateNode, under the lock of the RegionStateNode. If not just go ahead, and if there is one, then you should do something, for example, give up and fail directly, or tell the TRSP to give up(This is what SCP does). Since the check and attach are both under the lock of RSN, it will greatly reduce the possible races, and make the code much simpler. + + +--- + +* [HBASE-21012](https://issues.apache.org/jira/browse/HBASE-21012) | *Critical* | **Revert the change of serializing TimeRangeTracker** + +HFiles generated by 2.0.0, 2.0.1, 2.1.0 are not forward compatible to 1.4.6-, 1.3.2.1-, 1.2.6.1-, and other inactive releases. Why HFile lose compatability is hbase in new versions (2.0.0, 2.0.1, 2.1.0) use protobuf to serialize/deserialize TimeRangeTracker (TRT) while old versions use DataInput/DataOutput. To solve this, We have to put HBASE-21012 to 2.x and put HBASE-21013 in 1.x. For more information, please check HBASE-21008. + + +--- + +* [HBASE-20965](https://issues.apache.org/jira/browse/HBASE-20965) | *Major* | **Separate region server report requests to new handlers** + +After HBASE-20965, we can use MasterFifoRpcScheduler in master to separate RegionServerReport requests to indenpedent handler. To use this feature, please set "hbase.master.rpc.scheduler.factory.class" to + "org.apache.hadoop.hbase.ipc.MasterFifoRpcScheduler". Use "hbase.master.server.report.handler.count" to set RegionServerReport handlers count, the default value is half of "hbase.regionserver.handler.count" value, but at least 1, and the other handlers count in master is "hbase.regionserver.handler.count" value minus RegionServerReport handlers count, but at least 1 too. + + +--- + +* [HBASE-20813](https://issues.apache.org/jira/browse/HBASE-20813) | *Minor* | **Remove RPC quotas when the associated table/Namespace is dropped off** + +In previous releases, when a Space Quota was configured on a table or namespace and that table or namespace was deleted, the Space Quota was also deleted. This change improves the implementation so that the same is also done for RPC Quotas. + + +--- + +* [HBASE-20986](https://issues.apache.org/jira/browse/HBASE-20986) | *Major* | **Separate the config of block size when we do log splitting and write Hlog** + +After HBASE-20986, we can set different value to block size of WAL and recovered edits. Both of their default value is 2 \* default HDFS blocksize. And hbase.regionserver.recoverededits.blocksize is for block size of recovered edits while hbase.regionserver.hlog.blocksize is for block size of WAL. + + +--- + +* [HBASE-20856](https://issues.apache.org/jira/browse/HBASE-20856) | *Minor* | **PITA having to set WAL provider in two places** + +With this change if a WAL's meta provider (hbase.wal.meta\_provider) is not explicitly set, it now defaults to whatever hbase.wal.provider is set to. Previous, the two settings operated independently, each with its own default. + +This change is operationally incompatible with previous HBase versions because the default WAL meta provider no longer defaults to AsyncFSWALProvider but to hbase.wal.provider. + +The thought is that this is more in line with an operator's expectation, that a change in hbase.wal.provider is sufficient to change how WALs are written, especially given hbase.wal.meta\_provider is an obscure configuration and that the very idea that meta regions would have their own wal provider would likely come as a surprise. + + +--- + +* [HBASE-20538](https://issues.apache.org/jira/browse/HBASE-20538) | *Critical* | **Upgrade our hadoop versions to 2.7.7 and 3.0.3** + +Update hadoop-two.version to 2.7.7 and hadoop-three.version to 3.0.3 due to a JDK issue which is solved by HADOOP-15473. + + +--- + +* [HBASE-20846](https://issues.apache.org/jira/browse/HBASE-20846) | *Major* | **Restore procedure locks when master restarts** + +1. Make hasLock method final, and add a locked field in Procedure to record whether we have the lock. We will set it to true in doAcquireLock and to false in doReleaseLock. The sub procedures do not need to manage it any more. + +2. Also added a locked field in the proto message. When storing, the field will be set according to the return value of hasLock. And when loading, there is a new field in Procedure called lockedWhenLoading. We will set it to true if the locked field in proto message is true. + +3. The reason why we can not set the locked field directly to true by calling doAcquireLock is that, during initialization, most procedures need to wait until master is initialized. So the solution here is that, we introduced a new method called waitInitialized in Procedure, and move the wait master initialized related code from acquireLock to this method. And we added a restoreLock method to Procedure, if lockedWhenLoading is true, we will call the acquireLock to get the lock, but do not set locked to true. And later when we call doAcquireLock and pass the waitInitialized check, we will test lockedWhenLoading, if it is true, when we just set the locked field to true and return, without actually calling the acquireLock method since we have already called it once. + + +--- + +* [HBASE-20672](https://issues.apache.org/jira/browse/HBASE-20672) | *Minor* | **New metrics ReadRequestRate and WriteRequestRate** + +Exposing 2 new metrics in HBase to provide ReadRequestRate and WriteRequestRate at region server level. These metrics give the rate of request handled by the region server and are reset after every monitoring interval. + + +--- + +* [HBASE-6028](https://issues.apache.org/jira/browse/HBASE-6028) | *Minor* | **Implement a cancel for in-progress compactions** + +Added a new command to the shell to switch on/off compactions called "compaction\_switch". Disabling compactions will interrupt any currently ongoing compactions. This setting will be lost on restart of the server. Added the configuration hbase.regionserver.compaction.enabled so user can enable/disable compactions via hbase-site.xml. + + +--- + +* [HBASE-20884](https://issues.apache.org/jira/browse/HBASE-20884) | *Major* | **Replace usage of our Base64 implementation with java.util.Base64** + +Class org.apache.hadoop.hbase.util.Base64 has been removed in it's entirety from HBase 2+. In HBase 1, unused methods have been removed from the class and the audience was changed from Public to Private. This class was originally intended as an internal utility class that could be used externally but thinking since changed; these classes should not have been advertised as public to end-users. + +This represents an incompatible change for users who relied on this implementation. An alternative implementation for affected clients is available at java.util.Base64 when using Java 8 or newer; be aware, it may encode/decode differently. For clients seeking to restore this specific implementation, it is available in the public domain for download at http://iharder.sourceforge.net/current/java/base64/ + + +--- + +* [HBASE-20357](https://issues.apache.org/jira/browse/HBASE-20357) | *Major* | **AccessControlClient API Enhancement** + +This enhances the AccessControlClient APIs to retrieve the permissions based on namespace, table name, family and qualifier for specific user. AccessControlClient can also validate a user whether allowed to perform specified operations on a particular table. +Following APIs have been added, +1) getUserPermissions(Connection connection, String tableRegex, byte[] columnFamily, byte[] columnQualifier, String userName) + Scope of retrieving permission will be same as existing. +2) hasPermission(onnection connection, String tableName, byte[] columnFamily, byte[] columnQualifier, String userName, Permission.Action... actions) + Scope of validating user privilege, + User can perform self check without any special privilege but ADMIN privilege will be required to perform check for other users. + For example, suppose there are two users "userA" & "userB" then there can be below scenarios, + a. When userA want to check whether userA have privilege to perform mentioned actions + userA don't need ADMIN privilege, as it's a self query. + b. When userA want to check whether userB have privilege to perform mentioned actions, + userA must have ADMIN or superuser privilege, as it's trying to query for other user. + + + +# HBASE 2.1.0 Release Notes + +These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements. + + +--- + +* [HBASE-20691](https://issues.apache.org/jira/browse/HBASE-20691) | *Blocker* | **Storage policy should allow deferring to HDFS** + +After HBASE-20691 we have changed the default setting of hbase.wal.storage.policy from "HOT" back to "NONE" which means we defer the policy to HDFS. This fixes the problem of release 2.0.0 that the storage policy of WAL directory will defer to HDFS and may not be "HOT" even if you explicitly set hbase.wal.storage.policy to "HOT" + + +--- + +* [HBASE-20839](https://issues.apache.org/jira/browse/HBASE-20839) | *Blocker* | **Fallback to FSHLog if we can not instantiated AsyncFSWAL when user does not specify AsyncFSWAL explicitly** + +As we hack into the internal of DFSClient when implementing AsyncFSWAL to get better performance, a patch release of hadoop can make it broken. + +So now, if user does not specify a wal provider, then we will first try to use 'asyncfs', i.e, the AsyncFSWALProvider. If we fail due to some compatible issues, we will fallback to 'filesystem', i.e, FSHLog. + + +--- + +* [HBASE-20193](https://issues.apache.org/jira/browse/HBASE-20193) | *Critical* | **Basic Replication Web UI - Regionserver** + +After HBASE-20193, we add a section to web ui to show the replication status of each wal group. There are 2 parts of this section, they both show the peerId, wal group and current replicating log of each replication source. And one is showing the information of replication log queue, i.e. size of current log, log queue size and replicating offset. The other one is showing the delay of replication, i.e. last shipped age and replication delay. +If the offset shows -1 and replication delay is UNKNOWN, that means replication is not started. This may be caused by this peer is disabled or the replicationEndpoint is sleeping due to some reason. + + +--- + +* [HBASE-19997](https://issues.apache.org/jira/browse/HBASE-19997) | *Blocker* | **[rolling upgrade] 1.x =\> 2.x** + +Now we have a 'basically work' solution for rolling upgrade from 1.4.x to 2.x. Please see the "Rolling Upgrade from 1.x to 2.x" section in ref guide for more details. + + +--- + +* [HBASE-20270](https://issues.apache.org/jira/browse/HBASE-20270) | *Major* | **Turn off command help that follows all errors in shell** + + +The command help that followed all errors, before, is now no longer available. Erroneous command inputs would now just show error-texts followed by the shell command to try for seeing the help message. It looks like: For usage try 'help “create”’. Operators can copy-paste the command to get the help message. + + +--- + +* [HBASE-20194](https://issues.apache.org/jira/browse/HBASE-20194) | *Critical* | **Basic Replication WebUI - Master** + +After HBASE-20194, we added 2 parts to master's web page. +One is Peers that shows all replication peers and some of their configurations, like peer id, cluster key, state, bandwidth, and which namespace or table it will replicate. +The other one is replication status of all regionservers, we added a tab to region servers division, then we can check the replication delay of all region servers for any peer. This table shows AgeOfLastShippedOp, SizeOfLogQueue and ReplicationLag for each regionserver and the table is sort by ReplicationLag in descending order. By this way we can easily find the problematic region server. If the replication delay is UNKNOWN, that means this walGroup doesn't start replicate yet and it may get disabled. ReplicationLag will update once this peer start replicate. + + +--- + +* [HBASE-18569](https://issues.apache.org/jira/browse/HBASE-18569) | *Major* | **Add prefetch support for async region locator** + +Add prefetch support for async region locator. The default value is 10. Set 'hbase.client.locate.prefetch.limit' in hbase-site.xml if you want to use another value for it. + + +--- + +* [HBASE-20642](https://issues.apache.org/jira/browse/HBASE-20642) | *Major* | **IntegrationTestDDLMasterFailover throws 'InvalidFamilyOperationException** + +This changes client-side nonce generation to use the same nonce for re-submissions of client RPC DDL operations. + + +--- + +* [HBASE-20708](https://issues.apache.org/jira/browse/HBASE-20708) | *Blocker* | **Remove the usage of RecoverMetaProcedure in master startup** + +Introduce an InitMetaProcedure to initialize meta table for a new HBase deploy. Marked RecoverMetaProcedure deprecated and remove the usage of it in the current code base. We still need to keep it in place for compatibility. The code in RecoverMetaProcedure has been moved to ServerCrashProcedure, and SCP will always be enabled and we will rely on it to bring meta region online. + +For more on the issue addressed by this commit, see the design doc for overview and plan: https://docs.google.com/document/d/1\_872oHzrhJq4ck7f6zmp1J--zMhsIFvXSZyX1Mxg5MA/edit#heading=h.xy1z4alsq7uy + + +--- + +* [HBASE-20334](https://issues.apache.org/jira/browse/HBASE-20334) | *Major* | **add a test that expressly uses both our shaded client and the one from hadoop 3** + + + +HBase now includes a helper script that can be used to run a basic functionality test for a given HBase installation at in `dev_support`. The test can optionally be given an HBase client artifact to rely on and can optionally be given specific Hadoop client artifacts to use. + +For usage information see `./dev-support/hbase_nightly_pseudo-distributed-test.sh --help`. + +The project nightly tests now make use of this test to check running on top of Hadoop 2, Hadoop 3, and Hadoop 3 with shaded client artifacts. + + +--- + +* [HBASE-19735](https://issues.apache.org/jira/browse/HBASE-19735) | *Major* | **Create a minimal "client" tarball installation** + + + +The HBase convenience binary artifacts now includes a client focused tarball that a) includes more docs and b) does not include scripts or jars only needed for running HBase cluster services. + +The new artifact is made as a normal part of the `assembly:single` maven command. + + +--- + +* [HBASE-20615](https://issues.apache.org/jira/browse/HBASE-20615) | *Major* | **emphasize use of shaded client jars when they're present in an install** + + + +HBase's built in scripts now rely on the downstream facing shaded artifacts where possible. In particular interest to downstream users, the `hbase classpath` and `hbase mapredcp` commands now return the relevant shaded client artifact and only those third paty jars needed to make use of them (e.g. slf4j-api, commons-logging, htrace, etc). + +Downstream users should note that by default the `hbase classpath` command will treat having `hadoop` on the shell's PATH as an implicit request to include the output of the `hadoop classpath` command in the returned classpath. This long-existing behavior can be opted out of by setting the environment variable `HBASE_DISABLE_HADOOP_CLASSPATH_LOOKUP` to the value "true". For example: `HBASE_DISABLE_HADOOP_CLASSPATH_LOOKUP="true" bin/hbase classpath`. + + +--- + +* [HBASE-20333](https://issues.apache.org/jira/browse/HBASE-20333) | *Critical* | **break up shaded client into one with no Hadoop and one that's standalone** + + + +Downstream users who need to use both HBase and Hadoop APIs should switch to relying on the new `hbase-shaded-client-byo-hadoop` artifact rather than the existing `hbase-shaded-client` artifact. The new artifact no longer includes and Hadoop classes. + +It should work in combination with either the output of `hadoop classpath` or the Hadoop provided client-facing shaded artifacts in Hadoop 3+. + + +--- + +* [HBASE-20332](https://issues.apache.org/jira/browse/HBASE-20332) | *Critical* | **shaded mapreduce module shouldn't include hadoop** + + + +The `hbase-shaded-mapreduce` artifact no longer include its own copy of Hadoop classes. Users who make use of the artifact via YARN should be able to get these classes from YARN's classpath without having to make any changes. + + +--- + +* [HBASE-20681](https://issues.apache.org/jira/browse/HBASE-20681) | *Major* | **IntegrationTestDriver fails after HADOOP-15406 due to missing hamcrest-core** + + + +Users of our integration tests on Hadoop 3 can now add all needed dependencies by pointing at jars included in our binary convenience artifact. + +Prior to this fix, downstream users on Hadoop 3 would need to get a copy of the Hamcrest v1.3 jar from elsewhere. + + +--- + +* [HBASE-19852](https://issues.apache.org/jira/browse/HBASE-19852) | *Major* | **HBase Thrift 1 server SPNEGO Improvements** + +Adds two new properties for hbase-site.xml for THRIFT SPNEGO when in HTTP mode: +\* hbase.thrift.spnego.keytab.file +\* hbase.thrift.spnego.principal + + +--- + +* [HBASE-20590](https://issues.apache.org/jira/browse/HBASE-20590) | *Critical* | **REST Java client is not able to negotiate with the server in the secure mode** + +Adds a negotiation logic between a secure java REST client and server. After this jira the Java REST client will start responding to the Negotiate challenge sent by the server. Adds RESTDemoClient which can be used to verify whether the secure Java REST client works against secure REST server or not. + + +--- + +* [HBASE-20634](https://issues.apache.org/jira/browse/HBASE-20634) | *Critical* | **Reopen region while server crash can cause the procedure to be stuck** + +A second attempt at fixing HBASE-20173. Fixes unfinished keeping of server state inside AM (ONLINE=\>SPLITTING=\>OFFLINE=\>null). Concurrent unassigns look at server state to figure if they should wait on SCP to wake them up or not. + + +--- + +* [HBASE-20579](https://issues.apache.org/jira/browse/HBASE-20579) | *Minor* | **Improve snapshot manifest copy in ExportSnapshot** + +This patch adds an FSUtil.copyFilesParallel() to help copy files in parallel, and it will return all the paths of directories and files traversed. Thus when we copy manifest in ExportSnapshot, we can copy reference files concurrently and use the paths it returns to help setOwner and setPermission. +The size of thread pool is determined by the configuration snapshot.export.copy.references.threads, and its default value is the number of runtime available processors. + + +--- + +* [HBASE-18116](https://issues.apache.org/jira/browse/HBASE-18116) | *Major* | **Replication source in-memory accounting should not include bulk transfer hfiles** + +Before this change we would incorrectly include the size of enqueued store files for bulk replication in the calculation for determining whether or not to rate limit the transfer of WAL edits. Because bulk replication uses a separate and asynchronous mechanism for file transfer this could incorrectly limit the batch sizes for WAL replication if bulk replication in progress, with negative impact on latency and throughput. + + +--- + +* [HBASE-20592](https://issues.apache.org/jira/browse/HBASE-20592) | *Minor* | **Create a tool to verify tables do not have prefix tree encoding** + +PreUpgradeValidator tool with DataBlockEncoding validator was added to verify cluster is upgradable to HBase 2. + + +--- + +* [HBASE-20501](https://issues.apache.org/jira/browse/HBASE-20501) | *Blocker* | **Change the Hadoop minimum version to 2.7.1** + + +HBase is no longer able to maintain compatibility with Apache Hadoop versions that are no longer receiving updates. This release raises the minimum supported version to Hadoop 2.7.1. Downstream users are strongly advised to upgrade to the latest Hadoop 2.7 maintenance release. + +Downstream users of earlier HBase versions are similarly advised to upgrade to Hadoop 2.7.1+. When doing so, it is especially important to follow the guidance from [the HBase Reference Guide's Hadoop section](http://hbase.apache.org/book.html#hadoop) on replacing the Hadoop artifacts bundled with HBase. + + +--- + +* [HBASE-20601](https://issues.apache.org/jira/browse/HBASE-20601) | *Minor* | **Add multiPut support and other miscellaneous to PE** + +1. Add multiPut support +Set --multiPut=number to enable batchput(meanwhile, --autoflush need be set to false) + +2. Add Connection Count support +Added a new parameter connCount to PE. set --connCount=2 means all threads will share 2 connections. +oneCon option and connCount option shouldn't be set at the same time. + +3. Add avg RT and avg TPS/QPS statstic for all threads + +4. Delete some redundant code +Now RandomWriteTest is inherited from SequentialWrite. + + +--- + +* [HBASE-20544](https://issues.apache.org/jira/browse/HBASE-20544) | *Blocker* | **downstream HBaseTestingUtility fails with invalid port** + + + +HBase now relies on an internal mechanism to determine when it is running a local hbase cluster meant for external interaction vs an encapsulated test. When created via the `HBaseTestingUtility`, ports for Master and RegionServer services and UIs will be set to random ports to allow for multiple parallel uses on a single machine. Normally when running a Standalone HBase Deployment (as described in the HBase Reference Guide) the ports will be picked according to the same defaults used in a full cluster set up. If you wish to instead use the random port assignment set `hbase.localcluster.assign.random.ports` to true. + + +--- + +* [HBASE-20004](https://issues.apache.org/jira/browse/HBASE-20004) | *Minor* | **Client is not able to execute REST queries in a secure cluster** + +Added 'hbase.rest.http.allow.options.method' configuration property to allow user to decide whether Rest Server HTTP should allow OPTIONS method or not. By default it is enabled in HBase 2.1.0+ versions and in other versions it is disabled. +Similarly 'hbase.thrift.http.allow.options.method' is added HBase 1.5, 2.1.0 and 3.0.0 versions. It is disabled by default. + + +--- + +* [HBASE-20327](https://issues.apache.org/jira/browse/HBASE-20327) | *Minor* | **When qualifier is not specified, append and incr operation do not work (shell)** + +This change will enable users to perform append and increment operation with null qualifier via hbase-shell. + + +--- + +* [HBASE-18842](https://issues.apache.org/jira/browse/HBASE-18842) | *Minor* | **The hbase shell clone\_snaphost command returns bad error message** + + + +When attempting to clone a snapshot but using a namespace that does not exist, the HBase shell will now correctly report the exception as caused by the passed namespace. Previously, the shell would report that the problem was an unknown namespace but it would claim the user provided table name was not found as a namespace. Both before and after this change the shell properly used the passed namespace to attempt to handle the request. + + +--- + +* [HBASE-20406](https://issues.apache.org/jira/browse/HBASE-20406) | *Major* | **HBase Thrift HTTP - Shouldn't handle TRACE/OPTIONS methods** + + +When configured to do thrift-over-http, the HBase Thrift API Server no longer accepts the HTTP methods TRACE nor OPTIONS. + + +--- + +* [HBASE-20046](https://issues.apache.org/jira/browse/HBASE-20046) | *Major* | **Reconsider the implementation for serial replication** + +Now in replication we can make sure the order of pushing logs is same as the order of requests from client. Set the serial flag to true for a replication peer to enable this feature. + + +--- + +* [HBASE-20159](https://issues.apache.org/jira/browse/HBASE-20159) | *Major* | **Support using separate ZK quorums for client** + +After HBASE-20159 we allow client to use different ZK quorums by introducing three new properties: hbase.client.zookeeper.quorum and hbase.client.zookeeper.property.clientPort to specify client zookeeper properties (note that the combination of these two properties should be different from the server ZK quorums), and hbase.client.zookeeper.observer.mode to indicate whether the client ZK nodes are in observer mode (false by default) + +HConstants.DEFAULT\_ZOOKEPER\_CLIENT\_PORT has been removed in HBase 3.0 and replaced by the correctly spelled DEFAULT\_ZOOKEEPER\_CLIENT\_PORT. + + +--- + +* [HBASE-20242](https://issues.apache.org/jira/browse/HBASE-20242) | *Major* | **The open sequence number will grow if we fail to open a region after writing the max sequence id file** + +Now when opening a region, we will store the current max sequence id of the region to its max sequence id file instead of the 'next sequence id'. This could avoid the sequence id bumping when we fail to open a region, and also align to the behavior when we close a region. + + +--- + +* [HBASE-19024](https://issues.apache.org/jira/browse/HBASE-19024) | *Critical* | **Configurable default durability for synchronous WAL** + +The default durability setting for the synchronous WAL is Durability.SYNC\_WAL, which triggers HDFS hflush() to flush edits to the datanodes. We also support Durability.FSYNC\_WAL, which instead triggers HDFS hsync() to flush \_and\_ fsync edits. This change introduces the new configuration setting "hbase.wal.hsync", defaulting to FALSE, that if set to TRUE changes the default durability setting for the synchronous WAL to FSYNC\_WAL. + + +--- + +* [HBASE-19389](https://issues.apache.org/jira/browse/HBASE-19389) | *Critical* | **Limit concurrency of put with dense (hundreds) columns to prevent write handler exhausted** + +After HBASE-19389 we introduced a RegionServer self-protection mechanism to prevent write handler getting exhausted by high concurrency put with dense columns, mainly through two new properties: hbase.region.store.parallel.put.limit.min.column.count to decide what kind of put (with how many columns within a single column family) to limit (100 by default) and hbase.region.store.parallel.put.limit to limit the concurrency (10 by default). There's another property for advanced user and please check source and javadoc of StoreHotnessProtector for more details. + + +--- + +* [HBASE-20148](https://issues.apache.org/jira/browse/HBASE-20148) | *Major* | **Make serial replication as a option for a peer instead of a table** + +A new method setSerial has been added to the interface ReplicationPeerConfigBuilder which is marked as IA.Public. This interface is not supposed to be implemented by client code, but if you do, this will be an incompatible change as you need to add this method to your implementation too. + + +--- + +* [HBASE-19397](https://issues.apache.org/jira/browse/HBASE-19397) | *Major* | **Design procedures for ReplicationManager to notify peer change event from master** + +Introduce 5 procedures to do peer modifications: +AddPeerProcedure +RemovePeerProcedure +UpdatePeerConfigProcedure +EnablePeerProcedure +DisablePeerProcedure + +The procedures are all executed with the following stage: +1. Call pre CP hook, if an exception is thrown then give up +2. Check whether the operation is valid, if not then give up +3. Update peer storage. Notice that if we have entered this stage, then we can not rollback any more. +4. Schedule sub procedures to refresh the peer config on every RS. +5. Do post cleanup if any. +6. Call post CP hook. The exception thrown will be ignored since we have already done the work. + +The procedure will hold an exclusive lock on the peer id, so now there is no concurrent modifications on a single peer. + +And now it is guaranteed that once the procedure is done, the peer modification has already taken effect on all RSes. + +Abstracte a storage layer for replication peer/queue manangement, and refactored the upper layer to remove zk related naming/code/comment. + +Add pre/postExecuteProcedures CP hooks to RegionServerObserver, and add permission check for executeProcedures method which requires the caller to be system user or super user. + +On rolling upgrade: just do not do any replication peer modifications during the rolling upgrading. There is no pb/layout changes on the peer/queue storage on zk. +# HBASE 2.0.0 Release Notes + + +These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements. + + +--- + +* [HBASE-20464](https://issues.apache.org/jira/browse/HBASE-20464) | *Major* | **Disable IMC** + +Change the default so that on creation of new tables, In-Memory Compaction BASIC is NOT enabled. + +This change is in branch-2.0 only, not in branch-2. + + +--- + +* [HBASE-20276](https://issues.apache.org/jira/browse/HBASE-20276) | *Blocker* | **[shell] Revert shell REPL change and document** + + + + + +The HBase shell now behaves as it did prior to the changes that started in HBASE-15965. Namely, some shell commands return values that may be further manipulated within the shell's IRB session. + +The command line option `--return-values` is no longer acted on by the shell since it now always behaves as it did when passed this parameter. Passing the option results in a harmless warning about this change. + +Users who wish to maintain the behavior seen in the 1.4.0-1.4.2 releases of the HBase shell should refer to the section _irbrc_ in the reference guide for how to configure their IRB session to avoid echoing expression results to the console. + + +--- + +* [HBASE-18792](https://issues.apache.org/jira/browse/HBASE-18792) | *Blocker* | **hbase-2 needs to defend against hbck operations** + +As of HBase version 2.0, the hbck tool is significantly changed. In general, all Read-Only options are supported and can be be used safely. Most -fix/ -repair options are NOT supported. Please see usage below for details on which options are not supported: + + +Usage: fsck [opts] {only tables} + where [opts] are: + -help Display help options (this) + -details Display full report of all regions. + -timelag \ Process only regions that have not experienced any metadata updates in the last \ seconds. + -sleepBeforeRerun \ Sleep this many seconds before checking if the fix worked if run with -fix + -summary Print only summary of the tables and status. + -metaonly Only check the state of the hbase:meta table. + -sidelineDir \ HDFS path to backup existing meta. + -boundaries Verify that regions boundaries are the same between META and store files. + -exclusive Abort if another hbck is exclusive or fixing. + + Datafile Repair options: (expert features, use with caution!) + -checkCorruptHFiles Check all Hfiles by opening them to make sure they are valid + -sidelineCorruptHFiles Quarantine corrupted HFiles. implies -checkCorruptHFiles + + Replication options + -fixReplication Deletes replication queues for removed peers + + Metadata Repair options supported as of version 2.0: (expert features, use with caution!) + -fixVersionFile Try to fix missing hbase.version file in hdfs. + -fixReferenceFiles Try to offline lingering reference store files + -fixHFileLinks Try to offline lingering HFileLinks + -noHdfsChecking Don't load/check region info from HDFS. Assumes hbase:meta region info is good. Won't check/fix any HDFS issue, e.g. hole, orphan, or overlap + -ignorePreCheckPermission ignore filesystem permission pre-check + +NOTE: Following options are NOT supported as of HBase version 2.0+. + + UNSUPPORTED Metadata Repair options: (expert features, use with caution!) + -fix Try to fix region assignments. This is for backwards compatiblity + -fixAssignments Try to fix region assignments. Replaces the old -fix + -fixMeta Try to fix meta problems. This assumes HDFS region info is good. + -fixHdfsHoles Try to fix region holes in hdfs. + -fixHdfsOrphans Try to fix region dirs with no .regioninfo file in hdfs + -fixTableOrphans Try to fix table dirs with no .tableinfo file in hdfs (online mode only) + -fixHdfsOverlaps Try to fix region overlaps in hdfs. + -maxMerge \ When fixing region overlaps, allow at most \ regions to merge. (n=5 by default) + -sidelineBigOverlaps When fixing region overlaps, allow to sideline big overlaps + -maxOverlapsToSideline \ When fixing region overlaps, allow at most \ regions to sideline per group. (n=2 by default) + -fixSplitParents Try to force offline split parents to be online. + -removeParents Try to offline and sideline lingering parents and keep daughter regions. + -fixEmptyMetaCells Try to fix hbase:meta entries not referencing any region (empty REGIONINFO\_QUALIFIER rows) + + UNSUPPORTED Metadata Repair shortcuts + -repair Shortcut for -fixAssignments -fixMeta -fixHdfsHoles -fixHdfsOrphans -fixHdfsOverlaps -fixVersionFile -sidelineBigOverlaps -fixReferenceFiles-fixHFileLinks + -repairHoles Shortcut for -fixAssignments -fixMeta -fixHdfsHoles + + +--- + +* [HBASE-19994](https://issues.apache.org/jira/browse/HBASE-19994) | *Major* | **Create a new class for RPC throttling exception, make it retryable.** + +A new RpcThrottlingException deprecates ThrottlingException. The new RpcThrottlingException is a retryable Exception that clients will retry when Rpc throttling quota is exceeded. The deprecated ThrottlingException is a nonretryable Exception. + + +--- + +* [HBASE-20224](https://issues.apache.org/jira/browse/HBASE-20224) | *Blocker* | **Web UI is broken in standalone mode** + +Standalone webui was broken inadvertently by HBASE-20027. + + +--- + +* [HBASE-18784](https://issues.apache.org/jira/browse/HBASE-18784) | *Major* | **Use of filesystem that requires hflush / hsync / append / etc should query outputstream capabilities** + + + + + +If HBase is run on top of Apache Hadoop libraries that support the needed APIs it will verify that underlying Filesystem implementations provide the needed durability mechanisms to safely operate. The needed APIs *should* be present in Hadoop 3 release and Hadoop 2 releases starting in the Hadoop 2.9 series. If the APIs are not available, HBase behaves as it has in previous releases (that is, it moves forward assuming such a check would pass). + +Where this check fails, it is unsafe to rely on HBase in a production setting. In the event of process or node failure, the HBase RegionServer process may fail to have access to all the data it previously wrote to its write ahead log, resulting in data loss. In the event of process or node failure, the HBase master process may lose all or part of the write ahead log that it relies on for cluster management operations, leaving the cluster in an inconsistent state that we aren't sure it could recover from. + +Notably, the LocalFileSystem implementation provided by Hadoop reports (accurately) via these new APIs that it can not provide the durability HBase needs to operate. As such, the current instructions for single-node HBase operation have been updated both with a) how to bypass this safety check and b) a strong warning about the dire consequences of doing so outside of a dev/test environment. + + +--- + +* [HBASE-20219](https://issues.apache.org/jira/browse/HBASE-20219) | *Critical* | **An error occurs when scanning with reversed=true and loadColumnFamiliesOnDemand=true** + +Throws DoNotRetryIOException when you ask for a reverse scan loading adjacent column families on demand. Previous it threw IllegalStateException + + +--- + +* [HBASE-20358](https://issues.apache.org/jira/browse/HBASE-20358) | *Minor* | **Fix bin/hbase thrift usage text** + +Cleanup usage message and command-line processing (no functional change). + + +--- + +* [HBASE-20182](https://issues.apache.org/jira/browse/HBASE-20182) | *Blocker* | **Can not locate region after split and merge** + +Now if we hit a split parent when locating a region, we will skip to the next row and try again until the region does not contain our row. So there will be no RegionOfflineException for a split parent any more, instead, if the split children have not been onlined yet, i.e, we finally arrive at a region which does not contain our row, an IOException will be thrown. + + +--- + +* [HBASE-20149](https://issues.apache.org/jira/browse/HBASE-20149) | *Critical* | **Purge dev javadoc from bin tarball (or make a separate tarball of javadoc)** + +We no longer include dev or dev test javadocs in our binary bundle. We still build them; they are just not included because they were half the size of the resultant tarball. + +Here is our story on javadoc as of this commit: + + \* apidocs - user facing main api javadocs. currently for a release line, published on website and linked from menu. included in the bin tarball + \* devapidocs - hbase internal javadocs. currently for a release line, published on the website but not linked from the menu. no longer included in the bin tarball. + \* testapidocs - user facing test scope api javadocs. currently for a release line, not published. included in the bin tarball. + \* testdevapidocs - hbase internal test scope javadocs. currently for a release line, not published. no longer included in the bin tarball + + +--- + +* [HBASE-18828](https://issues.apache.org/jira/browse/HBASE-18828) | *Blocker* | **[2.0] Generate CHANGES.txt** + +Moves us over to yetus releasedocmaker tooling generating CHANGES. CHANGES is not markdown (CHANGES.md) as opposed to CHANGES.txt. We've also added a new RELEASENOTES.md that lists JIRA release notes (courtesy of releasedocmaker). + +CHANGES/RELEASENOTES are current as of now. Will need a 'freshening' when we cut the RC. + + +--- + +* [HBASE-14175](https://issues.apache.org/jira/browse/HBASE-14175) | *Critical* | **Adopt releasedocmaker for better generated release notes** + +We will use yetus releasedocmaker to make our changes doc from here on out. A CHANGELOG.md will replace our current CHANGES.txt. Adjacent, we'll keep up a RELEASENOTES.md doc courtesy of releasedocmaker. + +Over in HBASE-18828 is where we are working through steps for the RM integrating this new tooling. + + +--- + +* [HBASE-16499](https://issues.apache.org/jira/browse/HBASE-16499) | *Critical* | **slow replication for small HBase clusters** + +Changed the default value for replication.source.ratio from 0.1 to 0.5. Which means now by default 50% of the total RegionServers in peer cluster(s) will participate in replication. + + +--- + +* [HBASE-16459](https://issues.apache.org/jira/browse/HBASE-16459) | *Trivial* | **Remove unused hbase shell --format option** + + + + + + +The HBase `shell` command no longer recognizes the option `--format`. Previously this option only recognized the default value of 'console'. The default value is now always used. + + +--- + +* [HBASE-20259](https://issues.apache.org/jira/browse/HBASE-20259) | *Critical* | **Doc configs for in-memory-compaction and add detail to in-memory-compaction logging** + +Disables in-memory compaction as default. + +Adds logging of in-memory compaction configuration on creation. + +Adds a chapter to the refguide on this new feature. + + +--- + +* [HBASE-20282](https://issues.apache.org/jira/browse/HBASE-20282) | *Major* | **Provide short name invocations for useful tools** + +\`hbase regionsplitter\` is a new short invocation for \`hbase org.apache.hadoop.hbase.util.RegionSplitter\` + + +--- + +* [HBASE-20314](https://issues.apache.org/jira/browse/HBASE-20314) | *Major* | **Precommit build for master branch fails because of surefire fork fails** + +Upgrade surefire plugin to 2.21.0. + + +--- + +* [HBASE-20130](https://issues.apache.org/jira/browse/HBASE-20130) | *Critical* | **Use defaults (16020 & 16030) as base ports when the RS is bound to localhost** + + + + + +When region servers bind to localhost (mostly in pseudo distributed mode), default ports (16020 & 16030) are used as base ports. This will support up to 9 instances of region servers by default with `local-regionservers.sh` script. If additional instances are needed, see the reference guide on how to deploy with a different range using the environment variables `HBASE_RS_BASE_PORT` and `HBASE_RS_INFO_BASE_PORT`. + + +--- + +* [HBASE-20111](https://issues.apache.org/jira/browse/HBASE-20111) | *Critical* | **Able to split region explicitly even on shouldSplit return false from split policy** + +When a split is requested on a Region, the RegionServer hosting that Region will now consult the configured SplitPolicy for that table when determining if a split of that Region is allowed. When a split is disallowed (due to the Region not being OPEN or the SplitPolicy denying the request), the operation will \*not\* be implicitly retried as it has previously done. Users will need to guard against and explicitly retry region split requests which are denied by the system. + + +--- + +* [HBASE-20223](https://issues.apache.org/jira/browse/HBASE-20223) | *Blocker* | **Use hbase-thirdparty 2.1.0** + +Moves commons-cli and commons-collections4 into the HBase thirdparty shaded jar which means that these are no longer generally available for users on the classpath. + + +--- + +* [HBASE-19128](https://issues.apache.org/jira/browse/HBASE-19128) | *Major* | **Purge Distributed Log Replay from codebase, configurations, text; mark the feature as unsupported, broken.** + +Removes Distributed Log Replay feature. Disable the feature before upgrading. + + +--- + +* [HBASE-19504](https://issues.apache.org/jira/browse/HBASE-19504) | *Major* | **Add TimeRange support into checkAndMutate** + +1) checkAndMutate accept a TimeRange to query the specified cell +2) remove writeToWAL flag from Region#checkAndMutate since it is useless (this is a incompatible change) + + +--- + +* [HBASE-20237](https://issues.apache.org/jira/browse/HBASE-20237) | *Critical* | **Put back getClosestRowBefore and throw UnknownProtocolException instead... for asynchbase client** + +Throw UnknownProtocolException if a client connects and tries to invoke the old getClosestRowOrBefore method. Pre-hbase-1.0.0 or asynchbase do this instead of using its replacement, the reverse Scan. + +getClosestRowOrBefore was implemented as a flag on Get. Before this patch though the flag was set, hbase2 were ignoring it. This made it look like a pre-1.0.0 client was 'working' but then it'd fail finding the appropriate Region for a client-specified row doing lookups into hbase:meta. + + +--- + +* [HBASE-20247](https://issues.apache.org/jira/browse/HBASE-20247) | *Major* | **Set version as 2.0.0 in branch-2.0 in prep for first RC** + +Set version as 2.0.0 on branch-2.0. + + +--- + +* [HBASE-20090](https://issues.apache.org/jira/browse/HBASE-20090) | *Major* | **Properly handle Preconditions check failure in MemStoreFlusher$FlushHandler.run** + +When there is concurrent region split, MemStoreFlusher may not find flushable region if the only candidate region left hasn't received writes (resulting in 0 data size). +After this JIRA, such scenario wouldn't trigger Precondition assertion (replaced by an if statement to see whether there is any flushable region). +If there is no flushable region, a DEBUG log would appear in region server log, saying "Above memory mark but there is no flushable region". + + +--- + +* [HBASE-19552](https://issues.apache.org/jira/browse/HBASE-19552) | *Major* | **update hbase to use new thirdparty libs** + +hbase-thirdparty libs have moved to o.a.h.thirdparty offset. Netty shading system property is no longer necessary. + + +--- + +* [HBASE-20119](https://issues.apache.org/jira/browse/HBASE-20119) | *Minor* | **Introduce a pojo class to carry coprocessor information in order to make TableDescriptorBuilder accept multiple cp at once** + +1) Make all methods in TableDescriptorBuilder be setter pattern. +addCoprocessor -\> setCoprocessor +addColumnFamily -\> setColumnFamily +(addCoprocessor and addColumnFamily are still in branch-2 but they are marked as deprecated) +2) add CoprocessorDescriptor to carry cp information +3) add CoprocessorDescriptorBuilder to build CoprocessorDescriptor +4) TD disallow user to set negative priority to coprocessor since parsing the negative value will cause a exception + + +--- + +* [HBASE-17165](https://issues.apache.org/jira/browse/HBASE-17165) | *Critical* | **Add retry to LoadIncrementalHFiles tool** + +Adds retry to load of incremental hfiles. Pertinent key is HConstants.HBASE\_CLIENT\_RETRIES\_NUMBER. Default is HConstants.DEFAULT\_HBASE\_CLIENT\_RETRIES\_NUMBER. + + +--- + +* [HBASE-20108](https://issues.apache.org/jira/browse/HBASE-20108) | *Critical* | **\`hbase zkcli\` falls into a non-interactive prompt after HBASE-15199** + +This issue fixes a runtime dependency issues where JLine is not made available on the classpath which causes the ZooKeeper CLI to appear non-interactive. JLine was being made available unintentionally via the JRuby jar file on the classpath for the HBase shell. While the JRuby jar is not always present, the fix made here was to selectively include the JLine dependency on the zkcli command's classpath. + + +--- + +* [HBASE-8770](https://issues.apache.org/jira/browse/HBASE-8770) | *Blocker* | **deletes and puts with the same ts should be resolved according to mvcc/seqNum** + +This behavior is available as a new feature. See HBASE-15968 release note. + +This issue is just about adding to the refguide documentation on the HBASE\_15968 feature. + + +--- + +* [HBASE-19114](https://issues.apache.org/jira/browse/HBASE-19114) | *Major* | **Split out o.a.h.h.zookeeper from hbase-server and hbase-client** + +Splits out most of ZooKeeper related code into a separate new module: hbase-zookeeper. +Also, renames some ZooKeeper related classes to follow a common naming pattern - "ZK" prefix - as compared to many different styles earlier. + + +--- + +* [HBASE-19437](https://issues.apache.org/jira/browse/HBASE-19437) | *Critical* | **Batch operation can't handle the null result for Append/Increment** + +The result from server is changed from null to Result.EMPTY\_RESULT when Append/Increment operation can't retrieve any data from server, + + +--- + +* [HBASE-17448](https://issues.apache.org/jira/browse/HBASE-17448) | *Major* | **Export metrics from RecoverableZooKeeper** + +Committed to master and branch-1 + + +--- + +* [HBASE-19400](https://issues.apache.org/jira/browse/HBASE-19400) | *Major* | **Add missing security checks in MasterRpcServices** + +Added ACL check to following Admin functions: +enableCatalogJanitor, runCatalogJanitor, cleanerChoreSwitch, runCleanerChore, execProcedure, execProcedureWithReturn, normalize, normalizerSwitch, coprocessorService. +When ACL is enabled, only those with ADMIN rights will be able to invoke these operations successfully. + + +--- + +* [HBASE-20048](https://issues.apache.org/jira/browse/HBASE-20048) | *Blocker* | **Revert serial replication feature** + +Revert the serial replication feature from all branches. Plan to reimplement it soon and land onto 2.1 release line. + + +--- + +* [HBASE-19166](https://issues.apache.org/jira/browse/HBASE-19166) | *Blocker* | **AsyncProtobufLogWriter persists ProtobufLogWriter as class name for backward compatibility** + +For backward compatibility, AsyncProtobufLogWriter uses "ProtobufLogWriter" as writer class name and SecureAsyncProtobufLogWriter uses "SecureProtobufLogWriter" as writer class name. + + +--- + +* [HBASE-18596](https://issues.apache.org/jira/browse/HBASE-18596) | *Blocker* | **[TEST] A hbase1 cluster should be able to replicate to a hbase2 cluster; verify** + +Replication between versions verified as basically working. 0.98.25-SNAPSHOT to beta-2 hbase2 and a 1.2-ish version tried. + + +--- + +* [HBASE-20017](https://issues.apache.org/jira/browse/HBASE-20017) | *Blocker* | **BufferedMutatorImpl submit the same mutation repeatedly** + +This change fixes multithreading issues in the implementation of BufferedMutator. BufferedMutator should not be used with 1.4 releases prior to 1.4.2. + + +--- + +* [HBASE-20032](https://issues.apache.org/jira/browse/HBASE-20032) | *Minor* | **Receving multiple warnings for missing reporting.plugins.plugin.version** + +Add (latest) version elements missing from reporting plugins in top-level pom. + + +--- + +* [HBASE-19954](https://issues.apache.org/jira/browse/HBASE-19954) | *Major* | **Separate TestBlockReorder into individual tests to avoid ShutdownHook suppression error against hadoop3** + +hadoop3 minidfscluster removes all shutdown handlers when the cluster goes down which made this test that does FS-stuff fail (Fix was to break up the test so each test method ran with an unadulterated FS). + + +--- + +* [HBASE-20014](https://issues.apache.org/jira/browse/HBASE-20014) | *Major* | **TestAdmin1 Times out** + +Ups the overall test timeout from 10 minutes to 13minutes. 15minutes is the surefire timeout. + + +--- + +* [HBASE-20020](https://issues.apache.org/jira/browse/HBASE-20020) | *Critical* | **Make sure we throw DoNotRetryIOException when ConnectionImplementation is closed** + +Add checkClosed to core Client methods. Avoid unnecessary retry. + + +--- + +* [HBASE-19978](https://issues.apache.org/jira/browse/HBASE-19978) | *Major* | **The keepalive logic is incomplete in ProcedureExecutor** + +Completes keep-alive logic and then enables it; ProcedureExecutor Workers will spin up more threads when need settling back to the core count after the burst in demand has passed. Default keep-alive is one minute. Default core-count is CPUs/4 or 16, which ever is greater. Maximum is an arbitrary core-count \* 10 (a limit that should never be hit and if it is, there is something else very wrong). + + +--- + +* [HBASE-19950](https://issues.apache.org/jira/browse/HBASE-19950) | *Minor* | **Introduce a ColumnValueFilter** + +ColumnValueFilter provides a way to fetch matched cells only by providing specified column, value and a comparator, which is different from SingleValueFilter, fetching an entire row as soon as a matched cell found. + + +--- + +* [HBASE-18294](https://issues.apache.org/jira/browse/HBASE-18294) | *Major* | **Reduce global heap pressure: flush based on heap occupancy** + +A region is flushed if its memory component exceeds the region flush threshold. +A flush policy decides which stores to flush by comparing the size of the store to a column-family-flush threshold. +If the overall size of all memstores in the machine exceeds the bounds defined by the administrator (denoted global pressure) a region is selected and flushed. +HBASE-18294 changes flush decisions to be based on heap-occupancy and not data (key-value) size, consistently across levels. This rolls back some of the changes by HBASE-16747. Specifically, +(1) RSs, Regions and stores track their overall on-heap and off-heap occupancy, +(2) A region is flushed when its on-heap+off-heap size exceeds the region flush threshold specified in hbase.hregion.memstore.flush.size, +(3) The store to be flushed is chosen based on its on-heap+off-heap size +(4) At the RS level, a flush is triggered when the overall on-heap exceeds the on-heap limit, or when the overall off-heap size exceeds the off-heap limit (low/high water marks). + +Note that when the region flush size is set to XXmb a region flush may be triggered even before writing keys and values of size XX because the total heap occupancy of the region which includes additional metadata exceeded the threshold. + + +--- + +* [HBASE-19116](https://issues.apache.org/jira/browse/HBASE-19116) | *Critical* | **Currently the tail of hfiles with CellComparator\* classname makes it so hbase1 can't open hbase2 written hfiles; fix** + +hbase-2.x sets KeyValue Comparators into the tail of hfiles rather than CellComparator, what it uses internally, just so hbase-1.x can continue to read hbase-2.x written hfiles. + + +--- + +* [HBASE-19948](https://issues.apache.org/jira/browse/HBASE-19948) | *Major* | **Since HBASE-19873, HBaseClassTestRule, Small/Medium/Large has different semantic** + +In subtask, fixed doc and annotations to be more explicit that test timings are for the whole Test Fixture/Test Class/Test Suite NOT the test method only as we'd measuring up to this (tother subtasks untethered Categorization and test timeout such that all categories now have a ten minute timeout -- no test can run longer than ten minutes or it gets killed/timedout). + + +--- + +* [HBASE-16060](https://issues.apache.org/jira/browse/HBASE-16060) | *Blocker* | **1.x clients cannot access table state talking to 2.0 cluster** + +By default, we mirror table state to zookeeper so hbase-1.x clients will work against an hbase-2 cluster (With this patch, hbase-1.x clients can do most Admin functions including table create; hbase-1.x clients can do all Table/DML against hbase-2 cluster). + +Flag to disable mirroring is hbase.mirror.table.state.to.zookeeper; set it to false in Configuration. + +Related, Master on startup will look to see if there are table state znodes left over by an hbase-1 instance. If any found, it will migrate the table state to hbase-2 setting the state into the hbase:meta table where table state is now kept. We will do this check on every Master start. Notion is that this will be overall beneficial with low impediment. To disable the migration check, set hbase.migrate.table.state.from.zookeeper to false. + + +--- + +* [HBASE-19900](https://issues.apache.org/jira/browse/HBASE-19900) | *Critical* | **Region-level exception destroy the result of batch** + +This fix makes the following changes to how client handle the both of action result and region exception. +1) honor the action result rather than region exception. If the action have both of true result and region exception, the action is fine as the exception is caused by other actions which are in the same region. +2) honor the action exception rather than region exception. If the action have both of action exception and region exception, we deal with the action exception only. If we also handle the region exception for the same action, it will introduce the negative count of actions in progress. The AsyncRequestFuture#waitUntilDone will block forever. + + +--- + +* [HBASE-19841](https://issues.apache.org/jira/browse/HBASE-19841) | *Major* | **Tests against hadoop3 fail with StreamLacksCapabilityException** + +HBaseTestingUtility now assumes that all clusters will use local storage until a MiniDFSCluster is started or assigned. + + +--- + +* [HBASE-19528](https://issues.apache.org/jira/browse/HBASE-19528) | *Major* | **Major Compaction Tool** + +Tool allows you to compact a cluster with given concurrency of regionservers compacting at a given time. If tool completes successfully everything requested for compaction will be compacted, regardless of region moves, splits and merges. + + +--- + +* [HBASE-19919](https://issues.apache.org/jira/browse/HBASE-19919) | *Major* | **Tidying up logging** + +(I thought this change innocuous but I made work for a co-worker when I upped interval between log cleaner runs -- meant a smoke test failed because we were slow doing an expected cleanup). + +Edit of log lines removing redundancy. Shorten thread names shown in log. Made some log TRACE instead of DEBUG. Capitalizations. + +Upped log cleaner interval from every minute to every ten minutes. hbase.master.cleaner.interval + +Lowered default count of threads started by Procedure Executor from count of CPUs to 1/4 of count of CPUs. + + +--- + +* [HBASE-19901](https://issues.apache.org/jira/browse/HBASE-19901) | *Major* | **Up yetus proclimit on nightlies** + +Pass to yetus a dockermemlimit of 20G and a proclimit of 10000. Defaults are 4G and 1G respectively. + + +--- + +* [HBASE-19912](https://issues.apache.org/jira/browse/HBASE-19912) | *Minor* | **The flag "writeToWAL" of Region#checkAndRowMutate is useless** + +Remove useless 'writeToWAL' flag of Region#checkAndRowMutate & related class + + +--- + +* [HBASE-19911](https://issues.apache.org/jira/browse/HBASE-19911) | *Major* | **Convert some tests from small to medium because they are timing out: TestNettyRpcServer, TestClientClusterStatus, TestCheckTestClasses** + +Changed a few tests so they are medium sized rather than small size. + +Also, upped the time we wait on small tests to 60seconds from 30seconds. Small tests are tests that run in 15seconds or less. What we changed was the timeout watcher. It is now more lax, more tolerant of dodgy infrastructure that might be running tests slowly. + + +--- + +* [HBASE-19892](https://issues.apache.org/jira/browse/HBASE-19892) | *Major* | **Checking 'patch attach' and yetus 0.7.0 and move to Yetus 0.7.0** + +Moved our internal yetus reference from 0.6.0 to 0.7.0. Concurrently, I changed hadoopqa to run with 0.7.0 (by editing the config in jenkins). + + +--- + +* [HBASE-19873](https://issues.apache.org/jira/browse/HBASE-19873) | *Major* | **Add a CategoryBasedTimeout ClassRule for all UTs** + +Along with @category -- small, medium, large -- all hbase tests must now carry a ClassRule as follows: + ++ @ClassRule ++ public static final HBaseClassTestRule CLASS\_RULE = ++ HBaseClassTestRule.forClass(TestInterfaceAudienceAnnotations.class); + +where the class changes by test. + +Currently the classrule enforces timeout for the whole test suite -- i.e. if a SmallTest Category then all the tests in the TestSuite must complete inside 60seconds, the timeout we set on SmallTest Category test suite -- but is meant to be a repository for general, runtime, hbase test facility. + + +--- + +* [HBASE-19770](https://issues.apache.org/jira/browse/HBASE-19770) | *Critical* | **Add '--return-values' option to Shell to print return values of commands in interactive mode** + +Introduces a new option to the HBase shell: -r, --return-values. When the shell is in "interactive" mode (default), the return value of shell commands are not returned to the user as they dirty the console output. For those who desire this functionality, the "--return-values" option restores the old functionality of the commands passing their return value to the user. + + +--- + +* [HBASE-15321](https://issues.apache.org/jira/browse/HBASE-15321) | *Major* | **Ability to open a HRegion from hdfs snapshot.** + +HRegion.openReadOnlyFileSystemHRegion() provides the ability to open HRegion from a read-only hdfs snapshot. Because hdfs snapshots are read-only, no cleanup happens when using this API. + + +--- + +* [HBASE-17513](https://issues.apache.org/jira/browse/HBASE-17513) | *Critical* | **Thrift Server 1 uses different QOP settings than RPC and Thrift Server 2 and can easily be misconfigured so there is no encryption when the operator expects it.** + +This change fixes an issue where users could have unintentionally configured the HBase Thrift1 server to run without wire-encryption, when they believed they had configured the Thrift1 server to do so. + + +--- + +* [HBASE-19828](https://issues.apache.org/jira/browse/HBASE-19828) | *Major* | **Flakey TestRegionsOnMasterOptions.testRegionsOnAllServers** + +Disables TestRegionsOnMasterOptions because Regions on Master does not work reliably; see HBASE-19831. + + +--- + +* [HBASE-18963](https://issues.apache.org/jira/browse/HBASE-18963) | *Major* | **Remove MultiRowMutationProcessor and implement mutateRows... methods using batchMutate()** + +Modified HRegion.mutateRow() APIs to use batchMutate() instead of processRowsWithLocks() with MultiRowMutationProcessor. MultiRowMutationProcessor is removed to have single write path that uses batchMutate(). + + +--- + +* [HBASE-19163](https://issues.apache.org/jira/browse/HBASE-19163) | *Major* | **"Maximum lock count exceeded" from region server's batch processing** + +When there are many mutations against the same row in a batch, as each mutation will acquire a shared row lock, it will exceed the maximum shared lock count the java ReadWritelock supports (64k). Along with other optimization, the batch is divided into multiple possible minibatches. A new config is added to limit the maximum number of mutations in the minibatch. + + \ + \hbase.regionserver.minibatch.size\ + \20000\ + \ +The default value is 20000. + + +--- + +* [HBASE-19739](https://issues.apache.org/jira/browse/HBASE-19739) | *Minor* | **Include thrift IDL files in HBase binary distribution** + +Thrift IDLs are now shipped, bundled up in the respective hbase-\*thrift.jars (look for files ending in .thrift). + + +--- + +* [HBASE-11409](https://issues.apache.org/jira/browse/HBASE-11409) | *Major* | **Add more flexibility for input directory structure to LoadIncrementalHFiles** + +Allows for users to bulk load entire tables from hdfs by specifying the parameter -loadTable. This allows you to pass in a table level directory and have all regions column families bulk loaded, if you do not specify the -loadTable parameter LoadIncrementalHFiles will work as before. Note: you must have a pre-created table to run with -loadTable it will not create one for you. + + +--- + +* [HBASE-19769](https://issues.apache.org/jira/browse/HBASE-19769) | *Critical* | **IllegalAccessError on package-private Hadoop metrics2 classes in MapReduce jobs** + +Client-side ZooKeeper metrics which were added to 2.0.0 alpha/beta releases cause issues when launching MapReduce jobs via {{yarn jar}} on the command line. This stems from ClassLoader separation issues that YARN implements. It was chosen that the easiest solution was to remove these ZooKeeper metrics entirely. + + +--- + +* [HBASE-19783](https://issues.apache.org/jira/browse/HBASE-19783) | *Minor* | **Change replication peer cluster key/endpoint from a not-null value to null is not allowed** + +To reduce the confusing behavior, now when you call updatePeerConfig with empty ClusterKey or ReplicationEndpointImpl, but the value of field of the to-be-updated ReplicationPeerConfig is not null, we will throw exception instead of ignoring them. + + +--- + +* [HBASE-19483](https://issues.apache.org/jira/browse/HBASE-19483) | *Major* | **Add proper privilege check for rsgroup commands** + +This JIRA aims at refactoring AccessController, using ACL as core library in CPs. +1. Stripping out a public class AccessChecker from AccessController, using ACL as core library in CPs. AccessChecker don't have any dependency on anything CP related. Create it's instance from other CPS. +2. Change the default value of hbase.security.authorization to false. +3. Don't use CP hooks to check access in RSGroup. Use the access checker instance directly in functions of RSGroupAdminServiceImpl. + + +--- + +* [HBASE-19358](https://issues.apache.org/jira/browse/HBASE-19358) | *Major* | **Improve the stability of splitting log when do fail over** + +After HBASE-19358 we introduced a new property hbase.split.writer.creation.bounded to limit the opening writers for each WALSplitter. If set to true, we won't open any writer for recovered.edits until the entries accumulated in memory reaching hbase.regionserver.hlog.splitlog.buffersize (which defaults at 128M) and will write and close the file in one go instead of keeping the writer open. It's false by default and we recommend to set it to true if your cluster has a high region load (like more than 300 regions per RS), especially when you observed obvious NN/HDFS slow down during hbase (single RS or cluster) failover. + + +--- + +* [HBASE-19651](https://issues.apache.org/jira/browse/HBASE-19651) | *Minor* | **Remove LimitInputStream** + +HBase had copied from guava the file LmiitedInputStream. This commit removes the copied file in favor of (our internal, shaded) guava's ByteStreams.limit. Guava 14.0's LIS noted: "Use ByteStreams.limit(java.io.InputStream, long) instead. This class is scheduled to be removed in Guava release 15.0." + + +--- + +* [HBASE-19691](https://issues.apache.org/jira/browse/HBASE-19691) | *Critical* | **Do not require ADMIN permission for obtaining ClusterStatus** + +This change reverts an unintentional requirement for global ADMIN permission to obtain cluster status from the active HMaster. + + +--- + +* [HBASE-19486](https://issues.apache.org/jira/browse/HBASE-19486) | *Major* | ** Periodically ensure records are not buffered too long by BufferedMutator** + +The BufferedMutator now supports two settings that are used to ensure records do not stay too long in the buffer of a BufferedMutator. For periodically flushing the BufferedMutator there is now a "Timeout": "How old may the oldest record in the buffer be before we force a flush" and a "TimerTick": How often do we check if the timeout has been exceeded. Using these settings you can make the BufferedMutator automatically flush the write buffer if after the specified number of milliseconds no flush has occurred. + +This is mainly useful in streaming scenarios (i.e. writing data into HBase using Apache Flink/Beam/Storm) where it is common (especially in a test/development situation) to see small unpredictable bursts of data that need to be written into HBase. When using the BufferedMutator till now the effect was that records would remain in the write buffer until the buffer was full or an explicit flush was triggered. In practice this would mean that the 'last few records' of a burst would remain in the write buffer until the next burst arrives filling the buffer to capacity and thus triggering a flush. + + +--- + +* [HBASE-19670](https://issues.apache.org/jira/browse/HBASE-19670) | *Major* | **Workaround: Purge User API building from branch-2 so can make a beta-1** + +Disable filtering of User API based off yetus annotation done in doclet. See parent issue for build failure currently being worked on but not done in time for a beta-1. + + +--- + +* [HBASE-19282](https://issues.apache.org/jira/browse/HBASE-19282) | *Major* | **CellChunkMap Benchmarking and User Interface** + +When MSLAB is in use (that is the default config) , we will always use the CellChunkMap indexing variant for in memory flushed Immutable segments. When MSLAB is turned off, we will use CellAraryMap. These can not be changed with any configs. The in memory flush threshold been made to be default to 10% of region flush size. This can be turned using 'hbase.memstore.inmemoryflush.threshold.factor'. + + +--- + +* [HBASE-19628](https://issues.apache.org/jira/browse/HBASE-19628) | *Major* | **ByteBufferCell should extend ExtendedCell** + +ByteBufferCell → ByteBufferExtendedCell +MapReduceCell → MapReduceExtendedCell +ByteBufferChunkCell → ByteBufferChunkKeyValue +NoTagByteBufferChunkCell → NoTagByteBufferChunkKeyValue +KeyOnlyByteBufferCell → KeyOnlyByteBufferExtendedCell +TagRewriteByteBufferCell → TagRewriteByteBufferExtendedCell +ValueAndTagRewriteByteBufferCell → ValueAndTagRewriteByteBufferExtendedCell +EmptyByteBufferCell → EmptyByteBufferExtendedCell +FirstOnRowByteBufferCell → FirstOnRowByteBufferExtendedCell +LastOnRowByteBufferCell → LastOnRowByteBufferExtendedCell +FirstOnRowColByteBufferCell → FirstOnRowColByteBufferExtendedCell +FirstOnRowColTSByteBufferCell → FirstOnRowColTSByteBufferExtendedCell +LastOnRowColByteBufferCell → LastOnRowColByteBufferCell +OffheapDecodedCell → OffheapDecodedExtendedCell + + +--- + +* [HBASE-19576](https://issues.apache.org/jira/browse/HBASE-19576) | *Major* | **Introduce builder for ReplicationPeerConfig and make it immutable** + +Add a ReplicationPeerConfigBuilder to create ReplicationPeerConfig and make ReplicationPeerConfig immutable. Meanwhile, deprecated set\* methods in ReplicationPeerConfig. + + +--- + +* [HBASE-10092](https://issues.apache.org/jira/browse/HBASE-10092) | *Critical* | **Move to slf4j** + +We now have slf4j as our front-end. Be careful adding logging from here on out; make sure it slf4j. + +From here on out, as us devs go, we need to convert log messages from being 'guarded' -- i.e. surrounded by if (LOG.isDebugEnabled...) -- to instead being parameterized log messages. e.g. the latter rather than the former in the below: + +logger.debug("The new entry is "+entry+"."); +logger.debug("The new entry is {}.", entry); + +See [1] for background on perf benefits. + +Note, FATAL log level is not present in slf4j. It is noted as a Marker but won't show in logs as a LEVEL. + +1. https://www.slf4j.org/faq.html#logging\_performance + + +--- + +* [HBASE-19148](https://issues.apache.org/jira/browse/HBASE-19148) | *Blocker* | **Reevaluate default values of configurations** + +Removed unused hbase.fs.tmp.dir from hbase-default.xml. + +Upped hbase.master.fileSplitTimeout from 30s to 10minutes (suggested by production experience) + +Added note that handler-count should be ~CPU count. + +hbase.regionserver.logroll.multiplier has been changed from 0.95 to 0.5 AND the default block size has been doubled. + +A few of the core configs are now dumped to the log on startup. + + +--- + +* [HBASE-19492](https://issues.apache.org/jira/browse/HBASE-19492) | *Major* | **Add EXCLUDE\_NAMESPACE and EXCLUDE\_TABLECFS support to replication peer config** + +Add two new field: EXCLUDE\_NAMESPACE and EXCLUDE\_TABLECFS to replication peer config. + +If replicate\_all flag is true, it means all user tables will be replicated to peer cluster. Then allow config exclude namespaces or exclude table-cfs which can't be replicated to peer cluster. + +If replicate\_all flag is false, it means all user tables can't be replicated to peer cluster. Then allow to config namespaces or table-cfs which will be replicated to peer cluster. + + +--- + +* [HBASE-19494](https://issues.apache.org/jira/browse/HBASE-19494) | *Major* | **Create simple WALKey filter that can be plugged in on the Replication Sink** + +Adds means of adding very basic filter on the sink side of replication. We already have a means of installing filter source-side, which is better place to filter edits before they are shipped over the network, but this facility is needed by hbase-indexer. + +Set hbase.replication.sink.walentrysinkfilter with a no-param Constructor implementation. See test in patch for example. + + +--- + +* [HBASE-19112](https://issues.apache.org/jira/browse/HBASE-19112) | *Blocker* | **Suspect methods on Cell to be deprecated** + +Adds method Cell#getType which returns enum describing Cell Type. + +Deprecates the following Cell methods: + + getTypeByte + getSequenceId + getTagsArray + getTagsOffset + getTagsLength + +CPs trying to build cells should use RawCellBuilderFactory that supports building cells with tags. + + +--- + +* [HBASE-14790](https://issues.apache.org/jira/browse/HBASE-14790) | *Major* | **Implement a new DFSOutputStream for logging WAL only** + +Implement a FanOutOneBlockAsyncDFSOutput for writing WAL only, the WAL provider which uses this class is AsyncFSWALProvider. + +It is based on netty, and will write to 3 DNs at the same time concurrently(fan-out) so generally it will lead to a lower latency. And it is also fail-fast, the stream will become unwritable immediately after there are any read/write errors, no pipeline recovery. You need to call recoverLease to force close the output for this case. And it only supports to write a file with a single block. For WAL this is a good behavior as we can always open a new file when the old one is broken. The performance analysis in HBASE-16890 shows that it has a better performance. + +Behavior changes: +1. As now we write to 3 DNs concurrently, according to the visibility guarantee of HDFS, the data will be available immediately when arriving at DN since all the DNs will be considered as the last one in pipeline. This means replication may read uncommitted data and replicate it to the remote cluster and cause data inconsistency. HBASE-14004 is used to solve the problem. +2. There will be no sync failure. When the output is broken, we will open a new file and write all the unacked wal entries to the new file. This means that we may have duplicated entries in wal files. HBASE-14949 is used to solve this problem. + + +--- + +* [HBASE-15536](https://issues.apache.org/jira/browse/HBASE-15536) | *Critical* | **Make AsyncFSWAL as our default WAL** + +Now the default WALProvider is AsyncFSWALProvider, i.e. 'asyncfs'. +If you want to change back to use FSHLog, please add this in hbase-site.xml +{code} +\ +\hbase.wal.provider\ +\filesystem\ +\ +{code} +If you want to use FSHLog with multiwal, please add this in hbase-site.xml +{code} +\ +\hbase.wal.regiongrouping.delegate.provider\ +\filesystem\ +\ +{code} + +This patch also sets hbase.wal.async.use-shared-event-loop to false so WAL has its own netty event group. + + +--- + +* [HBASE-19462](https://issues.apache.org/jira/browse/HBASE-19462) | *Major* | **Deprecate all addImmutable methods in Put** + +Deprecates Put#addImmutable as of release 2.0.0, this will be removed in HBase 3.0.0. Use {@link #add(Cell)} and {@link org.apache.hadoop.hbase.CellBuilder} instead + + +--- + +* [HBASE-19213](https://issues.apache.org/jira/browse/HBASE-19213) | *Minor* | **Align check and mutate operations in Table and AsyncTable** + +In Table interface deprecate checkAndPut, checkAndDelete and checkAndMutate methods. +Similarly to AsyncTable a new method was added to replace the deprecated ones: CheckAndMutateBuilder checkAndMutate(byte[] row, byte[] family) with CheckAndMutateBuilder interface which can be used to construct the checkAnd\*() operations. + + +--- + +* [HBASE-19134](https://issues.apache.org/jira/browse/HBASE-19134) | *Major* | **Make WALKey an Interface; expose Read-Only version to CPs** + +Made WALKey an Interface and added a WALKeyImpl implementation. WALKey comes through to Coprocessors. WALKey is read-only. + + +--- + +* [HBASE-18169](https://issues.apache.org/jira/browse/HBASE-18169) | *Blocker* | **Coprocessor fix and cleanup before 2.0.0 release** + +Refactor of Coprocessor API for hbase2. Purged methods that exposed too much of our internals. Other hooks were recast so they no longer took or returned internal classes; instead we pass Interfaces or read-only versions of implementations. + +Here is some overview doc on changes in hbase2 for Coprocessors including detail on why the change was made: +https://github.com/apache/hbase/blob/branch-2.0/dev-support/design-docs/Coprocessor\_Design\_Improvements-Use\_composition\_instead\_of\_inheritance-HBASE-17732.adoc + + +--- + +* [HBASE-19301](https://issues.apache.org/jira/browse/HBASE-19301) | *Major* | **Provide way for CPs to create short circuited connection with custom configurations** + +Provided a way for the CP users to create a short circuitable connection with custom configs. + +createConnection(Configuration) is added to MasterCoprocessorEnvironment, RegionServerCoprocessorEnvironment and RegionCoprocessorEnvironment. + +The getConnection() method already available in these Env interfaces returns the cluster connection used by the server (which the server also uses) where as this new method will create a new connection on request. The difference from connection created using ConnectionFactory APIs is that this connection can short circuit the calls to same server avoiding the RPC paths. The connection will NOT be cached/maintained by server. That should be done the CPs. + +Be careful creating Connections out of a Coprocessor. See the javadoc on these createConnection and getConnection. + + +--- + +* [HBASE-19357](https://issues.apache.org/jira/browse/HBASE-19357) | *Major* | **Bucket cache no longer L2 for LRU cache** + +Removed cacheDataInL1 option for HCD +BucketCache is no longer the L2 for LRU on heap cache. When BC is used, data blocks will be strictly on BC only where as index/bloom blocks are on LRU L1 cache. +Config 'hbase.bucketcache.combinedcache.enabled' is removed. There is no way set combined mode = false. Means make BC as victim handler for LRU cache. +This will be one more noticeable change when one uses BucketCache in File mode. Then the system table's data block(Including the META table) will be cached in Bucket Cache files only. Plain scan from META files alone test reveal that the throughput of file mode BC is almost half only. But for META entries we have RegionLocation cache at client side connections. So this would not be a big concern in a real cluster usage. Will check more on this and probably fix even when we do tiered BucketCache. + + +--- + +* [HBASE-19430](https://issues.apache.org/jira/browse/HBASE-19430) | *Major* | **Remove the SettableTimestamp and SettableSequenceId** + +All the cells which are used in server side are of ExtendedCell now. + + +--- + +* [HBASE-19295](https://issues.apache.org/jira/browse/HBASE-19295) | *Major* | **The Configuration returned by CPEnv should be read-only.** + +CoprocessorEnvironment#getConfiguration returns a READ-ONLY Configuration. Attempts at altering the returned Configuration -- whether setting or adding resources -- will result in an IllegalStateException warning of the Read-only condition of the returned Configuration. + + +--- + +* [HBASE-19410](https://issues.apache.org/jira/browse/HBASE-19410) | *Major* | **Move zookeeper related UTs to hbase-zookeeper and mark them as ZKTests** + +There is a new HBaseZKTestingUtility which can only start a mini zookeeper cluster. And we will publish sources for test-jar for all modules. + + +--- + +* [HBASE-19323](https://issues.apache.org/jira/browse/HBASE-19323) | *Major* | **Make netty engine default in hbase2** + +NettyRpcServer is now our default RPC server replacing SimpleRpcServer. + + +--- + +* [HBASE-19426](https://issues.apache.org/jira/browse/HBASE-19426) | *Major* | **Move has() and setTimestamp() to Mutation** + +Moves #has and #setTimestamp back up to Mutation from the subclass Put so available to other Mutation implementations. + + +--- + +* [HBASE-19384](https://issues.apache.org/jira/browse/HBASE-19384) | *Critical* | **Results returned by preAppend hook in a coprocessor are replaced with null from other coprocessor even on bypass** + +When a coprocessor sets 'bypass', we will skip calling subsequent Coprocessors that may be stacked-up on the method invocation; e.g. if a prePut has three coprocessors hooked up, if the first coprocessor decides to set 'bypass', we will not call the two subsequent coprocessors (this is similar to the 'complete' functionality that was in hbase1, removed in hbase2). + + +--- + +* [HBASE-19408](https://issues.apache.org/jira/browse/HBASE-19408) | *Trivial* | **Remove WALActionsListener.Base** + +1) remove the WALActionsListener.Base +2) provide default method implementation to WALActionsListener +The person who want to receive the notification of WAL events should implements the WALActionsListener rather than WALActionsListener.Base. + + +--- + +* [HBASE-19339](https://issues.apache.org/jira/browse/HBASE-19339) | *Critical* | **Eager policy results in the negative size of memstore** + +Enable TestAcidGuaranteesWithEagerPolicy and TestAcidGuaranteesWithAdaptivePolicy + + +--- + +* [HBASE-19336](https://issues.apache.org/jira/browse/HBASE-19336) | *Major* | **Improve rsgroup to allow assign all tables within a specified namespace by only writing namespace** + +Add two new shell cmd. +move\_namespaces\_rsgroup is used to reassign tables of specified namespaces from one RegionServer group to another. +move\_servers\_namespaces\_rsgroup is used to reassign regionServers and tables of specified namespaces from one group to another. + + +--- + +* [HBASE-19285](https://issues.apache.org/jira/browse/HBASE-19285) | *Critical* | **Add per-table latency histograms** + +Per-RegionServer table latency histograms have been returned to HBase (after being removed due to impacting performance). These metrics are exposed via a new JMX bean "TableLatencies" with the typical naming conventions: namespace, table, and histogram component. + + +--- + +* [HBASE-19359](https://issues.apache.org/jira/browse/HBASE-19359) | *Major* | **Revisit the default config of hbase client retries number** + +The default value of hbase.client.retries.number was 35. It is now 10. +And for server side, the default hbase.client.serverside.retries.multiplier was 10. So the server side retries number was 35 \* 10 = 350. It is now 3. + + +--- + +* [HBASE-18090](https://issues.apache.org/jira/browse/HBASE-18090) | *Major* | **Improve TableSnapshotInputFormat to allow more multiple mappers per region** + +In this task, we make it possible to run multiple mappers per region in the table snapshot. The following code is primary table snapshot mapper initializatio: + +TableMapReduceUtil.initTableSnapshotMapperJob( + snapshotName, // The name of the snapshot (of a table) to read from + scan, // Scan instance to control CF and attribute selection + mapper, // mapper + outputKeyClass, // mapper output key + outputValueClass, // mapper output value + job, // The current job to adjust + true, // upload HBase jars and jars for any of the configured job classes via the distributed cache (tmpjars) + restoreDir, // a temporary directory to copy the snapshot files into +); + +The job only run one map task per region in the table snapshot. With this feature, client can specify the desired num of mappers when init table snapshot mapper job： + +TableMapReduceUtil.initTableSnapshotMapperJob( + snapshotName, // The name of the snapshot (of a table) to read from + scan, // Scan instance to control CF and attribute selection + mapper, // mapper + outputKeyClass, // mapper output key + outputValueClass, // mapper output value + job, // The current job to adjust + true, // upload HBase jars and jars for any of the configured job classes via the distributed cache (tmpjars) + restoreDir, // a temporary directory to copy the snapshot files into + splitAlgorithm, // splitAlgo algorithm to split, current split algorithms support RegionSplitter.UniformSplit() and RegionSplitter.HexStringSplit() + n // how many input splits to generate per one region +); + + +--- + +* [HBASE-19035](https://issues.apache.org/jira/browse/HBASE-19035) | *Major* | **Miss metrics when coprocessor use region scanner to read data** + +1. Move read requests count to region level. Because RegionScanner is exposed to CP. +2. Update write requests count in processRowsWithLocks. +3. Remove requestRowActionCount in RSRpcServices. This metric can be computed by region's readRequestsCount and writeRequestsCount. + + +--- + +* [HBASE-19318](https://issues.apache.org/jira/browse/HBASE-19318) | *Critical* | **MasterRpcServices#getSecurityCapabilities explicitly checks for the HBase AccessController implementation** + +Fixes an issue with loading customer coprocessor endpoint implementations inside of the HBase Master which breaks Apache Ranger. + + +--- + +* [HBASE-19092](https://issues.apache.org/jira/browse/HBASE-19092) | *Critical* | **Make Tag IA.LimitedPrivate and expose for CPs** + +This JIRA aims at exposing Tags for Coprocessor usage. +Tag interface is now exposed to Coprocessors and CPs can make use of this interface to create their own Tags. +RawCell is a new interface that is a subtype of Cell and that is exposed to CPs. RawCell has the following APIs + +List\ getTags() +Optional\ getTag(byte type) +byte[] cloneTags() + +The above APIs helps to read tags from the Cell. + +CellUtil#createCell(Cell cell, List\ tags) +CellUtil#createCell(Cell cell, byte[] tags) +CellUtil#createCell(Cell cell, byte[] value, byte[] tags) +are deprecated. +If CPs want to create a cell with Tags they can use the RegionCoprocessorEnvironment#getCellBuilder() that returns an ExtendedCellBuilder. +Using ExtendedCellBuilder the CP can create Cells with Tags. Other helper methods to work on Tags are available as static APIs in Tag interface. + + +--- + +* [HBASE-19266](https://issues.apache.org/jira/browse/HBASE-19266) | *Minor* | **TestAcidGuarantees should cover adaptive in-memory compaction** + +separate the TestAcidGuarantees by the policy: +1) NONE -\> TestAcidGuaranteesWithNoInMemCompaction +2) BASIC -\> TestAcidGuaranteesWithBasicPolicy +3) EAGER -\> TestAcidGuaranteesWithEagerPolicy +4) ADAPTIVE -\> TestAcidGuaranteesWithAdaptivePolicy + +TestAcidGuaranteesWithEagerPolicy and TestAcidGuaranteesWithAdaptivePolicy are disabled by default as the eager policy may cause the negative size of memstore. + + +--- + +* [HBASE-16868](https://issues.apache.org/jira/browse/HBASE-16868) | *Critical* | **Add a replicate\_all flag to avoid misuse the namespaces and table-cfs config of replication peer** + +Add a replicate\_all flag to replication peer config. The default value is true, which means all user tables (REPLICATION\_SCOPE != 0 ) will be replicated to peer cluster. + +How to config a peer from replicate all to only replicate special namespace/tablecfs? +Step1. Add a new peer with no namespace/tablecfs config, the replicate\_all flag will be true automatically. +Step2. User want only replicate some namespaces or tables, so set replicate\_all flag to false first. +Step3. Add special namespaces or table-cfs config to the replication peer. + +How to config a peer from replicate special namespace/tablecfs to replicate all? +Step1. Add a new peer with special namespace/tablecfs config, the replicate\_all flag will be false automatically. +Step2. User want replicate all user tables, so remove the special namespace/tablecfs config first. +Step3. Set replicate\_all flag to true. + +How to config replicate nothing? +Set replicate\_all flag to false and no namespace/tablecfs config, then all tables cannot be replicated to peer cluster. + + +--- + +* [HBASE-19122](https://issues.apache.org/jira/browse/HBASE-19122) | *Critical* | **preCompact and preFlush can bypass by returning null scanner; shut it down** + +Remove the ability to 'bypass' preFlush and preCompact by returning a null Scanner. Bypass is disallowed on these methods in hbase2. + + +--- + +* [HBASE-19200](https://issues.apache.org/jira/browse/HBASE-19200) | *Major* | **make hbase-client only depend on ZKAsyncRegistry and ZNodePaths** + +ConnectionImplementation now uses asynchronous connections to zookeeper via ZKAsyncRegistry to get cluster id, master address, meta region location, etc. +Since ZKAsyncRegistry uses curator framework, this change purges a lot of zookeeper dependencies in hbase-client. +Now hbase-client only depends on only ZKAsyncRegistry, ZNodePaths and the newly introduced ZKMetadata. + + +--- + +* [HBASE-19311](https://issues.apache.org/jira/browse/HBASE-19311) | *Major* | **Promote TestAcidGuarantees to LargeTests and start mini cluster once to make it faster** + +Introduce a AcidGuaranteesTestTool and expose as tool instead of TestAcidGuarantees. Now TestAcidGuarantees is just a UT. + + +--- + +* [HBASE-19293](https://issues.apache.org/jira/browse/HBASE-19293) | *Major* | **Support adding a new replication peer in disabled state** + +Add a boolean parameter which means the new replication peer's state is enabled or disabled for Admin/AsyncAdmin's addReplicationPeer method. Meanwhile, you can use shell cmd to add a enabled/disabled replication peer. The STATE parameter is optional and the default state is enabled. + +hbase\> add\_peer '1', CLUSTER\_KEY =\> "server1.cie.com:2181:/hbase", STATE =\> "ENABLED" +hbase\> add\_peer '1', CLUSTER\_KEY =\> "server1.cie.com:2181:/hbase", STATE =\> "DISABLED" + + +--- + +* [HBASE-19123](https://issues.apache.org/jira/browse/HBASE-19123) | *Major* | **Purge 'complete' support from Coprocesor Observers** + +This issue removes the 'complete' facility that was in ObserverContext. It is no longer possible for a Coprocessor to cut the chain-of-invocation and insist its response prevails. + + +--- + +* [HBASE-18911](https://issues.apache.org/jira/browse/HBASE-18911) | *Major* | **Unify Admin and AsyncAdmin's methods name** + +Deprecated 4 methods for Admin interface. +Deprecated compactRegionServer(ServerName, boolean). Use compactRegionServer(ServerName) and majorCompactcompactRegionServer(ServerName) instead. +Deprecated getRegionLoad(ServerName) method. Use getRegionLoads(ServerName) instead. +Deprecated getRegionLoad(ServerName, TableName) method. Use getRegionLoads(ServerName, TableName) instead. +Deprecated getQuotaRetriever(QuotaFilter) instead. Use getQuota(QuotaFilter) instead. + +Add 7 methods for Admin interface. +ServerName getMaster(); +Collection\ getBackupMasters(); +Collection\ getRegionServers(); +boolean splitSwitch(boolean enabled, boolean synchronous); +boolean mergeSwitch(boolean enabled, boolean synchronous); +boolean isSplitEnabled(); +boolean isMergeEnabled(); + + +--- + +* [HBASE-18703](https://issues.apache.org/jira/browse/HBASE-18703) | *Critical* | **Inconsistent behavior for preBatchMutate in doMiniBatchMutate and processRowsWithLocks** + +Two write paths Region.batchMutate() and Region.mutateRows() are unified and inconsistencies are resolved. + + +--- + +* [HBASE-18964](https://issues.apache.org/jira/browse/HBASE-18964) | *Major* | **Deprecate RowProcessor and processRowsWithLocks() APIs that take RowProcessor as an argument** + +RowProcessor and Region#processRowsWithLocks() methods that take RowProcessor as an argument are deprecated. Use Coprocessors if you want to customize handling. + + +--- + +* [HBASE-19251](https://issues.apache.org/jira/browse/HBASE-19251) | *Major* | **Merge RawAsyncTable and AsyncTable** + +Merge the RawAsyncTable and AsyncTable interfaces. Use generic to reflection the difference between the observer style scan API. For the implementation which does not have a user specified thread pool, the observer is AdvancedScanResultConsumer. For the implementation which needs a user specified thread pool, the observer is ScanResultConsumer. + + +--- + +* [HBASE-19262](https://issues.apache.org/jira/browse/HBASE-19262) | *Major* | **Revisit checkstyle rules** + +Change the import order rule that now we should put the shaded import at bottom. Ignore the VisibilityModifier warnings for test code. + + +--- + +* [HBASE-19187](https://issues.apache.org/jira/browse/HBASE-19187) | *Minor* | **Remove option to create on heap bucket cache** + +Removing the on heap Bucket cache feature. +The config "hbase.bucketcache.ioengine" no longer support the 'heap' value. +Its supported values now are 'offheap', 'file:\', 'files:\' and 'mmap:\' + + +--- + +* [HBASE-12350](https://issues.apache.org/jira/browse/HBASE-12350) | *Minor* | **Backport error-prone build support to branch-1 and branch-2** + +This change introduces compile time support for running the error-prone suite of static analyses. Enable with -PerrorProne on the Maven command line. Requires JDK 8 or higher. (Don't enable if building with JDK 7.) + + +--- + +* [HBASE-14350](https://issues.apache.org/jira/browse/HBASE-14350) | *Blocker* | **Procedure V2 Phase 2: Assignment Manager** + +(Incomplete) + += Incompatbiles + +== Coprocessor Incompatibilities + +Split/Merge have moved to the Master; it runs them now. Means hooks around Split/Merge are now noops. To intercept Split/Merge phases, CPs need to intercept on MasterObserver. + + +--- + +* [HBASE-19189](https://issues.apache.org/jira/browse/HBASE-19189) | *Major* | **Ad-hoc test job for running a subset of tests lots of times** + + + + +Folks can now test out tests on an arbitrary release branch. Head over to [builds.a.o job "HBase-adhoc-run-tests"](https://builds.apache.org/view/H-L/view/HBase/job/HBase-adhoc-run-tests/), then pick "Build with parameters". +Tests are specified as just names e.g. TestLogRollingNoCluster. can also be a glob. e.g. TestHFile* + + +--- + +* [HBASE-19220](https://issues.apache.org/jira/browse/HBASE-19220) | *Major* | **Async tests time out talking to zk; 'clusterid came back null'** + +Changed retries from 3 to 30 for zk initial connect for registry. + + +--- + +* [HBASE-19002](https://issues.apache.org/jira/browse/HBASE-19002) | *Minor* | **Introduce more examples to show how to intercept normal region operations** + +With the change in Coprocessor APIs, the hbase-examples module has been updated to provide additional examples that show how to write Coprocessors against the new API. + + +--- + +* [HBASE-18961](https://issues.apache.org/jira/browse/HBASE-18961) | *Major* | **doMiniBatchMutate() is big, split it into smaller methods** + +HRegion.batchMutate()/ doMiniBatchMutate() is refactored with aim to unify batchMutate() and mutateRows() code paths later. batchMutate() currently handles 2 types of batches: MutationBatchOperations and ReplayBatchOperations. Common base class BatchOperations is augmented with common methods which are overridden in derived classes as needed. doMiniBatchMutate() is implemented using common methods in base class BatchOperations. + + +--- + +* [HBASE-19103](https://issues.apache.org/jira/browse/HBASE-19103) | *Minor* | **Add BigDecimalComparator for filter** + +If BigDecimal is stored as value, and you need to add a matched comparator to the value filter when scanning, a BigDecimalComparator can be used. + + +--- + +* [HBASE-19111](https://issues.apache.org/jira/browse/HBASE-19111) | *Critical* | **Add missing CellUtil#isPut(Cell) methods** + +A new public API method was added to CellUtil "isPut(Cell)" for clients to use to determine if the Cell is for a Put operation. + +Additionally, other CellUtil API calls which expose Cell-implementation were marked as deprecated and will be removed in a future version. + + +--- + +* [HBASE-19160](https://issues.apache.org/jira/browse/HBASE-19160) | *Critical* | **Re-expose CellComparator** + +CellComparator is now InterfaceAudience.Public + + +--- + +* [HBASE-19131](https://issues.apache.org/jira/browse/HBASE-19131) | *Major* | **Add the ClusterStatus hook and cleanup other hooks which can be replaced by ClusterStatus hook** + +1) Add preGetClusterStatus() and postGetClusterStatus() hooks +2) add preGetClusterStatus() to access control check - an admin action + + +--- + +* [HBASE-19095](https://issues.apache.org/jira/browse/HBASE-19095) | *Major* | **Add CP hooks in RegionObserver for in memory compaction** + +Add 4 methods in RegionObserver: +preMemStoreCompaction +preMemStoreCompactionCompactScannerOpen +preMemStoreCompactionCompact +postMemStoreCompaction +preMemStoreCompaction and postMemStoreCompaction will always be called for all in memory compactions. Under eager mode, preMemStoreCompactionCompactScannerOpen will be called before opening store scanner to allow you changing the max versions and TTL, and preMemStoreCompactionCompact will be called after the creation to let you do wrapping. + + +--- + +* [HBASE-19152](https://issues.apache.org/jira/browse/HBASE-19152) | *Trivial* | **Update refguide 'how to build an RC' and the make\_rc.sh script** + +The make\_rc.sh script can run an hbase2 build now generating tarballs and pushing up to maven repository. TODO: Sign and checksum, check tarball, push to apache dist..... + + +--- + +* [HBASE-19179](https://issues.apache.org/jira/browse/HBASE-19179) | *Critical* | **Remove hbase-prefix-tree** + +Purged the hbase-prefix-tree module and all references from the code base. + +prefix-tree data block encoding was a super cool experimental feature that saw some usage initially but has since languished. If interested in carrying this sweet facility forward, write the dev list and we'll restore this module. + + +--- + +* [HBASE-19176](https://issues.apache.org/jira/browse/HBASE-19176) | *Major* | **Remove hbase-native-client from branch-2** + +Removed the hbase-native-client module from branch-2 (it is still in Master). It is not complete. Look for a finished C++ client in the near future. Will restore native client to branch-2 at that point. + + +--- + +* [HBASE-19144](https://issues.apache.org/jira/browse/HBASE-19144) | *Major* | **[RSgroups] Retry assignments in FAILED\_OPEN state when servers (re)join the cluster** + +When regionserver placement groups (RSGroups) is active, as servers join the cluster the Master will attempt to reassign regions in FAILED\_OPEN state. + + +--- + +* [HBASE-18770](https://issues.apache.org/jira/browse/HBASE-18770) | *Critical* | **Remove bypass method in ObserverContext and implement the 'bypass' logic case by case** + +Removes blanket bypass mechanism (Observer#bypass). Instead, a curated subset of methods are bypassable. + + Changes Coprocessor ObserverContext 'bypass' semantic. We flip the + default so bypass is NOT supported on Observer invocations; only a + couple of preXXX methods in RegionObserver allow it: e.g. preGet + and prePut but not preFlush, etc. Everywhere else, we throw + a Exception if a Coprocessor Observer tries to invoke bypass. Master + Observers can no longer stop or change move, split, assign, create table, etc. + preBatchMutate can no longer be bypassed (bypass the finer-grained + prePut, preDelete, etc. instead) + + Ditto on complete, the mechanism that allowed a Coprocessor + rule that all subsequent Coprocessors are skipped in an + invocation chain; now, complete is only available to + bypassable methods (and Coprocessors will get an exception if + they try to 'complete' when it is not allowed). + + See javadoc for whether a Coprocessor Observer method supports + 'bypass'. If no mention, 'bypass' is NOT supported. + +The below methods have been marked deprecated in hbase2. We would have liked to have removed them because they use IA.Private parameters but they are in use by CoreCoprocessors or are critical to downstreamers and we have no alternatives to provide currently. + +@Deprecated public boolean prePrepareTimeStampForDeleteVersion(final Mutation mutation, final Cell kv, final byte[] byteNow, final Get get) throws IOException { + +@Deprecated public boolean preWALRestore(final RegionInfo info, final WALKey logKey, final WALEdit logEdit) throws IOException { + +@Deprecated public void postWALRestore(final RegionInfo info, final WALKey logKey, final WALEdit logEdit) throws IOException { + +@Deprecated public DeleteTracker postInstantiateDeleteTracker(DeleteTracker result) throws IOException + +Metrics are updated now even if the Coprocessor does a bypass; e.g. The put count is updated even if a Coprocessor bypasses the core put operation (We do it this way so no need for Coprocessors to have access to our core metrics system). + + +--- + +* [HBASE-19033](https://issues.apache.org/jira/browse/HBASE-19033) | *Blocker* | **Allow CP users to change versions and TTL before opening StoreScanner** + +Add back the three methods without a return value: +preFlushScannerOpen +preCompactScannerOpen +preStoreScannerOpen + +Introduce a ScanOptions interface to let CP users change the max versions and TTL of a ScanInfo. It will be passed as a parameter in the three methods above. + +Inntroduce a new example WriteHeavyIncrementObserver which convert increment to put and do aggregating when get. It uses the above three methods. + + +--- + +* [HBASE-19110](https://issues.apache.org/jira/browse/HBASE-19110) | *Minor* | **Add default for Server#isStopping & #getFileSystem** + +Made defaults for Server#isStopping and Server#getFileSystem. Should have done this when I added them (lesson learned, was actually mentioned in a review). + + +--- + +* [HBASE-19047](https://issues.apache.org/jira/browse/HBASE-19047) | *Critical* | **CP exposed Scanner types should not extend Shipper** + +RegionObserver#preScannerOpen signature changed +RegionScanner preScannerOpen( ObserverContext\ c, Scan scan, RegionScanner s) -\> void preScannerOpen( ObserverContext\ c, Scan scan) +The pre hook can no longer return a RegionScanner instance. + + +--- + +* [HBASE-18995](https://issues.apache.org/jira/browse/HBASE-18995) | *Critical* | **Move methods that are for internal usage from CellUtil to Private util class** + +Split CellUtil into public CellUtil and PrivateCellUtil for Internal use only. + + +--- + +* [HBASE-18906](https://issues.apache.org/jira/browse/HBASE-18906) | *Critical* | **Provide Region#waitForFlushes API** + +Provided an API in Region (Exposed to CPs) +boolean waitForFlushes(long timeout) +This call will make the current thread to be waiting for all flushes in this region to be finished. (Upto the time out time being specified). The boolean return value specify whether the flushes are really over or the time out being elapsed. Return false when timeout elapsed but flushes are not over or true when flushes are over + + +--- + +* [HBASE-18905](https://issues.apache.org/jira/browse/HBASE-18905) | *Major* | **Allow CPs to request flush on Region and know the completion of the requested flush** + +Add a FlushLifeCycleTracker which is similiar to CompactionLifeCycleTracker for tracking flush. +Add a requestFlush method in Region interface to let CP users request flush on a region. The operation is asynchronous, you need to use the FlushLifeCycleTracker to track the flush. +The difference with CompactionLifeCycleTracker is that, flush is per region so we do not use Store as a parameter of the methods. And also, notExecuted means the whole flush has not been executed, and afterExecution means the whole flush has been finished, so we do not have a separated completed method. A flush will be ended either by notExecuted or afterExecution. + + +--- + +* [HBASE-19048](https://issues.apache.org/jira/browse/HBASE-19048) | *Major* | **Cleanup MasterObserver hooks which takes IA private params** + +Purged InterfaceAudience.Private parameters from methods in MasterObserver. + +preAbortProcedure no longer takes a ProcedureExecutor. + +postGetProcedures no longer takes a list of Procedures. + +postGetLocks no longer takes a list of locks. + +preRequestLock and postRequestLock no longer take lock type. + +preLockHeartbeat and postLockHeartbeat no longer takes a lock procedure. + +The implication is that that the Coprocessors that depended on these params have had to coarsen so for example, the AccessController can not do access per Procedure or Lock but rather, makes a judgement on the general access (You'll need to be ADMIN to see list of procedures and locks). + + +--- + +* [HBASE-18994](https://issues.apache.org/jira/browse/HBASE-18994) | *Major* | **Decide if META/System tables should use Compacting Memstore or Default Memstore** + +Added a new config 'hbase.systemtables.compacting.memstore.type" for the system tables. By default all the system tables will have 'NONE' as the type and so it will be using the default memstore by default. +{code} + \ + \hbase.systemtables.compacting.memstore.type\ + \NONE\ + \ +{code} + + +--- + +* [HBASE-19029](https://issues.apache.org/jira/browse/HBASE-19029) | *Critical* | **Align RPC timout methods in Table and AsyncTableBase** + +Deprecate the following methods in Table: +- int getRpcTimeout() +- int getReadRpcTimeout() +- int getWriteRpcTimeout() +- int getOperationTimeout() + +Add the following methods to Table: +- long getRpcTimeout(TimeUnit) +- long getReadRpcTimeout(TimeUnit) +- long getWriteRpcTimeout(TimeUnit) +- long getOperationTimeout(TimeUnit) + +Add missing deprecation tag for long getRpcTimeout(TimeUnit unit) in AsyncTableBase + + +--- + +* [HBASE-18410](https://issues.apache.org/jira/browse/HBASE-18410) | *Major* | **FilterList Improvement.** + +In this task, we fixed all existing bugs in FilterList, and did the code refactor which ensured interface compatibility . + +The primary bug fixes are : +1. For sub-filter in FilterList with MUST\_PASS\_ONE, if previous filterKeyValue() of sub-filter returns NEXT\_COL, we cannot make sure that the next cell will be the first cell in next column, because FilterList choose the minimal forward step among sub-filters, and it may return a SKIP. so here we add an extra check to ensure that the next cell will match preivous return code for sub-filters. +2. Previous logic about transforming cell of FilterList is incorrect, we should set the previous transform result (rather than the given cell in question) as the initial vaule of transform cell before call filterKeyValue() of FilterList. +3. Handle the ReturnCodes which the previous code did not handle. + +About code refactor, we divided the FilterList into two separated sub-classes: FilterListWithOR and FilterListWithAND, The FilterListWithOR has been optimised to choose the next minimal step to seek cell rather than SKIP cell one by one, and the FilterListWithAND has been optimised to choose the next maximal key to seek among sub-filters in filter list. All in all, The code in FilterList is clean and easier to follow now. + +Note that ReturnCode NEXT\_ROW has been redefined as skipping to next row in current family, not to next row in all family. it’s more reasonable, because ReturnCode is a concept in store level, not in region level. + +Another bug that needs attention is: filterAllRemaining() in FilterList with MUST\_PASS\_ONE will now return false if the filter list is empty whereas earlier it used to return true for Operator.MUST\_PASS\_ONE. it's more reasonable now. + + +--- + +* [HBASE-19077](https://issues.apache.org/jira/browse/HBASE-19077) | *Critical* | **Have Region\*CoprocessorEnvironment provide an ImmutableOnlineRegions** + +Adds getOnlineRegions to the RegionCoprocessorEnvironment (Context) and ditto to RegionServerCoprocessorEnvironment. Allows Coprocessor get list of Regions online on the currently hosting RegionServer. + + +--- + +* [HBASE-19021](https://issues.apache.org/jira/browse/HBASE-19021) | *Critical* | **Restore a few important missing logics for balancer in 2.0** + +Re-enabled 'hbase.master.loadbalance.bytable', default 'false'. +Draining servers are removed from consideration by blancer.balanceCluster() call. + + +--- + +* [HBASE-19049](https://issues.apache.org/jira/browse/HBASE-19049) | *Major* | **Update kerby to 1.0.1 GA release** + +HBase now relies on Kerby version 1.0.1 for its test environment. No downstream facing change is expected. + + +--- + +* [HBASE-16290](https://issues.apache.org/jira/browse/HBASE-16290) | *Major* | **Dump summary of callQueue content; can help debugging** + +Patch to print summary of call queues by size and count. This is displayed on the debug dump page of region server UI + + +--- + +* [HBASE-18846](https://issues.apache.org/jira/browse/HBASE-18846) | *Major* | **Accommodate the hbase-indexer/lily/SEP consumer deploy-type** + +Makes it so hbase-indexer/lily can move off dependence on internal APIs and instead move to public APIs. + +Adds being able to disable near-all HRegionServer services. This along with an existing plugin mechanism which allows configuring the RegionServer to host an alternate Connection implementation, makes it so we can put up a cluster of hollowed-out HRegionServers purposed to pose as a Replication Sink for a source HBase Cluster (Users do not need to figure our RPC, our PB encodings, build a distributed service, etc.). In the alternate supplied Connection implementation, hbase-indexer would install its own code to catch the Replication. + +Below and attached are sample hbase-server.xml files and alternate Connection implementations. To start up an HRegionServer as a sink, first make sure there is a ZooKeeper ensemble we can talk to. If none, just start one: +{code} +./bin/hbase-daemon.sh start zookeeper +{code} + +To start up a single RegionServer, put in place the below sample hbase-site.xml and a derviative of the below IndexerConnection on the CLASSPATH, and then start the RegionServer: +{code} +./bin/hbase-daemon.sh start org.apache.hadoop.hbase.regionserver.HRegionServer +{code} +Stdout and Stderr will go into files under configured logs directory. Browse to localhost:16030 to find webui (unless disabled). + +DETAILS + +This patch adds configuration to disable RegionServer internal Services, Managers, Caches, etc., starting up. + +By default a RegionServer starts up an Admin and Client Service. To disable either or both, use the below booleans: +{code} +hbase.regionserver.admin.service +hbase.regionserver.client.service +{code} + +Both default true. + +To make a HRegionServer startup and stay up without expecting to communicate with a master, set the below boolean to false: + +{code} +hbase.masterless +{code] +Default is false. + +h3. Sample hbase-site.xml that disables internal HRegionServer Services +Below is an example hbase-site.xml that turns off most Services and that then installs an alternate Connection implementation, one that is nulled out in all regards except in being able to return a "Table" that can catch a Replication Stream in its {code}batch(List\ actions, Object[] results){code} method. i.e. what the hbase-indexer wants. I also add the example alternate Connection implementation below (both of these files are also attached to this issue). Expects there to be an up and running zookeeper ensemble. + +{code} +\ + \ + + +Standalone clusters and minicluster instances can now configure the session timeout for our embedded ZooKeeper quorum using `hbase.zookeeper.property.minSessionTimeout` and `hbase.zookeeper.property.maxSessionTimeout`. + + +--- + +* [HBASE-15806](https://issues.apache.org/jira/browse/HBASE-15806) | *Critical* | **An endpoint-based export tool** + +org.apache.hadoop.hbase.coprocessor.Export +Instructs HBase to dump the contents of table to HDFS in a sequence file ++ replaces MR by endpoint (see org.apache.hadoop.hbase.mapreduce.Export) ++ no large data to be transfered between hbase server and client ++ same command line as org.apache.hadoop.hbase.mapreduce.Export +- user needs to alter table for deploying ExportEndpoint +- user needs to adjust the endpoint timeout for dumping large data +- user needs to get the EXECUTE permission + + +--- + +* [HBASE-18577](https://issues.apache.org/jira/browse/HBASE-18577) | *Critical* | **shaded client includes several non-relocated third party dependencies** + + + + +The HBase shaded artifacts (hbase-shaded-client and hbase-shaded-server) no longer contain several non-relocated third party dependency classes that were mistakenly included. Downstream users who relied on these classes being present will need to add a runtime dependency onto an appropriate third party artifact. + +Previously, we erroneously packaged several third party libs without relocating them. In some cases these libraries have now been relocated; in some cases they are no longer included at all. + +Includes: + +* jaxb +* jetty +* jersey +* codahale metrics (HBase 1.4+ only) +* commons-crypto +* jets3t +* junit +* curator (HBase 1.4+) +* netty 3 (HBase 1.1) +* mokito-junit4 (HBase 1.1) + +There is now testing to ensure that the shaded artifacts only contain expected relocated content. It can be run via `mvn -Dtest=noUnitTests -pl hbase-shaded/hbase-shaded-check-invariants -am -Prelease verify`. + +For version 2.0+ this patch removes hadoop-mapreduce-client-core from the set of dependencies included for the hbase-client and hbase-shaded-client artifacts. + +For 2.0+, the slf4j-log4j12 dependency is now optional for both shaded artifacts. + + +--- + +* [HBASE-14745](https://issues.apache.org/jira/browse/HBASE-14745) | *Blocker* | **Shade the last few dependencies in hbase-shaded-client** + +Previously some dependencies in hbase-shaded-client were still leaking into the un-shaded namespace. This should now be fixed. + +Additionally the rat checking on generated intermediate files from shading should be skipped. + + +--- + +* [HBASE-18665](https://issues.apache.org/jira/browse/HBASE-18665) | *Critical* | **ReversedScannerCallable invokes getRegionLocations incorrectly** + +Performing reverse scan on tables used the meta cache incorrectly and fetched data from meta table every time. This fix solves this issue and which results in performance improvement for reverse scans. + + +--- + +* [HBASE-3935](https://issues.apache.org/jira/browse/HBASE-3935) | *Major* | **HServerLoad.storefileIndexSizeMB should be changed to storefileIndexSizeKB** + +This patch removed the storefile\_index\_size\_MB in protobuf. It will cause the value of storefile\_index\_size\_MB is zero if user still use hbase-client 1.x. + + +--- + +* [HBASE-18640](https://issues.apache.org/jira/browse/HBASE-18640) | *Major* | **Move mapreduce out of hbase-server into separate hbase-mapreduce module** + +- Moves all org.apache.hadoop.hbase.mapreduce.\* (except LoadIncrementalHFiles) and org.apache.hadoop.hbase.mapred.\* classes from hbase-server module to new hbase-mapreduce module. +- Also moves following tools from hbase-server module to hbase-mapreduce module: CompactionTool, ExportSnapshot, PerformanceEvaluation, LoadTestTool +- Very minor breakages in LoadTestTool(LimitedPrivate HBaseInterfaceAudience.TOOLS) + + +--- + +* [HBASE-18519](https://issues.apache.org/jira/browse/HBASE-18519) | *Major* | **Use builder pattern to create cell** + +Introduce the CellBuilder helper. +1) Using CellBuilderFactory to get CellBuilder for creating cell with row, + column, qualifier, type, and value. +2) For internal use, the ExtendedCellBuilder, which is created by ExtendedCellBuilderFactory, is able to build cell with extra fields - sequence id and tags - + + +--- + +* [HBASE-18448](https://issues.apache.org/jira/browse/HBASE-18448) | *Minor* | **EndPoint example for refreshing HFiles for stores** + +Adds a new RefreshHFiles Coprocessor Endpoint example. Includes client and serverside-endpoint that iterates region Stores to call #refreshStoreFiles. + + +--- + +* [HBASE-18658](https://issues.apache.org/jira/browse/HBASE-18658) | *Major* | **Purge hokey hbase Service implementation; use (internal) Guava Service instead** + +Removed hbase Service class. It was not fully-formed. Now Guava is relocated, use its Service instead internally; it has nice implementation facility too in AbstractService. + + +--- + +* [HBASE-15982](https://issues.apache.org/jira/browse/HBASE-15982) | *Blocker* | **Interface ReplicationEndpoint extends Guava's Service** + + Breaking change to our ReplicationEndpoint and BaseReplicationEndpoint. + + ReplicationEndpoint implemented Guava 0.12 Service. An abstract + subclass, BaseReplicationEndpoint, provided default implementations + and facility, among other things, by extending Guava's + AbstractService class. + + Both of these HBase classes were marked LimitedPrivate for + REPLICATION so these classes were semi-public and made it so + Guava 0.12 was part of our API. + + Having Guava in our API was a mistake. It anchors us and the + implementation of the Interface to Guava 0.12. This is untenable + given Guava changes and that the Service Interface in particular + has had extensive revamp and improvement done. We can't hold to + the Guava Interface. It changed. We can't stay on Guava 0.12; + implementors and others on our CLASSPATH won't abide being stuck + on an old Guava. + + So we make breaking changes. The unhitching of our Interface + from Guava could only be done in a breaking manner. It undoes the + LimitedPrivate on BaseReplicationEndpoint while keeping it for the RE + Interface. It means consumers will have to copy/paste the + AbstractService-based BRE into their own codebase also supplying their + own Guava; HBase no longer 'supplies' this (our Guava usage has + been internalized, relocated). + + This patch then adds into RE the basic methods RE needs of the old + Guava Service rather than return a Service to start/stop only to go + back to the RE instance to do actual work. A few method names had to + be changed so could make implementations with Guava Service internally + and not have RE method names and types clash). Semantics remained the + same otherwise. For example startAsync and stopAsync in Guava are start + and stop in RE. + + +--- + +* [HBASE-18347](https://issues.apache.org/jira/browse/HBASE-18347) | *Major* | **Implement a BufferedMutator for async client** + +Introduce an AsyncBufferedMutator for batching requests to HBase for a single table. + +Use AsyncConnection.getBufferedMutator method to get an AsyncBufferedMutator instance. + + +--- + +* [HBASE-18546](https://issues.apache.org/jira/browse/HBASE-18546) | *Critical* | **Always overwrite the TS for Append/Increment unless no existing cells are found** + +If there is no existing cell in submitting Append/Increment, the custom ts won't be overridden. By contrast, the cell's ts will always be overridden by server. + + +--- + +* [HBASE-18224](https://issues.apache.org/jira/browse/HBASE-18224) | *Critical* | **Upgrade jetty** + +Moved from Jetty 9.3.x to 9.4.x. + +Jetty returns more correct HTTP code when Header is too long, 431 instead of 413, and it requires more threads to start up (made default 16 instead of 10). + + +--- + +* [HBASE-17442](https://issues.apache.org/jira/browse/HBASE-17442) | *Critical* | **Move most of the replication related classes from hbase-client to hbase-replication package** + +Move replication implementation's classes from hbase-client to hbase-replication package. + + +--- + +* [HBASE-18653](https://issues.apache.org/jira/browse/HBASE-18653) | *Major* | **Undo hbase2 check against \< hadoop2.6.x; i.e. implement agreed drop of hadoop 2.4 and 2.5 support in hbase2** + +Change the yetus profile for branch-2 so it no longer runs hadoop 2.4.x and 2.5.x build checks. + + +--- + +* [HBASE-18630](https://issues.apache.org/jira/browse/HBASE-18630) | *Major* | **Prune dependencies; as is branch-2 has duplicates** + +Removed doubled instances of javax.inject and commons-beanutils where the versions were close. + +Other instances of 'double' includes have different groupids so wary pruning especially when transitive includes (hadoop or jetty et al.) + + +--- + +* [HBASE-18631](https://issues.apache.org/jira/browse/HBASE-18631) | *Minor* | **Allow configuration of ChaosMonkey properties via hbase-site** + +This change invalidates the need for a separate Java properties file to configure the ChaosMonkey included with HBase. These properties can be provided directly in hbase-site.xml. If configuration in provided in both locations, the Java properties file takes precendence. + + +--- + +* [HBASE-18489](https://issues.apache.org/jira/browse/HBASE-18489) | *Major* | **Expose scan cursor in RawScanResultConsumer** + +Add a 'cursor' method which returns an 'Optional\' in 'RawScanResultConsumer.ScanController'. You can use this method to obtain the scan cursor if available. + + +--- + +* [HBASE-18511](https://issues.apache.org/jira/browse/HBASE-18511) | *Blocker* | **Default no regions on master** + +Changes the configuration hbase.balancer.tablesOnMaster from list of table names that the can carry (with 'none' meaning no tables on the master) to instead be a boolean that is set to true if master carries tables/regions and false if it does not. If true, the master acts like any regionserver. + +If false, then the master carries no tables. This is the default for hbase-2.0.0. + +Another boolean configuration, hbase.balancer.tablesOnMaster.systemTablesOnly, when set to true, enables hbase.balancer.tablesOnMaster and makes it so the master hosts system tables exclusively (the long-time deploy mode of master branch and branch-2 up until this commit). + +UPDATE: This is broke. See HBASE-19785. +UPDATE2: Master carrying Regions does not work reliably, see HBASE-19828. + +See HBASE-19831, the issue to fix regions on Master + +The change of hbase.balancer.tablesOnMaster from String list to boolean and +the addition of a simple boolean to enable system-tables on Master was done +to constrain what operators might ask for via this master configuration. +Stipulating what tables are bound to the Master server verges into +regionserver grouping territory, a more robust means of specifying table +and server combinations. Operators should use this latter if they want +layouts more exotic than those supplied by the provided booleans. + + +--- + +* [HBASE-18553](https://issues.apache.org/jira/browse/HBASE-18553) | *Major* | **Expose scan cursor for asynchronous scanner** + +The ResultScanner which is gotten from an AsyncTable will also return cursor results if Scan.isNeedCursorResult is true. + + +--- + +* [HBASE-18598](https://issues.apache.org/jira/browse/HBASE-18598) | *Minor* | **AsyncNonMetaRegionLocator use FIFO algorithm to get a candidate locate request** + +Introduce FIFO algorithm to get a candidate locate request for AsyncNonMetaRegionLocator. + + +--- + +* [HBASE-18533](https://issues.apache.org/jira/browse/HBASE-18533) | *Major* | **Expose BucketCache values to be configured** + +This patch exposes configuration for Bucketcache. These configs are very similar to those for the LRU cache, but are described below: + +"hbase.bucketcache.single.factor"; /\*\* Single access bucket size \*/ +"hbase.bucketcache.multi.factor"; /\*\* Multiple access bucket size \*/ +"hbase.bucketcache.memory.factor"; /\*\* In-memory bucket size \*/ +"hbase.bucketcache.extrafreefactor"; /\*\* Free this floating point factor of extra blocks when evicting. For example free the number of blocks requested \* (1 + extraFreeFactor) \*/ +"hbase.bucketcache.acceptfactor"; /\*\* Acceptable size of cache (no evictions if size \< acceptable) \*/ +"hbase.bucketcache.minfactor"; /\*\* Minimum threshold of cache (when evicting, evict until size \< min) \*/ + + +--- + +* [HBASE-18528](https://issues.apache.org/jira/browse/HBASE-18528) | *Critical* | **DON'T allow user to modify the passed table/column descriptor** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-18271](https://issues.apache.org/jira/browse/HBASE-18271) | *Blocker* | **Shade netty** + +Depend on hbase-thirdparty for our netty instead of directly relying on netty-all. netty is relocated in hbase-thirdparty from io.netty to org.apache.hadoop.hbase.shaded.io.netty. One kink is that netty bundles an .so. Its files also are relocated. So netty can find the .so content, need to specify on command-line a system property telling netty about the shading. + +The .so trick is from + https://stackoverflow.com/questions/33825743/rename-files-inside-a-jar-using-some-maven-plugin + +In essence we need the below defined whenever we run tests or deploy: + +-Dorg.apache.hadoop.hbase.shaded.io.netty.packagePrefix=org.apache.hadoop.hbase.shaded. + +(The trailing '.' is required) + +See toward the end of this issue for how to pass config: https://github.com/netty/netty/issues/6665 + +The system property has been added to bin/hbase. If starting hbase with other than bin/hbase, add this system property (at least on linux). + +For devs, going forward, do not reference io.netty. Reference org.apache.hadoop.hbase.io.netty instead. Here is sample: + +{code} +-import io.netty.channel.Channel; +-import io.netty.channel.EventLoop; ++import org.apache.hadoop.hbase.shaded.io.netty.channel.Channel; ++import org.apache.hadoop.hbase.shaded.io.netty.channel.EventLoop; +{code} + + +--- + +* [HBASE-15511](https://issues.apache.org/jira/browse/HBASE-15511) | *Major* | **ClusterStatus should be able to return responses by scope** + +Provide a new way to get desired ClusterStatus with a set of ClusterStatus.Option, such that the response back to client can be limited. +Note that, the constructor way to new a ClusterStatus will be no longer support after 2.0.0, and use ClusterStatus.Builder instead. + + +--- + +* [HBASE-18551](https://issues.apache.org/jira/browse/HBASE-18551) | *Major* | **[AMv2] UnassignProcedure and crashed regionservers** + +Unassign will not proceed if it is unable to talk to the remote server. Now it will expire the server it is unable to communicate with and then wait until it is signaled by ServerCrashProcedure that the server's logs have been split. Only then will judge the unassign successful. + +We do this because a subsequent assign lacking the crashed server context might open a region w/o first splitting logs. + + +--- + +* [HBASE-18469](https://issues.apache.org/jira/browse/HBASE-18469) | *Critical* | **Correct RegionServer metric of totalRequestCount** + +In HBASE-18469 we introduced a new RegionServer metrics in name of "totalRowActionRequestCount" which counts in all row actions and equals to the sum of "readRequestCount" and "writeRequestCount". Meantime, we have changed "totalRequestCount" to count only once for multi request, while previously we will count in action number of the request. As a result, existing monitoring system on totalRequestCount will still work but see a smaller value, and we strongly recommend to change to use the new metrics to monitor server load. + + +--- + +* [HBASE-18500](https://issues.apache.org/jira/browse/HBASE-18500) | *Major* | **Performance issue: Don't use BufferedMutator for HTable's put method** + +Remove the deprecated method get/setWriteBufferSize from Table and remove writeBufferSize from TableBuilder. Remove the BufferedMutatorImpl from HTable. + + +--- + +* [HBASE-18387](https://issues.apache.org/jira/browse/HBASE-18387) | *Minor* | **[Thrift] Make principal configurable in DemoClient.java** + +This change allows the demonstration Thrift client to customize the server principal used by the Thrift server for instances secured with Kerberos. + + +--- + +* [HBASE-17125](https://issues.apache.org/jira/browse/HBASE-17125) | *Critical* | **Inconsistent result when use filter to read data** + +Marked Scan and Get's setMaxVersions() and setMaxVersions(int) as deprecated. They are easy to misunderstand with column family's max versions, so use readAllVersions() and readVersions(int) instead. + + +--- + +* [HBASE-18492](https://issues.apache.org/jira/browse/HBASE-18492) | *Major* | **[AMv2] Embed code for selecting highest versioned region server for system table regions in AssignmentManager.processAssignQueue()** + +Favors new servers over older versions when assigning system table regions (more to follow in this area; i.e. changes in the AM itself). + + +--- + +* [HBASE-18517](https://issues.apache.org/jira/browse/HBASE-18517) | *Major* | **limit max log message width in log4j** + +Sets a log length max of 1000 characters. + + +--- + +* [HBASE-18502](https://issues.apache.org/jira/browse/HBASE-18502) | *Critical* | **Change MasterObserver to use TableDescriptor and ColumnFamilyDescriptor** + +The methods which change to use TableDescriptor/ColumnFamilyDescriptor are shown below. ++ preCreateTable( ObserverContext,TableDescriptor, HRegionInfo[]) ++ postCreateTable(ObserverContext ,TableDescriptor, HRegionInfo[]) ++ preCreateTableAction(ObserverContext, TableDescriptor,HRegionInfo[]) ++ postCompletedCreateTableAction(ObserverContext,TableDescriptor,HRegionInfo[]) ++ preModifyTable(ObserverContext,TableName, TableDescriptor) ++ postModifyTable(ObserverContext,TableName, TableDescriptor) ++ preModifyTableAction( ObserverContext,TableName,TableDescriptor) ++ postCompletedModifyTableAction( ObserverContext,TableName,TableDescriptor) ++ preAddColumnFamily(ObserverContext,TableName, ColumnFamilyDescriptor) ++ postAddColumnFamily(ObserverContext,TableName, ColumnFamilyDescriptor) ++ preAddColumnFamilyAction(ObserverContext,TableName,ColumnFamilyDescriptor) ++ postCompletedAddColumnFamilyAction(ObserverContext,TableName, ColumnFamilyDescriptor) ++ preModifyColumnFamily(ObserverContext,TableName, ColumnFamilyDescriptor) ++ preModifyColumnFamilyAction(ObserverContext\,TableName,ColumnFamilyDescriptor) ++ preCloneSnapshot(ObserverContext\,SnapshotDescription,TableDescriptor) ++ postCloneSnapshot(ObserverContext\,SnapshotDescription,TableDescripto) ++ preRestoreSnapshot(ObserverContext\,List\, List\,String) ++ postGetTableDescriptors(ObserverContext\,List\, List\,String) ++ preGetTableNames(ObserverContext\,List\, String) ++ postGetTableNames(ObserverContext\,List\, String) + + +--- + +* [HBASE-18520](https://issues.apache.org/jira/browse/HBASE-18520) | *Minor* | **Add jmx value to determine true Master Start time** + +This JIRA adds a JMX value to track when the Master has finished initializing. +The jmx config is 'masterFinishedInitializationTime' and details the time in millis that the Master is fully usable and ready to serve requests. + + +--- + +* [HBASE-17056](https://issues.apache.org/jira/browse/HBASE-17056) | *Critical* | **Remove checked in PB generated files** + +Purge all checked in generated protobuf files (30MB). Generate protobuf files inline with the build. Remove checked-in and patched protobuf. Get it from new hbase-thirdparty instead. + +Side-effect: Our protobuf went from 3.1.0 to 3.3.1. + +Build does not take noticeably longer (still about 2.5 minutes to do a mvn clean install -DskipTests). + +IDEs will probably require a mvn build first else they'll complain about missing (generated) files. + + +--- + +* [HBASE-18374](https://issues.apache.org/jira/browse/HBASE-18374) | *Major* | **RegionServer Metrics improvements** + +This change adds the latency metrics checkAndPut, checkAndDelete, putBatch and deleteBatch . Also the previous regionserver "mutate" latency metrics are renamed to "put" metrics. Batch metrics capture the latency of the entire batch containing put/delete whereas put/delete metrics capture latency per operation. Note this change will break existing monitoring based on regionserver "mutate" latency metric. + + +--- + +* [HBASE-18023](https://issues.apache.org/jira/browse/HBASE-18023) | *Minor* | **Log multi-\* requests for more than threshold number of rows** + +HBASE-18023 introduces a warning message in the RegionServer log when an RPC is received from a client that has more than 5000 "actions" (where an "action" is a collection of mutations for a specific row) in a single RPC. Misbehaving clients who send large RPCs to RegionServers can be malicious, causing temporary pauses via garbage collection or denial of service via crashes. The threshold of 5000 actions per RPC is defined by the property "hbase.rpc.rows.warning.threshold" in hbase-site.xml. + + +--- + +* [HBASE-15968](https://issues.apache.org/jira/browse/HBASE-15968) | *Major* | **New behavior of versions considering mvcc and ts rather than ts only** + +This issue resolved two long-term issues in HBase: +Puts may be masked by a delete before them. +Major compactions change query results. + +This issue offer a new behavior to fix this issue with a little performance reduction. Set NEW\_VERSION\_BEHAVIOR to true to enable this feature in CF level. See HBASE-15968 for details. +Note if you enable this feature, the order of Mutations matters. But replication will disorder the entries by default. So you have to enable serial replication if you have slave clusters. See HBASE-9465 for details. + + +--- + +* [HBASE-18107](https://issues.apache.org/jira/browse/HBASE-18107) | *Major* | **[AMv2] Remove DispatchMergingRegionsRequest & DispatchMergingRegions** + +Removes merge region code added into branch-2 but that was not needed after all. Branch-2 replaced dispatchMergingRegions with MergeTableRegionsProcedure. + +Removed: + +# dispatchMergingRegions from Connection (was superceded long ago in branch-1). +# mergeRegions from RsRpcServices (was not used). + + +--- + +* [HBASE-15816](https://issues.apache.org/jira/browse/HBASE-15816) | *Major* | **Provide client with ability to set priority on Operations** + +Added setPriority(int priority) API to Put, Delete, Increment, Append, Get and Scan pojos. So for all these ops, the user can provide a custom priority level. + + +--- + +* [HBASE-18430](https://issues.apache.org/jira/browse/HBASE-18430) | *Major* | **Typo in "contributing to documentation" page** + +Pushed to {{master}}. Thanks, Coral! Congratulations on your first Apache HBase commit! + + +--- + +* [HBASE-17908](https://issues.apache.org/jira/browse/HBASE-17908) | *Critical* | **Upgrade guava** + +Use relocated guava 22.0 gotten from the new hbase-thirdparty ancillary project. + +Incompatible change. ReplicationEndpoint and subclasses extend guava Service which changed pretty radically between 12.0 and 22.0. Change is kosher because implementations are marked audience private. Still, this will likely cause grief for the likes of the downstream lily indexer. + + +--- + +* [HBASE-16993](https://issues.apache.org/jira/browse/HBASE-16993) | *Major* | **BucketCache throw java.io.IOException: Invalid HFile block magic when configuring hbase.bucketcache.bucket.sizes** + +Any value for hbase.bucketcache.bucket.sizes configuration to be multiple of 256. If that is not the case, instantiation of L2 Bucket cache itself will fail throwing IllegalArgumentException. + + +--- + +* [HBASE-16090](https://issues.apache.org/jira/browse/HBASE-16090) | *Major* | **ResultScanner is not closed in SyncTable#finishRemainingHashRanges()** + +pushed to 1.3 and 1.2. SyncTable was introduced in 1.2, so skipping 1.1. + + +--- + +* [HBASE-18332](https://issues.apache.org/jira/browse/HBASE-18332) | *Minor* | **Upgrade asciidoctor-maven-plugin** + +Committed to master and branch-2. Thanks! + + +--- + +* [HBASE-18161](https://issues.apache.org/jira/browse/HBASE-18161) | *Minor* | **Incremental Load support for Multiple-Table HFileOutputFormat** + +In order to use this feature, a user must 
 +1. Register their tables when configuring their job +
2. Create a composite key of the tablename and original rowkey to send as the mapper output key. + +

To register their tables (and configure their job for incremental load into multiple tables), a user must call the static MultiHFileOutputFormat.configureIncrementalLoad function to register the HBase tables that will be ingested into. 

 + +To create the composite key, a helper function MultiHFileOutputFormat2.createCompositeKey should be called with the destination tablename and rowkey as arguments, and the result should be output as the mapper key. + +
Before this JIRA, for HFileOutputFormat2 a configuration for the storage policy was set per Column Family. This was set manually by the user. In this JIRA, this is unchanged when using HFileOutputFormat2. However, when specifically using MultiHFileOutputFormat2, the user now has to manually set the prefix by creating a composite of the table name and the column family. The user can create the new composite value by calling MultiHFileOutputFormat2.createCompositeKey with the tablename and column family as arguments. + +Changes added through this JIRA are backwards compatible with existing HFileOutputFormat2 apis and functionality. + +The configuration parameter "hbase.mapreduce.hfileoutputformat.table.name" is now a REQUIRED parameter though it is normally set automatically when configureIncrementalLoad method is called within HFileOutputFormat2 + + +--- + +* [HBASE-18229](https://issues.apache.org/jira/browse/HBASE-18229) | *Critical* | **create new Async Split API to embrace AM v2** + +A new splitRegionAsync() API is added in client. The existing splitRegion() and split() API will call the new API so client does not have to change its code. + +Move HBaseAdmin.splitXXX() logic to master, client splitXXX() API now go to master directly instead of going to RegionServer first. + +Also added splitSync() API + + +--- + +* [HBASE-18339](https://issues.apache.org/jira/browse/HBASE-18339) | *Major* | **Update test-patch to use hadoop 3.0.0-alpha4** + +HBase now defaults to Apache Hadoop 3.0.0-alpha4 when the Hadoop 3 profile is active. + + +--- + +* [HBASE-18267](https://issues.apache.org/jira/browse/HBASE-18267) | *Major* | **The result from the postAppend is ignored** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-18307](https://issues.apache.org/jira/browse/HBASE-18307) | *Major* | **Share the same EventLoopGroup for NettyRpcServer, NettyRpcClient and AsyncFSWALProvider at RS side** + +There are two configuration name changes as the event loop configs will not only effect rpc server but be shared by different components in the same RS instance. + +'hbase.rpc.server.nativetransport' -\> 'hbase.netty.nativetransport' + +'hbase.netty.rpc.server.worker.count' -\> 'hbase.netty.worker.count' + + +--- + +* [HBASE-18241](https://issues.apache.org/jira/browse/HBASE-18241) | *Critical* | **Change client.Table, client.Admin, Region, Store, and HBaseTestingUtility to not use HTableDescriptor or HColumnDescriptor** + +- : removed API ++ : new API +\* : deprecated API +--------------------------- +Region class +- HTableDescriptor getTableDesc() ++TableDescriptor getTableDescriptor() + +Store class +- HColumnDescriptor getFamily() ++ ColumnFamilyDescriptor getColumnFamilyDescriptor() + +Table class +\* HTableDescriptor getTableDescriptor() ++ TableDescriptor getDescriptor()\| + +\*Admin class\* +\* HTableDescriptor getTableDescriptor(TableName) ++ List\ listTableDescriptor(TableName)\| +\* HTableDescriptor[] getTableDescriptors(List\) +\* HTableDescriptor[] getTableDescriptorsByTableName(List\) ++ List\ listTableDescriptors(List\) +\* HTableDescriptor[] listTables() ++ List\ listTableDescriptors() +\* HTableDescriptor[] listTables(Pattern) ++ List\ listTableDescriptors(Pattern) +\* HTableDescriptor[] listTables(String) ++ List\ listTableDescriptors(String) +\* HTableDescriptor[] listTables(Pattern, boolean) ++ List\ listTableDescriptors(Pattern, boolean) +\* HTableDescriptor[] listTables(String, boolean) ++ List\ listTableDescriptors(String, boolean) +\* HTableDescriptor[] deleteTables(String) +\* HTableDescriptor[] deleteTables(Pattern) +\* HTableDescriptor[] enableTables(String) +\* HTableDescriptor[] enableTables(Pattern) +\* HTableDescriptor[] disableTables(String) +\* HTableDescriptor[] disableTables(Pattern) +\* void modifyTable(TableName, HTableDescriptor) ++ void modifyTable(TableDescriptor) +\* void modifyTableAsync(TableName, HTableDescriptor) ++ void modifyTableAsync(TableDescriptor) +\* HTableDescriptor[] listTableDescriptorsByNamespace(String) ++ List\ listTableDescriptorsByNamespace(byte[]) +\* void createTable(HTableDescriptor) ++ void createTable(TableDescriptor) +\* void createTable(HTableDescriptor, byte[], byte[], int) ++ void createTable({color:red}TableDescriptor, byte[], byte[], int) +\* void createTable(HTableDescriptor, byte[][]) ++ void createTable(TableDescriptor, byte[][]) +\* Future\ createTableAsync(HTableDescriptor, byte[][]) ++ Future\ createTableAsync(TableDescriptor, byte[][]) + +\*HBaseTestingUtility class\* +\* Table createTable(HTableDescriptor, byte[][], Configuration) ++ Table createTable(TableDescriptor, byte[][], Configuration) +\* Table createTable(HTableDescriptor, byte[][], byte[][], Configuration) ++ Table createTable(TableDescriptor, byte[][], byte[][], Configuration) +\* public Table createTable(HTableDescriptor, byte[][]) ++ public Table createTable(TableDescriptor, byte[][]) +\* void modifyTableSync(Admin, HTableDescriptor) ++ void modifyTableSync(Admin, TableDescriptor) +\* HRegion createLocalHRegion(HTableDescriptor, byte [], byte []) ++ HRegion createLocalHRegion(TableDescriptor, byte [], byte []) +\* HRegion createLocalHRegion(HRegionInf, HTableDescriptor) ++ HRegion createLocalHRegion(HRegionInf, TableDescriptor) +\* HRegion createLocalHRegion(HRegionInfo, HTableDescriptor, WAL) ++ HRegion createLocalHRegion(HRegionInfo, TableDescriptor, WAL) +\* List createMultiRegionsInMeta(final Configuration, HTableDescriptor, byte [][]) ++ List createMultiRegionsInMeta(final Configuration, TableDescriptor, byte [][]) +\* HRegion createRegionAndWAL(HRegionInfo, Path, Configuration, HTableDescriptor) ++ HRegion createRegionAndWAL(HRegionInfo, Path, Configuration, TableDescriptor) +\* HRegion createRegionAndWAL(HRegionInfo, Pat, Configuration, HTableDescriptor, boolean) ++ HRegion createRegionAndWAL(HRegionInfo, Pat, Configuration, TableDescriptor, boolean) +\* int createPreSplitLoadTestTable(Configuration,HTableDescriptor, HColumnDescriptor) ++ int createPreSplitLoadTestTable(Configuration,TableDescriptor, ColumnFamilyDescriptor) +\* int createPreSplitLoadTestTable(Configuration, HTableDescriptor, HColumnDescriptor, int) ++ int createPreSplitLoadTestTable(Configuration, TableDescriptor, ColumnFamilyDescriptor, int) +\* int createPreSplitLoadTestTable(Configuration, HTableDescriptor, HColumnDescriptor[], int) ++ int createPreSplitLoadTestTable(Configuration, TableDescriptor, ColumnFamilyDescriptor[], int) +\* int createPreSplitLoadTestTable(Configuration,HTableDescriptor, HColumnDescriptor[],SplitAlgorithm, int) ++ int createPreSplitLoadTestTable(Configuration,TableDescriptor, ColumnFamilyDescriptor[],SplitAlgorithm, int) +\* HRegion createTestRegion(String, HColumnDescriptor) ++ HRegion createTestRegion(String, ColumnFamilyDescriptor) + + +--- + +* [HBASE-18083](https://issues.apache.org/jira/browse/HBASE-18083) | *Major* | **Make large/small file clean thread number configurable in HFileCleaner** + +After HBASE-18083 we could configure HFileCleaner to use multiple threads for large/small (archived) hfile cleaning with hbase.regionserver.hfilecleaner.large.thread.count and hbase.regionserver.hfilecleaner.small.thread.count, both default to 1. These properties support online configuration change. + + +--- + +* [HBASE-17931](https://issues.apache.org/jira/browse/HBASE-17931) | *Blocker* | **Assign system tables to servers with highest version** + +We usually keep compatibility between old client and new server so we can do rolling upgrade, HBase cluster first, then HBase client. But we don't guarantee new client can access old server. +In an HBase cluster, we have system tables and region servers will access these tables so for servers they are also an HBase client. So if the system tables are in region servers with lower version we may get trouble because region servers with higher version may can not access them. +After this patch, we will move all system regions to region servers with highest version. So when we do a rolling upgrade across two major or minor versions, we should ALWAYS UPGRADE MASTER FIRST and then upgrade region servers. The new master will handle system tables correctly. + + +--- + +* [HBASE-6581](https://issues.apache.org/jira/browse/HBASE-6581) | *Major* | **Build with hadoop.profile=3.0** + +Make us build against hadoop trunk (3.0) + + +--- + +* [HBASE-16120](https://issues.apache.org/jira/browse/HBASE-16120) | *Minor* | **Add shell test for truncate\_preserve** + +Add unit tests for truncate\_preserve + + +--- + +* [HBASE-18240](https://issues.apache.org/jira/browse/HBASE-18240) | *Major* | **Add hbase-thirdparty, a project with hbase utility including an hbase-shaded-thirdparty module with guava, netty, etc.** + +Adds a new project, hbase-thirdparty, at https://git-wip-us.apache.org/repos/asf/hbase-thirdparty used by core hbase. GroupID org.apache.hbase.thirdparty. Version 1.0.0. + +This project packages relocated third-party libraries used by Apache HBase such as protobuf, guava, and netty among others. HBase core depends on it. + +It has threre submodules, one to patch and then relocate (shade) protobuf, and one to do messy .so renaming (netty). The remainder module relocates a bundle of other (unpatched) libs used by hbase. This latter set includes protobuf-util, netty-all, gson, and guava. + +All shading is done using the same relocation offset of org.apache.hadoop.hbase.shaded; we add this prefix to the relocated thirdparty library class names. + +See the pom.xml in hbase-thirdparty for the explicit version of each third-party lib included (of note, we update out internal protobuf from 3.1.0 to 3.3.1). + + +--- + +* [HBASE-15943](https://issues.apache.org/jira/browse/HBASE-15943) | *Major* | **Add page displaying JVM process metrics** + +Adds new "Process Metrics' tab along the top which leads to new page that dumps mbean -- mostly jvm -- metrics + + +--- + +* [HBASE-14902](https://issues.apache.org/jira/browse/HBASE-14902) | *Major* | **Revert some of the stringency recently introduced by checkstyle tightening** + +Changes the checkstyle so that on a continuation line for javadoc, instead of default four spaces, instead now it is two spaces. Also one line statements as in if (true) x =1; now pass checkstyle. + + +--- + +* [HBASE-17110](https://issues.apache.org/jira/browse/HBASE-17110) | *Major* | **Improve SimpleLoadBalancer to always take server-level balance into account** + +After HBASE-17110 the bytable strategy for SimpleLoadBalancer will also take server level balance into account + + +--- + +* [HBASE-17928](https://issues.apache.org/jira/browse/HBASE-17928) | *Major* | **Shell tool to clear compaction queues** + +Adds clear\_compaction\_queues to the hbase shell. +{code} + Clear compaction queues on a regionserver. + The queue\_name contains short and long. + short is shortCompactions's queue,long is longCompactions's queue. + + Examples: + hbase\> clear\_compaction\_queues 'host187.example.com,60020' + hbase\> clear\_compaction\_queues 'host187.example.com,60020','long' + hbase\> clear\_compaction\_queues 'host187.example.com,60020', ['long','short'] +{code} + + +--- + +* [HBASE-18164](https://issues.apache.org/jira/browse/HBASE-18164) | *Critical* | **Much faster locality cost function and candidate generator** + +New locality cost function and candidate generator that use caching and incremental computation to allow the stochastic load balancer to consider ~20x more cluster configurations for big clusters. + + +--- + +* [HBASE-18226](https://issues.apache.org/jira/browse/HBASE-18226) | *Major* | **Disable reverse DNS lookup at HMaster and use the hostname provided by RegionServer** + +The following config is added by this JIRA: + +hbase.regionserver.hostname.disable.master.reversedns + +This config is for experts: don't set its value unless you really know what you are doing. +When set to true, regionserver will use the current node hostname for the servername and HMaster will skip reverse DNS lookup and use the hostname sent by regionserver instead. Note that this config and hbase.regionserver.hostname are mutually exclusive. See https://issues.apache.org/jira/browse/HBASE-18226 for more details. + +Caution: please make sure rolling upgrade succeeds before turning on this feature. + + +--- + +* [HBASE-16242](https://issues.apache.org/jira/browse/HBASE-16242) | *Major* | **Upgrade Avro to 1.7.7** + +Apache HBase now specifies that version 1.7.7 of the Apache Avro library should be pulled in by maven and included in the convenience binary tarball. + + +--- + +* [HBASE-18213](https://issues.apache.org/jira/browse/HBASE-18213) | *Major* | **Add documentation about the new async client** + +Add documentation for async client in section '66. Client' in ref guide. + + +--- + +* [HBASE-17008](https://issues.apache.org/jira/browse/HBASE-17008) | *Critical* | **Examples to make AsyncClient go down easy** + +Add two examples for async client. AsyncClientExample is a simple example to show you how to use AsyncTable. HttpProxyExample is an example for advance user to show you how to use RawAsyncTable to write a fully asynchronous HTTP proxy server. There is no extra thread pool, all operations are executed inside netty's event loop. + + +--- + +* [HBASE-18200](https://issues.apache.org/jira/browse/HBASE-18200) | *Major* | **Set hadoop check versions for branch-2 and branch-2.x in pre commit** + +Allow setting different hadoop check versions for branch-2 and branch-2.x when running pre commit check. + + +--- + +* [HBASE-18187](https://issues.apache.org/jira/browse/HBASE-18187) | *Major* | **Release hbase-2.0.0-alpha1** + +Pushed the release. For detail: http://apache-hbase.679495.n3.nabble.com/ANNOUNCE-Apache-HBase-2-0-0-alpha-1-is-now-available-for-download-td4088484.html + + +--- + +* [HBASE-18137](https://issues.apache.org/jira/browse/HBASE-18137) | *Critical* | **Replication gets stuck for empty WALs** + +0-length WAL files can potentially cause the replication queue to get stuck. A new config "replication.source.eof.autorecovery" has been added: if set to true (default is false), the 0-length WAL file will be skipped after 1) the max number of retries has been hit, and 2) there are more WAL files in the queue. The risk of enabling this is that there is a chance the 0-length WAL file actually has some data (e.g. block went missing and will come back once a datanode is recovered). + + +--- + +* [HBASE-18192](https://issues.apache.org/jira/browse/HBASE-18192) | *Blocker* | **Replication drops recovered queues on region server shutdown** + +If a region server that is processing recovered queue for another previously dead region server is gracefully shut down, it can drop the recovered queue under certain conditions. Running without this fix on a 1.2+ release means possibility of continuing data loss in replication, irrespective of which WALProvider is used. +If a single WAL group (or DefaultWALProvider) is used, running without this fix will always cause dataloss in replication whenever a region server processing recovered queues is gracefully shutdown. + + +--- + +* [HBASE-18109](https://issues.apache.org/jira/browse/HBASE-18109) | *Critical* | **Assign system tables first (priority)** + +Adds a sort of procedures before submission so system tables are queued first (which will help ensure they go out first). This should be good enough along w/ existing scheduling mechanisms to ensure system/meta are assigned first (See reasoning below). Open new issue if insufficient. + + +--- + +* [HBASE-18008](https://issues.apache.org/jira/browse/HBASE-18008) | *Major* | **Any HColumnDescriptor we give out should be immutable** + +1) The HColumnDescriptor got from Admin, AsyncAdmin, and Table is immutable. +2) HColumnDescriptor have been marked as "Deprecated" and user should substituted + ColumnFamilyDescriptor for HColumnDescriptor. +3) ColumnFamilyDescriptor is constructed through ColumnFamilyDescriptorBuilder and it contains all of the read-only methods from HColumnDescriptor +4) The value to which the IS\_MOB/MOB\_THRESHOLD is mapped is stored as String rather than Boolean/Long. The MOB is an new feature to 2.0 so this change should be acceptable + + +--- + +* [HBASE-18149](https://issues.apache.org/jira/browse/HBASE-18149) | *Major* | **The setting rules for table-scope attributes and family-scope attributes should keep consistent** + +If the table-scope attributes value is false, you need not to enclose 'false' in single quotation.Both COMPACTION\_ENABLED =\> false and COMPACTION\_ENABLED =\> 'false' will take effect + + +--- + +* [HBASE-17849](https://issues.apache.org/jira/browse/HBASE-17849) | *Major* | **PE tool random read is not totally random** + +When randomRead and randomSeekScan is used with PE tool, now we allow using both --size and --rows. The --size specifies the total size of the data (the range) on which the reads should be performed and --rows specifies the number of rows to be read by each client with in that range. + + +--- + +* [HBASE-15576](https://issues.apache.org/jira/browse/HBASE-15576) | *Major* | **Scanning cursor to prevent blocking long time on ResultScanner.next()** + +If you don't like scanning being blocked too long because of heartbeat and partial result, you can use Scan#setNeedCursorResult(true) to get a special result within scanning timeout setting time which will tell you where row the server is scanning. See its javadoc for more details. + + +--- + +* [HBASE-16549](https://issues.apache.org/jira/browse/HBASE-16549) | *Major* | **Procedure v2 - Add new AM metrics** + +Following AMv2 procedures are modified to override onSubmit(), onFinish() hooks provided by HBASE-17888 to do +metrics calculations when procedures are submitted and finshed: +\* AssignProcedure +\* UnassignProcedure +\* MergeTableRegionProcedure +\* SplitTableRegionProcedure +\* ServerCrashProcedure + +Following metrics is collected for each of the above procedure during lifetime of a process: +\* Total number of requests submitted for a type of procedure +\* Histogram of runtime in milliseconds for successfully completed procedures +\* Total number of failed procedures + +As we are moving away from Hadoop's metric2, hbase-metrics-api module is used for newly added metrics. + + +--- + +* [HBASE-9393](https://issues.apache.org/jira/browse/HBASE-9393) | *Critical* | **Hbase does not closing a closed socket resulting in many CLOSE\_WAIT** + +To handle this issue client need to have Hadoop client 2.6.4 or 2.7.0+ Hadoop version as CanUnBuffer interface which was added as part of HDFS-7694 is available in only those versions. + + +--- + +* [HBASE-18038](https://issues.apache.org/jira/browse/HBASE-18038) | *Critical* | **Rename StoreFile to HStoreFile and add a StoreFile interface for CP** + +StoreFile is now changed to an interface. This is an incompatible change. The coprocessors which implement RegionObserver may need to modify their code. + + +--- + +* [HBASE-16196](https://issues.apache.org/jira/browse/HBASE-16196) | *Critical* | **Update jruby to a newer version.** + +The bundled JRuby 1.6.8 has been updated to version 9.1.9.0. The represents a change from Ruby 1.8 to Ruby 2.3.3, which introduces non-compatible language changes for user scripts. + +This JRuby version update required an update to joni-2.1.11 and jcodings-1.0.18, used for regular expression matching, as well as several transitive dependency updates that should not be user-visible. + + +--- + +* [HBASE-14614](https://issues.apache.org/jira/browse/HBASE-14614) | *Major* | **Procedure v2: Core Assignment Manager** + +Replaces the AssignmentManager with a new procedurev2-based AssignmentManager + +h1. AMv2 +Puts AssignmentManager up on top of the ProcedureV2 state machine with persistence engine. Each assignment atom is now a Procedure implementation; e.g. an AssignProcedure and an UnassignProcedure. Molecules of aggregated Procedures are used to do more involved assignment steps: e.g. the move region procedure is made of an Unassign followed by an Assign subprocedure. + +AMv2 is 1500 lines. Old AM was near 4000. Functionality has been moved out to Procedures. In-memory states of regions and servers has been cleaned up stored in new RegionStates implementation. RegionStateStore takes care of publishing final region state out to the hbase:meta table. + +New RemoteProcedureDispatcher/RSProcedureDispatcher runs the Procedure-based assignments ‘remotely’. Knows about ‘servers’. Does aggregation of assignments by time on a time/count basis so can send procedures in batches rather than one per RPC. Procedure status comes back on the back of the RegionServer heartbeat reporting online regions. The response is passed to the AMv2 to ‘process’. It will check against the in-memory state. If there is a mismatch, it fences out the RegionServer on the assumption that something went wrong on the RS side.Timeouts trigger retries. The Procedure machine ensures only one operation at a time on any one region/table using locking and smarts about what is serial and what can be run concurrently. + +New accounting of RegionServer version will be used running rolling restarts. + +‘States’ -- OPENING, CLOSING, etc. -- are now in-memory in-the-master only serialized out to the ProcedureV2 WAL. They are no longer persisted to ZooKeeper. + +h2. Assign Detail +The Assign starts by pushing the "assign" operation to the AssignmentManager and then will go into a “waiting" state. The AM will batch the "assign" requests and ask the Balancer where to put the region (the various policies will be respected: retain, round-robin, random). Once the AM and the balancer have found a place for the region, the procedure will be resumed and an "open region" request will be placed in the Remote Dispatcher queue, and the procedure once again will go into a "waiting state". The Remote Dispatcher will batch the various requests for that server and they will be sent to the RS for execution. The RS will complete the open operation by calling master.reportRegionStateTransition(). The AM will intercept the transition report, and notify the procedure. The procedure will finish the assignment by publishing to new state on hbase:meta or it will retry the assignment. + +h3. Unassign Detail + The Unassign starts by placing a "close region" request in the Remote Dispatcher queue, and the procedure will then go into a "waiting state". The Remote Dispatcher will batch the various requests for that server and they will be sent to the RS for execution. The RS will complete the open operation by calling master.reportRegionStateTransition(). The AM will intercept the transition report, and notify the procedure. The procedure will finish the unassign by publishing its new state on meta or it will retry the unassign. + +h1. New Configs + \* "hbase.procedure.remote.dispatcher.threadpool.size" defaults 128 + \* "hbase.procedure.remote.dispatcher.delay.msec" default 150ms + \* "hbase.procedure.remote.dispatcher.max.queue.size" with default 32 + \* "hbase.regionserver.rpc.startup.waittime" with default 60 seconds. +h1. TODO +As of this writing. + +Put up a model diagram. + + \* Handle region migration + \* Handle meta assignment first + \* Handle sys table assignment first (e.g. acl, namespace) + \* Handle table priorities + \* Do we report same AM metrics as we used too? We do it all in here now. + +INCOMPATIBLE +A known incompatible is that because splits and merges are now run from the master, Coprocessors that used to watch for merge/split from a RegionObserver now no longer work; to watch split/merges, you need to have an observer on the Master instead. + + +--- + +* [HBASE-3462](https://issues.apache.org/jira/browse/HBASE-3462) | *Major* | **Fix table.jsp in regards to splitting a region/table with an optional splitkey** + +UI pages for splitting/merging now operate by taking a row key prefix from the user rather than a full region name. + + +--- + +* [HBASE-18129](https://issues.apache.org/jira/browse/HBASE-18129) | *Major* | **truncate\_preserve fails when the truncate method doesn't exists on the master** + +The command truncate\_preserve will be fine when the truncate method doesn't exist on the master + + +--- + +* [HBASE-18122](https://issues.apache.org/jira/browse/HBASE-18122) | *Major* | **Scanner id should include ServerName of region server** + +The scanner id is not from 1 anymore. +The first 32 bits are MurmurHash32 of ServerName string "host,port,ts". The ServerName contains both host, port, and start timestamp so it can prevent collision. The lowest 32bit is generated by atomic int. + + +--- + +* [HBASE-17997](https://issues.apache.org/jira/browse/HBASE-17997) | *Major* | **In dev environment, add jruby-complete jar to classpath only when jruby is needed** + +When JRUBY\_HOME is specified, if the command is "hbase shell" or "hbase org.jruby.Main", CLASSPATH and HBASE\_OPTS will be updated according to JRUBY\_HOME specified +\* Jar under JRUBY\_HOME is added to CLASSPATH +\* The following will be added into HBASE\_OPTS + +-Djruby.home=$JRUBY\_HOME -Djruby.lib=$JRUBY\_HOME/lib + + +That is, as long as JRUBY\_HOME is specified, JRUBY\_HOME specified will take precedence. +\* In dev env, the jar recorded in cached\_classpath\_jruby.txt will be ignored +\* In non dev env, jruby-complete jar packaged with HBase will be ignored + + +--- + +* [HBASE-15616](https://issues.apache.org/jira/browse/HBASE-15616) | *Major* | **Allow null qualifier for all table operations** + +After this issue, all table operations will support null qualifier, such as put/get/scan/increment/append/checkAndMutate/checkAndPut/checkAndDelete. + + +--- + +* [HBASE-18035](https://issues.apache.org/jira/browse/HBASE-18035) | *Critical* | **Meta replica does not give any primaryOperationTimeout to primary meta region** + +When a client is configured to use meta replica, it sends scan request to all meta replicas almost at the same time. Since meta replica contains stale data, if result from one of replica comes back first, the client may get wrong region locations. To fix this, "hbase.client.meta.replica.scan.timeout" is introduced, a client will always send to primary meta region first, wait the configured timeout for reply. If no result is received, it will send request to replica meta regions. The unit for "hbase.client.meta.replica.scan.timeout" is microsecond, the default value is 1000000 (1 second). + + +--- + +* [HBASE-11013](https://issues.apache.org/jira/browse/HBASE-11013) | *Major* | **Clone Snapshots on Secure Cluster Should provide option to apply Retained User Permissions** + +While creating a snapshot, it will save permissions of the original table into .snapshotinfo file(Backward compatibility) , which is in the snapshot root directory. For clone\_snapshot/restore\_snapshot command, we provide an additional option( RESTORE\_ACL) to decide whether we will grant permissons of the origin table to the newly created table. + + +--- + +* [HBASE-18018](https://issues.apache.org/jira/browse/HBASE-18018) | *Major* | **Support abort for all procedures by default** + +The default behavior for abort() method of StateMachineProcedure class is changed to support aborting all procedures irrespective of if procedure supports rollback or not. + + +--- + +* [HBASE-16851](https://issues.apache.org/jira/browse/HBASE-16851) | *Major* | **User-facing documentation for the In-Memory Compaction feature** + +Two blog posts on Apache HBase blog: user manual and programmer manual. +Ref. guide draft published: https://docs.google.com/document/d/1Xi1jh\_30NKnjE3wSR-XF5JQixtyT6H\_CdFTaVi78LKw/edit + + +--- + +* [HBASE-17343](https://issues.apache.org/jira/browse/HBASE-17343) | *Blocker* | **Make Compacting Memstore default in 2.0 with BASIC as the default type** + + This JIRA changes the default MemStore to be CompactingMemStore instead of DefaultMemStore. In-memory compaction of CompactingMemStore demonstrated sizable improvement in HBase’s write amplification and read/write performance. + +CompactingMemStore achieves these gains through smart use of RAM. The algorithm periodically re-organizes the in-memory data in efficient data structures and reduces redundancies. The HBase server’s memory footprint therefore periodically expands and contracts. The outcome is longer lifetime of data in memory, less I/O, and overall faster performance. More details about the algorithm and its use appear in the Apache HBase Blog: https://blogs.apache.org/hbase/ + +How To Use: +The in-memory compaction level can be configured both globally and per column family. The supported levels are none (DefaultMemStore), basic, and eager. + +By default, all tables apply basic in-memory compaction. This global configuration can be overridden in hbase-site.xml, as follows: + +\ + \hbase.hregion.compacting.memstore.type\ + \\\ + \ + +The level can also be configured in the HBase shell per column family, as follows: + +create ‘\’, +{NAME =\> ‘\’, IN\_MEMORY\_COMPACTION =\> ‘\’} + + +--- + +* [HBASE-17786](https://issues.apache.org/jira/browse/HBASE-17786) | *Major* | **Create LoadBalancer perf-tests (test balancer algorithm decoupled from workload)** + +$ bin/hbase org.apache.hadoop.hbase.master.balancer.LoadBalancerPerformanceEvaluation -help +usage: hbase org.apache.hadoop.hbase.master.balancer.LoadBalancerPerformanceEvaluation \ +Options: + -regions \ Number of regions to consider by load balancer. Default: 1000000 + -servers \ Number of servers to consider by load balancer. Default: 1000 + -load\_balancer \ Type of Load Balancer to use. Default: + org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer + + +--- + +* [HBASE-17887](https://issues.apache.org/jira/browse/HBASE-17887) | *Blocker* | **Row-level consistency is broken for read** + +Now we pass on list of memstoreScanners to the StoreScanner along with the new files to ensure that the StoreScanner sees the latest memstore after flush. + + +--- + +* [HBASE-15296](https://issues.apache.org/jira/browse/HBASE-15296) | *Major* | **Break out writer and reader from StoreFile** + +\ + + +The table information page in the Master UI now includes a schema section that describes the column families defined for that table as well as any column family specific properties that are set. + + +--- + +* [HBASE-17472](https://issues.apache.org/jira/browse/HBASE-17472) | *Major* | **Correct the semantic of permission grant** + +Before this patch, later granted permissions will override previous granted permissions, and previous granted permissions LOST. this issue re-define grant semantic: for master branch, later granted permissions will merge with previous granted permissions. for branch-1.4, grant keep override behavior for compatibility purpose, and a grant with mergeExistingPermission flag provided. + + +--- + +* [HBASE-17583](https://issues.apache.org/jira/browse/HBASE-17583) | *Major* | **Add inclusive/exclusive support for startRow and endRow of scan for sync client** + +Now you can include/exlude the startRow and stopRow for a scan. And the new methods to specify startRow and stopRow are withStartRow and withStopRow. The old methods to specify startRow and Row(include constructors) are marked as deprecated as in the old time if startRow and stopRow are equal then we will consider it as a get scan and include the stopRow implicitly. This is strange after we can set inclusiveness explicitly so we add new methods and depredate the old methods. The deprecated methods will be removed in the future. + + +--- + +* [HBASE-9702](https://issues.apache.org/jira/browse/HBASE-9702) | *Major* | **Change unittests that use "table" or "testtable" to use method names.** + +Changes all tests to use the TestName JUnit Rule everywhere rather than hardcode table/region/store names. + + +--- + +* [HBASE-17280](https://issues.apache.org/jira/browse/HBASE-17280) | *Minor* | **Add mechanism to control hbase cleaner behavior** + +The HBase cleaner chore process cleans up old WAL files and archived HFiles. Cleaner operation can affect query performance when running heavy workloads, so disable the cleaner during peak hours. The cleaner has the following HBase shell commands: + +- cleaner\_chore\_enabled: Queries whether cleaner chore is enabled/ disabled. +- cleaner\_chore\_run: Manually runs the cleaner to remove files. +- cleaner\_chore\_switch: enables or disables the cleaner and returns the previous state of the cleaner. For example, cleaner-switch true enables the cleaner. + +Following APIs are added in Admin: +- setCleanerChoreRunning(boolean on): Enable/Disable the cleaner chore +- runCleanerChore(): Ask for cleaner chore to run +- isCleanerChoreEnabled(): Query whether cleaner chore is enabled/ disabled. + + +--- + +* [HBASE-17599](https://issues.apache.org/jira/browse/HBASE-17599) | *Major* | **Use mayHaveMoreCellsInRow instead of isPartial** + +The word 'isPartial' is ambiguous so we introduce a new method 'mayHaveMoreCellsInRow' to replace it. And the old meaning of 'isPartial' is not the same with 'mayHaveMoreCellsInRow' as for batched scan, if the number of returned cells equals to the batch, isPartial will be false. After this change the meaning of 'isPartial' will be same with 'mayHaveMoreCellsInRow'. This is an incompatible change but it is not likely to break a lot of things as for batched scan the old 'isPartial' is just a redundant information, i.e, if the number of returned cells reaches the batch limit. You have already know the number of returned cells and the value of batch. + + +--- + +* [HBASE-17437](https://issues.apache.org/jira/browse/HBASE-17437) | *Major* | **Support specifying a WAL directory outside of the root directory** + +This patch adds support for specifying a WAL directory outside of the HBase root directory. + +Multiple configuration variables were added to accomplish this: +hbase.wal.dir: used to configure where the root WAL directory is located. Could be on a different FileSystem than the root directory. WAL directory can not be set to a subdirectory of the root directory. The default value of this is the root directory if unset. + +hbase.rootdir.perms: Configures FileSystem permissions to set on the root directory. This is '700' by default. + +hbase.wal.dir.perms: Configures FileSystem permissions to set on the WAL directory FileSystem. This is '700' by default. + + +--- + +* [HBASE-17350](https://issues.apache.org/jira/browse/HBASE-17350) | *Critical* | **Fixup of regionserver group-based assignment** + +A few bug fixes and tweaks to the fsgroup feature. + +Renamed shell command move\_rsgroup\_servers as move\_servers\_rsgroup +Renamed shell comand move\_rsgroup\_tables as move\_tables\_rsgroup + +Made the 'default' group more 'dynamic'; i.e. dead servers no longer show in the 'default' group. + + +--- + +* [HBASE-17578](https://issues.apache.org/jira/browse/HBASE-17578) | *Major* | **Thrift per-method metrics should still update in the case of exceptions** + +In prior versions, the HBase Thrift handlers failed to increment per-method metrics when an exception was encountered. These metrics will now always be incremented, whether an exception is encountered or not. This change also adds exception-type metrics, similar to those exposed in regionservers, for individual exceptions which are received by the Thrift handlers. + + +--- + +* [HBASE-17508](https://issues.apache.org/jira/browse/HBASE-17508) | *Major* | **Unify the implementation of small scan and regular scan for sync client** + +Now the scan.setSmall method is deprecated. Consider using scan.setLimit and scan.setReadType in the future. And we will open scanner lazily when you call scanner.next. This is an incompatible change which delays the table existence check and permission check. + + +--- + +* [HBASE-16981](https://issues.apache.org/jira/browse/HBASE-16981) | *Major* | **Expand Mob Compaction Partition policy from daily to weekly, monthly** + +Mob compaction partition policy can be set by +hbase\> create 't1', {NAME =\> 'f1', IS\_MOB =\> true, MOB\_THRESHOLD =\> 1000000, MOB\_COMPACT\_PARTITION\_POLICY =\> 'weekly'} + +or + +hbase\> alter 't1', {NAME =\> 'f1', IS\_MOB =\> true, MOB\_THRESHOLD =\> 1000000, MOB\_COMPACT\_PARTITION\_POLICY =\> 'monthly'} + +Available MOB\_COMPACT\_PARTITION\_POLICY options are "daily", "weekly" and "monthly", the default is "daily". + +When it is "weekly" policy, the mob compaction will try to compact files within one calendar week into one for a specific partition, similar for "daily" and "monthly". + +With "weekly" policy, one mob file normally is compacted twice during its lifetime (that is first on daily basis and then all such daily based compacted files belonging to a week at the weekly interval), for one region, there normally are 52 files for one year. With "Monthly" policy, one mob file normally is compacted 3 times during its lifetime (First daily and then weekly followed by monthly at end of every month) and normally there are 12 files for one year. + + +--- + +* [HBASE-17197](https://issues.apache.org/jira/browse/HBASE-17197) | *Major* | **hfile does not work in 2.0** + +The -f argument is no longer required specifying target file; just pass the file as an argument. + + +--- + +* [HBASE-16812](https://issues.apache.org/jira/browse/HBASE-16812) | *Minor* | **Clean up the locks in MOB** + +In MOB-enabled column family, the lock in the major compaction is removed. All the delete markers are retained in the major compaction, and a MOB reference tag is appended to each of the retained delete markers. + + +--- + +* [HBASE-12894](https://issues.apache.org/jira/browse/HBASE-12894) | *Critical* | **Upgrade Jetty to 9.2.6** + +Upgrades Jetty to 9.x from 6.x (Jetty9 is in different namespace from Jetty6). Also updated Jersey to 2.x and Servlet to 3.x. + + +--- + +* [HBASE-17566](https://issues.apache.org/jira/browse/HBASE-17566) | *Major* | **Jetty upgrade fixes** + +Fix inability at finding static content post push of parent issue moving us to jetty9. + + +--- + +* [HBASE-9774](https://issues.apache.org/jira/browse/HBASE-9774) | *Major* | **HBase native metrics and metric collection for coprocessors** + +This issue adds two new modules, hbase-metrics and hbase-metrics-api which define and implement the "new" metric system used internally within HBase. These two modules (and some other code in hbase-hadoop2-compat) module are referred as "HBase metrics framework" which is HBase-specific and independent of any other metrics library (including Hadoop metrics2 and dropwizards metrics). + +HBase Metrics API (hbase-metrics-api) contains the interface that HBase exposes internally and to third party code (including coprocessors). It is a thin +abstraction over the actual implementation for backwards compatibility guarantees. The metrics API in this hbase-metrics-api module is inspired by the Dropwizard metrics 3.1 API, however, the API is completely independent. + +hbase-metrics module contains implementation of the "HBase Metrics API", including MetricRegistry, Counter, Histogram, etc. These are highly concurrent implementations of the Metric interfaces. Metrics in HBase are grouped into different sets (like WAL, RPC, RegionServer, etc). Each group of metrics should be tracked via a MetricRegistry specific to that group. + +Historically, HBase has been using Hadoop's Metrics2 framework [3] for collecting and reporting the metrics internally. However, due to the difficultly of dealing with the Metrics2 framework, HBase is moving away from Hadoop's metrics implementation to its custom implementation. The move will happen incrementally, and during the time, both Hadoop Metrics2-based metrics and hbase-metrics module based classes will be in the source code. All new implementations for metrics SHOULD use the new API and framework. + +This jira also introduces the metrics API to coprocessor implementations. Coprocessor writes can export custom metrics using the API and have those collected via metrics2 sinks, as well as exported via JMX in regionserver metrics. + +More documentation available at: hbase-metrics-api/README.txt + + +--- + +* [HBASE-17491](https://issues.apache.org/jira/browse/HBASE-17491) | *Major* | **Remove all setters from HTable interface and introduce a TableBuilder to build Table instance** + +After HBASE-17491 all setter methods in HTable are marked as deprecated, moved into TableBuilder, and will be removed later. + + +--- + +* [HBASE-17067](https://issues.apache.org/jira/browse/HBASE-17067) | *Major* | **Procedure v2 - remove tryAcquire\*Lock and use wait/wake to make framework event based** + +Make the framework more 'lively'; undo 'suspend' notion in Procedure, rely on eventing mechanism instead. Lets us remove no longer needed synchronizations. Framework can now do more ops per second. + + +--- + +* [HBASE-16698](https://issues.apache.org/jira/browse/HBASE-16698) | *Major* | **Performance issue: handlers stuck waiting for CountDownLatch inside WALKey#getWriteEntry under high writing workload** + +Assign sequenceid to an edit before we go on the ringbuffer; undoes contention on WALKey latch. Adds a new config "hbase.hregion.mvcc.preassign" which defaults to true: i.e. this speedup is enabled. + +User could set this per-table level, like: +create 'table',{NAME=\>'f1',CONFIGURATION=\>{'hbase.hregion.mvcc.preassign'=\>'false'}} + + +--- + +* [HBASE-17488](https://issues.apache.org/jira/browse/HBASE-17488) | *Trivial* | **WALEdit should be lazily instantiated** + +prevent creating unused objects in the WALEdit's construction. ++If the cp#preBatchMutate returns true, the WALEdit is useless. So we should create the WALEdit after step 2. ++The cells came from cp should be counted because they are added into the WALEdit . The use case is the local index of phoenix ++If the mutation contains the SKIP\_WAL property, its cells aren't added into the WALEdit. So these cells shouldn't be counted. + + +--- + +* [HBASE-16831](https://issues.apache.org/jira/browse/HBASE-16831) | *Minor* | **Procedure V2 - Remove org.apache.hadoop.hbase.zookeeper.lock** + +Purges code that did zk-hosted locks for table ops (we do procedure-based locks now) + + +--- + +* [HBASE-16867](https://issues.apache.org/jira/browse/HBASE-16867) | *Major* | **Procedure V2 - Check ACLs for remote HBaseLock** + +Add checking ACL when taking locks. + + +--- + +* [HBASE-16786](https://issues.apache.org/jira/browse/HBASE-16786) | *Major* | **Procedure V2 - Move ZK-lock's uses to Procedure framework locks (LockProcedure)** + +Move locking to be procedure (Pv2) rather than zookeeper based. All locking moved over to new infrastructure including MOBing locking. + + +--- + +* [HBASE-17470](https://issues.apache.org/jira/browse/HBASE-17470) | *Major* | **Remove merge region code from region server** + +In 1.x branches, Admin.mergeRegions calls MASTER via dispatchMergingRegions RPC; when executing dispatchMergingRegions RPC, MASTER calls RS via MergeRegions to complete the merge in RS-side. + +With HBASE-16119, the merge logic moves to master-side. This JIRA cleans up unused RPCs (dispatchMergingRegions and MergeRegions) , removes dangerous tools such as Merge and HMerge, and deletes unused RegionServer-side merge region logic in 2.0 release. + + +--- + +* [HBASE-16744](https://issues.apache.org/jira/browse/HBASE-16744) | *Major* | **Procedure V2 - Lock procedures to allow clients to acquire locks on tables/namespaces/regions** + + Lock for HBase Entity either a Table, a Namespace, or Regions. + +These are remote locks which live on master, and need periodic heartbeats to keep them alive. (Once we request the lock, internally an heartbeat thread will be started). If master doesn't receive the heartbeat in time, it'll release the lock and make it available to other users. + +Use {@link LockServiceClient} to build instances. Then call {@link #requestLock()}. {@link #requestLock} will contact master to queue the lock and start the heartbeat thread which will check lock's status periodically and once the lock is acquired, it will send the heartbeats to the master. + +Use {@link #await} or {@link #await(long, TimeUnit)} to wait for the lock to be acquired. Always call {@link #unlock()} irrespective of whether lock was acquired or not. If the lock was acquired, it'll be released. If it was not acquired, it is possible that master grants the lock in future and the heartbeat thread keeps it alive forever by sending heartbeats. Calling {@link #unlock()} will stop the heartbeat thread and cancel the lock queued on master. + +There are 4 ways in which these remote locks may be released/can be lost: + \* Call {@link #unlock}. + \* Lock times out on master: Can happen because of network issues, GC pauses, etc. Worker thread will call the given abortable as soon as it detects such a situation. Fail to contact master: If worker thread can not contact mater and thus fails to send heartbeat before the timeout expires, it assumes that lock is lost and calls the + \* abortable. +Worker thread is interrupted. + +Use example: + + EntityLock lock = lockServiceClient.\*Lock(...., "exampled lock", abortable); + lock.requestLock(); + .... + ....can do other initializations here since lock is 'asynchronous'... + .... + if (lock.await(timeout)) { + ....logic requiring mutual exclusion + } + lock.unlock(); + + +--- + +* [HBASE-14061](https://issues.apache.org/jira/browse/HBASE-14061) | *Major* | **Support CF-level Storage Policy** + +After HBASE-14061 we support to set storage policy for HFile through "hbase.hstore.block.storage.policy" configuration, and we support CF-level setting to override the settings from configuration file. Currently supported storage policies include ALL\_SSD/ONE\_SSD/HOT/WARM/COLD, refer to http://hadoop.apache.org/docs/r2.6.0/hadoop-project-dist/hadoop-hdfs/ArchivalStorage.html for more details + +For example, to create a table with two families: "cf1" with "ALL\_SSD" storage policy and "cf2" with "ONE\_SSD", we could use below command in hbase shell: +create 'table',{NAME=\>'f1',STORAGE\_POLICY=\>'ALL\_SSD'},{NAME=\>'f2',STORAGE\_POLICY=\>'ONE\_SSD'} + +We could also set the configuration in table attribute like all other configurations: +create 'table',{NAME=\>'f1',CONFIGURATION=\>{'hbase.hstore.block.storage.policy'=\>'ONE\_SSD'}} + + +--- + +* [HBASE-17337](https://issues.apache.org/jira/browse/HBASE-17337) | *Major* | **list replication peers request should be routed through master** + +List replication peers request will be roughed through master. + + +--- + +* [HBASE-15172](https://issues.apache.org/jira/browse/HBASE-15172) | *Major* | **Support setting storage policy in bulkload** + +After HBASE-15172/HBASE-19016 we could set storage policy through "hbase.hstore.block.storage.policy" property for bulkload, or "hbase.hstore.block.storage.policy.\" for a specified family. Supported storage policy includes: ALL\_SSD, ONE\_SSD, HOT, WARM, COLD, etc. + + +--- + +* [HBASE-17336](https://issues.apache.org/jira/browse/HBASE-17336) | *Major* | **get/update replication peer config requests should be routed through master** + +Get/update replication peer config requests will be routed through master. + + +--- + +* [HBASE-17320](https://issues.apache.org/jira/browse/HBASE-17320) | *Major* | **Add inclusive/exclusive support for startRow and endRow of scan** + +Now you can specific the inclusive of startRow and stopRow for a scan using the new methods withStartRow(byte[] startRow, boolean inclusive) and withStopRow(byte[] stopRow, boolean inclusive). The old setStartRow and setStopRow methods, and the constructors are marked as deprecated because of an strange behavior that we will include the stopRow implicitly if startRow equals to stopRow. This is used to support get scan in the old time. Use withStartRow and withStopRow instead. + +For developers, the ConnectionUtils.createClosestRowBefore is also marked as deprecated as the row returned by this method is only very very close to the current row, not closest. Avoid using this method in the future. + + +--- + +* [HBASE-17314](https://issues.apache.org/jira/browse/HBASE-17314) | *Major* | **Limit total buffered size for all replication sources** + +Add a conf "replication.total.buffer.quota" to limit total size of buffered entries in all replication peers. It will prevent server getting OOM if there are many peers. Default value is 256MB. + + +--- + +* [HBASE-17174](https://issues.apache.org/jira/browse/HBASE-17174) | *Minor* | **Refactor the AsyncProcess, BufferedMutatorImpl, and HTable** + ++ cleanup some unused code ++ allow being able to share pool between BufferedMutatorImpl ++ setting "hbase.client.request.controller.impl" to the name of the alternate RequestController (traffic control) implementation class in Configuration ++ The default RequestController implementation is SimpleRequestController ++ setting "hbase.client.log.detail.period.ms" to call logger on a period when waiting for tasks to complete + + +--- + +* [HBASE-17335](https://issues.apache.org/jira/browse/HBASE-17335) | *Major* | **enable/disable replication peer requests should be routed through master** + +Enable/Disable replication peer requests will be routed through master. + + +--- + +* [HBASE-5401](https://issues.apache.org/jira/browse/HBASE-5401) | *Major* | **PerformanceEvaluation generates 10x the number of expected mappers** + +Changes how many tasks PE runs when clients are mapreduce. Now tasks == client count. Previous we hardcoded ten tasks per client instance. + + +--- + +* [HBASE-11392](https://issues.apache.org/jira/browse/HBASE-11392) | *Critical* | **add/remove peer requests should be routed through master** + +Add/Remove replication peer requests will be routed through master. And make ReplicationAdmin as Deprecated. + + +--- + +* [HBASE-15924](https://issues.apache.org/jira/browse/HBASE-15924) | *Major* | **Enhance hbase services autorestart capability to hbase-daemon.sh** + +Now one can start hbase services with enabled "autostart/autorestart" feature in controlled fashion with the help of "--autostart-window-size" to define the window period and the "--autostart-window-retry-limit" to define the number of times the hbase services have to be restarted upon being killed/terminated abnormally within the provided window perioid. + +The following cases are supported with "autostart/autorestart": + +a) --autostart-window-size=0 and --autostart-window-retry-limit=0, indicates infinite window size and no retry limit +b) not providing the args, will default to a) +c) --autostart-window-size=0 and --autostart-window-retry-limit=\ indicates the autostart process to bail out if the retry limit exceeds irrespective of window period +d) --autostart-window-size=\ and --autostart-window-retry-limit=\ indicates the autostart process to bail out if the retry limit "y" is exceeded for the last window period "x". + + +--- + +* [HBASE-17331](https://issues.apache.org/jira/browse/HBASE-17331) | *Minor* | **Avoid busy waiting in ThrottledInputStream** + +For each read(), old ThrottledInputStream sleeps/wakes/checks for many times for controlling the throughput. After this patch, ThrottledInputStream sleeps/wakes/checks only once. So we can reduce CPU usage. + + +--- + +* [HBASE-17296](https://issues.apache.org/jira/browse/HBASE-17296) | *Major* | **Provide per peer throttling for replication** + +Provide per peer throttling for replication. Add the bandwidth upper limit to ReplicationPeerConfig and a new shell cmd set\_peer\_bandwidth to update the bandwidth in need. + + +--- + +* [HBASE-17277](https://issues.apache.org/jira/browse/HBASE-17277) | *Major* | **Allow alternate BufferedMutator implementation** + +Specify the name of an alternate BufferedMutator implementation by either: + + \* Setting "hbase.client.bufferedmutator.classname" to the name of the alternate implementation class in Configuration + \* Or, by setting BufferedMutatorParams#implementationClassName and passing the amended BufferedMutatorParams when calling Connection#getBufferedMutator. + + +--- + +* [HBASE-17294](https://issues.apache.org/jira/browse/HBASE-17294) | *Major* | **External Configuration for Memory Compaction** + +This patch provides a single external knob to control memstore compaction. It also inmemory compaction with BASIC policy as our default (AFTERWORD: inmemory compaction as default was undone in HBASE-17333 because of test failures; will be reenabled in later, dedicated issue) + +Possible memstore compaction policies are: +(1) None - no memory compaction, when size threshold is exceeded data is flushed to disk +(2) Basic policy applies optimizations which modify the index to a more compacted representation. This is beneficial in all access patterns. The smaller the cells are the greater the benefit of this policy. This is the default policy. +(3) Eager - in addition to compacting the index representation as the basic policy, eager policy eliminates duplication while the data is still in memory (much like the on-disk compaction does after the data is flushed to disk). This policy is most useful for applications with high data churn or small working sets. + +Memory compaction policeman be set at the column family level at table creation time: +{code} +create ‘\’, + {NAME =\> ‘\’, + IN\_MEMORY\_COMPACTION =\> ‘\’} +{code} +or as a property at the global configuration level by setting the property in hbase-site.xml, with BASIC being the default value: +{code} +\ + \hbase.hregion.compacting.memstore.type\ + \\\ +\ +{code} +The values used in this property can change as memstore compaction policies evolve over time. + + +--- + +* [HBASE-16336](https://issues.apache.org/jira/browse/HBASE-16336) | *Major* | **Removing peers seems to be leaving spare queues** + +Add a ReplicationZKNodeCleaner periodically check and delete the useless replication queue zk node belong to the peer which is not exist. + + +--- + +* [HBASE-17272](https://issues.apache.org/jira/browse/HBASE-17272) | *Major* | **Doc how to run Standalone HBase over an HDFS instance; all daemons in one JVM but persisting to an HDFS instance** + +Adds section at http://hbase.apache.org/book.html#standalone.over.hdfs on how to make standalone persist to an hdfs instance (where standalone is all daemons in the one jvm). + + +--- + +* [HBASE-16700](https://issues.apache.org/jira/browse/HBASE-16700) | *Minor* | **Allow for coprocessor whitelisting** + +Provides ability to restrict table coprocessors based on HDFS path whitelist. (Particularly useful for allowing Phoenix coprocessors but not arbitrary user created coprocessors.) + + +--- + +* [HBASE-17221](https://issues.apache.org/jira/browse/HBASE-17221) | *Major* | **Abstract out an interface for RpcServer.Call** + +Provide an interface RpcCall on the server side. +RpcServer.Call now is marked as @InterfaceAudience.Private, and implements the interface RpcCall, + + +--- + +* [HBASE-16119](https://issues.apache.org/jira/browse/HBASE-16119) | *Major* | **Procedure v2 - Reimplement merge** + +The merge region logic is controlled by master in 2.0.0 (in 1.x, the core merge region logic is in the region server side). The coprocessors related to merge region in RS-side would be no-op in 2.0.0 and later release. Therefore, this is an incompatible change. Users needs to move the CP logic to new master CP and registers them. + +A new mergeRegionsAsync() API is added in client. The existing mergeRegions() API will call the new API so client does not have to change its code. + + +--- + +* [HBASE-17112](https://issues.apache.org/jira/browse/HBASE-17112) | *Major* | **Prevent setting timestamp of delta operations the same as previous value's** + +Before this issue, two concurrent Increments/Appends done in same millisecond or RS's clock going back will result in two results have same TS, which is not friendly to versioning and will get wrong result in slave cluster if the replication is disordered. +After this issue, the result of Increment/Append will always have an incremental TS. There is no any inconsistent in replication for these operations. But there is a rare case that if there is a Delete in same millisecond, the later result can not be masked by this Delete. This can be fixed after we have new semantics that previous Delete will never mask later Put even its timestamp is higher. + + +--- + +* [HBASE-17181](https://issues.apache.org/jira/browse/HBASE-17181) | *Minor* | **Let HBase thrift2 support TThreadedSelectorServer** + +Add TThreadedSelectorServer support for HBase Thrift2 + + +--- + +* [HBASE-17178](https://issues.apache.org/jira/browse/HBASE-17178) | *Major* | **Add region balance throttling** + +Add region balance throttling. Master execute every region balance plan per balance interval, which is equals to divide max balancing time by the size of region balance plan. And Introduce a new config hbase.master.balancer.maxRitPercent to protect availability. If config this to 0.01, then the max percent of regions in transition is 1% when balancing. Then the cluster's availability is at least 99% when balancing. + + +--- + +* [HBASE-15786](https://issues.apache.org/jira/browse/HBASE-15786) | *Major* | **Create DBB backed MSLAB pool** + +Added a new config hbase.regionserver.offheap.global.memstore.size using which one can specify the global off heap limit that all memstores can use. When this config is in MSLAB should be turned ON and we will use the entire size for the MSLAB pool. It will make off heap chunks and pool then. It will behave as if we are working with off heap memstores. When this config is having a valid value and MSLAB is turned OFF, the system will just ignore the offheap size and continue to use global max heap space % for memstores and work with on heap memstores. + + +--- + +* [HBASE-17132](https://issues.apache.org/jira/browse/HBASE-17132) | *Major* | **Cleanup deprecated code for WAL** + +Remove HLogKey and related classes and methods. Remove SequenceFile based log reader and writer. WALObserver and RegionObserver are changed so this is an incompatible change. + + +--- + +* [HBASE-16169](https://issues.apache.org/jira/browse/HBASE-16169) | *Major* | **Make RegionSizeCalculator scalable** + +Added couple of API's to Admin.java: + +Returns region load map of all regions hosted on a region server +Map\ getRegionLoad(ServerName sn) throws IOException; + +Returns region load map of all regions of a table hosted on a region server +Map\ getRegionLoad(ServerName sn, TableName tableName) throws IOException + +Added an API to region server: + +public GetRegionLoadResponse getRegionLoad(RpcController controller, + GetRegionLoadRequest request) throws ServiceException; + +Primary intention is to use this API for RegionSizeCalculator and not rely on Master for ClusterStatus. On large clusters, ClusterStatus() can take a long time. IfMaster is down/busy, then some of the jobs timeout/fail. Other possible uses: +1. If there is a lighter version of GetClusterStatus API (i.e without the ServerLoad for each RS), then custom maintenance tools can be better. In current world ClusterStatus is heavy. With the new APIs, each API's payload is smaller and distributed. So custom tools can call getRegionLoad() when needed, it will be more accurate. This helps with large clusters. For tools that don't need RegionLoad, the lighter version of API is fine enough. +2. Another use case is a tool like RSTop - since we can see selective metrics at RegionLevel (possibly even deltas between each RPC to the server). + + +--- + +* [HBASE-15788](https://issues.apache.org/jira/browse/HBASE-15788) | *Major* | **Use Offheap ByteBuffers from BufferPool to read RPC requests.** + +Using the ByteBuffers from ByteBufferPool to read the request bytes at server. When the size of the request is smaller than 1/6th size of a BB in the pool, we will not use that but read into an on demand created, proper sized on heap ByteBuffer. + + +--- + +* [HBASE-17046](https://issues.apache.org/jira/browse/HBASE-17046) | *Major* | **Add 1.1 doc to hbase.apache.org** + +Adds a 1.1. item to our 'Documentation and API' tab. Gives access to 1.1 APIs, XRef, etc. + + +--- + +* [HBASE-16962](https://issues.apache.org/jira/browse/HBASE-16962) | *Major* | **Add readPoint to preCompactScannerOpen() and preFlushScannerOpen() API** + +The following RegionObserver methods are deprecated + +InternalScanner preFlushScannerOpen(final ObserverContext\ c, + final Store store, final KeyValueScanner memstoreScanner, final InternalScanner s) + throws IOException; + +InternalScanner preCompactScannerOpen(final ObserverContext\ c, + final Store store, List\ scanners, final ScanType scanType, + final long earliestPutTs, final InternalScanner s, CompactionRequest request) + +Instead, use the following methods: + +InternalScanner preFlushScannerOpen(final ObserverContext\ c, + final Store store, final KeyValueScanner memstoreScanner, final InternalScanner s, + final long readPoint) throws IOException; + +InternalScanner preCompactScannerOpen(final ObserverContext\ c, + final Store store, List\ scanners, final ScanType scanType, + final long earliestPutTs, final InternalScanner s, final CompactionRequest request, + final long readPoint) throws IOException + + +--- + +* [HBASE-17017](https://issues.apache.org/jira/browse/HBASE-17017) | *Major* | **Remove the current per-region latency histogram metrics** + +Removes per-region level (get size, get time, scan size and scan time histogram) metrics that was exposed before. Per-region histogram metrics with 1000+ regions causes millions of objects to be allocated on heap. The patch introduces getCount and scanCount as counters rather than histograms. Other per-region level metrics are kept as they are. + + +--- + +* [HBASE-16955](https://issues.apache.org/jira/browse/HBASE-16955) | *Major* | **Fixup precommit protoc check to do new distributed protos and pb 3.1.0 build** + +Test that environment no longer has to have protoc (2.5 and 3.1) available. Needed small adjustment in yetus protoc build but otherwise all works. + + +--- + +* [HBASE-17050](https://issues.apache.org/jira/browse/HBASE-17050) | *Minor* | **Upgrade Apache CLI version from 1.2 to 1.3.1** + +Upgrade Apache CLI version from 1.2 to 1.3.1. + +These are few good/important changes included in this update: +- HelpFormatter now prints command-line options in the same order as they + have been added. Fixes CLI-212. +- Standard help text now shows mandatory arguments also for the first + option. Fixes CLI-186. +- A new parser is available: DefaultParser. It combines the features of the + GnuParser and the PosixParser. It also provides additional features like + partial matching for the long options, and long options without separator + (i.e like the JVM memory settings: -Xmx512m). This new parser deprecates + the previous ones. Fixes CLI-161,CLI-167,CLI-181. + +For full list of changes: + https://commons.apache.org/proper/commons-cli/changes-report.html#a1.3 + + +--- + +* [HBASE-15513](https://issues.apache.org/jira/browse/HBASE-15513) | *Major* | **hbase.hregion.memstore.chunkpool.maxsize is 0.0 by default** + +MSLAB chunk pool is on by default in hbase-2.0.0. + + +--- + +* [HBASE-16972](https://issues.apache.org/jira/browse/HBASE-16972) | *Major* | **Log more details for Scan#next request when responseTooSlow** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-17014](https://issues.apache.org/jira/browse/HBASE-17014) | *Minor* | **Add clearly marked starting and shutdown log messages for all services.** + +Delimit START, STOP, and ABORT messages with '\*\*\*\*\*' so denote. + + +--- + +* [HBASE-16765](https://issues.apache.org/jira/browse/HBASE-16765) | *Critical* | **New SteppingRegionSplitPolicy, avoid too aggressive spread of regions for small tables.** + +Introduces a new split policy: SteppingSplitPolicy +This will use a simple step function to split a region at (by default) 2 xflushSize when no other region of the same table is seen on the region server, or max-file-size when one or more other regions of the same table is seen. + +In HBase 2.0 this is going to be the default. In previous versions it can be configured. + + +--- + +* [HBASE-16608](https://issues.apache.org/jira/browse/HBASE-16608) | *Major* | **Introducing the ability to merge ImmutableSegments without copy-compaction or SQM usage** + +The index-compation and data-compaction variants of CompactingMemStore are introduced. In both types the active (mutable) segment is periodically flushed-in-memory and is added as immutable segment in the compaction pipeline. The CompactingMemStore of index-compaction type is merging all immutable segments of the compacting pipeline into one. The merging of N segments is explained below. The CompactingMemStore of data-compaction type is compacting all immutable segments of the compacting pipeline into one. After the merge/compaction the old segments in the compacting pipeline are replaced with one new. + +Before explaining the process of merging N old segments into new one, note that segment structure includes ordered index that allows traversing the cells data efficiently. The merge is copying the ordered indexes of the old segments into one ordered index of new segment. No data is copied, no cells are filtered. Alternatively, in the process of compacting N old segments into new one, both data and index are copied. The old cells are filtered, meaning upon compaction unused versions of the cells are not copied so the new segment has less data then all old ones. + +This issue introduces only the merging ability and simplifies the user intervention for switching between types. The previous CompactingMemStore structure was added by HBASE-16420 and HBASE-16421. The future refinements of the policy or merging/compacting will come in HBASE-16417. + +In order to create a table with CompactingMemStore as a MemStore one should use: +create ‘\’, {NAME =\> ‘\’, IN\_MEMORY\_COMPACTION =\> true} +IN\_MEMORY\_COMPACTION default is false, so table created as following will have the known DefaultMemStore as a MemStore. +create ‘\’, {NAME =\> ‘\’} + +The default type of CompactingMemStore is index-compaction. In order to change it to data-compaction one should add to the hbase-site.xml +\ + \hbase.hregion.compacting.memstore.type\ + \data-compaction\ + \ + +in addition to creating the table as following +create ‘\’, {NAME =\> ‘\’, IN\_MEMORY\_COMPACTION =\> true} + + +--- + +* [HBASE-16747](https://issues.apache.org/jira/browse/HBASE-16747) | *Major* | **Track memstore data size and heap overhead separately** + +Marking it as incompatible change as there is a change in behavior for region flush decision. The default flush size of 128 MB per region was tracked against both actual data bytes size + overhead of these cells in memstore memory (Overhead because of Cell java objects and CSLM entry). As part of this jira we will keep track of cell data size only in region level. So 128 MB flush size means, 128 MB of cell data bytes (key+ value+..) + +Globally we will track cell data size and heap overhead separately and will consider both for forced flushes. We will not allow over consume of heap memory by all memstore. This is as old case. Only tracking way is changed. + + +--- + +* [HBASE-16974](https://issues.apache.org/jira/browse/HBASE-16974) | *Minor* | **Update os-maven-plugin to 1.4.1.final+ for building shade file on RHEL/CentOS** + +Upgrade os-maven-plugin mvn extension which figures the os we are running on from 1.4 to 1.5. + + +--- + +* [HBASE-16952](https://issues.apache.org/jira/browse/HBASE-16952) | *Major* | **Replace hadoop-maven-plugins with protobuf-maven-plugin for building protos** + +Simplifies .proto manipulations. One step only now -- no need to keep pom.xml listing up to date with the protobuf protos directory content -- and no need to preinstall protoc; mvn does it all for you now. + + +--- + +* [HBASE-14551](https://issues.apache.org/jira/browse/HBASE-14551) | *Minor* | **Procedure v2 - Reimplement split** + +Moved the Split Region logic to Master and most of split region coprocessor is in master now. Need to change dependency such as Phoenix. + + +--- + +* [HBASE-15789](https://issues.apache.org/jira/browse/HBASE-15789) | *Major* | **PB related changes to work with offheap** + +This issue adds a patch to our checked in internal, shaded protobuf, but it also adds a general means of apply patches to our version of protobuf. Patches found in the new src/main/patches directory are all applied as the last task when you run a build with the -Pcompile-protobuf profile under the hbase-protocol-shaded module. This commit also includes our first patch to protobuf; it adds ByteInput to mimic pb3.1's ByteOutput (src/main/patches/HBASE-15789\_V2.patch attached here). + + +--- + +* [HBASE-16930](https://issues.apache.org/jira/browse/HBASE-16930) | *Major* | **AssignmentManager#checkWals() function can recur infinitely** + +Fixed potential infinite recursion in AssignmentManager.checkWals(). + + +--- + +* [HBASE-16463](https://issues.apache.org/jira/browse/HBASE-16463) | *Major* | **Improve transparent table/CF encryption with Commons Crypto** + +Improve transparent table/CF encryption with Commons Crypto. The change introduces a new optional CryptoCipherProvider (CommonsCryptoAES) for transparent table/CF encryption. And the encryption performance would be accelerated by hardware in modern CPU (AES-NI). This feature could be enabled by updating the configuration "hbase.crypto.cipherprovider" to "org.apache.hadoop.hbase.io.crypto.CryptoCipherProvider" in hbase-site.xml. For detailed information about transparent table/CF encryption including configuration examples see the Security section of the HBase manual. + + +--- + +* [HBASE-16414](https://issues.apache.org/jira/browse/HBASE-16414) | *Major* | **Improve performance for RPC encryption with Apache Common Crypto** + +With the security RPC and encryption enabled, introduce Apache Commons Crypto to do the encryption/decryption which supports both supports both JCE Cipher and OpenSSL Cipher. Adds new configs "hbase.rpc.crypto.encryption.aes.enabled" which defaults to false, and "hbase.rpc.crypto.encryption.aes.cipher.class" which defaults to "org.apache.commons.crypto.cipher.JceCipher" to support JCE Cipher, it also can be set as "org.apache.hadoop.crypto.OpensslCipher" to support Openssl Cipher. + + +--- + +* [HBASE-16721](https://issues.apache.org/jira/browse/HBASE-16721) | *Critical* | **Concurrency issue in WAL unflushed seqId tracking** + +Fixed a bug in sequenceId tracking for the WALs that caused WAL files to accumulate without being deleted due to a rare race condition. + + +--- + +* [HBASE-16834](https://issues.apache.org/jira/browse/HBASE-16834) | *Major* | **Add AsyncConnection support for ConnectionFactory** + +Add createAsyncConnection method to ConnectionFactory for creating AsyncConnection. The default implementation is org.apache.hadoop.hbase.client.AsyncConnectionImpl. You can use 'hbase.client.async.connection.impl' to plug in your own AsyncConnection implementation. + + +--- + +* [HBASE-16729](https://issues.apache.org/jira/browse/HBASE-16729) | *Trivial* | **Define the behavior of (default) empty FilterList** + +Empty filter list will behave as when there is no filter added. This change is a behavioral change for those who rely on Empty filter list. + + +--- + +* [HBASE-16799](https://issues.apache.org/jira/browse/HBASE-16799) | *Major* | **CP exposed Store should not expose unwanted APIs** + +Below APIs from CP exposed Store interface are removed +upsert(Iterable\ cells, long readpoint) +add(Cell cell) +add(Iterable\ cells) +replayCompactionMarker(CompactionDescriptor compaction, boolean pickCompactionFiles, boolean removeFiles) +assertBulkLoadHFileOk(Path srcPath) +bulkLoadHFile(String srcPathStr, long sequenceId) +bulkLoadHFile(StoreFileInfo fileInfo) + + +--- + +* [HBASE-15921](https://issues.apache.org/jira/browse/HBASE-15921) | *Major* | **Add first AsyncTable impl and create TableImpl based on it** + +Add AsyncConnection, AsyncTable and AsyncTableRegionLocator. Now the AsyncTable only support get, put and delete. And the implementation of AsyncTableRegionLocator is synchronous actually. + + +--- + +* [HBASE-16664](https://issues.apache.org/jira/browse/HBASE-16664) | *Major* | **Timeout logic in AsyncProcess is broken** + +This issue fix three bugs: +1. rpcTimeout configuration not work for one rpc call in AP +2. operationTimeout configuration not work for multi-request (batch, put) in AP +3. setRpcTimeout and setOperationTimeout in HTable is not worked for AP and BufferedMutator. + + +--- + +* [HBASE-16661](https://issues.apache.org/jira/browse/HBASE-16661) | *Minor* | **Add last major compaction age to per-region metrics** + +This adds a new per-region metric named "lastMajorCompactionAge" for tracking time since the last major compaction ran on a given region. If a major compaction has never run, the age will be equal to the current timestamp. + + +--- + +* [HBASE-16117](https://issues.apache.org/jira/browse/HBASE-16117) | *Major* | **Fix Connection leak in mapred.TableOutputFormat** + +(This change will be irrelevant after HBASE-16774 lands). +There is a subtle change with error handling when a connection is not able to connect to ZK. Attempts to create a connection when ZK is not up will now fail immediately instead of silently creating and then failing on a subsequent HBaseAdmin call. + + +--- + +* [HBASE-15984](https://issues.apache.org/jira/browse/HBASE-15984) | *Critical* | **Given failure to parse a given WAL that was closed cleanly, replay the WAL.** + +In some particular deployments, the Replication code believes it has +reached EOF for a WAL prior to successfully parsing all bytes known to +exist in a cleanly closed file. + +If an EOF is detected due to parsing or other errors while there are still unparsed bytes before the end-of-file trailer, we now reset the WAL to the very beginning and attempt a clean read-through. Because we will retry these failures indefinitely, two additional changes are made to help with diagnostics: + +\* On each retry attempt, a log message like the below will be emitted at the WARN level: + + Processing end of WAL file '{}'. At position {}, which is too far away + from reported file length {}. Restarting WAL reading (see HBASE-15983 + for details). + +\* additional metrics measure the use of this recovery mechanism. they are described in the reference guide. + + +--- + +* [HBASE-16753](https://issues.apache.org/jira/browse/HBASE-16753) | *Minor* | **There is a mismatch between suggested Java version in hbase-env.sh** + +Updates the comments and default values in a few scripts and docs to reflect our Java 1.8+ requirement. + + +--- + +* [HBASE-16567](https://issues.apache.org/jira/browse/HBASE-16567) | *Critical* | **Upgrade to protobuf-3.1.x** + +Core is now up on protobuf 3.1.0 (Coprocessor Endpoints and REST are still on protobuf 2.5.0). + + +--- + +* [HBASE-15638](https://issues.apache.org/jira/browse/HBASE-15638) | *Critical* | **Shade protobuf** + +Shade/relocate and include the protobuf we use internally. See protobuf chapter in the refguide for more on how we protobuf in hbase-.2.0.0 and going forward. + +See https://docs.google.com/document/d/1H4NgLXQ9Y9KejwobddCqaVMEDCGbyDcXtdF5iAfDIEk/edit# for how we arrived at this approach. + +See http://mail-archives.apache.org/mod\_mbox/hbase-dev/201610.mbox/%3C07850EDD-7230-431B-9AB0-C5C91B105EEC%40gmail.com%3E for discussion around merging this change and of how we might revert if an alternative to this awkward patch presents itself; e.g. an hadoop with CLASSPATH isolation (and means of dealing with Sparks use of protobuf 2.5.0, etc.) + + +--- + +* [HBASE-16264](https://issues.apache.org/jira/browse/HBASE-16264) | *Critical* | **Figure how to deal with endpoints and shaded pb** + +Shade/relocate the protobuf hbase uses internally. All core now refers to new module added in this patch, hbase-protocol-shaded. Coprocessor Endpoints carry-on with references to the original hbase-protocol module. See new chapter in book on protobufs on how-to going forward. + + +--- + +* [HBASE-16672](https://issues.apache.org/jira/browse/HBASE-16672) | *Major* | **Add option for bulk load to always copy hfile(s) instead of renaming** + +This issue adds a config, always.copy.files, to LoadIncrementalHFiles. +When set to true, source hfiles would be copied. Meaning source hfiles would be kept after bulk load is done. +Default value is false. + + +--- + +* [HBASE-16660](https://issues.apache.org/jira/browse/HBASE-16660) | *Critical* | **ArrayIndexOutOfBounds during the majorCompactionCheck in DateTieredCompaction** + +"Please do not use DateTieredCompaction with Major Compaction unless you have a version with this. Otherwise your cluster will not compact any store files and you can end up running out of file descriptors." @churro morales + + +--- + +* [HBASE-16257](https://issues.apache.org/jira/browse/HBASE-16257) | *Blocker* | **Move staging dir to be under hbase root dir** + +The HBase property 'hbase.bulkload.staging.dir' is deprecated and is ignored from HBase 2.0. It will defaults to hbase.rootdir/staging automatically with the correct permissions. + + +--- + +* [HBASE-16650](https://issues.apache.org/jira/browse/HBASE-16650) | *Major* | **Wrong usage of BlockCache eviction stat for heap memory tuning** + +Changed tracking of evictedBlocks count NOT to include evictions of blocks for a removed HFile. HFiles gets removed after compaction + + +--- + +* [HBASE-16294](https://issues.apache.org/jira/browse/HBASE-16294) | *Minor* | **hbck reporting "No HDFS region dir found" for replicas** + +Fixed warning error message displayed for region directory not found for non-default/ non-primary replicas in hbck + + +--- + +* [HBASE-16540](https://issues.apache.org/jira/browse/HBASE-16540) | *Major* | **Scan should do additional validation on start and stop row** + +Scan#setStartRow() and Scan#setStopRow() now validate the argument passed for each row key. If the length of the byte[] passed exceeds Short.MAX\_VALUE, an IllegalArgumentException will be thrown. + + +--- + +* [HBASE-7612](https://issues.apache.org/jira/browse/HBASE-7612) | *Trivial* | **[JDK8] Replace use of high-scale-lib counters with intrinsic facilities** + +org.apache.hadoop.hbase.util.Counter is deprecated now and will be removed in 3.0. Use LongAdder instead. + + +--- + +* [HBASE-16447](https://issues.apache.org/jira/browse/HBASE-16447) | *Critical* | **Replication by namespaces config in peer** + +Support replication by namespaces config in peer. +1. Set a namespace in peer config means that all tables in this namespace will be replicated. +2. If the namespaces config is null, then the table-cfs config decide which table's edit can be replicated. If the table-cfs config is null, then the namespaces config decide which table's edit can be replicated. +3. If you already have set a namespace in the peer config, then you can't set any table of this namespace to the peer config. If you already have set a table in the peer config, then you can't set this table's namespace to the peer config. + + +--- + +* [HBASE-16598](https://issues.apache.org/jira/browse/HBASE-16598) | *Major* | **Enable zookeeper useMulti always and clean up in HBase code** + +Deprecate the configuration property 'hbase.zookeeper.useMulti'. +useMulti will always be enabled. ZooKeeper 3.4.x and newer is required. + +Internal: + +The ZKUtil#multiOrSequential(ZooKeeperWatcher zkw, List\ ops, boolean runSequentialOnMultiFailure) will not check 'hbase.zookeeper.useMulti' anymore, and will always use multi. +It can still fall back to sequential operations if: + +RunSequentialOnMultiFailure is true +On calling multi, we get a ZooKeeper exception that can be handled by a sequential call. + + +--- + +* [HBASE-16388](https://issues.apache.org/jira/browse/HBASE-16388) | *Major* | **Prevent client threads being blocked by only one slow region server** + +Add a new configuration, hbase.client.perserver.requests.threshold, to limit the max number of concurrent request to one region server. If the user still create new request after reaching the limit, client will throw ServerTooBusyException and do not send the request to the server. This is a client side feature and can prevent client's threads being blocked by one slow region server resulting in the availability of client is much lower than the availability of region servers. + +For completeness, here extract on new config from hbase-default.xml: + +Property: hbase.client.perserver.requests.threshold +Default: 2147483647 +Description: The max number of concurrent pending requests for one server in all client threads (process level). Exceeding requests will be thrown ServerTooBusyException immediately to prevent user's threads being occupied and blocked by only one slow region server. If you use a fix number of threads to access HBase in a synchronous way, set this to a suitable value which is related to the number of threads will help you. See https://issues.apache.org/jira/browse/HBASE-16388 for details. + + +--- + +* [HBASE-15297](https://issues.apache.org/jira/browse/HBASE-15297) | *Minor* | **error message is wrong when a wrong namspace is specified in grant in hbase shell** + +The security admin instance available within the HBase shell now returns "false" from the namespace\_exists? method for non-existent namespaces rather than raising a wrapped NamespaceNotFoundException. + +As a side effect, when the "grant" and "revoke" commands in the HBase shell are invoked with a non-existent namespace the resulting error message now properly refers to said namespace rather than to the user. + + +--- + +* [HBASE-16086](https://issues.apache.org/jira/browse/HBASE-16086) | *Major* | **TableCfWALEntryFilter and ScopeWALEntryFilter should not redundantly iterate over cells.** + +push to branch-1.3+ + + +--- + +* [HBASE-16340](https://issues.apache.org/jira/browse/HBASE-16340) | *Critical* | **ensure no Xerces jars included** + +HBase no longer includes Xerces implementation jars that were previously included via transitive dependencies. Downstream users relying on HBase for these artifacts will need to update their dependencies. + + +--- + +* [HBASE-16213](https://issues.apache.org/jira/browse/HBASE-16213) | *Major* | **A new HFileBlock structure for fast random get** + +HBASE-16213 introduced a new DataBlockEncoding in name of ROW\_INDEX\_V1, which could improve random read (get) performance especially when the average record size (key-value size per row) is small. To use this feature, please set DATA\_BLOCK\_ENCODING to ROW\_INDEX\_V1 for CF of newly created table, or change existing CF with below command: +alter 'table\_name',{NAME =\> 'cf', DATA\_BLOCK\_ENCODING =\> 'ROW\_INDEX\_V1'}. + +Please note that if we turn this DBE on, HFile block will be bigger than NONE encoding because it adds some meta infos for binary search: +/\*\* + \* Store cells following every row's start offset, so we can binary search to a row's cells. + \* + \* Format: + \* flat cells + \* integer: number of rows + \* integer: row0's offset + \* integer: row1's offset + \* .... + \* integer: dataSize + \* +\*/ + +Seek in row when random reading is one of the main consumers of CPU. This helps. See slide #7 here https://www.slideshare.net/HBaseCon/lift-the-ceiling-of-hbase-throughputs?qid=597ee2fa-8125-4faa-bb3b-2bf1ba9ccafb&v=&b=&from\_search=6 + + +--- + +* [HBASE-16409](https://issues.apache.org/jira/browse/HBASE-16409) | *Minor* | **Row key for bad row should be properly delimited in VerifyReplication** + +--delimiter= option is added to verifyrep. +The delimiter would wrap bad rows in log output. + + +--- + +* [HBASE-14921](https://issues.apache.org/jira/browse/HBASE-14921) | *Major* | **Inmemory Compaction Optimizations; Segment Structure** + +A long, working issue that discussed Segment formats introducing CellArrayMap (delivered as the patch attached to this issue) and CellChunkMap (to be delivered later in HBASE-16421 but see patch v02 for an embryonic form named CellBlockSerialized); when to copy Segment data (and when not too); and then what to include at flush time (the suffix Segment or all Segments). Designs that evolved as discussion went on are attached. Outstanding issues turned up here, not including a CellChunkMap implementation, are listed below but are to be addressed in follow-ons (See HBASE-16417): + +1. The flattening without compaction is causing many small segments in pipeline, and they are not flushed all together. +2. The issue of compaction prediction cost. + + +--- + +* [HBASE-16450](https://issues.apache.org/jira/browse/HBASE-16450) | *Major* | **Shell tool to dump replication queues** + +New tool to dump existing replication peers, configurations and queues when using HBase Replication. The tool provides two flags: + + --distributed This flag will poll each RS for information about the replication queues being processed on this RS. +By default this is not enabled and the information about the replication queues and configuration will be obtained from ZooKeeper. + --hdfs When --distributed is used, this flag will attempt to calculate the total size of the WAL files used by the replication queues. Since its possible that multiple peers can be configured this value can be overestimated. + + +--- + +* [HBASE-16422](https://issues.apache.org/jira/browse/HBASE-16422) | *Major* | **Tighten our guarantees on compatibility across patch versions** + +Adds below change to our compat guarantees: + +{code} +-\* Example: A user using a newly deprecated api does not need to modify application code with hbase api calls until the next major version. + 10 +\* New APIs introduced in a patch version will only be added in a source compatible way footnote:[See 'Source Compatibility' https://blogs.oracle.com/darcy/entry/kinds\_of\_compatibility]: i.e. code that implements public APIs will continue to compile. +{code} + + +--- + +* [HBASE-7621](https://issues.apache.org/jira/browse/HBASE-7621) | *Major* | **REST client (RemoteHTable) doesn't support binary row keys** + +RemoteHTable now supports binary row keys with any character or byte by properly encoding request URLs. This is a both a behavioral change from earlier versions and an important fix for protocol correctness. + + +--- + +* [HBASE-12721](https://issues.apache.org/jira/browse/HBASE-12721) | *Major* | **Create Docker container cluster infrastructure to enable better testing** + +Downstream users wishing to test HBase in a "distributed" fashion (multiple "nodes" running as separate containers on the same host) can now do so in an automated fashion while leveraging Docker for process isolation via the clusterdock project. + +For details see the README.md in the dev-support/apache\_hbase\_topology folder. + + +--- + +* [HBASE-16267](https://issues.apache.org/jira/browse/HBASE-16267) | *Critical* | **Remove commons-httpclient dependency from hbase-rest module** + +This issue upgrades httpclient to 4.5.2 and httpcore to 4.4.4 which are the versions used by hadoop-2. +This is to handle the following CVE's. + +https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-5262 : http/conn/ssl/SSLConnectionSocketFactory.java in Apache HttpComponents HttpClient before 4.3.6 ignores the http.socket.timeout configuration setting during an SSL handshake, which allows remote attackers to cause a denial of service (HTTPS call hang) via unspecified vectors. + +https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-6153 +https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-5783 +Apache Commons HttpClient 3.x, as used in Amazon Flexible Payments Service (FPS) merchant Java SDK and other products, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate. + +Downstream users who are exposed to commons-httpclient via the HBase classpath will have to similarly update their dependency. + + +--- + +* [HBASE-16308](https://issues.apache.org/jira/browse/HBASE-16308) | *Major* | **Contain protobuf references** + +Undo protobuf references through the codebase so protobuf references are contained rather than spread about the codebase. For example, moved protobuff-ing up into the various Callables rather than repeat on each method invocation cleaning up boilerplate around rpc calls. Having a few protobuf reference locations only simplifies the parent issue shading project. + + +--- + +* [HBASE-16321](https://issues.apache.org/jira/browse/HBASE-16321) | *Blocker* | **Ensure findbugs jsr305 jar isn't present** + +HBase now ensures the jsr305 implementation from the findbugs project is not included in its binary artifacts or the compile / runtime dependencies of its user facing modules. Downstream users that rely on this jar will need to update their dependencies. + + +--- + +* [HBASE-8386](https://issues.apache.org/jira/browse/HBASE-8386) | *Major* | **deprecate TableMapReduce.addDependencyJars(Configuration, class\ ...)** + +The MapReduce helper function \`TableMapReduce.addDependencyJars(Configuration, class\ ...)\` has been deprecated since it is easy to use incorrectly. Most users should rely on addDependencyJars(Job) instead. + + +--- + +* [HBASE-16287](https://issues.apache.org/jira/browse/HBASE-16287) | *Major* | **LruBlockCache size should not exceed acceptableSize too many** + +In order to avoid blockcache size exceed acceptable size too much, we add one configuration "hbase.lru.blockcache.hard.capacity.limit.factor" to decide whether the block could be put into LruBlockCache or not. This factor defaults to 1.2 +If blockcache size \>= factor\*acceptableSize, we will reject the block into cache. + + +--- + +* [HBASE-16355](https://issues.apache.org/jira/browse/HBASE-16355) | *Major* | **hbase-client dependency on hbase-common test-jar should be test scope** + +The HBase client artifact previously incorrectly included the hbase-common test jar as a runtime dependency. With this change, that dependency has been moved to test scope. Downstream users are not expected to be impacted, unless they relied on the transitive dependency for these HBase internal test classes. + + +--- + +* [HBASE-16317](https://issues.apache.org/jira/browse/HBASE-16317) | *Blocker* | **revert all ESAPI changes** + +This issue reverts fixes designed to prevent malicious content from rendering in HBase's UIs. Specifically, these changes shipped in 1.1.4+ and 1.2.0+. They were removed due to licensing issues discovered in the dependencies they introduced. Their implementation and those dependencies have been removed from HBase! Removal of these dependencies is against the strict definition of our version compatibility guidelines. However, inclusion of non-Apache approved licenses cannot be tolerated. Implementation of these fixes using an Apache-appropriate means is tracked in HBASE-16328. + + +--- + +* [HBASE-16288](https://issues.apache.org/jira/browse/HBASE-16288) | *Critical* | **HFile intermediate block level indexes might recurse forever creating multi TB files** + +A new hfile configuration "hfile.index.block.min.entries" which defaults to 16 determines how many entries the hfile index block can have at least. The configuration which determines how large the index block can be at max (hfile.index.block.max.size) is ignored as long as we have fewer than hfile.index.block.min.entries entries. This ensures that multi-level index does not build up with too many levels. + + +--- + +* [HBASE-16186](https://issues.apache.org/jira/browse/HBASE-16186) | *Major* | **Fix AssignmentManager MBean name** + +The AssignmentManager MBean was named AssignmentManger (note misspelling). This patch fixed the misspelling. + + +--- + +* [HBASE-16289](https://issues.apache.org/jira/browse/HBASE-16289) | *Critical* | **AsyncProcess stuck messages need to print region/server** + +Adds logging of region and server. Helpful debugging. Logging now looks like this: +{code} +2016-06-23 17:07:18,759 INFO [Thread-1] client.AsyncProcess$AsyncRequestFutureImpl(1601): #1, waiting for 1 actions to finish on table: DUMMY\_TABLE +2016-06-23 17:07:18,759 INFO [Thread-1] client.AsyncProcess(1720): Left over 1 task(s) are processed on server(s): [s1:1,1,1] +2016-06-23 17:07:18,759 INFO [Thread-1] client.AsyncProcess(1728): Regions against which left over task(s) are processed: [DUMMY\_TABLE,DUMMY\_BYTES\_1,1.3fd12ea80b4df621fb15497ba75f7368.,DUMMY\_TABLE,DUMMY\_BYTES\_2,2.924207e242e313d2e5491c625e0a296e.] +{code} + + +--- + +* [HBASE-14743](https://issues.apache.org/jira/browse/HBASE-14743) | *Minor* | **Add metrics around HeapMemoryManager** + +A memory metrics reveals situations happened in both MemStores and BlockCache in RegionServer. Through this metrics, users/operators can know +1). Current size of MemStores and BlockCache in bytes. +2). Occurrence for Memstore minor and major flush. (named unblocked flush and blocked flush respectively, shown in histogram) +3). Dynamic changes in size between MemStores and BlockCache. (with Increase/Decrease as prefix, shown in histogram). And a counter for no changes, named DoNothingCounter. +4). Occurrence for memory usage alarm (used more than 95% by default) in RegionServer. (named AboveHeapOccupancyLowWatermarkCounter) + + +--- + +* [HBASE-13701](https://issues.apache.org/jira/browse/HBASE-13701) | *Major* | **Consolidate SecureBulkLoadEndpoint into HBase core as default for bulk load** + +SecureBulkLoadEndpoint  has been integrated into HBase core as default bulk load mechanism. It is no longer needed to install it as a coprocessor endpoint. +The new server is backward compatible, accommodating non-secure old client and secure old client requesting SecureBulkLoadEndpoint service. +SecureBulkLoadEndpoint is deprecated. The backward compatibility support may be removed in future releases. + + +--- + +* [HBASE-16244](https://issues.apache.org/jira/browse/HBASE-16244) | *Major* | **LocalHBaseCluster start timeout should be configurable** + +When LocalHBaseCluster is started from the command line the Master would give up after 30 seconds due to a hardcoded timeout meant for unit tests. This change allows the timeout to be configured via hbase-site as well as sets it to 5 minutes when LocalHBaseCluster is started from the command line. + + +--- + +* [HBASE-16052](https://issues.apache.org/jira/browse/HBASE-16052) | *Major* | **Improve HBaseFsck Scalability** + +HBASE-16052 improves the performance and scalability of HBaseFsck, especially for large clusters with a small number of large tables. + +Searching for lingering reference files is now a multi-threaded operation. Loading HDFS region directory information is now multi-threaded at the region-level instead of the table-level to maximize concurrency. A performance bug in HBaseFsck that resulted in redundant I/O and RPCs was fixed by introducing a FileStatusFilter that filters FileStatus objects directly. + + +--- + +* [HBASE-16144](https://issues.apache.org/jira/browse/HBASE-16144) | *Major* | **Replication queue's lock will live forever if RS acquiring the lock has died prematurely** + +If zk based replication queue is used and useMulti is false, we will schedule a chore to clean up the orphan replication queue lock on zk. + + +--- + +* [HBASE-3727](https://issues.apache.org/jira/browse/HBASE-3727) | *Minor* | **MultiHFileOutputFormat** + +MultiHFileOutputFormat support output of HFiles from multiple tables. It will output directories and hfiles as follow, + --table1 + --family1 + --family2 + --Hfiles + --table2 + --family3 + --hfiles + --family4 + +family directory and its hfiles match the output of HFileOutputFormat2 + + +--- + +* [HBASE-16231](https://issues.apache.org/jira/browse/HBASE-16231) | *Major* | **Integration tests should support client keytab login for secure clusters** + +Prior to this change, the integration test clients (IntegrationTest\*) relied on the Kerberos credential cache for authentication against secured clusters. This could lead to the tests failing due to authentication failures when the tickets in the credential cache expired. With this change, the integration test clients will make use of the configuration properties for "hbase.client.keytab.file" and "hbase.client.kerberos.principal", when available. This will perform a login from the configured keytab file and automatically refresh the credentials in the background for the process lifetime. + + +--- + +* [HBASE-13823](https://issues.apache.org/jira/browse/HBASE-13823) | *Major* | **Procedure V2: unnecessaery operations on AssignmentManager#recoverTableInDisablingState() and recoverTableInEnablingState()** + +For cluster upgraded from 1.0.x or older releases, master startup would not continue the in-progress enable/disable table process. If orphaned znode with ENABLING/DISABLING state exists in the cluster, run hbck or manually fix the issue. + +For new cluster or cluster upgraded from 1.1.x and newer release, there is no issue to worry about. + + +--- + +* [HBASE-16095](https://issues.apache.org/jira/browse/HBASE-16095) | *Major* | **Add priority to TableDescriptor and priority region open thread pool** + +Adds a PRIORITY property to the HTableDescriptor. PRIORITY should be in the same range as the RpcScheduler defines it (HConstants.XXX\_QOS). + +Table priorities are only used for region opening for now. There can be other uses later (like RpcScheduling). + +Regions of high priority tables (priority \>= than HIGH\_QOS) are opened from a different thread pool than the regular region open thread pool. However, table priorities are not used as a global order for region assigning or opening. + + +--- + +* [HBASE-16081](https://issues.apache.org/jira/browse/HBASE-16081) | *Blocker* | **Replication remove\_peer gets stuck and blocks WAL rolling** + +When a replication endpoint is sent a shutdown request by the replication source in situations like removing a peer, we now try to gracefully shut it down by draining the items already sent for replication to the peer cluster. If the drain does not complete in the specified time (hbase.rpc.timeout \* replication.source.maxterminationmultiplier), the regionserver is aborted to avoid blocking the WAL roll. + + +--- + +* [HBASE-16087](https://issues.apache.org/jira/browse/HBASE-16087) | *Major* | **Replication shouldn't start on a master if if only hosts system tables** + +Masters will no longer start any replication threads if they are hosting only system tables. + +In order to change this add something to the config for tables on master that doesn't start with "hbase:" ( Replicating system tables is something that's currently unsupported and can open up security holes, so do this at your own peril) + + +--- + +* [HBASE-14548](https://issues.apache.org/jira/browse/HBASE-14548) | *Major* | **Expand how table coprocessor jar and dependency path can be specified** + +Allow a directory containing the jars or some wildcards to be specified, such as: hdfs://namenode:port/user/hadoop-user/ +or +hdfs://namenode:port/user/hadoop-user/\*.jar + +Please note that if a directory is specified, all jar files(.jar) directly in the directory are added, but it does not search files in the subtree rooted in the directory. +Do not contain any wildcard if you would like to specify a directory. + + +--- + +* [HBASE-15925](https://issues.apache.org/jira/browse/HBASE-15925) | *Blocker* | **compat-module maven variable not evaluated** + +Downstream users of HBase dependencies that do not properly activate Maven profiles should now see a correct transitive dependency on the default hadoop-compatibility-module. + + +--- + +* [HBASE-16140](https://issues.apache.org/jira/browse/HBASE-16140) | *Major* | **bump owasp.esapi from 2.1.0 to 2.1.0.1** + +The dependency owasp.esapi had a compatible change from 2.1.0 to 2.1.0.1. As a result, the transitive dependency commons-fileupload had a change from 1.2 to 1.3.1, which has some minor class changes that impact binary compatibility. Interested users should check the release notes of commons-fileupload to see if any of the incompatible changes impact them. + +http://commons.apache.org/proper/commons-fileupload/changes-report.html + + +--- + +* [HBASE-16147](https://issues.apache.org/jira/browse/HBASE-16147) | *Major* | **Shell command for getting compaction state** + +compaction\_state shell command would return compaction state in String form: +NONE, MINOR, MAJOR, MAJOR\_AND\_MINOR + + +--- + +* [HBASE-14878](https://issues.apache.org/jira/browse/HBASE-14878) | *Major* | **maven archetype: client application with shaded jars** + +Adds new hbase-shaded-client archetype; also corrects an omission found in hbase-archetypes/README.md in the section headed "How to add a new archetype". + + +--- + +* [HBASE-14877](https://issues.apache.org/jira/browse/HBASE-14877) | *Major* | **maven archetype: client application** + +This patch introduces a new infrastructure for creation and maintenance of Maven archetypes in the context of the hbase project, and it also introduces the first archetype, which end-users may utilize to generate a simple hbase-client dependent project. + +NOTE that this patch should introduce two new WARNINGs ("Using platform encoding ... to copy filtered resources") into the hbase install process. These warnings are hard-wired into the maven-archetype-plugin:create-from-project goal. See hbase/hbase-archetypes/README.md, footnote [6] for details. + +After applying the patch, see hbase/hbase-archetypes/README.md for details regarding the new archetype infrastructure introduced by this patch. (The README text is also conveniently positioned at the top of the patch itself.) + +Here is the opening paragraph of the README.md file: +================= +The hbase-archetypes subproject of hbase provides an infrastructure for creation and maintenance of Maven archetypes pertinent to HBase. Upon deployment to the archetype catalog of the central Maven repository, these archetypes may be used by end-user developers to autogenerate completely configured Maven projects (including fully-functioning sample code) through invocation of the archetype:generate goal of the maven-archetype-plugin. +======== +The README.md file also contains several paragraphs under the heading, "Notes for contributors and committers to the HBase project", which explains the layout of 'hbase-archetypes', and how archetypes are created and installed into the local Maven repository, ready for deployment to the central Maven repository. It also outlines how new archetypes may be developed and added to the collection in the future. + + +--- + +* [HBASE-15977](https://issues.apache.org/jira/browse/HBASE-15977) | *Major* | **Failed variable substitution on home page** + +Done. Thanks, Dima, Andrew! + + +--- + +* [HBASE-5291](https://issues.apache.org/jira/browse/HBASE-5291) | *Major* | **Add Kerberos HTTP SPNEGO authentication support to HBase web consoles** + +HBase Web UIs can be secured from general public access using SPNEGO to require a valid Kerberos ticket. + +Setting 'hbase.security.authentication.ui' to 'kerberos' in hbase-site.xml is a global switch to have all Web UIs allow only authenticated clients via Kerberos. 'hbase.security.authentication.spnego.kerberos.principal' and 'hbase.security.authentication.spnego.kerberos.keytab' are two other required properties in hbase-site.xml, the Kerberos principal and keytab to use for the server to use to log in. The primary in the Kerberos principal must be 'HTTP' as required by the SPNEGO mechanism, e.g. 'HTTP/host.domain.com@DOMAIN.COM'. + + +--- + +* [HBASE-15950](https://issues.apache.org/jira/browse/HBASE-15950) | *Major* | **Fix memstore size estimates to be more tighter** + +The estimates of heap usage by the memstore objects (KeyValue, object and array header sizes, etc) have been made more accurate for heap sizes up to 32G (using CompressedOops), resulting in them dropping by 10-50% in practice. This also results in less number of flushes and compactions due to "fatter" flushes. YMMV. As a result, the actual heap usage of the memstore before being flushed may increase by up to 100%. If configured memory limits for the region server had been tuned based on observed usage, this change could result in worse GC behavior or even OutOfMemory errors. Set the environment property (not hbase-site.xml) "hbase.memorylayout.use.unsafe" to false to disable. + + +--- + +* [HBASE-16023](https://issues.apache.org/jira/browse/HBASE-16023) | *Major* | **Fastpath for the FIFO rpcscheduler** + +Adds a 'fastpath' when using the default FIFO rpc scheduler ('fifo'). Does direct handoff from Reader thread to Handler if there is one ready and willing. Will shine best when high random read workload (YCSB workloadc for instance) + + +--- + +* [HBASE-15971](https://issues.apache.org/jira/browse/HBASE-15971) | *Critical* | **Regression: Random Read/WorkloadC slower in 1.x than 0.98** + +Change the default rpc scheduler from 'deadline' to 'fifo' instead so it is the same as in branch 0.98. 'deadline' was of questionable benefit but with a high cost scheduling. To re-enable 'deadline', set hbase.ipc.server.callqueue.type to 'deadline' in your hbase-site.xml. + + +--- + +* [HBASE-15525](https://issues.apache.org/jira/browse/HBASE-15525) | *Critical* | **OutOfMemory could occur when using BoundedByteBufferPool during RPC bursts** + +Added a new ByteBufferPool which pools N ByteBuffers. By default it makes off heap ByteBuffers when getBuffer() is called. The size of each buffer defaults to 64KB. This can be configured using 'hbase.ipc.server.reservoir.initial.buffer.size'. The max number of buffers which can be pooled defaults to twice the number of handler threads in RS. This can be configured with key 'hbase.ipc.server.reservoir.initial.max'. While responding to read requests and client support Codec, we will create CellBlocks and directly return it as PB payload. For making this block, we will use N ByteBuffers from pool as per the total size of the response cells. The default size of 64 KB for the buffer is inline with the number of bytes written to RPC layer in one short.(That is also 64KB). When at point of time, the calle not able to get a free buffer from the pool (it returns null then), it will make on heap Buffer of same size (as that of Buffers in pool) and use that to create cell block. + + +--- + +* [HBASE-15994](https://issues.apache.org/jira/browse/HBASE-15994) | *Major* | **Allow selection of RpcSchedulers** + +Adds a FifoRpcSchedulerFactory so you can try the FifoRpcScheduler by setting "hbase.region.server.rpc.scheduler.factory.class" + + +--- + +* [HBASE-15989](https://issues.apache.org/jira/browse/HBASE-15989) | *Major* | **Remove hbase.online.schema.update.enable** + +Removes the "hbase.online.schema.update.enable" property. +from now, every operation that alter the schema (e.g. modifyTable, addFamily, removeFamily, ...) will use the online schema update. there is no need to disable/enable the table. + + +--- + +* [HBASE-15981](https://issues.apache.org/jira/browse/HBASE-15981) | *Minor* | **Stripe and Date-tiered compactions inaccurately suggest disabling table in docs** + +Removes reference to disabling table in docs for stripe and date-tiered compactions + + +--- + +* [HBASE-15931](https://issues.apache.org/jira/browse/HBASE-15931) | *Critical* | **Add log for long-running tasks in AsyncProcess** + +After HBASE-15931, we will log more details for long-running tasks in AsyncProcess#waitForMaximumCurrentTasks every 10 seconds, including: +1. Table name will be included in the tasks status log +2. On which regionserver(s) the tasks are runnning will be logged when less than hbase.client.threshold.log.details tasks left, by default 10. +3. Against which regions the tasks are running will be logged when less than 2 tasks left. + + +--- + +* [HBASE-15907](https://issues.apache.org/jira/browse/HBASE-15907) | *Major* | **Missing documentation of create table split options** + +documentation changes only - added section to Shell tricks and cross reference from region splitting section + + +--- + +* [HBASE-15915](https://issues.apache.org/jira/browse/HBASE-15915) | *Major* | **Set timeouts on hanging tests** + +Use @ClassRule to set timeout on test case level (instead of @Rule which sets timeout for the test methods). CategoryBasedTimeout.forClass(..) determines the timeout value based on category annotation (small/medium/large) on the test case. + + +--- + +* [HBASE-15875](https://issues.apache.org/jira/browse/HBASE-15875) | *Major* | **Remove HTable references and HTableInterface** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-15610](https://issues.apache.org/jira/browse/HBASE-15610) | *Blocker* | **Remove deprecated HConnection for 2.0 thus removing all PB references for 2.0** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-15890](https://issues.apache.org/jira/browse/HBASE-15890) | *Major* | **Allow thrift to set/unset "cacheBlocks" for Scans** + +Adds cacheBlocks to Scan + + +--- + +* [HBASE-15876](https://issues.apache.org/jira/browse/HBASE-15876) | *Blocker* | **Remove doBulkLoad(Path hfofDir, final HTable table) though it has not been through a full deprecation cycle** + +Removes a doBulkLoad method though it has not been through a full deprecation cycle (but it is 'damaged' because it has a parameter that has been properly deprecated). Use the alternative {code}public void doBulkLoad(Path hfofDir, final Admin admin, Table table, RegionLocator regionLocator){code} + +See http://mail-archives.apache.org/mod\_mbox/hbase-dev/201605.mbox/%3CCAMUu0w-ZiLoLBLO3D76=n3AjUr=VMtTUeYA28weLHYeq8+e3bQ@mail.gmail.com%3E for NOTICE on this 'premature' removal. + + +--- + +* [HBASE-15228](https://issues.apache.org/jira/browse/HBASE-15228) | *Major* | **Add the methods to RegionObserver to trigger start/complete restoring WALs** + +Added two hooks around WAL restore. +preReplayWALs(final ObserverContext\ ctx, HRegionInfo info, Path edits) +and +postReplayWALs(final ObserverContext\ ctx, HRegionInfo info, Path edits) + +Will be called at start and end of restore of a WAL file. +The other hook around WAL restore (preWALRestore ) will be called before restore of every entry within the WAL file. + + +--- + +* [HBASE-15856](https://issues.apache.org/jira/browse/HBASE-15856) | *Critical* | **Cached Connection instances can wind up with addresses never resolved** + +During periods where DNS resolution was not available or not working correctly, we could previously cache unresolved hostnames forever, in some cases preventing further connections to these hosts even when DNS service was restored. With this change, unresolved hostnames will no longer be cached, and will instead throw an UnknownHostException during connection setup. + + +--- + +* [HBASE-15593](https://issues.apache.org/jira/browse/HBASE-15593) | *Major* | **Time limit of scanning should be offered by client** + +Add a new configuration: hbase.ipc.min.client.request.timeout +Minimum allowable timeout (in milliseconds) in rpc request's header. This configuration exists to prevent the rpc service regarding this request as timeout immediately. + + +--- + +* [HBASE-15784](https://issues.apache.org/jira/browse/HBASE-15784) | *Major* | **Misuse core/maxPoolSize of LinkedBlockingQueue in ThreadPoolExecutor** + +The core pool size and max pool size of ThreadPoolExecutor should be the same when LinkedBlockingQueue is used. Thus the configurations hbase.hconnection.threads.max, hbase.hconnection.meta.lookup.threads.max, hbase.region.replica.replication.threads.max and hbase.multihconnection.threads.max are used as the number of the core threads, and the related configurations \*.thread.core are not used any more. + + +--- + +* [HBASE-15651](https://issues.apache.org/jira/browse/HBASE-15651) | *Major* | **Add report-flakies.py to use jenkins api to get failing tests** + +To find recent set of flakies, run the script added by this patch. Run it to get usage information passing -h: + +{code} +$ ./dev-support/report-flakies.py -h +{code} + +If you get the below: + +{code} +$ python ./dev-support/report-flakies.py +Traceback (most recent call last): + File "./dev-support/report-flakies.py", line 25, in \ + import requests +ImportError: No module named requests +{code} + +... install the requests module: + +{code} +$ sudo pip install requests +{code} + + +--- + +* [HBASE-15780](https://issues.apache.org/jira/browse/HBASE-15780) | *Critical* | **Expose AuthUtil as IA.Public** + +Downstream users with long lived applications that need to communicate with secure HBase instances can now rely on the AuthUtil class to handle authenticating via keytab. + +For more information, see the javadoc for the org.apache.hadoop.hbase.AuthUtil class. + + +--- + +* [HBASE-15811](https://issues.apache.org/jira/browse/HBASE-15811) | *Blocker* | **Batch Get after batch Put does not fetch all Cells** + +We were not waiting on all executors in a batch to complete which meant a read-your-own-writes could sometimes fail -- especially if client is loaded; i.e. putting to multiple machines in a cluster. The test for no-more-executors was damaged by the 0.99/0.98.4 fix "HBASE-11403 Fix race conditions around Object#notify" + + +--- + +* [HBASE-15801](https://issues.apache.org/jira/browse/HBASE-15801) | *Major* | **Upgrade checkstyle for all branches** + +All active branches now use maven-checkstyle-plugin 2.17 and checkstyle 6.18. + + +--- + +* [HBASE-15236](https://issues.apache.org/jira/browse/HBASE-15236) | *Major* | **Inconsistent cell reads over multiple bulk-loaded HFiles** + +This jira fixes that following bug: +During bulkloading, if there are multiple hfiles corresponding to same region, and if they have same timestamps (which may have been set using importtsv.timestamp) and duplicate keys across them, then get and scan may return values coming from different hfiles. + + +--- + +* [HBASE-15740](https://issues.apache.org/jira/browse/HBASE-15740) | *Major* | **Replication source.shippedKBs metric is undercounting because it is in KB** + +Removed Replication source.shippedKBs metric in favor of source.shippedBytes + + +--- + +* [HBASE-15773](https://issues.apache.org/jira/browse/HBASE-15773) | *Major* | **CellCounter improvements** + +The CellCounter map reduce job now supports additional configuration options on the Scan instance it creates, using the org.apache.hadoop.hbase.mapreduce.TableInputFormat defined property names. For a full list of the options, run ./hbase org.apache.hadoop.hbase.mapreduce.CellCounter with no arguments. + +CellCounter also no longer creates job counters for per-rowkey and per-rowkey/qualifier cell counts. For most tables, these counters would cause the job to fail due to mapreduce job counter limits. + + +--- + +* [HBASE-15759](https://issues.apache.org/jira/browse/HBASE-15759) | *Minor* | **RegionObserver.preStoreScannerOpen() doesn't have acces to current readpoint** + +The following RegionObserver method is deprecated and would no longer be called in hbase 2.0: + + public KeyValueScanner preStoreScannerOpen(final ObserverContext\ c, + final Store store, final Scan scan, final NavigableSet\ targetCols, + final KeyValueScanner s) throws IOException { + +Instead, override this method: + + public KeyValueScanner preStoreScannerOpen(final ObserverContext\ c, + final Store store, final Scan scan, final NavigableSet\ targetCols, + final KeyValueScanner s, final long readPt) throws IOException { + + +--- + +* [HBASE-15743](https://issues.apache.org/jira/browse/HBASE-15743) | *Major* | **Add Transparent Data Encryption support for FanOutOneBlockAsyncDFSOutput** + +Now the AsyncFSWAL can write data to a encryption zone on HDFS. + + +--- + +* [HBASE-15767](https://issues.apache.org/jira/browse/HBASE-15767) | *Major* | **Upgrade httpclient dependency** + +HBase now relies on version 4.3.6 of the Apache Commons HTTPClient library. Downstream users who are exposed to it via the HBase classpath will have to similarly update their dependency. + + +--- + +* [HBASE-15575](https://issues.apache.org/jira/browse/HBASE-15575) | *Minor* | **Rename table DDL \*Handler methods in MasterObserver to more meaningful names** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-15720](https://issues.apache.org/jira/browse/HBASE-15720) | *Major* | **Print row locks at the debug dump page** + +Adds a section to the debug dump page listing current row locks held. + + +--- + +* [HBASE-15703](https://issues.apache.org/jira/browse/HBASE-15703) | *Critical* | **Deadline scheduler needs to return to the client info about skipped calls, not just drop them** + +With previous deadline mode of RPC scheduling (the implementation in SimpleRpcScheduler, which is basically a FIFO except that long-running scans are de-prioritized) and FIFO-based RPC scheduler clients are getting CallQueueTooBigException when RPC call queue is full. + +With this patch and when hbase.ipc.server.callqueue.type property is set to "codel" mode, clients will also be getting CallDroppedException, which means that the request was discarded by the server as it considers itself to be overloaded and starts to drop requests to avoid going down under the load. The clients will retry upon receiving this exception. It doesn't clear MetaCache with region locations. + + +--- + +* [HBASE-15281](https://issues.apache.org/jira/browse/HBASE-15281) | *Major* | **Allow the FileSystem inside HFileSystem to be wrapped** + +This patch adds new configuration property - hbase.fs.wrapper. If provided, it should be fully qualified class name of the class used as a pluggable wrapper for HFileSystem. This may be useful for specific debugging/tracing needs. + + +--- + +* [HBASE-15551](https://issues.apache.org/jira/browse/HBASE-15551) | *Minor* | **Make call queue too big exception use servername** + +Fixes issue when CallQueueTooBig exception returned to the client could print useless address info (like 0.0.0.0) if RPC server is listening on something other than the host name, making troubleshooting inconvenient. + + +--- + +* [HBASE-15711](https://issues.apache.org/jira/browse/HBASE-15711) | *Major* | **Add client side property to allow logging details for batch errors** + +In HBASE-15711 a new client side property hbase.client.log.batcherrors.details is introduced to allow logging full stacktrace of exceptions for batch error. It's disabled by default and set the property to true will enable it. + + +--- + +* [HBASE-15686](https://issues.apache.org/jira/browse/HBASE-15686) | *Major* | **Add override mechanism for the exempt classes when dynamically loading table coprocessor** + +New coprocessor table descriptor attribute, hbase.coprocessor.classloader.included.classes, is added. +User can specify class name prefixes (semicolon separated) which should be loaded by CoprocessorClassLoader through this attribute using the following syntax: +{code} + hbase\> alter 't1', 'coprocessor'=\>'hdfs:///foo.jar\|com.foo.FooRegionObserver\|1001\|arg1=1,arg2=2' +{code} + + +--- + +* [HBASE-15645](https://issues.apache.org/jira/browse/HBASE-15645) | *Critical* | **hbase.rpc.timeout is not used in operations of HTable** + +Fixes regression where hbase.rpc.timeout configuration was ignored in branch-1.0+ + +Adds new methods setOperationTimeout, getOperationTimeout, setRpcTimeout, and getRpcTimeout to Table. In branch-1.3+ they are public interfaces and in 1.0-1.2 they are labeled as @InterfaceAudience.Private. + +Adds hbase.client.operation.timeout to hbase-default.xml with default of 1200000 + + +--- + +* [HBASE-15477](https://issues.apache.org/jira/browse/HBASE-15477) | *Major* | **Do not save 'next block header' when we cache hfileblocks** + +Fix over-persisting in blockcache; no longer save the block PLUS the header of the next block (33 bytes) when writing the cache. + +Also removes support for hfileblock v1; hfile block v1 was used writing hfile v1. hfile v1 was the default in hbase before hbase-0.92. hbase.96 would not start unless all v1 hfiles had been compacted out of the cluster. + + +--- + +* [HBASE-15628](https://issues.apache.org/jira/browse/HBASE-15628) | *Major* | **Implement an AsyncOutputStream which can work with any FileSystem implementation** + +Introduce an AsyncFSOutput interface which is an abstraction of the original FanOutOneBlockAsyncDFSOutput. Now you can create AsyncFSOutput on any FileSystem using the method AsyncFSOutputHelper.createOutput. The returned AsyncFSOutput will be FanOutOneBlockAsyncDFSOutput if the given FileSystem is a DistributedFileSystem. + + +--- + +* [HBASE-15392](https://issues.apache.org/jira/browse/HBASE-15392) | *Major* | **Single Cell Get reads two HFileBlocks** + +When an explicit Get with a one or more columns specified, we at a minimum, were overseeking, reading until we tripped over the next row, regardless, and only then returning. If the next row was in-block, we'd just do too much seeking but if the next row was in the next (or in the next block beyond that), we would keep seeking and loading blocks until we found the next row before we'd return. + +There remains one case where we will still 'overread'. It is when the row end aligns with the end of the block. In this case we will load the next block just to find that there are no more cells in the current row. See HBASE-15457. + + +--- + +* [HBASE-15671](https://issues.apache.org/jira/browse/HBASE-15671) | *Major* | **Add per-table metrics on memstore, storefile and regionsize** + +Adds storeFileSize, memstoreSize and tableSize to the per-table metrics. + + +--- + +* [HBASE-15366](https://issues.apache.org/jira/browse/HBASE-15366) | *Major* | **Add doc, trace-level logging, and test around hfileblock** + +No functional change. Added javadoc, comments, and extra trace-level logging to make clear what is happening around the reading and caching of hfile blocks. + + +--- + +* [HBASE-15368](https://issues.apache.org/jira/browse/HBASE-15368) | *Major* | **Add pluggable window support** + +Use 'hbase.hstore.compaction.date.tiered.window.factory.class' to specify the window implementation you like for date tiered compaction. Now the only and default implementation is org.apache.hadoop.hbase.regionserver.compactions.ExponentialCompactionWindowFactory. + +{code} +\ +\hbase.hstore.compaction.date.tiered.window.factory.class\ +\org.apache.hadoop.hbase.regionserver.compactions.ExponentialCompactionWindowFactory\ +\ +\ +{code} + + +--- + +* [HBASE-15518](https://issues.apache.org/jira/browse/HBASE-15518) | *Major* | **Add Per-Table metrics back** + +Adds per-table metrics aggregated from per-region metrics in region server metrics. New metrics are available under JMX section "Hadoop:service=HBase,name=RegionServer,sub=Tables" and they are available via hadoop metrics2 collectors. + + +--- + +* [HBASE-15640](https://issues.apache.org/jira/browse/HBASE-15640) | *Major* | **L1 cache doesn't give fair warning that it is showing partial stats only when it hits limit** + +The blockcache UI tab would stop refreshing at 100k blocks (configurable, see "hbase.ui.blockcache.by.file.max"), which isn't very many blocks when doing a big cache, giving a misleading picture of the content of L1 and/or L2 cache. Up the default limit to 1M blocks (UI takes a while but just a few seconds counting over 1M blocks). + +Also, when beyond the limit give the user a noticeable WARNING in the UI. + + +--- + +* [HBASE-15386](https://issues.apache.org/jira/browse/HBASE-15386) | *Major* | **PREFETCH\_BLOCKS\_ON\_OPEN in HColumnDescriptor is ignored** + +This was a non-issue. The PREFETCH\_... flag actually works. While here though made the following additions. + +Changes the prefetch TRACE-level loggings to include the word 'Prefetch' in them so you know what they are about. + +Changes the cryptic logging of the CacheConfig#toString to have some preamble saying why and what column family is responsible (helps figure what is going on) + +Add test that verifies setting flag on HColumnDescriptor actually works. + + +--- + +* [HBASE-13372](https://issues.apache.org/jira/browse/HBASE-13372) | *Major* | **Unit tests for SplitTransaction and RegionMergeTransaction listeners** + +HBASE-13372 Add unit tests for SplitTransaction and RegionMergeTransaction listeners + + +--- + +* [HBASE-15187](https://issues.apache.org/jira/browse/HBASE-15187) | *Major* | **Integrate CSRF prevention filter to REST gateway** + +Protection against CSRF attack can be turned on with config parameter, hbase.rest.csrf.enabled - default value is false. + +The custom header to be sent can be changed via config parameter, hbase.rest.csrf.custom.header whose default value is "X-XSRF-HEADER". + +Config parameter, hbase.rest.csrf.methods.to.ignore , controls which HTTP methods are not associated with customer header check. + +Config parameter, hbase.rest-csrf.browser-useragents-regex , is a comma-separated list of regular expressions used to match against an HTTP request's User-Agent header when protection against cross-site request forgery (CSRF) is enabled for REST server by setting hbase.rest.csrf.enabled to true. + +The implementation came from hadoop/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/http/RestCsrfPreventionFilter.java + +We should periodically update the RestCsrfPreventionFilter.java in hbase codebase to include fixes to the hadoop implementation. + + +--- + +* [HBASE-15481](https://issues.apache.org/jira/browse/HBASE-15481) | *Trivial* | **Add pre/post roll to WALObserver** + + + + +WALObserver coprocessors now can receive notifications of WAL rolling via the new methods `preWALRoll` and `postWALRoll`. + +This change is incompatible due to the addition of these methods to the `WALObserver` interface. Downstream users are encouraged to instead extend the `BaseWALObserver` class, which remains compatible through this change. + + +--- + +* [HBASE-15507](https://issues.apache.org/jira/browse/HBASE-15507) | *Major* | **Online modification of enabled ReplicationPeerConfig** + +Added update\_peer\_config to the HBase shell and ReplicationAdmin, and provided a callback for custom replication endpoints to be notified of changes to their configuration and peer data + + +--- + +* [HBASE-15537](https://issues.apache.org/jira/browse/HBASE-15537) | *Major* | **Make multi WAL work with WALs other than FSHLog** + +Add the delegate config for multiwal back. Now you can use 'hbase.wal.regiongrouping.delegate.provider' to specify the wal provider you want to use for multiwal. For example: +{code} +\ +\hbase.wal.regiongrouping.delegate.provider\ +\asyncfs\ +\ +{code} +And the default value is filesystem which is the alias of DefaultWALProvider, i.e., the FSHLog. + + +--- + +* [HBASE-15400](https://issues.apache.org/jira/browse/HBASE-15400) | *Major* | **Use DateTieredCompactor for Date Tiered Compaction** + +With this patch combined with HBASE-15389, when we compact, we can output multiple files along the current window boundaries. There are two use cases: +1. Major compaction: We want to output date tiered store files with data older than max age archived in trunks of the window size on the higher tier. Once a window is old enough, we don't combine the windows to promote to the next tier any further. So files in these windows retain the same timespan as they were minor-compacted last time, which is the window size of the highest tier. Major compaction will touch these files and we want to maintain the same layout. This way, TTL and archiving will be simpler and more efficient. +2. Bulk load files and the old file generated by major compaction before upgrading to DTCP. + +This will change the way to enable date tiered compaction. +To turn it on: +hbase.hstore.engine.class: org.apache.hadoop.hbase.regionserver.DateTieredStoreEngine + +With tiered compaction all servers in the cluster will promote windows to higher tier at the same time, so using a compaction throttle is recommended: +hbase.regionserver.throughput.controller:org.apache.hadoop.hbase.regionserver.compactions.PressureAwareCompactionThroughputController +hbase.hstore.compaction.throughput.higher.bound and hbase.hstore.compaction.throughput.lower.bound need to be set for desired throughput range as uncompressed rates. + +Because there will most likely be more store files around, we need to adjust the configuration so that flush won't be blocked and compaction will be properly throttled: +hbase.hstore.blockingStoreFiles: change to 50 if using all default parameters when turning on date tiered compaction. Use 1.5~2 x projected file count if changing the parameters, Projected file count = windows per tier x tier count + incoming window min + files older than max age + +Because major compaction is turned on now, we also need to adjust the configuration for max file to compact according to the larger file count: +hbase.hstore.compaction.max: set to the same number as hbase.hstore.blockingStoreFiles. + +For more details, please refer to the design spec at https://docs.google.com/document/d/1\_AmlNb2N8Us1xICsTeGDLKIqL6T-oHoRLZ323MG\_uy8/edit# + + +--- + +* [HBASE-15592](https://issues.apache.org/jira/browse/HBASE-15592) | *Major* | **Print Procedure WAL content** + +Use hbase org.apache.hadoop.hbase.procedure2.store.wal.ProcedureWALPrettyPrinter +to print the content of a Procedure WAL. +e.g. +hbase org.apache.hadoop.hbase.procedure2.store.wal.ProcedureWALPrettyPrinter -f /hbase/MasterProcWALs/state-00000000000000002571.log + + +--- + +* [HBASE-15396](https://issues.apache.org/jira/browse/HBASE-15396) | *Minor* | **Enhance mapreduce.TableSplit to add encoded region name** + +To aid troubleshooting of MapReduce job that rely on the HBase provided input format, splits now include the encoded region name they cover. + + +--- + +* [HBASE-15568](https://issues.apache.org/jira/browse/HBASE-15568) | *Major* | **Procedure V2 - Remove CreateTableHandler in HBase Apache 2.0 release** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-15521](https://issues.apache.org/jira/browse/HBASE-15521) | *Major* | **Procedure V2 - RestoreSnapshot and CloneSnapshot** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-15538](https://issues.apache.org/jira/browse/HBASE-15538) | *Major* | **Implement secure async protobuf wal writer** + +Add the following config in hbase-site.xml if you want to use secure protobuf wal writer together with AsyncFSWAL +{code} +\ +\hbase.regionserver.hlog.async.writer.impl\ +\org.apache.hadoop.hbase.regionserver.wal.SecureAsyncProtobufLogWriter\ +\ +\ +{code} + + +--- + +* [HBASE-11393](https://issues.apache.org/jira/browse/HBASE-11393) | *Major* | **Replication TableCfs should be a PB object rather than a string** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-15265](https://issues.apache.org/jira/browse/HBASE-15265) | *Major* | **Implement an asynchronous FSHLog** + +To enable, set the WALProvider as follows: + +{code} +\ +\hbase.wal.provider\ +\asyncfs\ +\ +\ +{code} + +To check which provider is active, look for the log line: + +LOG.info("Instantiating WALProvider of type " + clazz); + + +--- + +* [HBASE-14256](https://issues.apache.org/jira/browse/HBASE-14256) | *Major* | **Flush task message may be confusing when region is recovered** + +HBASE-14256 Correct confusing flush task message + + +--- + +* [HBASE-15212](https://issues.apache.org/jira/browse/HBASE-15212) | *Major* | **RPCServer should enforce max request size** + +Adds a configuration parameter "hbase.ipc.max.request.size" which defaults to 256MB to protect the server against very large incoming RPC requests. All requests larger than this size will be immediately rejected before allocating any resources (memory allocation, etc). + + +--- + +* [HBASE-15412](https://issues.apache.org/jira/browse/HBASE-15412) | *Major* | **Add average region size metric** + +Adds a new metric for called "averageRegionSize" that is emitted as a regionserver metric. Metric description: +Average region size over the region server including memstore and storefile sizes + + +--- + +* [HBASE-15479](https://issues.apache.org/jira/browse/HBASE-15479) | *Major* | **No more garbage or beware of autoboxing** + +This fix decreases client's memory allocation during writes by more than 50%. + + +--- + +* [HBASE-15322](https://issues.apache.org/jira/browse/HBASE-15322) | *Critical* | **Operations using Unsafe path broken for platforms not having sun.misc.Unsafe** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-12940](https://issues.apache.org/jira/browse/HBASE-12940) | *Major* | **Expose listPeerConfigs and getPeerConfig to the HBase shell** + +Adds get\_peer\_config and list\_peer\_configs to the hbase shell. + + +--- + +* [HBASE-15430](https://issues.apache.org/jira/browse/HBASE-15430) | *Critical* | **Failed taking snapshot - Manifest proto-message too large** + +Failed taking snapshot - Manifest proto-message too large. add property ("snapshot.manifest.size.limit") to change max size of proto-message + + +--- + +* [HBASE-15323](https://issues.apache.org/jira/browse/HBASE-15323) | *Major* | **Hbase Rest CheckAndDeleteAPi should be able to delete more cells** + +Fixed an issue in REST server checkAndDelete operation where the remaining cells other than the to-be-checked column are also applied in the Delete operation. Also fixed an issue in RemoteHTable where the Delete object was not passed correctly to the REST server side. + + +--- + +* [HBASE-15377](https://issues.apache.org/jira/browse/HBASE-15377) | *Major* | **Per-RS Get metric is time based, per-region metric is size-based** + +Per-region metrics related to Get histograms are changed from being response size based into being latency based similar to the per-regionserver metrics of the same name. + +Added GetSize histogram metrics at the per-regionserver and per-region level for the response sizes. + + +--- + +* [HBASE-6721](https://issues.apache.org/jira/browse/HBASE-6721) | *Major* | **RegionServer Group based Assignment** + +[ADVANCED USERS ONLY] This patch adds a new experimental module hbase-rsgroup. It is an advanced feature for partitioning regionservers into distinctive groups for strict isolation, and should only be used by users who are sophisticated enough to understand the full implications and have a sufficient background in managing HBase clusters. + +RSGroups can be defined and managed with shell commands or corresponding Java APIs. A server can be added to a group with hostname and port pair, and tables can be moved to this group so that only regionservers in the same rsgroup can host the regions of the table. RegionServers and tables can only belong to 1 group at a time. By default, all tables and regionservers belong to the "default" group. System tables can also be put into a group using the regular APIs. A custom balancer implementation tracks assignments per rsgroup and makes sure to move regions to the relevant regionservers in that group. The group information is stored in a regular HBase table, and a zookeeper-based read-only cache is used at the cluster bootstrap time. + +To enable, add the following to your hbase-site.xml and restart your Master: + + + \ + \hbase.coprocessor.master.classes\ + \org.apache.hadoop.hbase.rsgroup.RSGroupAdminEndpoint\ + \ + \ + \hbase.master.loadbalancer.class\ + \org.apache.hadoop.hbase.rsgroup.RSGroupBasedLoadBalancer\ + \ + + +Then use the shell 'rsgroup' commands to create and manipulate regionserver groups: e.g. to add a group and then add a server to it, do as follows: + + hbase(main):008:0\> add\_rsgroup 'my\_group' + Took 0.5610 seconds + +This adds a group to the 'hbase:rsgroup' system table. Add a server (hostname + port) to the group using the 'move\_rsgroup\_servers' command as follows: + + hbase(main):010:0\> move\_rsgroup\_servers 'my\_group',['k.att.net:51129'] + + +--- + +* [HBASE-15435](https://issues.apache.org/jira/browse/HBASE-15435) | *Major* | **Add WAL (in bytes) written metric** + +Adds a new metric named "writtenBytes" as a per-regionserver metric. Metric Description: +Size (in bytes) of the data written to the WAL. + + +--- + +* [HBASE-13963](https://issues.apache.org/jira/browse/HBASE-13963) | *Critical* | **avoid leaking jdk.tools** + +HBase now ensures that the JDK tools jar used during the build process is not exposed to downstream clients as a transitive dependency of hbase-annotations. + +If you need to have the JDK tools jar in your classpath, you should add a system dependency on it. See the hbase-annotations pom for an example of the necessary pom additions. + + +--- + +* [HBASE-15271](https://issues.apache.org/jira/browse/HBASE-15271) | *Major* | **Spark Bulk Load: Need to write HFiles to tmp location then rename to protect from Spark Executor Failures** + +When using the bulk load helper provided by the hbase-spark module, output files will now be written into temporary files and only made available when the executor has successfully completed. + +Previously, failed executors would leave their files in place in a way that would be picked up by a bulk load command. This caused retried failures to include spurious copies of some cells. + + +--- + +* [HBASE-15364](https://issues.apache.org/jira/browse/HBASE-15364) | *Major* | **Fix unescaped \< characters in Javadoc** + +HBASE-15364 Fix unescaped \< and \> characters in Javadoc + + +--- + +* [HBASE-15243](https://issues.apache.org/jira/browse/HBASE-15243) | *Major* | **Utilize the lowest seek value when all Filters in MUST\_PASS\_ONE FilterList return SEEK\_NEXT\_USING\_HINT** + +When all filters in a MUST\_PASS\_ONE FilterList return a SEEK\_USING\_NEXT\_HINT code, we return SEEK\_NEXT\_USING\_HINT from the FilterList#filterKeyValue() to utilize the lowest seek value. + + +--- + +* [HBASE-15354](https://issues.apache.org/jira/browse/HBASE-15354) | *Major* | **Use same criteria for clearing meta cache for all operations** + +This patch fixes some issues when MetaCache (region location cache) gets unnecessarily dropped on the client. + +On master branch we now in RegionServerCallable and RegionServerAdminCallable pass the actual exception down to Connection#updateCachedLocation, so we could check there if the exception is "meta-clearing" or not. + +on branch-1, branch-1.2 and branch 1.3 we now check if the exception is meta-clearing or not in AsyncProcess (this check was there on master, but not on earlier branches) + + +--- + +* [HBASE-15376](https://issues.apache.org/jira/browse/HBASE-15376) | *Major* | **ScanNext metric is size-based while every other per-operation metric is time based** + +Removed ScanNext histogram metrics as regionserver level and per-region level metrics since the semantics is not compatible with other similar metrics (size histogram vs latency histogram). + +Instead, this patch adds ScanTime and ScanSize histogram metrics at the regionserver and per-region level. + + +--- + +* [HBASE-15338](https://issues.apache.org/jira/browse/HBASE-15338) | *Minor* | **Add a option to disable the data block cache for testing the performance of underlying file system** + +Add a new config: hbase.block.data.cacheonread, which is a global switch for caching data blocks on read. The default value of this switch is true, and data blocks will be cached on read if the block cache is enabled for the family and cacheBlocks flag is set to be true for get and scan operations. If this global switch is set to false, data blocks won't be cached even if the block cache is enabled for the family and the cacheBlocks flag of Gets or Scans are sets as true. Bloom blocks and index blocks are always be cached if the block cache of the regionserver is enabled. One usage of this switch is for the performance tests for the extreme case that the cache for data blocks all missed and all data blocks are read from underlying file system. + + +--- + +* [HBASE-15136](https://issues.apache.org/jira/browse/HBASE-15136) | *Critical* | **Explore different queuing behaviors while busy** + +Previously RPC request scheduler in HBase had 2 modes in could operate in: + + - simple FIFO + - "partial" deadline, where deadline constraints are only imposed on long-running scan requests. + +This patch adds new type of scheduler to HBase, based on the research around controlled delay (CoDel) algorithm [1], used in networking to combat bufferbloat, as well as some analysis on generalizing it to generic request queues [2]. The purpose of that work is to prevent long standing call queues caused by discrepancy between request rate and available throughput, caused by kernel/disk IO/networking stalls. + +New RPC scheduler could be enabled by setting hbase.ipc.server.callqueue.type=codel in configuration. Several additional params allow to configure algorithm behavior - + +hbase.ipc.server.callqueue.codel.target.delay +hbase.ipc.server.callqueue.codel.interval +hbase.ipc.server.callqueue.codel.lifo.threshold + +[1] Controlling Queue Delay / A modern AQM is just one piece of the solution to bufferbloat. http://queue.acm.org/detail.cfm?id=2209336 +[2] Fail at Scale / Reliability in the face of rapid change. http://queue.acm.org/detail.cfm?id=2839461 + + +--- + +* [HBASE-15181](https://issues.apache.org/jira/browse/HBASE-15181) | *Major* | **A simple implementation of date based tiered compaction** + +Date tiered compaction policy is a date-aware store file layout that is beneficial for time-range scans for time-series data. + +When it performs well: + + reads for limited time ranges, especially scans of recent data + +When it doesn't perform as well: + + random gets without a time range + frequent deletes and updates + out of order data writes, especially writes with timestamps in the future + bulk loads of historical data + +Recommended configuration: +To turn on Date Tiered Compaction (It is not recommended to turn on for the whole cluster because that will put meta table on it too and random get on meta table will be impacted): +hbase.hstore.compaction.compaction.policy: org.apache.hadoop.hbase.regionserver.compactions.DateTieredCompactionPolicy + +Parameters for Date Tiered Compaction: +hbase.hstore.compaction.date.tiered.max.storefile.age.millis: Files with max-timestamp smaller than this will no longer be compacted.Default at Long.MAX\_VALUE. +hbase.hstore.compaction.date.tiered.base.window.millis: base window size in milliseconds. Default at 6 hours. +hbase.hstore.compaction.date.tiered.windows.per.tier: number of windows per tier. Default at 4. +hbase.hstore.compaction.date.tiered.incoming.window.min: minimal number of files to compact in the incoming window. Set it to expected number of files in the window to avoid wasteful compaction. Default at 6. +hbase.hstore.compaction.date.tiered.window.policy.class: the policy to select store files within the same time window. It doesn’t apply to the incoming window. Default at exploring compaction. This is to avoid wasteful compaction. + +With tiered compaction all servers in the cluster will promote windows to higher tier at the same time, so using a compaction throttle is recommended: +hbase.regionserver.throughput.controller:org.apache.hadoop.hbase.regionserver.compactions.PressureAwareCompactionThroughputController + +Because there will most likely be more store files around, we need to adjust the configuration so that flush won't be blocked and compaction will be properly throttled: +hbase.hstore.blockingStoreFiles: change to 50 if using all default parameters when turning on date tiered compaction. Use 1.5~2 x projected file count if changing the parameters, Projected file count = windows per tier x tier count + incoming window min + files older than max age + +For more details, please refer to the design spec at https://docs.google.com/document/d/1\_AmlNb2N8Us1xICsTeGDLKIqL6T-oHoRLZ323MG\_uy8/edit# + + +--- + +* [HBASE-15290](https://issues.apache.org/jira/browse/HBASE-15290) | *Major* | **Hbase Rest CheckAndAPI should save other cells along with compared cell** + +Fixed an issue in REST server checkAndPut operation where the remaining cells other than the to-be-checked column are also applied in the put operation . + + +--- + +* [HBASE-15264](https://issues.apache.org/jira/browse/HBASE-15264) | *Major* | **Implement a fan out HDFS OutputStream** + +Implement a fan-out asynchronous DFSOutputStream for implementing new WAL writer. + + +--- + +* [HBASE-13259](https://issues.apache.org/jira/browse/HBASE-13259) | *Critical* | **mmap() based BucketCache IOEngine** + +mmap() based bucket cache can be configured by specifying the property +{code} +\ + \hbase.bucketcache.ioengine\ + \ mmap://filepath \ +\ +{code} +This mode of bucket cache is ideal when your file based bucket cache size is lesser than then available RAM. When the cache is bigger than the available RAM then the kernel page faults will make this cache perform lesser particularly in case of scans. + + +--- + +* [HBASE-11927](https://issues.apache.org/jira/browse/HBASE-11927) | *Major* | **Use Native Hadoop Library for HFile checksum (And flip default from CRC32 to CRC32C)** + +Checksumming is cpu intensive. HBase computes additional checksums for HFiles (hdfs does checksums too) and stores them inline with file data. During reading, these checksums are verified to ensure data is not corrupted. This patch tries to use Hadoop Native Library for checksum computation, if it’s available, otherwise falls back to standard Java libraries. Instructions to load NHL in HBase can be found here (http://hbase.apache.org/book.html#hadoop.native.lib). + +Default checksum algorithm has been changed from CRC32 to CRC32C primarily because of two reasons: 1) CRC32C has better error detection properties, and 2) New Intel processors have a dedicated instruction for crc32c computation (SSE4.2 instruction set)\*. This change is fully backward compatible. Also, users should not see any differences except decrease in cpu usage. To keep old settings, set configuration ‘hbase.hstore.checksum.algorithm’ to ‘CRC32’. + +\* On linux, run 'cat /proc/cpuinfo’ and look for sse4\_2 in list of flags to see if your processor supports SSE4.2. + + +--- + +* [HBASE-15219](https://issues.apache.org/jira/browse/HBASE-15219) | *Critical* | **Canary tool does not return non-zero exit code when one of regions is in stuck state** + +A new flag is added for Canary tool: -treatFailureAsError +When this flag is specified, read / write failure would result in Canary tool exit code of 5. + + +--- + +* [HBASE-14949](https://issues.apache.org/jira/browse/HBASE-14949) | *Major* | **Resolve name conflict when splitting if there are duplicated WAL entries** + +Now we can write duplicated WAL entries into different WAL files. This feature is required by the replication consistency fix and new implementation of WAL writer. + + +--- + +* [HBASE-15100](https://issues.apache.org/jira/browse/HBASE-15100) | *Blocker* | **Master WALProcs still never clean up** + +The constructor for o.a.h.hbase.ProcedureInfo was mistakenly labeled IA.Public in previous releases and has now changed to IA.Private. Downstream users are safe to consume ProcedureInfo objects returned from HBase public interfaces, but should not expect to be able to reliably create new instances themselves. + +The method ProcedureInfo.setNonceKey has been removed, because it should not have been exposed to clients. + + +--- + +* [HBASE-14355](https://issues.apache.org/jira/browse/HBASE-14355) | *Major* | **Scan different TimeRange for each column family** + +Adds being able to Scan each column family with a different time range. Adds new methods setColumnFamilyTimeRange and getColumnFamilyTimeRange to Scan. + + +--- + +* [HBASE-14460](https://issues.apache.org/jira/browse/HBASE-14460) | *Critical* | **[Perf Regression] Merge of MVCC and SequenceId (HBASE-8763) slowed Increments, CheckAndPuts, batch operations** + +This release note tries to tell the general story. Dive into sub-tasks for more specific release noting. + +Increments, appends, checkAnd\* have been slow since hbase-.1.0.0. The unification of mvcc and sequence id done by HBASE-8763 was responsible. + +A ‘fast-path’ workaround was added by HBASE-15031 “Fix merge of MVCC and SequenceID performance regression in branch-1.0 for Increments”. It became available in 1.0.3 and 1.1.3. To enable the fast path, set "hbase.increment.fast.but.narrow.consistency" and then rolling restart. The workaround was for increments only (appends, checkAndPut, etc., were not addressed. See HBASE-15031 release note for more detail). + +Subsequently, the regression was properly identified and fixed in HBASE-15213 and the fix applied to branch-1.0 and branch-1.1. As it happens, hbase-1.2.0 does not suffer from the performance regression (though the thought was that it did -- and so it got the fast-path patch too via HBASE-15092) nor does the master branch. HBASE-15213 identified that HBASE-12751 (as a side effect) had cured the regression. + +hbase-1.0.4 (if it is ever released -- 1.0 has been end-of-lifed) and hbase-1.1.4 will have the HBASE-15213 fix. If you are suffering from the increment regression and you are on 1.0.3 or 1.1.3, you can enable the work around to get back your increment performance but you should upgrade. + + +--- + +* [HBASE-15046](https://issues.apache.org/jira/browse/HBASE-15046) | *Major* | **Perf test doing all mutation steps under row lock** + +In here we perf tested a realignment of the write pipeline and mvcc handling. Thought was that this work was a predicate for a general fix of HBASE-14460 (turns out, realignment of write path was not needed to fix the increment perf regression). The perf testing here made it so we were able to simplify writing. HBASE-15158 was just committed. This work is done. + + +--- + +* [HBASE-15158](https://issues.apache.org/jira/browse/HBASE-15158) | *Major* | **Change order in which we do write pipeline operations; do all under row locks!** + +Changed the write pipeline order; made it more rational, easier-to-reason-about doing all updates to WA, MemStore, and mvcc while read/write rowlock is held where before we'd release after WAL append and then do sync and mvcc. + + +--- + +* [HBASE-15157](https://issues.apache.org/jira/browse/HBASE-15157) | *Major* | **Add \*PerformanceTest for Append, CheckAnd\*** + +Add append, increment, checkAndMutate, checkAndPut, and checkAndDelete tests to PerformanceEvaluation tool. Below are excerpts from new usage from PE: + +.... +Command: + append Append on each row; clients overlap on keyspace so some concurrent operations + checkAndDelete CheckAndDelete on each row; clients overlap on keyspace so some concurrent operations + checkAndMutate CheckAndMutate on each row; clients overlap on keyspace so some concurrent operations + checkAndPut CheckAndPut on each row; clients overlap on keyspace so some concurrent operations + filterScan Run scan test using a filter to find a specific row based on it's value (make sure to use --rows=20) + increment Increment on each row; clients overlap on keyspace so some concurrent operations + randomRead Run random read test +.... +Examples: +... + To run 10 clients doing increments over ten rows: + $ bin/hbase org.apache.hadoop.hbase.PerformanceEvaluation --rows=10 --nomapred increment 10 + +Removed IncrementPerformanceTest. It is not as configurable as the additions made here. + + +--- + +* [HBASE-15218](https://issues.apache.org/jira/browse/HBASE-15218) | *Blocker* | **On RS crash and replay of WAL, loosing all Tags in Cells** + +This issue fixes +- In case of normal WAL (Not encrypted) we were loosing all cell tags on WAL replay after an RS crash +- In case of encrypted WAL we were not even persisting Cell tags in WAL. Tags from all unflushed (to HFile) Cells will get lost even after WAL replay recovery is done. + +As we use tags for Cell level security, this fixes 2 security issues + - Cell level visibility labels security breach . Making a visibility restricted cell global readable + - Cell level ACL availability issue. A user who is cell level authorized to read this cell can not read it. It is a data loss for him. + + +--- + +* [HBASE-15129](https://issues.apache.org/jira/browse/HBASE-15129) | *Major* | **Set default value for hbase.fs.tmp.dir rather than fully depend on hbase-default.xml** + +Before HBASE-15129, if somehow hbase-default.xml is not on classpath, default values for hbase.fs.tmp.dir and hbase.bulkload.staging.dir are left empty. After HBASE-15129, default values of both properties are set to "/user/\/hbase-staging". + + +--- + +* [HBASE-14969](https://issues.apache.org/jira/browse/HBASE-14969) | *Major* | **Add throughput controller for flush** + +Adds means of throttling flush throughput. By default there is no limit; we use NoLimitThroughputController. An alternative controller, PressureAwareFlushThroughputController, allows specifying throughput bounds. A new simple factor, flush pressure, influences throughput. See PressureAwareFlushThroughputController.java class for detail. + + +--- + +* [HBASE-11425](https://issues.apache.org/jira/browse/HBASE-11425) | *Major* | **Cell/DBB end-to-end on the read-path** + +For E2E off heaped read path, first of all there should be an off heap backed BucketCache(BC). Configure 'hbase.bucketcache.ioengine' to offheap in hbase-site.xml. Also specify the total capacity of the BC using hbase.bucketcache.size config. Please remember to adjust value of 'HBASE\_OFFHEAPSIZE' in hbase-env.sh as per this capacity. Here-by we specify the max possible off-heap memory allocation for the RS java process. So this should be bigger than the off-heap BC size. Please keep in mind that there is no default for hbase.bucketcache.ioengine which means the BC is turned OFF by default. + +Next thing to tune is the ByteBuffer pool in the RPC server side. The buffers from this pool will be used to accumulate the cell bytes and create a result cell block to send back to the client side. 'hbase.ipc.server.reservoir.enabled' can be used to turn this pool ON or OFF. By default this pool is ON and available. HBase will create off heap ByteBuffers and pool them. Please make sure not to turn this OFF if you want E2E off heaping in read path. If this pool is turned off, the server will create temp buffers on heap to accumulate the cell bytes and make a result cell block. This can impact the GC on a highly read loaded server. The user can tune this pool with respect to how many buffers are in the pool and what should be the size of each ByteBuffer. +Use the config 'hbase.ipc.server.reservoir.initial.buffer.size' to tune each of the buffer sizes. Defaults is 64 KB. + +When the read pattern is a random row read and each of the rows are smaller in size compared to this 64 KB, try reducing this. When the result size is larger than one ByteBuffer size, the server will try to grab more than one buffer and make a result cell block out of these. When the pool is running out of buffers, the server will end up creating temporary on-heap buffers. + +The maximum number of ByteBuffers in the pool can be tuned using the config 'hbase.ipc.server.reservoir.initial.max'. Its value defaults to 64 \* region server handlers configured (See the config 'hbase.regionserver.handler.count'). The math is such that by default we consider 2 MB as the result cell block size per read result and each handler will be handling a read. For 2 MB size, we need 32 buffers each of size 64 KB (See default buffer size in pool). So per handler 32 ByteBuffers(BB). We allocate twice this size as the max BBs count such that one handler can be creating the response and handing it to the RPC Responder thread and then handling a new request creating a new response cell block (using pooled buffers). Even if the responder could not send back the first TCP reply immediately, our count should allow that we should still have enough buffers in our pool without having to make temporary buffers on the heap. Again for smaller sized random row reads, tune this max count. There are lazily created buffers and the count is the max count to be pooled. + +The setting for HBASE\_OFFHEAPSIZE in hbase-env.sh should consider this off heap buffer pool at the RPC side also. We need to config this max off heap size for RS as a bit higher than the sum of this max pool size and the off heap cache size. The TCP layer will also need to create direct bytebuffers for TCP communication. Also the DFS client will need some off-heap to do its workings especially if short-circuit reads are configured. Allocating an extra of 1 - 2 GB for the max direct memory size has worked in tests. + +If you still see GC issues even after making E2E read path off heap, look for issues in the appropriate buffer pool. Check the below RS log with INFO level: + + "Pool already reached its max capacity : XXX and no free buffers now. Consider increasing the value for 'hbase.ipc.server.reservoir.initial.max' ?" + +If you are using co processors and refer the Cells in the read results, DO NOT store reference to these Cells out of the scope of the CP hook methods. Some times the CPs need store info about the cell (Like its row key) for considering in the next CP hook call etc. For such cases, pls clone the required fields of the entire Cell as per the use cases. [ See CellUtil#cloneXXX(Cell) APIs ] + + +--- + +* [HBASE-15145](https://issues.apache.org/jira/browse/HBASE-15145) | *Major* | **HBCK and Replication should authenticate to zookepeer using server principal** + +Added a new command line argument: --auth-as-server to enable authenticating to ZooKeeper as the HBase Server principal. This is required for secure clusters for doing replication operations like add\_peer, list\_peers, etc until HBASE-11392 is fixed. This advanced option can also be used for manually fixing secure znodes. + +Commands can now be invoked like: +hbase --auth-as-server shell +hbase --auth-as-server zkcli + +HBCK in secure setup also needs to authenticate to ZK using servers principals.This is turned on by default (no need to pass additional argument). + +When authenticating as server, HBASE\_SERVER\_JAAS\_OPTS is concatenated to HBASE\_OPTS if defined in hbase-env.sh. Otherwise, HBASE\_REGIONSERVER\_OPTS is concatenated. + + +--- + +* [HBASE-15125](https://issues.apache.org/jira/browse/HBASE-15125) | *Major* | **HBaseFsck's adoptHdfsOrphan function creates region with wrong end key boundary** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-13082](https://issues.apache.org/jira/browse/HBASE-13082) | *Major* | **Coarsen StoreScanner locks to RegionScanner** + +After this JIRA we will not be doing any scanner reset after compaction during a course of a scan. The files that were compacted will still be continued to be used in the scan process. The compacted files will be archived by a background thread that runs every 2 mins by default only when there are no active scanners on those comapcted files. The above duration can be controlled using the knob 'hbase.hfile.compactions.cleaner.interval'. + + +--- + +* [HBASE-14865](https://issues.apache.org/jira/browse/HBASE-14865) | *Major* | **Support passing multiple QOPs to SaslClient/Server via hbase.rpc.protection** + +With this patch, hbase.rpc.protection can now take multiple comma-separate QOP values. Accepted QOP values remain unchanged and are 'authentication', 'integrity', and 'privacy'. Server or client can use this configuration to specify their preference (in decreasing order) while negotiating QOP. +This feature can be used to upgrade or downgrade QOP in an online cluster without compromising availability (i.e. taking cluster offline). For e.g. to change qop from A to B, typical steps would be: +"A" --\> "B,A" --\> rolling restart --\> "B" --\> rolling restart + +Sidenote: Based on experimentation, server's choice is given higher preference than client's choice. i.e. if server's choices are "A,B,C" and client's choices are "B,C,A", both A and B are acceptable, but A is chosen. + + +--- + +* [HBASE-15098](https://issues.apache.org/jira/browse/HBASE-15098) | *Blocker* | **Normalizer switch in configuration is not used** + +The config parameter, hbase.normalizer.enabled, has been dropped since it is not used in the code base. + + +--- + +* [HBASE-15111](https://issues.apache.org/jira/browse/HBASE-15111) | *Trivial* | **"hbase version" should write to stdout** + +The \`hbase version\` command now outputs directly to stdout rather than to a logger. This change allows the version information to be output consistently regardless of logger configuration. Naturally, this also means the command output ignores all logger configuration. Furthermore, the move from loggers to direct output changes the output of the command to omit metadata commonly included in logger ouput such as a timestamp, log level, and logger name. + + +--- + +* [HBASE-15027](https://issues.apache.org/jira/browse/HBASE-15027) | *Major* | **Refactor the way the CompactedHFileDischarger threads are created** + +The property 'hbase.hfile.compactions.discharger.interval' has been renamed to 'hbase.hfile.compaction.discharger.interval' that describes the interval after which the compaction discharger chore service should run. +The property 'hbase.hfile.compaction.discharger.thread.count' describes the thread count that does the compaction discharge work. +The CompactedHFilesDischarger is a chore service now started as part of the RegionServer and this chore service iterates over all the onlineRegions in that RS and uses the RegionServer's executor service to launch a set of threads that does this job of compaction files clean up. + + +--- + +* [HBASE-14468](https://issues.apache.org/jira/browse/HBASE-14468) | *Major* | **Compaction improvements: FIFO compaction policy** + +FIFO compaction policy selects only files which have all cells expired. The column family MUST have non-default TTL. +Essentially, FIFO compactor does only one job: collects expired store files. + +Because we do not do any real compaction, we do not use CPU and IO (disk and network), we do not evict hot data from a block cache. The result: improved throughput and latency both write and read. +See: https://github.com/facebook/rocksdb/wiki/FIFO-compaction-style + + +--- + +* [HBASE-14888](https://issues.apache.org/jira/browse/HBASE-14888) | *Major* | **ClusterSchema: Add Namespace Operations** + +This patch changes the semantic around namespace create/delete/modify when coprocessor asks that the invocation be by-passed. Previous the by-pass was done silently -- the method would just return with no indication as to whether by-pass route had been taken or not. This patch adds throwing of a BypassCoprocessorException which is thrown if we have been asked to bypass a call. + +The bypass facility has been in place since hbase 1.0.0 when namespace creation/deletion, etc.., was originally added in HBASE-8408 (HBASE-15071 is about addressing bypass handling in a general way) + + +--- + +* [HBASE-15018](https://issues.apache.org/jira/browse/HBASE-15018) | *Major* | **Inconsistent way of handling TimeoutException in the rpc client implementations** + +When using the new AsyncRpcClient introduced in HBase 1.1.0 (HBASE-12684), time outs now result in an IOException wrapped around a CallTimeoutException instead of a bare CallTimeoutException. This change makes the AsyncRpcClient behave the same as the default HBase 1.y RPC client implementation. + + +--- + +* [HBASE-14796](https://issues.apache.org/jira/browse/HBASE-14796) | *Minor* | **Enhance the Gets in the connector** + +spark.hbase.bulkGetSize in HBaseSparkConf is for grouping bulkGet, and default value is 1000. + + +--- + +* [HBASE-14976](https://issues.apache.org/jira/browse/HBASE-14976) | *Minor* | **Add RPC call queues to the web ui** + +Adds column displaying current aggregated call queues size in region server queues tab UI. + + +--- + +* [HBASE-14822](https://issues.apache.org/jira/browse/HBASE-14822) | *Major* | **Renewing leases of scanners doesn't work** + +And 1.1, 1.0, and 0.98. + + +--- + +* [HBASE-14205](https://issues.apache.org/jira/browse/HBASE-14205) | *Critical* | **RegionCoprocessorHost System.nanoTime() performance bottleneck** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-14978](https://issues.apache.org/jira/browse/HBASE-14978) | *Blocker* | **Don't allow Multi to retain too many blocks** + +Limiting the amount of memory resident for any one request allows the server to handle concurrent requests smoothly. To this end we added the ability to limit the size of responses to a multi request. That worked well however it correctly represent the amount of memory resident. So this issue adds on a an approximation of the number of blocks held for a request. + +All clients before 1.2.0 will not get this multi request chunking based upon blocks kept. All clients 1.2.0 and after will. + + +--- + +* [HBASE-14951](https://issues.apache.org/jira/browse/HBASE-14951) | *Minor* | **Make hbase.regionserver.maxlogs obsolete** + +Rolling WAL events across a cluster can be highly correlated, hence flushing memstores, hence triggering minor compactions, that can be promoted to major ones. These events are highly correlated in time if there is a balanced write-load on the regions in a table. Default value for maximum WAL files (\* hbase.regionserver.maxlogs\*), which controls WAL rolling events - 32 is too small for many modern deployments. +Now we calculate this value dynamically (if not defined by user), using the following formula: + +maxLogs = Math.max( 32, HBASE\_HEAP\_SIZE \* memstoreRatio \* 2/ LogRollSize), where + +memstoreRatio is \*hbase.regionserver.global.memstore.size\* +LogRollSize is maximum WAL file size (default 0.95 \* HDFS block size) + +We need to make sure that we avoid fully or minimize events when RS has to flush memstores prematurely only because it reached artificial limit of hbase.regionserver.maxlogs, this is why we put this 2 x multiplier in equation, this gives us maximum WAL capacity of 2 x RS memstore-size. + +Runaway WAL files. + +The default log rolling period (1h) allows to accumulate up to 2 X Memstore Size data in a WAL. For heap size - 32G and all other default setting, this gives ~ 26GB of data. Under heavy write load, the number of WAL files can increase dramatically. RegionServer LogRoller will be archiving old WALs periodically. User has three options, either override default hbase.regionserver.maxlogs or override default hbase.regionserver.logroll.period (decrease), or both to control runaway WALs. + +For system with bursty write load, the hbase.regionserver.logroll.period can be decreased to lower value. In this case the maximum number of wal files will be defined by the total size of memstore (unflushed data), not by the hbase.regionserver.maxlogs. But for majority of applications there will be no issues with defaults. Data will be flushed periodically from memstore, the LogRoller will archive old wal files and the system will never reach the new defaults for hbase.regionserver.maxlogs, unless the system is under extreme load for prolonged period of time, but in this case, decreasing hbase.regionserver.logroll.period allows us to control runaway wal files. + +The following table gives the new default maximum log files values for several different Region Server heap sizes: + +heap memstore perc maxLogs +1G 40% 32 +2G 40% 32 +10G 40% 80 +20G 40% 160 +32G 40% 256 + + +--- + +* [HBASE-14984](https://issues.apache.org/jira/browse/HBASE-14984) | *Major* | **Allow memcached block cache to set optimze to false** + +Setting hbase.cache.memcached.spy.optimze to true will allow the spy memcached client to try and optimize for the number of requests outstanding. This can increase throughput but can also increase variance for request times. + +Setting it to true will help when round trip times are longer. +Setting it to false ( the default ) will help ensure a more even distribution of response times. + + +--- + +* [HBASE-14534](https://issues.apache.org/jira/browse/HBASE-14534) | *Minor* | **Bump yammer/coda/dropwizard metrics dependency version** + +Updated yammer metrics to version 3.1.2 (now it's been renamed to dropwizard). API has changed quite a bit, consult https://dropwizard.github.io/metrics/3.1.0/manual/core/ for additional information. + +Note that among other things, in yammer 2.2.0 histograms were by default created in non-biased mode (uniform sampling), while in 3.1.0 histograms created via MetricsRegistry.histogram(...) are by default exponentially decayed. This shouldn't affect end users, though. + + +--- + +* [HBASE-14960](https://issues.apache.org/jira/browse/HBASE-14960) | *Major* | **Fallback to using default RPCControllerFactory if class cannot be loaded** + +If the configured RPC controller factory (via hbase.rpc.controllerfactory.class) cannot be found in the classpath or loaded, we fall back to using the default RPC controller factory in HBase. + + +--- + +* [HBASE-14946](https://issues.apache.org/jira/browse/HBASE-14946) | *Critical* | **Don't allow multi's to over run the max result size.** + +The HBase region server will now send a chunk of get responses to a client if the total response size is too large. This will only be done for clients 1.2.0 and beyond. Older clients by default will have the old behavior. + +This patch is for the case where the basic flow is like this: + +I want to get a single column from lots of rows. So I create a list of gets. Then I send them to table.get(List\). If the regions for that table are spread out then those requests get chunked out to all the region servers. No one regionserver gets too many. However if one region server contains lots of regions for that table then a multi action can contain lots of gets. No single get is too onerous. However the regionserver won't return until every get is complete. So if there are thousands of gets that are sent in one multi then the regionserver can retain lots of data in one thread. + + +--- + +* [HBASE-14906](https://issues.apache.org/jira/browse/HBASE-14906) | *Major* | **Improvements on FlushLargeStoresPolicy** + +In HBASE-14906 we use "hbase.hregion.memstore.flush.size/column\_family\_number" as the default threshold for memstore flush instead of the fixed value through "hbase.hregion.percolumnfamilyflush.size.lower.bound" property, which makes the default threshold more flexible to various use case. We also introduce a new property in name of "hbase.hregion.percolumnfamilyflush.size.lower.bound.min" with 16M as the default value to avoid small flush in cases like hundreds of column families. + +After this change setting "hbase.hregion.percolumnfamilyflush.size.lower.bound" in hbase-site.xml won't take effect anymore, but expert users could still set this property in table descriptor to override the default value just as before + + +--- + +* [HBASE-14769](https://issues.apache.org/jira/browse/HBASE-14769) | *Major* | **Remove unused functions and duplicate javadocs from HBaseAdmin** + +- Removes functions from HBaseAdmin which require table name parameter as either byte[] or String. Use their counterparts which take TableName instead. +- Removes redundant javadocs from HBaseAdmin as they will be automatically inherited from Admin interface. +- HBaseAdmin is marked Audience.private so it should have been straight forward okay to remove the functions. But HBaseTestingUtility, which is marked Audience.public had a public function returning its instance, which moved this decision into gray area. Discussing in the community, it was decided that it would be okay to do so in this particular case. + + +--- + +* [HBASE-13153](https://issues.apache.org/jira/browse/HBASE-13153) | *Major* | **Bulk Loaded HFile Replication** + +This enhances the HBase replication to support replication of bulk loaded data. This is configurable, by default it is set to false which means it will not replicate the bulk loaded data to its peer(s). To enable it set "hbase.replication.bulkload.enabled" to true. + +Following are the additional configurations added for this enhancement, + a. hbase.replication.cluster.id - This is manadatory to configure in cluster where replication for bulk loaded data is enabled. A source cluster is uniquely identified by sink cluster using this id. This should be configured in the source cluster configuration file for all the RS. + b. hbase.replication.conf.dir - This represents the directory where all the active cluster's file system client configurations are defined in subfolders corresponding to their respective replication cluster id in peer cluster. This should be configured in the peer cluster configuration file for all the RS. Default is HBASE\_CONF\_DIR. + c. hbase.replication.source.fs.conf.provider - This represents the class which provides the source cluster file system client configuration to peer cluster. This should be configured in the peer cluster configuration file for all the RS. Default is org.apache.hadoop.hbase.replication.regionserver.DefaultSourceFSConfigurationProvider + + For example: If source cluster FS client configurations are copied in peer cluster under directory /home/user/dc1/ then hbase.replication.cluster.id should be configured as dc1 and hbase.replication.conf.dir as /home/user + +Note: + a. Any modification to source cluster FS client configuration files in peer cluster side replication configuration directory then it needs to restart all its peer(s) cluster RS with default hbase.replication.source.fs.conf.provider. + b. Only 'xml' type files will be loaded by the default hbase.replication.source.fs.conf.provider. + +As part of this we have made following changes to LoadIncrementalHFiles class which is marked as Public and Stable class, + a. Raised the visibility scope of LoadQueueItem class from package private to public. + b. Added a new method loadHFileQueue, which loads the queue of LoadQueueItem into the table as per the region keys provided. + + +--- + +* [HBASE-7171](https://issues.apache.org/jira/browse/HBASE-7171) | *Major* | **Initial web UI for region/memstore/storefiles details** + +HBASE-7171 adds 2 new pages to the region server Web UI to ease debugging and provide greater insight into the physical data layout. + +Region names in UI table listing all regions (on the RS status page) are now hyperlinks leading to region detail page which shows some aggregate memstore information (currently just memory used) along with the list of all Store Files (HFiles) in the region. Names of Store Files are also hyperlinks leading to Store File detail page, which currently runs 'hbase hfile' command behind the scene and displays statistics about store file. + + +--- + +* [HBASE-14655](https://issues.apache.org/jira/browse/HBASE-14655) | *Blocker* | **Narrow the scope of doAs() calls to region observer notifications for compaction** + +Region observer notifications w.r.t. compaction request are now audited with request user through proper scope of doAs() calls. + + +--- + +* [HBASE-14631](https://issues.apache.org/jira/browse/HBASE-14631) | *Blocker* | **Region merge request should be audited with request user through proper scope of doAs() calls to region observer notifications** + +Region observer notifications w.r.t. merge request are now audited with request user through proper scope of doAs() calls. + + +--- + +* [HBASE-14605](https://issues.apache.org/jira/browse/HBASE-14605) | *Blocker* | **Split fails due to 'No valid credentials' error when SecureBulkLoadEndpoint#start tries to access hdfs** + +When split is requested by non-super user, split related notifications for Coprocessor are executed using the login of the request user. +Previously the notifications were carried out as super user. + + +--- + +* [HBASE-14926](https://issues.apache.org/jira/browse/HBASE-14926) | *Major* | **Hung ThriftServer; no timeout on read from client; if client crashes, worker thread gets stuck reading** + +Adds a timeout to server read from clients. Adds new configs hbase.thrift.server.socket.read.timeout for setting read timeout on server socket in milliseconds. Default is 60000; + + +--- + +* [HBASE-14825](https://issues.apache.org/jira/browse/HBASE-14825) | *Minor* | **HBase Ref Guide corrections of typos/misspellings** + +Corrections to content of "book.html", which is pulled from various \*.adoc files and \*.xml files. +-- corrects typos/misspellings +-- corrects incorrectly formatted links + + +--- + +* [HBASE-14821](https://issues.apache.org/jira/browse/HBASE-14821) | *Major* | **CopyTable should allow overriding more config properties for peer cluster** + +Configuration properties for org.apache.hadoop.hbase.mapreduce.TableOutputFormat can now be overridden by prefixing the property keys with "hbase.mapred.output.". When the configuration is applied to TableOutputFormat, these entries will be rewritten with the prefix removed -- ie. "hbase.mapred.output.hbase.security.authentication" becomes "hbase.security.authentication". This can be useful when directing output to a peer cluster with different security configuration, for example. + + +--- + +* [HBASE-14799](https://issues.apache.org/jira/browse/HBASE-14799) | *Critical* | **Commons-collections object deserialization remote command execution vulnerability** + +This issue resolves a potential security vulnerability. For all versions we update our commons-collections dependency to the release that fixes the reported vulnerability in that library. In 0.98 we additionally disable by default a feature of code carried from 0.94 for backwards compatibility that is not needed. + + +--- + +* [HBASE-12751](https://issues.apache.org/jira/browse/HBASE-12751) | *Major* | **Allow RowLock to be reader writer** + +Locks on row are now reader/writer rather than exclusive. + +Moves sequenceid out of HRegion and into MVCC class; MVCC is now in charge. A WAL append is still stamped in same way (we pass MVCC context in a few places where we previously we did not). + +MVCC methods cleaned up. Make a bit more sense now. Less of them. + +Simplifies our update of MemStore/WAL. Now we update memstore AFTER we add to WAL (but before we sync). This fixes possible dataloss when two edits came in with same coordinates; we could order the edits in memstore differently to how they arrived in the WAL. + +Marked as an incompatible change because it breaks Distributed Log Replay, a feature we'd determined already was unreliable and to be removed (See http://search-hadoop.com/m/YGbbhTJpoal8GD1). + + +--- + +* [HBASE-14793](https://issues.apache.org/jira/browse/HBASE-14793) | *Major* | **Allow limiting size of block into L1 block cache.** + +Very large blocks can fragment the heap and cause bad issues for the garbage collector, especially the G1GC. Now there is a maximum size that a block can be and still stick in the LruBlockCache. That size defaults to 16mb but can be controlled by changing "hbase.lru.max.block.size" + + +--- + +* [HBASE-14387](https://issues.apache.org/jira/browse/HBASE-14387) | *Major* | **Compaction improvements: Maximum off-peak compaction size** + +New configuration option: hbase.hstore.compaction.max.size.offpeak - maximum selection size eligible for minor compaction during off peak hours. +hbase.hstore.compaction.max.size - this is default maximum if no off-peak hours are defined or if no maximum off-peak maximum size is defined. + + +--- + +* [HBASE-12822](https://issues.apache.org/jira/browse/HBASE-12822) | *Minor* | **Option for Unloading regions through region\_mover.rb without Acknowledging** + +Incorporated in HBASE-13014. + + +--- + +* [HBASE-14700](https://issues.apache.org/jira/browse/HBASE-14700) | *Major* | **Support a "permissive" mode for secure clusters to allow "simple" auth clients** + +Secure HBase now supports a permissive mode to allow mixed secure and insecure clients. This allows clients to be incrementally migrated over to a secure configuration. To enable clients to continue to connect using SIMPLE authentication when the cluster is configured for security, set "hbase.ipc.server.fallback-to-simple-auth-allowed" equal to "true" in hbase-site.xml. NOTE: This setting should ONLY be used as a temporary measure while converting clients over to secure authentication. It MUST BE DISABLED for secure operation. + + +--- + +* [HBASE-14257](https://issues.apache.org/jira/browse/HBASE-14257) | *Major* | **Periodic flusher only handles hbase:meta, not other system tables** + +Memstore periodic flusher used to flush META table every 5 minutes but not any other system tables. This jira extends it to flush all system tables within this time period. + + +--- + +* [HBASE-14658](https://issues.apache.org/jira/browse/HBASE-14658) | *Major* | **Allow loading a MonkeyFactory by class name** + +You can specify one of the predefined set of Monkeys when you run Integration Tests by passing the -m\|--monkey arguments on the command line; e.g -m CALM or -m SLOW\_DETERMINISTIC + +This patch makes it so you can pass the name of a class as the monkey to run: e.g. -m org.example.KingKong + + +--- + +* [HBASE-14521](https://issues.apache.org/jira/browse/HBASE-14521) | *Major* | **Unify the semantic of hbase.client.retries.number** + +After this change, hbase.client.reties.number universally means the number of retry which is one less than total tries number, for both non-batch operations like get/scan/increment etc. which uses RpcRetryingCallerImpl#callWithRetries to submit the call or batch operations like put through AsyncProcess#submit. + +Note that previously this property means total tries number for puts, so please adjust the setting of its value if necessary. Please also be cautious when setting it to zero since retry is necessary for client cache update when region move happens. + + +--- + +* [HBASE-13819](https://issues.apache.org/jira/browse/HBASE-13819) | *Major* | **Make RPC layer CellBlock buffer a DirectByteBuffer** + +For master branch(2.0 version), the BoundedByteBufferPool always create Direct (off heap) ByteBuffers and return that. +For branch-1(1.3 version), byte default the buffers returned will be off heap. This can be changed to return on heap ByteBuffers by configuring 'hbase.ipc.server.reservoir.direct.buffer' to false. + + +--- + +* [HBASE-14517](https://issues.apache.org/jira/browse/HBASE-14517) | *Minor* | **Show regionserver's version in master status page** + +Adds server version to the listing of regionservers on the master home page. + +if a cluster where the versions deviate, at the bottom of the 'Version' column on the master home page listing of 'Region Servers', you will see a note in red that says something like: 'Total:10 9 nodes with inconsistent version' + + +--- + +* [HBASE-12911](https://issues.apache.org/jira/browse/HBASE-12911) | *Major* | **Client-side metrics** + +Introduces collection and reporting of various client-perceived metrics. Metrics are exposed via JMX under "org.apache.hadoop.hbase.client.MetricsConnection". Metrics are scoped according to connection instance, so multiple connection objects (ie, to different clusters) will report their metrics separately. Metrics are disabled by default, must be enabled by configuring "hbase.client.metrics.enable=true". + + +--- + +* [HBASE-14529](https://issues.apache.org/jira/browse/HBASE-14529) | *Major* | **Respond to SIGHUP to reload config** + +HBase daemons can now be signaled to reload their config by sending SIGHUP to the java process. Not all config parameters can be reloaded. + +In order for this new feature to work the hbase-daemon.sh script was changed to use disown rather than nohup. Functionally this shouldn't change anything but the processes will have a different parent when being run from a connected login shell. + + +--- + +* [HBASE-14502](https://issues.apache.org/jira/browse/HBASE-14502) | *Major* | **Purge use of jmock and remove as dependency** + +HBASE-14502 Purge use of jmock and remove as dependency + + +--- + +* [HBASE-14544](https://issues.apache.org/jira/browse/HBASE-14544) | *Major* | **Allow HConnectionImpl to not refresh the dns on errors** + +By setting hbase.resolve.hostnames.on.failure to false you can reduce the number of dns name resolutions that a client will do. However if machines leave and come back with different ip's the changes will not be noticed by the clients. So only set hbase.resolve.hostnames.on.failure to false if your cluster dns is not changing while clients are connected. + + +--- + +* [HBASE-14367](https://issues.apache.org/jira/browse/HBASE-14367) | *Major* | **Add normalization support to shell** + +This patch adds shell support for region normalizer (see HBASE-13103). + +3 commands have been added to hbase shell 'tools' command group (modeled on how the balancer works): + + - 'normalizer\_enabled' checks whether region normalizer is turned on + - 'normalizer\_switch' allows user to turn normalizer on and off + - 'normalize' runs region normalizer if it's turned on. + +Also 'alter' command has been extended to allow user to enable/disable region normalization per table (disabled by default). Use it as + +alter 'testtable', {NORMALIZATION\_MODE =\> 'true'} + +Here is the help for the normalize command: + +{code} +hbase(main):008:0\> help 'normalize' +Trigger region normalizer for all tables which have NORMALIZATION\_MODE flag set. Returns true + if normalizer ran successfully, false otherwise. Note that this command has no effect + if region normalizer is disabled (make sure it's turned on using 'normalizer\_switch' command). + + Examples: + + hbase\> normalize +{code} + + +--- + +* [HBASE-14475](https://issues.apache.org/jira/browse/HBASE-14475) | *Major* | **Region split requests are always audited with "hbase" user rather than request user** + +Region observer notifications w.r.t. split request are now audited with request user through proper scope of doAs() calls. + + +--- + +* [HBASE-14230](https://issues.apache.org/jira/browse/HBASE-14230) | *Minor* | **replace reflection in FSHlog with HdfsDataOutputStream#getCurrentBlockReplication()** + +Remove calling getNumCurrentReplicas on HdfsDataOutputStream via reflection. getNumCurrentReplicas showed up in hadoop 1+ and hadoop 0.2x. In hadoop-2 it was deprecated. + + +--- + +* [HBASE-14495](https://issues.apache.org/jira/browse/HBASE-14495) | *Major* | **TestHRegion#testFlushCacheWhileScanning goes zombie** + +The WAL append was changed by HBASE-12751. Every append now sets a latch on an edit. The latch needs to be cleared or else the WAL will hang. The original failures in TestHRegion turned up 'holes' where we were failing to throw the latch if we skipped out early because we were interrupted. Other 'holes' were found where we had mocked up a WAL so the latch would just stay in place. Futher holes were found appending WAL markers... here we were skipping the mvcc completely for a few edits. A clean up of WALUtils made all markers take the same code paths. + + +--- + +* [HBASE-14280](https://issues.apache.org/jira/browse/HBASE-14280) | *Minor* | **Bulk Upload from HA cluster to remote HA hbase cluster fails** + +Patch will effectively work with Hadoop version 2.6 or greater with a launch of "internal.nameservices". +There will be no change in versions older than 2.6. + + +--- + +* [HBASE-14334](https://issues.apache.org/jira/browse/HBASE-14334) | *Major* | **Move Memcached block cache in to it's own optional module.** + +Move external block cache to it's own module. This will reduce dependencies for people who use hbase-server. +Currently Memcached is the reference implementation for external block cache. External block caches allow HBase to take advantage of other more complex caches that can live longer than the HBase regionserver process and are not necessarily tied to a single computer + life time. However external block caches add in extra operational overhead. + + +--- + +* [HBASE-14433](https://issues.apache.org/jira/browse/HBASE-14433) | *Major* | **Set down the client executor core thread count from 256 in tests** + +Tests run with client executors that have core thread count of 4 and a keepalive of 3 seconds. They used to default to 256 core threads and 60 seconds for keepalive. + + +--- + +* [HBASE-14400](https://issues.apache.org/jira/browse/HBASE-14400) | *Critical* | **Fix HBase RPC protection documentation** + +To use rpc protection in HBase, set the value of 'hbase.rpc.protection' to: +'authentication' : simple authentication using kerberos +'integrity' : authentication and integrity +'privacy' : authentication and confidentiality + +Earlier, HBase reference guide erroneously mentioned in some places to set the value to 'auth-conf'. This patch fixes the guide and adds temporary support for erroneously recommended values. + + +--- + +* [HBASE-14306](https://issues.apache.org/jira/browse/HBASE-14306) | *Major* | **Refine RegionGroupingProvider: fix issues and make it more scalable** + +In HBASE-14306 we've changed default strategy of RegionGroupingProvider from "identify" to "bounded", so it's required to explicitly set "hbase.wal.regiongrouping.strategy" to "identify" if user still wants to use one WAL per region + +Please also notice that in the new framework there will be one WAL per group, and the region-group mapping is decided by RegionGroupingStrategy. Accordingly, we've removed BoundedRegionGroupingProvider and added BoundedRegionGroupingStrategy as a replacement. If you already have a customized class for hbase.wal.regiongrouping.strategy, please check the new logic and make updates if necessary. + + +--- + +* [HBASE-6617](https://issues.apache.org/jira/browse/HBASE-6617) | *Major* | **ReplicationSourceManager should be able to track multiple WAL paths** + +ReplicationSourceManager now could track multiple wal paths. Notice that although most changes are internal and all metrics names remain the same, signature of below methods in MetricsSource are changed: + +1. refreshAgeOfLastShippedOp now requires a String parameter which indicates the wal group id of the reporter +2. setAgeOfLastShippedOp also adds a String parameter for wal group id + + +--- + +* [HBASE-14314](https://issues.apache.org/jira/browse/HBASE-14314) | *Major* | **Metrics for block cache should take region replicas into account** + +The following metrics for primary region replica are added: + +blockCacheHitCountPrimary +blockCacheMissCountPrimary +blockCacheEvictionCountPrimary + + +--- + +* [HBASE-14317](https://issues.apache.org/jira/browse/HBASE-14317) | *Blocker* | **Stuck FSHLog: bad disk (HDFS-8960) and can't roll WAL** + +Tighten up WAL-use semantic. + +1. If an append or a sync throws an exception, all subsequent attempts at using the log will also throw this same exception. The WAL is now a lame-duck until you roll it. +2. If a successful append, and then we fail to sync the append, this is a fatal exception. The container must abort to replay the WAL logs even though we have told the client that the appends failed. + +The above rules have been applied laxly up to this; it used to be possible to get a good sync to go in over the top of a failed append. This has been fixed in this patch. + +Also fixed a hang in the WAL subsystem if a request to pause the write pipeline took on a failed sync. before the roll requests sync got scheduled. + + +TODO: Revisit our WAL system. HBASE-12751 helps rationalize our write pipeline. In particular, it manages sequenceid inside mvcc which should make it so we can purge mechanism that writes empty, unflushed appends just to get the next sequenceid... problematic when WAL goes lame-duck. Lets get it in. +TODO: A successful append followed by a failed sync probably only needs us replace the WAL (if we have signalled the client that the appends failed). Bummer is that replicating, these last appends might make it to the sink cluster or get replayed during recovery. HBase should keep its own WAL length? Or sequenceid of last successful sync should be passed when doing recovery and replication? + + +--- + +* [HBASE-14261](https://issues.apache.org/jira/browse/HBASE-14261) | *Major* | **Enhance Chaos Monkey framework by adding zookeeper and datanode fault injections.** + +This change augments existing chaos monkey framework with actions for restarting underlying zookeeper quorum and hdfs nodes of distributed hbase cluster. One assumption made while creating zk actions are that zookeper ensemble is an independent external service and won't be managed by hbase cluster. For these actions to work as expected, the following parameters need to be configured appropriately. + +{code} +\ + \hbase.it.clustermanager.hadoop.home\ + \$HADOOP\_HOME\ +\ +\ + \hbase.it.clustermanager.zookeeper.home\ + \$ZOOKEEPER\_HOME\ +\ +\ + \hbase.it.clustermanager.hbase.user\ + \hbase\ +\ +\ + \hbase.it.clustermanager.hadoop.hdfs.user\ + \hdfs\ +\ +\ + \hbase.it.clustermanager.zookeeper.user\ + \zookeeper\ +\ +{code} + +The service user related configurations are newly introduced since in prod/test environments each service is managed by different user. Once the above parameters are configured properly, you can start using them as needed. An example usage for invoking these new actions is: + +{{./hbase org.apache.hadoop.hbase.IntegrationTestAcidGuarantees -m serverAndDependenciesKilling}} + + +--- + +* [HBASE-14309](https://issues.apache.org/jira/browse/HBASE-14309) | *Major* | **Allow load balancer to operate when there is region in transition by adding force flag** + +This issue adds boolean parameter, force, to 'balancer' command so that admin can force region balancing even when there is region (other than hbase:meta) in transition - assuming RIT being transient. +If hbase:meta is in transition, balancer command returns false. + +WARNING: For experts only. Forcing a balance may do more damage than repair when assignment is confused +Note: enclose the force parameter in double quotes + + +--- + +* [HBASE-14313](https://issues.apache.org/jira/browse/HBASE-14313) | *Critical* | **After a Connection sees ConnectionClosingException it never recovers** + +HConnection could get stuck when talking to a host that went down and then returned. This has been fixed by closing the connection in all paths. + + +--- + +* [HBASE-13339](https://issues.apache.org/jira/browse/HBASE-13339) | *Blocker* | **Update default Hadoop version to latest for master** + +Master/2.0.0 now builds on the latest stable hadoop by default. + + +--- + +* [HBASE-14224](https://issues.apache.org/jira/browse/HBASE-14224) | *Critical* | **Fix coprocessor handling of duplicate classes** + +Prevent Coprocessors being doubly-loaded; a particular coprocessor can only be loaded once. + + +--- + +* [HBASE-13127](https://issues.apache.org/jira/browse/HBASE-13127) | *Major* | **Add timeouts on all tests so less zombie sightings** + +Use junit facility to impose timeout on test. Use test category to chose which timeout to apply: small tests timeout after 30 seconds, medium tests after 180 seconds, and large tests after ten minutes. + +Updated junit version from 4.11 to 4.12. 4.12 has support for feature used here. + +Add this at the head of your junit4 class to add a category-based timeout: + +{code} +@Rule public final TestRule timeout = CategoryBasedTimeout.builder().withTimeout(this.getClass()). + withLookingForStuckThread(true).build(); +{code} + +For example: + + +--- + +* [HBASE-14148](https://issues.apache.org/jira/browse/HBASE-14148) | *Major* | **Web UI Framable Page** + +Security fix: Adds protection from clickjacking using X-Frame-Options header. +This will prevent use of HBase UI in frames. To disable this feature, set the configuration 'hbase.http.filter.xframeoptions.mode' to 'ALLOW' (default is 'DENY'). + + +--- + +* [HBASE-10844](https://issues.apache.org/jira/browse/HBASE-10844) | *Major* | **Coprocessor failure during batchmutation leaves the memstore datastructs in an inconsistent state** + +Promotes an -ea assert to logged FATAL and RS abort when memstore is found to be in an inconsistent state. + + +--- + +* [HBASE-13966](https://issues.apache.org/jira/browse/HBASE-13966) | *Minor* | **Limit column width in table.jsp** + +Wraps region, start key, end key columns if too long. + + +--- + +* [HBASE-13706](https://issues.apache.org/jira/browse/HBASE-13706) | *Minor* | **CoprocessorClassLoader should not exempt Hive classes** + +Starting from HBase 2.0, CoprocessorClassLoader will not exempt hadoop classes or zookeeper classes. This means that if the custom coprocessor jar contains hadoop or zookeeper packages and classes, they will be loaded by the CoprocessorClassLoader. Only hbase packages and classes are exempted from the CoprocessorClassLoader. They (and their dependencies) are loaded by the parent server class loader. + + +--- + +* [HBASE-14054](https://issues.apache.org/jira/browse/HBASE-14054) | *Major* | **Acknowledged writes may get lost if regionserver clock is set backwards** + +In {{checkAndPut}} write path use max(max timestamp for the row, System.currentTimeMillis()) in the, instead of blindly taking System.currentTimeMillis() to ensure that checkAndPut() cannot do writes which is already eclipsed. This is similar to what has been done in HBASE-12449 for increment and append. + + +--- + +* [HBASE-13985](https://issues.apache.org/jira/browse/HBASE-13985) | *Minor* | **Add configuration to skip validating HFile format when bulk loading** + +A new config, hbase.loadincremental.validate.hfile , is introduced - default to true +When set to false, checking hfile format is skipped during bulkloading. + + +--- + +* [HBASE-14201](https://issues.apache.org/jira/browse/HBASE-14201) | *Major* | **hbck should not take a lock unless fixing errors** + +HBCK no longer takes a lock until there are changes to the cluster being made. + +The old behavior can be achieved by passing the -exclusive flag. + + +--- + +* [HBASE-14081](https://issues.apache.org/jira/browse/HBASE-14081) | *Minor* | **(outdated) references to SVN/trunk in documentation** + +HBASE-14081 Remove (outdated) references to SVN/trunk from documentation + + +--- + +* [HBASE-13865](https://issues.apache.org/jira/browse/HBASE-13865) | *Trivial* | **Increase the default value for hbase.hregion.memstore.block.multipler from 2 to 4 (part 2)** + +Increase default hbase.hregion.memstore.block.multiplier from 2 to 4 in the code to match the default value in the config files. + + +--- + +* [HBASE-12295](https://issues.apache.org/jira/browse/HBASE-12295) | *Major* | **Prevent block eviction under us if reads are in progress from the BBs** + +We try to delay the eviction of the block till the cellblocks are formed at the Rpc layer. A simple reference counting mechanism is introduced when ever a block is accessed from the Bucket cache. Once a scanner completes using a block the reference count is decremented. The eviction of the block happens only when the reference count of that block is 0. +We also introduce a concept of ShareableMemory based on the type of blocks we create from the Block cache. The blocks from the ByteBufferIOEngine directly refer to the buckets in offheap and such blocks are marked SHARED memory type. The blocks from LRU, HDFS and file mode of Bucket cache are all marked EXCLUSIVE because these blocks have their own exclusive memory. +For the CP case, any cell coming out of SHARED memory block is copied before returning the results, because CPs can use the results as its state so that eviction cannot corrupt the results. + + +--- + +* [HBASE-11339](https://issues.apache.org/jira/browse/HBASE-11339) | *Major* | **HBase MOB** + +The Moderate Object Storage (MOB) feature (HBASE-11339[1]) is modified I/O and compaction path that allows individual moderately sized values (100KB-10MB) to be stored in a way that write amplification is reduced when compared to the normal I/O path. MOB is defined in the column family and it is almost isolated with other components, the features and performance cannot be effected in normal columns. + +For more details on how to use the feature please consult the HBase Reference Guide + + +--- + +* [HBASE-13954](https://issues.apache.org/jira/browse/HBASE-13954) | *Major* | **Remove HTableInterface#getRowOrBefore related server side code** + +Removed Table#getRowOrBefore, Region#getClosestRowBefore, Store#getRowKeyAtOrBefore, RemoteHTable#getRowOrBefore apis and Thrift support for getRowOrBefore. +Also removed two coprocessor hooks preGetClosestRowBefore and postGetClosestRowBefore. +User using this api can instead use reverse scan something like below, +{code} + Scan scan = new Scan(row); + scan.setSmall(true); + scan.setCaching(1); + scan.setReversed(true); + scan.addFamily(family); +{code} +pass this scan object to the scanner and retrieve the first Result from scanner output. + + +--- + +* [HBASE-12296](https://issues.apache.org/jira/browse/HBASE-12296) | *Major* | **Filters should work with ByteBufferedCell** + +Change to support offheaping. + +Incompatible change for filters ColumnPrefixFilter and MultipleColumnPrefixFilter + +Changes parameters to filterColumn so takes a Cell rather than a byte []. + +hbase-client-1.2.7-SNAPSHOT.jar, ColumnPrefixFilter.class +package org.apache.hadoop.hbase.filter +ColumnPrefixFilter.filterColumn ( byte[ ] buffer, int qualifierOffset, int qualifierLength ) : Filter.ReturnCode +org/apache/hadoop/hbase/filter/ColumnPrefixFilter.filterColumn:([BII)Lorg/apache/hadoop/hbase/filter/Filter$ReturnCode; + +Ditto for filterColumnValue in SingleColumnValueFilter. Takes a Cell instead of byte array. + + +--- + +* [HBASE-14045](https://issues.apache.org/jira/browse/HBASE-14045) | *Major* | **Bumping thrift version to 0.9.2.** + +This changes upgrades thrift dependency of HBase to 0.9.2. Though this doesn't break any HBase compatibility promises, it might impact any downstream projects that share thrift dependency with HBase. + + +--- + +* [HBASE-14027](https://issues.apache.org/jira/browse/HBASE-14027) | *Major* | **Clean up netty dependencies** + +HBase's convenience binary artifact no longer contains the netty 3.2.4 jar . This jar was not directly used by HBase, but may have been relied on by downstream applications. + + +--- + +* [HBASE-7782](https://issues.apache.org/jira/browse/HBASE-7782) | *Minor* | **HBaseTestingUtility.truncateTable() not acting like CLI** + +HBaseTestingUtility now uses the truncate API added in HBASE-8332 so that calls to HBTU.truncateTable will behave like the shell command: effectively dropping the table and recreating a new one with the same split points. + +Previously, HBTU.truncateTable instead issued deletes for all the data already in the table. If you wish to maintain the same behavior, you should use the newly added HBTU.deleteTableData method. + + +--- + +* [HBASE-14047](https://issues.apache.org/jira/browse/HBASE-14047) | *Major* | **Cleanup deprecated APIs from Cell class** + +The following API from Cell (which were deprecated since past few major versions) are removed now. +getRow +getFamily +getQualifier +getValue +getMvccVersion +The above apis can be replaced with their respective CellUtil#cloneXXX (allocates a copy) or Cell#getXXXArray (essentially just returns a pointer) based on the use case. + + +--- + +* [HBASE-14029](https://issues.apache.org/jira/browse/HBASE-14029) | *Major* | **getting started for standalone still references hadoop-version-specific binary artifacts** + +HBASE-14029 Correct documentation for Hadoop version specific artifacts + + +--- + +* [HBASE-13849](https://issues.apache.org/jira/browse/HBASE-13849) | *Major* | **Remove restore and clone snapshot from the WebUI** + +The HBase master status web page no longer allows operators to clone snapshots nor restore snapshots. + + +--- + +* [HBASE-13646](https://issues.apache.org/jira/browse/HBASE-13646) | *Major* | **HRegion#execService should not try to build incomplete messages** + +When RegionServerCoprocessors throw an exception we will no longer attempt to build an incomplete RPC response message. Instead, the response message will be null. + + +--- + +* [HBASE-13639](https://issues.apache.org/jira/browse/HBASE-13639) | *Major* | **SyncTable - rsync for HBase tables** + +Tool to sync two tables that tries to send the differences only like rsync. + +Adds two new MapReduce jobs, SyncTable and HashTable. See usage for these jobs on how to use. See design doc for generally overview: https://docs.google.com/document/d/1-2c9kJEWNrXf5V4q\_wBcoIXfdchN7Pxvxv1IO6PW0-U/edit + +From comments below, "It can be challenging to run against a table getting live writes, if those writes are updates/overwrites. In general, you can run it against a time range to ignore new writes, but if those writes update existing cells, then the time range scan may or may not see older versions of those cells depending on whether major compaction has happened, which may be different in remote clusters." + + +--- + +* [HBASE-13895](https://issues.apache.org/jira/browse/HBASE-13895) | *Critical* | **DATALOSS: Region assigned before WAL replay when abort** + +If the master went to assign a region concurrent with a RegionServer abort, the returned RegionServerAbortedException was being handled as though the region had been cleanly offlined so assign was allowed proceed. If the region was opened in its new location before WAL replay completion, the replayed edits were ignored, worst case, or were later played over the top of edits that had come in since open and so susceptible to overwrite. In either case, DATALOSS. + + +--- + +* [HBASE-13983](https://issues.apache.org/jira/browse/HBASE-13983) | *Minor* | **Doc how the oddball HTable methods getStartKey, getEndKey, etc. will be removed in 2.0.0** + +Adds extra doc on getStartKeys, getEndKeys, and getStartEndKeys in HTable explaining that they will be removed in 2.0.0 (these methods did not get the proper full major version deprecation cycle). + +In this issue, we actually also remove these methods in master/2.0.0 branch. + + +--- + +* [HBASE-13747](https://issues.apache.org/jira/browse/HBASE-13747) | *Critical* | **Promote Java 8 to "yes" in support matrix** + +Java 8 is considered supported and tested as of HBase 1.2+ + + +--- + +* [HBASE-13959](https://issues.apache.org/jira/browse/HBASE-13959) | *Critical* | **Region splitting uses a single thread in most common cases** + +The performance of region splitting has been improved by using a thread pool to split the store files concurrently. Prior to this change, the store files were always split sequentially in a single thread, so a region with multiple store files ended up taking several seconds. The thread pool is sized dynamically with the aim of getting maximum concurrency, without exceeding the number of cores available for HBase Java process. A lower limit for the thread pool can be explicitly set using the property hbase.regionserver.region.split.threads.max. + + +--- + +* [HBASE-13930](https://issues.apache.org/jira/browse/HBASE-13930) | *Major* | **Exclude Findbugs packages from shaded jars** + +Exclude Findbugs packages from shaded jars + + +--- + +* [HBASE-13214](https://issues.apache.org/jira/browse/HBASE-13214) | *Major* | **Remove deprecated and unused methods from HTable class** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-13869](https://issues.apache.org/jira/browse/HBASE-13869) | *Trivial* | **Fix typo in HBase book** + +Fix typo in HBase book + + +--- + +* [HBASE-13938](https://issues.apache.org/jira/browse/HBASE-13938) | *Major* | **Deletes done during the region merge transaction may get eclipsed** + +Use the master's timestamp when sending hbase:meta edits on region merge to ensure proper ordering of new region addition and old region deletes. + + +--- + +* [HBASE-13898](https://issues.apache.org/jira/browse/HBASE-13898) | *Minor* | **correct additional javadoc failures under java 8** + +Correct Javadoc generation errors + + +--- + +* [HBASE-13103](https://issues.apache.org/jira/browse/HBASE-13103) | *Major* | **[ergonomics] add region size balancing as a feature of master** + +This patch adds optional ability for HMaster to normalize regions in size (disabled by default, change hbase.normalizer.enabled property to true to turn it on). If enabled, HMaster periodically (every 30 minutes by default) monitors tables for which normalization is enabled in table configuration and performs splits/merges as seems appropriate. Users may implement their own normalization strategies by implementing RegionNormalizer interface and configuring it in hbase-site.xml. + + +--- + +* [HBASE-13900](https://issues.apache.org/jira/browse/HBASE-13900) | *Minor* | **duplicate methods between ProtobufMagic and ProtobufUtil** + +Use ProtobufMagic methods in ProtobufUtil + + +--- + +* [HBASE-13843](https://issues.apache.org/jira/browse/HBASE-13843) | *Trivial* | **Fix internal constant text in ReplicationManager.java** + +In previous versions of HBase, the ReplicationAdmin utility erroneously used the string key "columnFamlyName" when listing replicated column families. It now uses the corrected spelling of "columnFamilyName" (note the added "i"). + +Downstream code that parsed the replication entries returned from listReplicated will need to be updated to use the new key. Previously compiled code that relied on the static CFNAME member of ReplicationAdmin will need to be recompiled in order to see the updated value. + + +--- + +* [HBASE-13886](https://issues.apache.org/jira/browse/HBASE-13886) | *Major* | **Return empty value when the mob file is corrupt instead of throwing exceptions** + +By default the Get/Scan will throw Exception when it is not able to find a mob cell because the mob file is missing/corrupted. This jira adds a facility to continue scan/get and get other cells with mob cell value as empty. Set an attribute MobConstants.EMPTY\_VALUE\_ON\_MOBCELL\_MISS = true in Scan/Get for getting this behaviour + + +--- + +* [HBASE-13686](https://issues.apache.org/jira/browse/HBASE-13686) | *Major* | **Fail to limit rate in RateLimiter** + +As per this jira contribution. We now support two kinds of RateLimiter. +1) org.apache.hadoop.hbase.quotas.AverageIntervalRateLimiter : This limiter will refill resources at every TimeUnit/resources interval. +Example: For a limiter configured with 10resources/second, then 1resource will be refilled after every 100ms. + +2) org.apache.hadoop.hbase.quotas.FixedIntervalRateLimiter: This limiter will refill resources only after a given fixed interval of time. + +Client can configure anyone of this rate limiter for the cluster by setting the value for the property "hbase.quota.rate.limiter" in the hbase-site.xml. org.apache.hadoop.hbase.quotas.AverageIntervalRateLimiter is the default value. +Note: Client needs to restart the cluster for the configuration to take into effect. + + +--- + +* [HBASE-13816](https://issues.apache.org/jira/browse/HBASE-13816) | *Major* | **Build shaded modules only in release profile** + +hbase-shaded-client and hbase-shaded-server modules will not build the actual jars unless -Prelease is supplied in mvn. + + +--- + +* [HBASE-13754](https://issues.apache.org/jira/browse/HBASE-13754) | *Major* | **Allow non KeyValue Cell types also to oswrite** + +This jira has removed the already deprecated method +KeyValue#oswrite(final KeyValue kv, final OutputStream out) + + +--- + +* [HBASE-13375](https://issues.apache.org/jira/browse/HBASE-13375) | *Major* | **Provide HBase superuser higher priority over other users in the RPC handling** + +This JIRA modifies the signature of PriorityFunction#getPriority() method to also take request user as a parameter; all RPC requests sent by super users (as determined by cluster configuration) are executed with Admin QoS. + + +--- + +* [HBASE-5980](https://issues.apache.org/jira/browse/HBASE-5980) | *Minor* | **Scanner responses from RS should include metrics on rows/KVs filtered** + +Adds scan metrics to the result. In the shell, set the ALL\_METRICS attribute to true on your scan to see dump of metrics after results (see the scan help for examples). + +If you would prefer to see only a subset of the metrics, the METRICS array can be defined to include the names of only the metrics you care about. + + +--- + +* [HBASE-13698](https://issues.apache.org/jira/browse/HBASE-13698) | *Major* | **Add RegionLocator methods to Thrift2 proxy.** + +Added getRegionLocation and getAllRegionLocations to the thrift2 interface. + + +--- + +* [HBASE-13636](https://issues.apache.org/jira/browse/HBASE-13636) | *Major* | **Remove deprecation for HBASE-4072 (Reading of zoo.cfg)** + +Purge support for parsing zookeepers zoo.cfg deprecated since hbase-0.96.0 + + +--- + +* [HBASE-13071](https://issues.apache.org/jira/browse/HBASE-13071) | *Major* | **Hbase Streaming Scan Feature** + +MOTIVATION + +A pipelined scan API is introduced for speeding up applications that combine massive data traversal with compute-intensive processing. Traditional HBase scans save network trips through prefetching the data to the client side cache. However, they prefetch synchronously: the fetch request to regionserver is invoked only when the entire cache is consumed. This leads to a stop-and-wait access pattern, in which the client stalls until the next chunk of data is fetched. Applications that do significant processing can benefit from background data prefetching, which eliminates this bottleneck. The pipelined scan implementation overlaps the cache population at the client side with application processing. Namely, it issues a new scan RPC when the iteration retrieves 50% of the cache. If the application processing (that is, the time between invocations of next()) is substantial, the new chunk of data will be available before the previous one is exhausted, and the client will not experience any delay. Ideally, the prefetch and the processing times should be balanced. + +API AND CONFIGURATION + +Asynchronous scanning can be configured either globally for all tables and scans, or on per-scan basis via a new Scan class API. + +Configuration in hbase-site.xml: hbase.client.scanner.async.prefetch, default false: + + \ + \hbase.client.scanner.async.prefetch\ + \true\ + \ + +API - Scan#setAsyncPrefetch(boolean) + + Scan scan = new Scan(); + scan.setCaching(1000); + scan.setMaxResultSize(BIG\_SIZE); + scan.setAsyncPrefetch(true); + ... + ResultScanner scanner = table.getScanner(scan); + +IMPLEMENTATION NOTES + +Pipelined scan is implemented by a new ClientAsyncPrefetchScanner class, which is fully API-compatible with the synchronous ClientSimpleScanner. ClientAsyncPrefetchScanner is not instantiated in case of small (Scan#setSmall) and reversed (Scan#setReversed) scanners. The application is responsible for setting the prefetch size in a way that the prefetch time and the processing times are balanced. Note that due to double buffering, the client side cache can use twice as much memory as the synchronous scanner. + +Generally, this feature will put more load on the server (higher fetch rate -- which is the whole point). Also, YMMV. + + +--- + +* [HBASE-13533](https://issues.apache.org/jira/browse/HBASE-13533) | *Trivial* | **section on configuring ~/.m2/settings.xml has no anchor** + +Correct setting.xml anchor in book + + +--- + +* [HBASE-13625](https://issues.apache.org/jira/browse/HBASE-13625) | *Major* | **Use HDFS for HFileOutputFormat2 partitioner's path** + +Introduces a new config hbase.fs.tmp.dir which is a directory in HDFS (or default file system) to use as a staging directory for HFileOutputFormat2. This is also used as the default for hbase.bulkload.staging.dir + + +--- + +* [HBASE-10800](https://issues.apache.org/jira/browse/HBASE-10800) | *Major* | **Use CellComparator instead of KVComparator** + +From 2.0 branch onwards KVComparator and its subclasses MetaComparator, RawBytesComparator are all deprecated. +All the comparators are moved to CellComparator. MetaCellComparator, a subclass of CellComparator, will be used to compare hbase:meta cells. +Previously exposed static instances KeyValue.COMPARATOR, KeyValue.META\_COMPARATOR and KeyValue.RAW\_COMPARATOR are deprecated instead use CellComparator.COMPARATOR and CellComparator.META\_COMPARATOR. +Also note that there will be no RawBytesComparator. Where ever we need to compare raw bytes use Bytes.BYTES\_RAWCOMPARATOR. +CellComparator will always operate on cells and its components, abstracting the fact that a cell can be backed by a single byte[] as opposed to how KVComparators were working. + + +--- + +* [HBASE-13333](https://issues.apache.org/jira/browse/HBASE-13333) | *Major* | **Renew Scanner Lease without advancing the RegionScanner** + +Adds a renewLease call to ClientScanner + + +--- + +* [HBASE-13564](https://issues.apache.org/jira/browse/HBASE-13564) | *Major* | **Master MBeans are not published** + +To use the coprocessor-based JMX implementation provided by HBase for Master. +Add below property in hbase-site.xml file: + +\ + \hbase.coprocessor.master.classes\ + \org.apache.hadoop.hbase.JMXListener\ +\ + +NOTE: DO NOT set \`com.sun.management.jmxremote.port\` for Java VM at the same time. + +By default, the JMX listens on TCP port 10101 for Master, we can further configure the port using below properties: + +\ + \master.rmi.registry.port\ + \61110\ +\ +\ + \master.rmi.connector.port\ + \61120\ +\ +---- + +The registry port can be shared with connector port in most cases, so you only need to configure master.rmi.registry.port. +However if you want to use SSL communication, the 2 ports must be configured to different values. + + +--- + +* [HBASE-13537](https://issues.apache.org/jira/browse/HBASE-13537) | *Major* | **Procedure V2 - Change the admin interface for async operations to return Future (incompatible with branch-1.x)** + +As we made changes to return types in asynchronous methods of Admin API, this change is going to break binary compatibility. The source compatibility is kept intact though. The applications running against this change needs to be recompiled to keep things working. + + +--- + +* [HBASE-13517](https://issues.apache.org/jira/browse/HBASE-13517) | *Major* | **Publish a client artifact with shaded dependencies** + +HBase now provides added convenience artifacts that shade most dependencies. These jars hbase-shaded-client and hbase-shaded-server are meant to be used when dependency conflicts can not be solved any other way. The normal jars hbase-client and hbase-server should still be preferred when possible. + +Do not use hbase-shaded-server or hbase-shaded-client inside of a co-processor as bad things will happen. + + +--- + +* [HBASE-13149](https://issues.apache.org/jira/browse/HBASE-13149) | *Blocker* | **HBase MR is broken on Hadoop 2.5+ Yarn** + +In HBase 1.1.0 and above we have upgraded the version of Jackson dependencies (jackson-core-asl, jackson-mapper-asl, jackson-jaxrs and jackson-xc) from 1.8.8 to 1.9.13. This is to follow the upgrade to Jackson 1.9.13 in Hadoop 2.5 and above which causes Jackson class incompatibility for HBase as reported in HBASE-13149. Refer to HADOOP-10104 and YARN-2092 for additional information. Jackson1.9.13 is not completely backward compatible with the prior version 1.8.8 used in HBase. See the Compatibility reports attached in HBASE-13149 and http://svn.codehaus.org/jackson/trunk/release-notes/VERSION for more information. + +This upgrade does not have direct impact on HBase users and HBase applications in most cases. In the rare case where your HBase application uses Jackson directly AND your application has compatibility issue with Jackson 1.9.13, you can do the following to mitigate the problem. + +1. If you are on Hadoop 2.5 or above, and your HBase application involves running Yarn jobs, we recommend you update your application to use Jackson 1.9.13. You may be able to explore classpath isolation options (e.g. HADOOP-10893) or have your own classpath isolation strategy that works for you, but the general recommendation is that you upgrade to Jackson 1.9.13. +2. You may choose to continue using Jackson 1.8.8 and not to use Jackson 1.9.13 in your classpath. You can also choose to replace the Jackson 1.9.13 jars in $HBASE\_HOME/lib with 1.8.8 jars. It can work for you in the following cases: +a) You are on a Hadoop version earlier than Hadoop 2.5, or +b) You are on Hadoop 2.5 or above, but your HBase application does not involve running Yarn jobs. +3. You may experiment with further isolation using the shaded jars introduced with 1.1.0 via HBASE-13517. + +Note that it may not be tested or guaranteed that using Jackson 1.8.8 in $HBASE\_HOME/lib will work in future HBase releases. +It is recommended that your HBase application matches the Jackson version provided in HBase. + +In HBase 0.98.x and HBase 1.0.x, we have NOT upgraded the version of Jackson dependencies. If you are on Hadoop 2.5 or above, and your HBase application involves running Yarn jobs, you may encounter Jackson class incomparability issue, as reported in HBASE-13149. + +You can do the following to mitigate the problem: +1. Use 'hadoop jar' command to run your HBase jobs. +2. Explore classpath isolation options (e.g. HADOOP-10893) or have your own classpath isolation strategy that works for you. +3. You can also choose to replace the Jackson 1.8.8 jars in $HBASE\_HOME/lib with 1.9.13 jars from your Hadoop lib directory. We have tested HBase 0.98 with Jackson 1.9.13. + + +--- + +* [HBASE-13481](https://issues.apache.org/jira/browse/HBASE-13481) | *Major* | **Master should respect master (old) DNS/bind related configurations** + +Master now honors configuration options as was before 1.0.0 releases: +hbase.master.ipc.address +hbase.master.dns.interface +hbase.master.dns.nameserver +hbase.master.info.bindAddress +This jira also adds hbase.master.hostname parameter as an extension to HBASE-12954. + + +--- + +* [HBASE-13090](https://issues.apache.org/jira/browse/HBASE-13090) | *Major* | **Progress heartbeats for long running scanners** + +Previously, there was no way to enforce a time limit on scan RPC requests. The server would receive a scan RPC request and take as much time as it needed to accumulate enough results to reach a limit or exhaust the region. The problem with this approach was that, in the case of a very selective scan, the processing of the scan could take too long and cause timeouts client side. + +With this fix, the server will now enforce a time limit on the execution of scan RPC requests. When a scan RPC request arrives to the server, a time limit is calculated to be half of whichever timeout value is more restictive between the configurations ("hbase.client.scanner.timeout.period" and "hbase.rpc.timeout"). When the time limit is reached, the server will return whatever results it has accumulated up to that point. The results may be empty. + +To ensure that timeout checks do not occur too often (which would hurt the performance of scans), the configuration "hbase.cells.scanned.per.heartbeat.check" has been introduced. This configuration controls how often System.currentTimeMillis() is called to update the progress towards the time limit. Currently, the default value of this configuration value is 10000. Specifying a smaller value will provide a tighter bound on the time limit, but may hurt scan performance due to the higher frequency of calls to System.currentTimeMillis(). + +Protobuf models for ScanRequest and ScanResponse have been updated so that heartbeat support can be communicated. Support for heartbeat messages is specified in the request sent to the server via ScanRequest.Builder#setClientHandlesHeartbeats. Only when the server sees that ScanRequest#getClientHandlesHeartbeats() is true will it send heartbeat messages back to the client. A response is marked as a heartbeat message via the boolean flag ScanResponse#getHeartbeatMessage + + +--- + +* [HBASE-13307](https://issues.apache.org/jira/browse/HBASE-13307) | *Major* | **Making methods under ScannerV2#next inlineable, faster** + +Made methods smaller under Scanner#next so inlinable and compilable (was getting 'too big to compile' from hotspot). Use of unsafe to parse shorts rather than use BB#getShort... faster, etc. + + +--- + +* [HBASE-13453](https://issues.apache.org/jira/browse/HBASE-13453) | *Critical* | **Master should not bind to region server ports** + +In 1.0.x, master by default binds to the region server ports (both rpc and info). This change brings back the usage of old master rpc and info ports in 1.1+ and master (2.0) branches. The motivation for this change is to ease the life of the user so that he does not need to do anything to bring up a RS on the same host and also to make the migration from 0.98 to 1.1 hassle free. However, the users going from 1.0 to 1.1 would see the change in the master ports. + + +--- + +* [HBASE-13419](https://issues.apache.org/jira/browse/HBASE-13419) | *Major* | **Thrift gateway should propagate text from exception causes.** + +Compose thrift exception text from the text of the entire cause chain of the underlying exception. + + +--- + +* [HBASE-13275](https://issues.apache.org/jira/browse/HBASE-13275) | *Major* | **Setting hbase.security.authorization to false does not disable authorization** + +Prior to this change the configuration setting 'hbase.security.authorization' had no effect if security coprocessor were installed. The act of installing the security coprocessors was assumed to indicate active authorizaton was desired and required. Now it is possible to install the security coprocessors yet have them operate in a passive state with active authorization disabled by setting 'hbase.security.authorization' to false. This can be useful but is probably not what you want. For more information, consult the Security section of the HBase online manual. + +'hbase.security.authorization' defaults to true for backwards comptatible behavior. + + +--- + +* [HBASE-13118](https://issues.apache.org/jira/browse/HBASE-13118) | *Major* | **[PE] Add being able to write many columns** + +Adds a --columns option to PE so you can write more than one column (changes default qualifier from 'data' to '0'). + + +--- + +* [HBASE-13270](https://issues.apache.org/jira/browse/HBASE-13270) | *Major* | **Setter for Result#getStats is #addResults; confusing!** + +Deprecates Result#addResults in favor of Result#setStatistics + + +--- + +* [HBASE-13362](https://issues.apache.org/jira/browse/HBASE-13362) | *Major* | **Set max result size from client only (like scanner caching).** + +This introduces a new config option: hbase.server.scanner.max.result.size +This setting enforces a maximum result size (in bytes), when reached the server will return the results is has so far. +This is a safety setting and should be kept large. The default is inifinite in 0.98 and 1.0.x and 100mb in 1.1 and later. + +Use hbase.client.scanner.max.result.size instead to enforce practical chunk sizes of a few mb (defaults to 2mb) + + +--- + +* [HBASE-11544](https://issues.apache.org/jira/browse/HBASE-11544) | *Critical* | **[Ergonomics] hbase.client.scanner.caching is dogged and will try to return batch even if it means OOME** + +Results returned from RPC calls may now be returned as partials + +When is a Result marked as a partial? +When the server must stop the scan because the max size limit has been reached. Means that the LAST Result returned within the ScanResult's Result array may be marked as a partial if the scan's max size limit caused it to stop in the middle of a row. + +Incompatible Change: The return type of InternalScanners#next and RegionScanners#nextRaw has been changed to NextState from boolean +The previous boolean return value can be accessed via NextState#hasMoreValues() +Provides more context as to what happened inside the scanner + +Scan caching default has been changed to Integer.Max\_Value +This value works together with the new maxResultSize value from HBASE-12976 (defaults to 2MB) +Results returned from server on basis of size rather than number of rows +Provides better use of network since row size varies amongst tables + +Protobuf models have changed for Result, ScanRequest, and ScanResponse to support new partial Results + +Partial Results should be invisible to application layer unless Scan#setAllowPartials is set + +Scan#setAllowPartials has been added to allow the application to request to see the partial Results returned by the server rather than have the ClientScanner form the complete Result prior to returning it to the application + +To disable the use of partial Results on the server, set ScanRequest.Builder#setClientHandlesPartials() to be false in the ScanRequest issued to server + +Partial Results should allow the server to return large rows in parts rather than accumulate all the cells for that particular row and run out of memory + + +--- + +* [HBASE-11864](https://issues.apache.org/jira/browse/HBASE-11864) | *Minor* | **Enhance HLogPrettyPrinter to print information from WAL Header** + +Enhance WALPrettyPrinter to print information (writer classnames and cell codec classname) from WAL Header + + +--- + +* [HBASE-13289](https://issues.apache.org/jira/browse/HBASE-13289) | *Major* | **typo in splitSuccessCount metric** + +In hbase 1.0.0, 0.98.10, 0.98.10.1, 0.98.11, and 0.98.12 'splitSuccessCount' was misspelled as 'splitSuccessCounnt' + + +--- + +* [HBASE-12990](https://issues.apache.org/jira/browse/HBASE-12990) | *Major* | **MetaScanner should be replaced by MetaTableAccessor** + +Removes MetaScanner. Use MetaTableAccessor instead. + + +--- + +* [HBASE-13373](https://issues.apache.org/jira/browse/HBASE-13373) | *Major* | **Squash HFileReaderV3 together with HFileReaderV2 and AbstractHFileReader; ditto for Scanners and BlockReader, etc.** + +Marking as incompatible change. Requires hfiles be major version \>= 2 and \>= minor version 3. Version 3 files are enabled by default in 1.0. 0.98 writes version 2 minor version 3. You cannot go to 1.0 from anything before 0.98. + + +--- + +* [HBASE-13252](https://issues.apache.org/jira/browse/HBASE-13252) | *Major* | **Get rid of managed connections and connection caching** + +For a long time, HBase supported 2 types of connections - managed, which were cached and closed automatically when not needed, and unmanaged, where user is responsible for closing the connections by calling #close() on them. + +The concept of managed connections in HBase (deprecated before) has now been extinguished completely, and now all callers are responsible for managing the lifecycle of connections they acquire. + + +--- + +* [HBASE-12954](https://issues.apache.org/jira/browse/HBASE-12954) | *Minor* | **Ability impaired using HBase on multihomed hosts** + +The following config is added by this JIRA: + +hbase.regionserver.hostname + +This config is for experts: don't set its value unless you really know what you are doing. +When set to a non-empty value, this represents the (external facing) hostname for the underlying server. +See https://issues.apache.org/jira/browse/HBASE-12954 for details. + +Caution: please make sure rolling upgrade succeeds before turning on this feature. + + +--- + +* [HBASE-13187](https://issues.apache.org/jira/browse/HBASE-13187) | *Critical* | **Add ITBLL that exercises per CF flush** + +Pass the -D flag generator.multiple.columnfamilies on the command-line if you want the generator to write three column families rather than the default one. When set, we will write the usual 'meta' column family and use it checking linked-list is wholesome but we will also write a 'tiny' column family and a 'big' column family to provoke uneven flushing; good for testing the flush-by-columnfamily feature. + + +--- + +* [HBASE-13361](https://issues.apache.org/jira/browse/HBASE-13361) | *Minor* | **Remove or undeprecate {get\|set}ScannerCaching in HTable** + +Removed getScannerCaching and setScannerCaching from Table + + +--- + +* [HBASE-10728](https://issues.apache.org/jira/browse/HBASE-10728) | *Major* | **get\_counter value is never used.** + +for 0.98 and 1.0 changes are compatible (due to mitigation by HBASE-13433): + +\* The "get\_counter" command no longer requires a dummy 4th argument. Downstream users are encouraged to migrate code to not pass this argument because it will result in an error for HBase 1.1+. +\* The "incr" command now outputs the current value of the counter to stdout. +ex: +{code} +jruby-1.6.8 :005 \> incr 'counter\_example', 'r1', 'cf1:foo', 10 +COUNTER VALUE = 1772 +0 row(s) in 0.1180 seconds +{code} + +for 1.1+ changes are incompatible: + +\* The "get\_counter" command no longer accepts a dummy 4th argument. Downstream users will need to update their code to not pass this argument. +ex: +{code} +jruby-1.6.8 :006 \> get\_counter 'counter\_example', 'r1', 'cf1:foo' +COUNTER VALUE = 1772 + +{code} +\* The "incr" command now outputs the current value of the counter to stdout. +ex: +{code} +jruby-1.6.8 :005 \> incr 'counter\_example', 'r1', 'cf1:foo', 10 +COUNTER VALUE = 1772 +0 row(s) in 0.1180 seconds +{code} + + +--- + +* [HBASE-13170](https://issues.apache.org/jira/browse/HBASE-13170) | *Major* | **Allow block cache to be external** + +HBase can use memcached as an external block cache. To use this change your config to set hbase.blockcache.use.external to true and hbase.cache.memcached.servers to contain the list of memcached servers to use. + + +--- + +* [HBASE-13316](https://issues.apache.org/jira/browse/HBASE-13316) | *Minor* | **Reduce the downtime on planned moves of regions** + +When issuing an Admin.move command the RegionServer that receive the region will try and open the StoreFiles of that region to prime the block cache with index blocks. + + +--- + +* [HBASE-13298](https://issues.apache.org/jira/browse/HBASE-13298) | *Critical* | **Clarify if Table.{set\|get}WriteBufferSize() is deprecated or not** + +Deprecate said methods. They were mistakenly included in Table Interface. + + +--- + +* [HBASE-13248](https://issues.apache.org/jira/browse/HBASE-13248) | *Major* | **Make HConnectionImplementation top-level class.** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-13331](https://issues.apache.org/jira/browse/HBASE-13331) | *Blocker* | **Exceptions from DFS client can cause CatalogJanitor to delete referenced files** + +Fixes an issue where files from a split region that were still referenced were erroneously deleted leading to data loss. + + +--- + +* [HBASE-13273](https://issues.apache.org/jira/browse/HBASE-13273) | *Major* | **Make Result.EMPTY\_RESULT read-only; currently it can be modified** + +The Result.EMPTY\_RESULT object is now immutable. In previous releases, the object could be modified by a caller to no longer be empty. Code that relies on this behavior will now receive an UnsupportedOperationException. + + +--- + +* [HBASE-12867](https://issues.apache.org/jira/browse/HBASE-12867) | *Major* | **Shell does not support custom replication endpoint specification** + +Adds support to add\_peer in hbase shell to add a custom replication endpoint from HBASE-12254. + + +--- + +* [HBASE-13198](https://issues.apache.org/jira/browse/HBASE-13198) | *Major* | **Remove HConnectionManager** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-12586](https://issues.apache.org/jira/browse/HBASE-12586) | *Major* | **Task 6 & 7 from HBASE-9117, delete all public HTable constructors and delete ConnectionManager#{delete,get}Connection** + +HTable class has been marked as private API before, and now it's no longer directly instantiable from client code (all public constructors have been removed). All clients should use Connection#getTable() and Connection#getRegionLocator() when appropriate to obtain Table and RegionLocator implementations to work with. + + +--- + +* [HBASE-13171](https://issues.apache.org/jira/browse/HBASE-13171) | *Minor* | **Change AccessControlClient methods to accept connection object to reduce setup time.** + +**WARNING: No release note provided for this change.** + + +--- + +* [HBASE-12706](https://issues.apache.org/jira/browse/HBASE-12706) | *Critical* | **Support multiple port numbers in ZK quorum string** + +hbase.zookeeper.quorum configuration now allows servers together with client ports consistent with the way Zookeeper java client accepts the quorum string. In this case, using hbase.zookeeper.clientPort is not needed. eg. hbase.zookeeper.quorum=myserver1:2181,myserver2:20000,myserver3:31111 + + +--- + +* [HBASE-13142](https://issues.apache.org/jira/browse/HBASE-13142) | *Major* | **[PERF] Reuse the IPCUtil#buildCellBlock buffer** + +Adds buffer reuse sending Cell results. It is on by default and should not need configuration. Improves GC profile and ups throughput. The benefit gets better the larger the row size returned. + +The buffer reservoir is bounded at a maximum count after which we will start logging at WARN level that the reservoir is running at capacity (returned buffers will be discarded and not added back to the reservoir pool). Default maximum is twice the handler count: i.e. 2 \* hbase.regionserver.handler.count. This should be more than enough. Set the maximum with the new configuration: hbase.ipc.server.reservoir.max + +The reservoir will not cache buffers in excess of hbase.ipc.server.reservoir.max.buffer.size The default is 10MB. This means that if a row is very large, then we will allocate a buffer of the average size that is currently in the pool and we will then resize it till we can accommodate the return. These resizes are expensive. The resultant buffer will be used and then discarded. + +To check how the reservoir is doing, enable trace level logging for a few seconds on a regionserver. You can do this from the regionserver UI. See 'Log Level'. Set org.apache.hadoop.hbase.io.BoundedByteBufferPool to TRACE. The BoundedByteBufferPool will spew report to the log. Disable the TRACE level and then check the log. You'll see allocation rate, size of pool, size of buffers in pool, etc. + + +--- + +* [HBASE-13012](https://issues.apache.org/jira/browse/HBASE-13012) | *Major* | **Add shell commands to trigger the mob file compactor** + +This adds two new shell commands -- compact\_mob and major\_compact\_mob to the hbase shell. + +Run compaction on a mob enabled column family or all mob enabled column families within a table + Examples: + Compact a column family within a table: + hbase\> compact\_mob 't1', 'c1' + Compact all mob enabled column families + hbase\> compact\_mob 't1' + +Run major compaction on a mob enabled column family or all mob enabled column families within a table + Examples: + Compact a column family within a table: + hbase\> major\_compact\_mob 't1', 'c1' + Compact all mob enabled column families within a table + hbase\> major\_compact\_mob 't1' + + +--- + +* [HBASE-12869](https://issues.apache.org/jira/browse/HBASE-12869) | *Major* | **Add a REST API implementation of the ClusterManager interface** + +Adds an implementation of ClusterManager to control REST API-managed HBase clusters. + + +--- + +* [HBASE-13047](https://issues.apache.org/jira/browse/HBASE-13047) | *Trivial* | **Add "HBase Configuration" link missing on the table details pages** + +Add a '/conf' link to UI + + +--- + +* [HBASE-13044](https://issues.apache.org/jira/browse/HBASE-13044) | *Minor* | **Configuration option for disabling coprocessor loading** + +This change adds two new configuration options: +- "hbase.coprocessor.enabled" controls globally if any coprocessors will be loaded. Set to "false" to disable. Defaults to "true" for compatibility with previous releases. +- "hbase.coprocessor.user.enabled" controls if any user (aka table) coprocessors will be loaded. Set to "false" to disable. Defaults to "true" for compatibility with previous releases. + + +--- + +* [HBASE-12961](https://issues.apache.org/jira/browse/HBASE-12961) | *Minor* | **Negative values in read and write region server metrics** + +Change read and write request count in ServerLoad from int to long + + +--- + +* [HBASE-7332](https://issues.apache.org/jira/browse/HBASE-7332) | *Minor* | **[webui] HMaster webui should display the number of regions a table has.** + +Adds counts for various regions states to the table listing on main page. See attached screenshot. + + +--- + +* [HBASE-8329](https://issues.apache.org/jira/browse/HBASE-8329) | *Major* | **Limit compaction speed** + +Adds compaction throughput limit mechanism(the word "throttle" is already used when choosing compaction thread pool, so use a different word here to avoid ambiguity). Default is org.apache.hadoop.hbase.regionserver.compactions.PressureAwareCompactionThroughputController, will limit throughput as follow: +1. In off peak hours, use a fixed limitation "hbase.hstore.compaction.throughput.offpeak" (default is Long.MAX\_VALUE which means no limitation). +2. In normal hours, the limitation is tuned between "hbase.hstore.compaction.throughput.lower.bound"(default 10MB/sec) and "hbase.hstore.compaction.throughput.higher.bound"(default 20MB/sec), using the formula "lower + (higer - lower) \* param" where param is in range [0.0, 1.0] and calculate based on store files count on this regionserver. +3. If some stores have too many store files(storefilesCount \> blockingFileCount), then there is no limitation no matter peak or off peak. +You can set "hbase.regionserver.throughput.controller" to org.apache.hadoop.hbase.regionserver.throttle.NoLimitThroughputController to disable throughput controlling. +And we have implemented ConfigurationObserver which means you can change all configurations above and do not need to restart cluster. + +The throttle is on by default in hbase-2.0.0. There is no limit in hbase-1.x. + + +--- + +* [HBASE-6778](https://issues.apache.org/jira/browse/HBASE-6778) | *Major* | **Deprecate Chore; its a thread per task when we should have one thread to do all tasks** + +Corresponding usages for new ScheduledChore vs. Deprecated Chore: +Chore.interrupt() -\> ScheduledChore.cancel(mayInterruptWhileRunning = true) +Threads.setDaemonThreadRunning(Chore) -\> ChoreService.scheduleChore(ScheduledChore) +Chore.isAlive -\> ScheduledChore.isScheduled() +Chore.getSleeper().skipSleepCycle() -\> ScheduledChore.triggerNow() + + +--- + +* [HBASE-11574](https://issues.apache.org/jira/browse/HBASE-11574) | *Major* | **hbase:meta's regions can be replicated** + +On the server side, set hbase.meta.replica.count to the number of replicas of meta that you want to have in the cluster (defaults to 1). hbase.regionserver. meta.storefile.refresh.period should be set to a non-zero number in milliseconds - something like 30000 (defaults to 0). +On the client/user side, set hbase.meta.replicas.use to true. + + +--- + +* [HBASE-12808](https://issues.apache.org/jira/browse/HBASE-12808) | *Major* | **Use Java API Compliance Checker for binary/source compatibility** + +Adds a dev-support/check\_compatibility.sh script for comparing versions. Run the script to see usage. + + +--- + +* [HBASE-12684](https://issues.apache.org/jira/browse/HBASE-12684) | *Major* | **Add new AsyncRpcClient** + +Retrofit a new, netty-based rpc transport on the client. This client is slightly slower if little contention given the extra tier or so that netty adds and that we block on a Future waiting on the call to finish. This client opens the way for HBase having a native Async API. + +This client is on by default in master branch (2.0 hbase). It is off in branch-1.0 (hbase-1.1.x). To enable it, set "hbase.rpc.client.impl" to "org.apache.hadoop.hbase.ipc.AsyncRpcClient" + + +--- + +* [HBASE-8410](https://issues.apache.org/jira/browse/HBASE-8410) | *Major* | **Basic quota support for namespaces** + +Namespace auditor provides basic quota support for namespaces in terms of number of tables and number of regions. In order to use namespace quotas, quota support must be enabled by setting +"hbase.quota.enabled" property to true in hbase-site.xml file. + +The users can add quota information to namespace, while creating new namespaces or by altering existing ones. + +Examples: +1. create\_namespace 'ns1', {'hbase.namespace.quota.maxregions'=\>'10'} +2. create\_namespace 'ns2', {'hbase.namespace.quota.maxtables'=\>'2','hbase.namespace.quota.maxregions'=\>'5'} +3. alter\_namespace 'ns3', {METHOD =\> 'set', 'hbase.namespace.quota.maxtables'=\>'5','hbase.namespace.quota.maxregions'=\>'25'} + +The quotas can be modified/added to namespace at any point of time. To remove quotas, the following command can be used: + +alter\_namespace 'ns3', {METHOD =\> 'unset', NAME =\> 'hbase.namespace.quota.maxtables'} +alter\_namespace 'ns3', {METHOD =\> 'unset', NAME =\> 'hbase.namespace.quota.maxregions'} + + +--- + +* [HBASE-12902](https://issues.apache.org/jira/browse/HBASE-12902) | *Major* | **Post-asciidoc conversion fix-ups** + +Pushed to master. Shout if there are any issues. + + +--- + +* [HBASE-12848](https://issues.apache.org/jira/browse/HBASE-12848) | *Major* | **Utilize Flash storage for WAL** + +For users on a version of Hadoop that supports tiered storage policies (i.e. Apache Hadoop 2.6.0+), HBase now allows users to opt-in to having the write ahead log placed on the SSD tier. Users on earlier versions of Hadoop will be unable to take advantage of this feature. + +Use of tiered storage is controlled by a new RegionServer config, hbase.wal.storage.policy. It defaults to the value 'NONE', which will rely on HDFS defaults for a policy decision. + +User can specify ONE\_SSD or ALL\_SSD as the value: +ONE\_SSD: place only one replica of WAL files in SSD and the remaining in default storage +ALL\_SSD: all replica for WAL files are placed on SSD + +See [the HDFS docs on storage policy\|http://hadoop.apache.org/docs/r2.6.0/hadoop-project-dist/hadoop-hdfs/ArchivalStorage.html] + + +--- + +* [HBASE-11144](https://issues.apache.org/jira/browse/HBASE-11144) | *Major* | **Filter to support scanning multiple row key ranges** + +MultiRowRangeFilter is a filter to support scanning multiple row key ranges. If the number of the ranges is small, using multiple scans can also do the same thing and can work well. But when the number of ranges are quite big (e.g. millions), use the MultiRowRangeFilter will be nice. In this filter, the ranges will be sorted and merged, so users do not have to take care of ranges are not continuous. And if users are using something like rest, thrift or pig to access the data the filter might be the practical solution. + + +--- + +* [HBASE-12268](https://issues.apache.org/jira/browse/HBASE-12268) | *Major* | **Add support for Scan.setRowPrefixFilter to shell** + +Added new option, ROWPREFIXFILTER, to the scan command in the HBase shell to easily scan for a specific row prefix. + + +--- + +* [HBASE-12775](https://issues.apache.org/jira/browse/HBASE-12775) | *Major* | **CompressionTest ate my HFile (sigh!)** + +CompressionTest will now abort when the target path exists. + + +--- + +* [HBASE-12695](https://issues.apache.org/jira/browse/HBASE-12695) | *Critical* | **JDK 1.8 compilation broken** + +Use the -Pjavac maven profile in order to compile HBase using the compiler provided by the JDK instead of the default error-prone compiler plugin. This is useful for now if you are building HBase with JDK 1.8 or a JDK that doesn't support error-prone. + + +--- + +* [HBASE-10201](https://issues.apache.org/jira/browse/HBASE-10201) | *Major* | **Port 'Make flush decisions per column family' to trunk** + +Adds new flushing policy mechanism. Default, org.apache.hadoop.hbase.regionserver.FlushLargeStoresPolicy, will try to avoid flushing out the small column families in a region, those whose memstores are \< hbase.hregion.percolumnfamilyflush.size.lower.bound. To restore the old behavior of flushes writing out all column families, set hbase.regionserver.flush.policy to org.apache.hadoop.hbase.regionserver.FlushAllStoresPolicy either in hbase-default.xml or on a per-table basis by setting the policy to use with HTableDescriptor.getFlushPolicyClassName(). + + +--- + +* [HBASE-12559](https://issues.apache.org/jira/browse/HBASE-12559) | *Major* | **Provide LoadBalancer with online configuration capability** + +updateConfiguration(ServerName server) method of Admin now updates config for HMaster as well. +Specifically, config update would be taken by load balancer. + + +--- + +* [HBASE-10378](https://issues.apache.org/jira/browse/HBASE-10378) | *Major* | **Divide HLog interface into User and Implementor specific interfaces** + +HBase internals for the write ahead log have been refactored. Advanced users of HBase should be aware of the following changes. + +Public Audience + - The Admin API for asking a region server to roll WAL files has changed from a synchronous command that returns a set of regions the WAL implementation would like flushed into an asynchronous command that returns nothing. Older clients relying on the former behavior will still be able to interact with newer servers, but the response body will always contain an empty list of regions to flush. + - The shell command "hlog\_roll" has been deprecated. Operators should use the "wal\_roll" command instead. This command is subject to the changes described above for the Admin API to roll WAL files. + - The command for analyzing write ahead logs has been renamed from 'hlog' to 'wal'. The old usage is deprecated and will be removed in a future version. + - Some utility methods in the HBaseTesetingUtility related to testing write-ahead-logs were changed in incompatible ways. No functionality has been removed, but method names and arguments have changed. See the HBaseTestingUtility javadoc for details. + - The WALPlayer utility has deprecated the configuration keys used for advanced customization. Users should switch to the updated configuration keys. See the usage information on the WALPlayer tool for details. + - The HLogInputFormat utility class for processing logs with MapReduce has been deprecated and will be removed in a future version. Users should switch to the WALInputFormat. + - The labeling of server metrics on the region server status pages changed. Previously, the number of backing files for the write ahead log was labeled 'Num. HLog Files'. If you wish to see this statistic now, please look for the label 'Num. WAL Files.' If you rely on JMX for these metrics, their location has not changed. + +LimitedPrivate(COPROC) Audience, LimitedPrivate(PHOENIX) + - The RegionObserver API has been updated. The changes are both binary and source backwards compatible for coprocessors that use the BaseRegionObserver class. For those that implement RegionObserver directly the changes are binary backwards compatible. Depending on the internals of future HBase versions, coprocessors using the deprecated API may not see all WAL related events. Users are strongly encouraged to update their use of the API; see the RegionObserver javadoc for details. + - Classes related to reading WAL entries (ReaderBase, ProtobufLogReader, SequenceFileLogReader) have changed in a backwards incompatible way. Users who referenced HLog.Reader directly or HLog.Entry will have to update. These changes do not impact compatibility with extant wal files. + - The WALObserver API has been updated. The changes are both binary and source backwards compatible for coprocessors that use the BaseWALObserver class. For those that implement WALObserver directly the changes are binary backwards compatible. Depending on the internals of future HBase versions, coprocessors using the deprecated API may not see all WAL related events. Users are strongly encouraged to update their use of the API; see the WALObserver javadoc for details. + - The WALCoprocessorEnvironment has changed in a backwards incompatible way. WALObserver coprocessors that relied on retrieving an object representing the write ahead log instance will have to be updated. + +LimitedPrivate(REPLICATION) Audience + - The WALEntryFilter API has changed in a backwards incompatible way. Implementers will have to be updated. + - The ReplicationEndpoint.ReplicateContext API has changed in a backwards incompatible way. Implementers who use this interface will have to be updated. These changes do not impact wire compatibility for replicating between clusters. + - The HLogKey API is deprecated in favor of the WALKey API. Additionally, the HLogKey API has changed in a backwards incompatible way by changing from implementing WriteableComparable\ to implementing Writeable and Comparable\. + + +--- + +* [HBASE-11683](https://issues.apache.org/jira/browse/HBASE-11683) | *Major* | **Metrics for MOB** + +Adds new mob related metrics: + +mobCompactedIntoMobCellsCount +mobCompactedIntoMobCellsSize +mobCompactedFromMobCellsCount +mobCompactedFromMobCellsSize +mobFlushCount +mobFlushedCellsCount +mobFlushedCellsSize +mobScanCellsCount +mobScanCellsSize +mobFileCacheAccessCount +mobFileCacheMissCount +mobFileCacheHitPercent +mobFileCacheEvictedCount +mobFileCacheCount + + +--- + +* [HBASE-11912](https://issues.apache.org/jira/browse/HBASE-11912) | *Major* | **Catch some bad practices at compile time with error-prone** + +Errors from error-prone will fail the build in the compile phase. Warnings look like Javac warnings and are counted as such by test-patch etc + + +--- + +* [HBASE-12220](https://issues.apache.org/jira/browse/HBASE-12220) | *Major* | **Add hedgedReads and hedgedReadWins metrics** + +Adds metrics hedgedReads and hedgedReadWins counts. + + +--- + +* [HBASE-6290](https://issues.apache.org/jira/browse/HBASE-6290) | *Minor* | **Add a function a mark a server as dead and start the recovery the process** + +Adds a script to mark a server as dead. + +Usage: considerAsDead.sh --hostname serverName + + +--- + +* [HBASE-12111](https://issues.apache.org/jira/browse/HBASE-12111) | *Major* | **Remove deprecated APIs from Mutation(s)** + +Removed the below from hbase-2 (were deprecated on release of hbase-1.0.0) + +Mutation setWriteToWAL(boolean) +boolean getWriteToWAL() +Mutation setFamilyMap(NavigableMap\\>) +NavigableMap\\> getFamilyMap() + + +--- + +* [HBASE-12084](https://issues.apache.org/jira/browse/HBASE-12084) | *Major* | **Remove deprecated APIs from Result** + +The below KeyValue based APIs are removed from Result +KeyValue[] raw() +List\ list() +List\ getColumn(byte [] family, byte [] qualifier) +KeyValue getColumnLatest(byte [] family, byte [] qualifier) +KeyValue getColumnLatest(byte [] family, int foffset, int flength, byte [] qualifier, int qoffset, int qlength) + +They are replaced with +Cell[] rawCells() +List\ listCells() +List\ getColumnCells(byte [] family, byte [] qualifier) +Cell getColumnLatestCell(byte [] family, byte [] qualifier) +Cell getColumnLatestCell(byte [] family, int foffset, int flength, byte [] qualifier, int qoffset, int qlength) +respectively + +Also the constructors which were taking KeyValues also removed +Result(KeyValue [] cells) +Result(List\ kvs) + + +--- + +* [HBASE-12048](https://issues.apache.org/jira/browse/HBASE-12048) | *Major* | **Remove deprecated APIs from Filter** + +The following APIs are removed from Filter +KeyValue transform(KeyValue) +KeyValue getNextKeyHint(KeyValue) +and replaced with +Cell transformCell(Cell) +Cell getNextCellHint(Cell) +respectively. +If a custom Filter implementation have overridden any of these methods, we will no longer call them. User has to change the custom Filter to override cell based methods as shown above + + +--- + +* [HBASE-7767](https://issues.apache.org/jira/browse/HBASE-7767) | *Major* | **Get rid of ZKTable, and table enable/disable state in ZK** + +Keeps table enabled/disabled state in HDFS rather than up in ZooKeeper. Auto-migrates any existing zk state. + + +--- + +* [HBASE-11911](https://issues.apache.org/jira/browse/HBASE-11911) | *Major* | **Break up tests into more fine grained categories** + +Adds new test categories besides the class smalltests, mediumtests, and largetests. Adds: + +ClientTests +CoprocessorTests +FilterTests +FlakeyTests +IOTests +MapReduceTests +MasterTests +MiscTests +RegionServerTests +ReplicationTests +RestTests +SecurityTests +VerySlowMapReduceTests +VerySlowRegionServerTests + +See description for examples on how to use them. + + +--- + +* [HBASE-11658](https://issues.apache.org/jira/browse/HBASE-11658) | *Major* | **Piped commands to hbase shell should return non-zero if shell command failed.** + +Adds a noninteractive mode (-n or --noninteractive) to the hbase shell that exits with a non-zero error code on failed or invalid shell command executions, and exits with a zero error code upon successful execution. + + +--- + +* [HBASE-11640](https://issues.apache.org/jira/browse/HBASE-11640) | *Major* | **Add syntax highlighting support to HBase Ref Guide programlistings** + +This got committed, so I guess it is safe to resolve it? + + +--- + +* [HBASE-11606](https://issues.apache.org/jira/browse/HBASE-11606) | *Minor* | **Enable ZK-less region assignment by default** + +By default, we don't use ZK for region assignment now. To fall back to the old way, you can set hbase.assignment.usezk to true. + + +--- + +* [HBASE-3135](https://issues.apache.org/jira/browse/HBASE-3135) | *Major* | **Make our MR jobs implement Tool and use ToolRunner so can do -D trickery, etc.** + +All MR jobs implement Tool Interface, http://hadoop.apache.org/docs/current/api/org/apache/hadoop/util/Tool.html, so now you can pass properties on command line with the -D flag, etc. + + +--- + +* [HBASE-11556](https://issues.apache.org/jira/browse/HBASE-11556) | *Major* | **Move HTablePool to hbase-thrift module.** + +HTablePool was deprecated in 0.98.1 but was still present and usable by apps built against versions before HBase 2.0. It has been moved and is not intended to be used by user applications, and is now an internal part of the thrift2 proxy server only. + + +--- + +* [HBASE-11548](https://issues.apache.org/jira/browse/HBASE-11548) | *Trivial* | **[PE] Add 'cycling' test N times and unit tests for size/zipf/valueSize calculations** + +Adds --cycles=N argument. + + +--- + +* [HBASE-11344](https://issues.apache.org/jira/browse/HBASE-11344) | *Major* | **Hide row keys and such from the web UIs** + +Configure "hbase.display.keys" to false (default: true) in the master/regionservers if the row-keys should be hidden in the webUIs (like in the webUI for table details). + + +--- + +* [HBASE-6580](https://issues.apache.org/jira/browse/HBASE-6580) | *Major* | **Deprecate HTablePool in favor of HConnection.getTable(...)** + +This issue introduces a few new APIs: +\* HConnectionManager: +{code} + public static HConnection createConnection(Configuration conf) + public static HConnection createConnection(Configuration conf, ExecutorService pool) +{code} +\* HConnection: +{code} + public HTableInterface getTable(String tableName) throws IOException + public HTableInterface getTable(byte[] tableName) throws IOException + public HTableInterface getTable(String tableName, ExecutorService pool) throws IOException + public HTableInterface getTable(byte[] tableName, ExecutorService pool) throws IOException +{code} + +By default HConnectionImplementation will create an ExecutorService when needed. The ExecutorService can optionally passed be passed in. +HTableInterfaces are retrieved from the HConnection. By default the HConnection's ExecutorService is used, but optionally that can be overridden for each HTable. + + +--- + +* [HBASE-8450](https://issues.apache.org/jira/browse/HBASE-8450) | *Critical* | **Update hbase-default.xml and general recommendations to better suit current hw, h2, experience, etc.** + +Changed defaults: + ++ max versions now 1 instead of 3 ++ row blooms on by default (except on .META. table) ++ handlers 30 instead of 10 ++ upped memstore lower limit from .35 to .38 ++ zookeeper timeout default is 90seconds instead of 180 ++ client pause is 100ms instead of 1000ms ++ retries are now 20 instead of 10 (so overall we still wait same amount of time) ++ bulkload retries is 10 instead of infinite ++ major compactions are now once a week instead of once every 24 hours; they are staggered so all regionservers do not start compacting at the same time ++ blockingstorefiles is 10 instead of 7 ++ block cache is 0.4 instead of 0.25 ++ Previous, default for hbase.rootdir was /tmp/hbase-${user.name}. Now it is ${java.io.tmpdir}/hbase-${user.name} which is usually the same location but may not be (on macos, it points to /var/tmp....). + + +--- + +* [HBASE-4072](https://issues.apache.org/jira/browse/HBASE-4072) | *Major* | **Deprecate/disable and remove support for reading ZooKeeper zoo.cfg files from the classpath** + +The Apache ZooKeeper config file zoo.cfg will no longer be read when instantiating a HBaseConfiguration object, as it causes various inconsistency issues. Instead, users have to specify all HBase-relevant ZooKeeper properties in the hbase-site.xml using the various "hbase.zookeeper" prefixed properties. For example, specify "hbase.zookeeper.quorum" to provide a ZK quorum server list. + +To enable zoo.cfg reading, for which support may be removed in a future release, set the property "hbase.config.read.zookeeper.config" to true in the hbase-site.xml at the client and servers like so: + +\ + \hbase.config.read.zookeeper.config\ + \true\ + \ + Set to true to allow HBaseConfiguration to read the + zoo.cfg file for ZooKeeper properties. Switching this to true + is not recommended, since the functionality of reading ZK + properties from a zoo.cfg file has been deprecated. + \ +\ + + +