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hbase/CHANGES.txt

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HBase Change Log
Release 0.21.0 - Unreleased
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)
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)
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(List<Put) code duplication (Kay Kay via Stack)
HBASE-2185 Add html version of default hbase-site.xml (Kay Kay via Stack)
HBASE-2198 SingleColumnValueFilter should be able to find the column value
even when it's not specifically added as input on the sc
(Ferdy via Stack)
HBASE-2189 HCM trashes meta cache even when not needed
HBASE-2190 HRS should report to master when HMsg are available
HBASE-2209 Support of List [ ] in HBaseOutputWritable for serialization
(Kay Kay via Stack)
HBASE-2177 Add timestamping to gc logging option
HBASE-2066 Perf: parallelize puts
NEW FEATURES
HBASE-1961 HBase EC2 scripts
HBASE-1982 [EC2] Handle potentially large and uneven instance startup times
HBASE-2009 [EC2] Support mapreduce
HBASE-2012 [EC2] LZO support
HBASE-2019 [EC2] remember credentials if not configured
HBASE-2080 [EC2] Support multivolume local instance storage
HBASE-2083 [EC2] HDFS DataNode no longer required on master
HBASE-2084 [EC2] JAVA_HOME handling broken
HBASE-2100 [EC2] Adjust fs.file-max
HBASE-2103 [EC2] pull version from build
HBASE-2131 [EC2] Mount data volumes as xfs, noatime
HBASE-1901 "General" partitioner for "hbase-48" bulk (behind the api, write
hfiles direct) uploader
HBASE-1433 Update hbase build to match core, use ivy, publish jars to maven
repo, etc. (Kay Kay via Stack)
HBASE-2129 Simple Master/Slave replication
OPTIMIZATIONS
HBASE-410 [testing] Speed up the test suite
HBASE-2041 Change WAL default configuration values
Release 0.20.0 - Tue Sep 8 12:53:05 PDT 2009
INCOMPATIBLE CHANGES
HBASE-1147 Modify the scripts to use Zookeeper
HBASE-1144 Store the ROOT region location in Zookeeper
(Nitay Joffe via Stack)
HBASE-1146 Replace the HRS leases with Zookeeper
HBASE-61 Create an HBase-specific MapFile implementation
(Ryan Rawson via Stack)
HBASE-1145 Ensure that there is only 1 Master with Zookeeper (Removes
hbase.master) (Nitay Joffe via Stack)
HBASE-1289 Remove "hbase.fully.distributed" option and update docs
(Nitay Joffe via Stack)
HBASE-1234 Change HBase StoreKey format
HBASE-1348 Move 0.20.0 targeted TRUNK to 0.20.0 hadoop
(Ryan Rawson and Stack)
HBASE-1342 Add to filesystem info needed to rebuild .META.
HBASE-1361 Disable bloom filters
HBASE-1367 Get rid of Thrift exception 'NotFound'
HBASE-1381 Remove onelab and bloom filters files from hbase
HBASE-1411 Remove HLogEdit.
HBASE-1357 If one sets the hbase.master to 0.0.0.0 non local regionservers
can't find the master
HBASE-1304 New client server implementation of how gets and puts are
handled (holstad, jgray, rawson, stack)
HBASE-1582 Translate ColumnValueFilter and RowFilterSet to the new
Filter interface (Clint Morgan and Stack)
HBASE-1599 Fix TestFilterSet, broken up on hudson (Jon Gray via Stack)
HBASE-1799 deprecate o.a.h.h.rest in favor of stargate
BUG FIXES
HBASE-1140 "ant clean test" fails (Nitay Joffe via Stack)
HBASE-1129 Master won't go down; stuck joined on rootScanner
HBASE-1136 HashFunction inadvertently destroys some randomness
(Jonathan Ellis via Stack)
HBASE-1138 Test that readers opened after a sync can see all data up to the
sync (temporary until HADOOP-4379 is resolved)
HBASE-1121 Cluster confused about where -ROOT- is
HBASE-1148 Always flush HLog on root or meta region updates
HBASE-1181 src/saveVersion.sh bails on non-standard Bourne shells
(e.g. dash) (K M via Jean-Daniel Cryans)
HBASE-1175 HBA administrative tools do not work when specifying region
name (Jonathan Gray via Andrew Purtell)
HBASE-1190 TableInputFormatBase with row filters scan too far (Dave
Latham via Andrew Purtell)
HBASE-1198 OOME in IPC server does not trigger abort behavior
HBASE-1209 Make port displayed the same as is used in URL for RegionServer
table in UI (Lars George via Stack)
HBASE-1217 add new compression and hfile blocksize to HColumnDescriptor
HBASE-859 HStoreKey needs a reworking
HBASE-1211 NPE in retries exhausted exception
HBASE-1233 Transactional fixes: Overly conservative scan read-set,
potential CME (Clint Morgan via Stack)
HBASE-1239 in the REST interface does not correctly clear the character
buffer each iteration-1185 wrong request/sec in the gui
reporting wrong (Brian Beggs via Stack)
HBASE-1245 hfile meta block handling bugs (Ryan Rawson via Stack)
HBASE-1238 Under upload, region servers are unable
to compact when loaded with hundreds of regions
HBASE-1247 checkAndSave doesn't Write Ahead Log
HBASE-1243 oldlogfile.dat is screwed, so is it's region
HBASE-1169 When a shutdown is requested, stop scanning META regions
immediately
HBASE-1251 HConnectionManager.getConnection(HBaseConfiguration) returns
same HConnection for different HBaseConfigurations
HBASE-1157, HBASE-1156 If we do not take start code as a part of region
server recovery, we could inadvertantly try to reassign regions
assigned to a restarted server with a different start code;
Improve lease handling
HBASE-1267 binary keys broken in trunk (again) -- part 2 and 3
(Ryan Rawson via Stack)
HBASE-1268 ZooKeeper config parsing can break HBase startup
(Nitay Joffe via Stack)
HBASE-1270 Fix TestInfoServers (Nitay Joffe via Stack)
HBASE-1277 HStoreKey: Wrong comparator logic (Evgeny Ryabitskiy)
HBASE-1275 TestTable.testCreateTable broken (Ryan Rawson via Stack)
HBASE-1274 TestMergeTable is broken in Hudson (Nitay Joffe via Stack)
HBASE-1283 thrift's package descrpition needs to update for start/stop
procedure (Rong-en Fan via Stack)
HBASE-1284 drop table drops all disabled tables
HBASE-1290 table.jsp either 500s out or doesnt list the regions (Ryan
Rawson via Andrew Purtell)
HBASE-1293 hfile doesn't recycle decompressors (Ryan Rawson via Andrew
Purtell)
HBASE-1150 HMsg carries safemode flag; remove (Nitay Joffe via Stack)
HBASE-1232 zookeeper client wont reconnect if there is a problem (Nitay
Joffe via Andrew Purtell)
HBASE-1303 Secondary index configuration prevents HBase from starting
(Ken Weiner via Stack)
HBASE-1298 master.jsp & table.jsp do not URI Encode table or region
names in links (Lars George via Stack)
HBASE-1310 Off by one error in Bytes.vintToBytes
HBASE-1202 getRow does not always work when specifying number of versions
HBASE-1324 hbase-1234 broke testget2 unit test (and broke the build)
HBASE-1321 hbase-1234 broke TestCompaction; fix and reenable
HBASE-1330 binary keys broken on trunk (Ryan Rawson via Stack)
HBASE-1332 regionserver carrying .META. starts sucking all cpu, drives load
up - infinite loop? (Ryan Rawson via Stack)
HBASE-1334 .META. region running into hfile errors (Ryan Rawson via Stack)
HBASE-1338 lost use of compaction.dir; we were compacting into live store
subdirectory
HBASE-1058 Prevent runaway compactions
HBASE-1292 php thrift's getRow() would throw an exception if the row does
not exist (Rong-en Fan via Stack)
HBASE-1340 Fix new javadoc warnings (Evgeny Ryabitskiy via Stack)
HBASE-1287 Partitioner class not used in TableMapReduceUtil
.initTableReduceJob() (Lars George and Billy Pearson via Stack)
HBASE-1320 hbase-1234 broke filter tests
HBASE-1355 [performance] Cache family maxversions; we were calculating on
each access
HBASE-1358 Bug in reading from Memcache method (read only from snapshot)
(Evgeny Ryabitskiy via Stack)
HBASE-1322 hbase-1234 broke TestAtomicIncrement; fix and reenable
(Evgeny Ryabitskiy and Ryan Rawson via Stack)
HBASE-1347 HTable.incrementColumnValue does not take negative 'amount'
(Evgeny Ryabitskiy via Stack)
HBASE-1365 Typo in TableInputFormatBase.setInputColums (Jon Gray via Stack)
HBASE-1279 Fix the way hostnames and IPs are handled
HBASE-1368 HBASE-1279 broke the build
HBASE-1264 Wrong return values of comparators for ColumnValueFilter
(Thomas Schneider via Andrew Purtell)
HBASE-1374 NPE out of ZooKeeperWrapper.loadZooKeeperConfig
HBASE-1336 Splitting up the compare of family+column into 2 different
compare
HBASE-1377 RS address is null in master web UI
HBASE-1344 WARN IllegalStateException: Cannot set a region as open if it
has not been pending
HBASE-1386 NPE in housekeeping
HBASE-1396 Remove unused sequencefile and mapfile config. from
hbase-default.xml
HBASE-1398 TableOperation doesnt format keys for meta scan properly
(Ryan Rawson via Stack)
HBASE-1399 Can't drop tables since HBASE-1398 (Ryan Rawson via Andrew
Purtell)
HBASE-1311 ZooKeeperWrapper: Failed to set watcher on ZNode /hbase/master
(Nitay Joffe via Stack)
HBASE-1391 NPE in TableInputFormatBase$TableRecordReader.restart if zoo.cfg
is wrong or missing on task trackers
HBASE-1323 hbase-1234 broke TestThriftServer; fix and reenable
HBASE-1425 ColumnValueFilter and WhileMatchFilter fixes on trunk
(Clint Morgan via Stack)
HBASE-1431 NPE in HTable.checkAndSave when row doesn't exist (Guilherme
Mauro Germoglio Barbosa via Andrew Purtell)
HBASE-1421 Processing a regionserver message -- OPEN, CLOSE, SPLIT, etc. --
and if we're carrying more than one message in payload, if
exception, all messages that follow are dropped on floor
HBASE-1434 Duplicate property in hbase-default.xml (Lars George via Andrew
Purtell)
HBASE-1435 HRegionServer is using wrong info bind address from
hbase-site.xml (Lars George via Stack)
HBASE-1438 HBASE-1421 broke the build (#602 up on hudson)
HBASE-1440 master won't go down because joined on a rootscanner that is
waiting for ever
HBASE-1441 NPE in ProcessRegionStatusChange#getMetaRegion
HBASE-1162 CME in Master in RegionManager.applyActions
HBASE-1010 IOE on regionserver shutdown because hadn't opened an HLog
HBASE-1415 Stuck on memcache flush
HBASE-1257 base64 encoded values are not contained in quotes during the
HBase REST JSON serialization (Brian Beggs via Stack)
HBASE-1436 Killing regionserver can make corrupted hfile
HBASE-1272 Unreadable log messages -- "... to the only server
localhost_1237525439599_56094" <- You'd have to be perverse
to recognize that as a hostname, startcode, and port
HBASE-1395 InfoServers no longer put up a UI
HBASE-1302 When a new master comes up, regionservers should continue with
their region assignments from the last master
HBASE-1457 Taking down ROOT/META regionserver can result in cluster
becoming in-operational (Ryan Rawson via Stack)
HBASE-1471 During cluster shutdown, deleting zookeeper regionserver nodes
causes exceptions
HBASE-1483 HLog split loses track of edits (Clint Morgan via Stack)
HBASE-1484 commit log split writes files with newest edits first
(since hbase-1430); should be other way round
HBASE-1493 New TableMapReduceUtil methods should be static (Billy Pearson
via Andrew Purtell)
HBASE-1486 BLOCKCACHE always on even when disabled (Lars George via Stack)
HBASE-1491 ZooKeeper errors: "Client has seen zxid 0xe our last zxid
is 0xd"
HBASE-1499 Fix javadoc warnings after HBASE-1304 commit (Lars George via
Stack)
HBASE-1504 Remove left-over debug from 1304 commit
HBASE-1518 Delete Trackers using compareRow, should just use raw
binary comparator (Jon Gray via Stack)
HBASE-1500 KeyValue$KeyComparator array overrun
HBASE-1513 Compactions too slow
HBASE-1516 Investigate if StoreScanner will not return the next row if
earlied-out of previous row (Jon Gray)
HBASE-1520 StoreFileScanner catches and ignore IOExceptions from HFile
HBASE-1522 We delete splits before their time occasionally
HBASE-1523 NPE in BaseScanner
HBASE-1525 HTable.incrementColumnValue hangs()
HBASE-1526 mapreduce fixup
HBASE-1503 hbase-1304 dropped updating list of store files on flush
(jgray via stack)
HBASE-1480 compaction file not cleaned up after a crash/OOME server
(Evgeny Ryabitskiy via Stack)
HBASE-1529 familyMap not invalidated when a Result is (re)read as a
Writable
HBASE-1528 Ensure scanners work across memcache snapshot
HBASE-1447 Take last version of the hbase-1249 design doc. and make
documentation out of it
HBASE-1206 Scanner spins when there are concurrent inserts to column family
HBASE-1536 Controlled crash of regionserver not hosting meta/root leaves
master in spinning state, regions not reassigned
HBASE-1543 Unnecessary toString during scanning costs us some CPU
HBASE-1544 Cleanup HTable (Jonathan Gray via Stack)
HBASE-1488 After 1304 goes in, fix and reenable test of thrift, mr indexer,
and merge tool
HBASE-1531 Change new Get to use new filter API
HBASE-1549 in zookeeper.sh, use localhost instead of 127.0.0.1
HBASE-1534 Got ZooKeeper event, state: Disconnected on HRS and then NPE on
reinit
HBASE-1387 Before release verify all object sizes using Ryans' instrumented
JVM trick (Erik Holstad via Stack)
HBASE-1545 atomicIncrements creating new values with Long.MAX_VALUE
HBASE-1547 atomicIncrement doesnt increase hregion.memcacheSize
HBASE-1553 ClassSize missing in trunk
HBASE-1561 HTable Mismatch between javadoc and what it actually does
HBASE-1558 deletes use 'HConstants.LATEST_TIMESTAMP' but no one translates
that into 'now'
HBASE-1508 Shell "close_region" reveals a Master<>HRS 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
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
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
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