29104da013
HBASE-13188 java.lang.ArithmeticException issue in BoundedByteBufferPool.putBuffer
2015-03-10 08:42:32 -07:00
0654d13403
HBASE-13185 Document hbase.regionserver.thrift.framed.max_frame_size_in_mb more clearly
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just added 'in MB'
Signed-off-by: stack <stack@apache.org>
2015-03-09 21:43:16 -07:00
9aa8f0672e
HBASE-13183 Make ZK tickTime configurable in standalone HBase (Alex Araujo)
2015-03-09 18:34:49 -07:00
9159c82fbf
HBASE-13142 [PERF] Reuse the IPCUtil#buildCellBlock buffer
2015-03-06 14:35:08 -08:00
74837d9b1f
Revert " HBASE-13142 [PERF] Reuse the IPCUtil#buildCellBlock buffer"
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OVERCOMMIT. REVERT.
This reverts commit 55f8f56ad2
2015-03-04 22:58:02 -08:00
55f8f56ad2
HBASE-13142 [PERF] Reuse the IPCUtil#buildCellBlock buffer
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Rename ByteBufferReservoir as BoundedByteBufferPool
2015-03-04 22:44:20 -08:00
de9791e91e
HBASE-11544: [Ergonomics] hbase.client.scanner.caching is dogged and will try to return batch even if it means OOME
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Signed-off-by: stack <stack@apache.org>
2015-03-04 17:34:48 -08:00
39425a8558
HBASE-11670 Generate PDF of Reference Guide
2015-03-05 09:31:11 +10:00
464e7ce685
HBASE-13109 Make better SEEK vs SKIP decisions during scanning.
2015-03-04 14:03:47 -08:00
9899aab12b
HBASE-11580 Failover handling for secondary region replicas
2015-03-03 11:48:12 -08:00
ce1b81cdfd
HBASE-13146 Race Condition in ScheduledChore and ChoreService
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Signed-off-by: stack <stack@apache.org>
2015-03-03 11:31:51 -08:00
31f17b17f0
HBASE-13002 Make encryption cipher configurable
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Signed-off-by: Andrew Purtell <apurtell@apache.org>
2015-02-18 11:42:20 -08:00
7b045d143a
HBASE-13050 Empty Namespace validation
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Signed-off-by: Matteo Bertozzi <matteo.bertozzi@cloudera.com>
2015-02-18 08:33:19 +01:00
9b2e4ed064
HBASE-13044 Configuration option for disabling coprocessor loading
2015-02-15 11:02:40 -08:00
3babad30e6
HBASE-13030 [1.0.0 polish] Make ScanMetrics public again and align Put 'add' with Get, Delete, etc., addColumn
2015-02-13 15:24:38 -08:00
3e10e6e1a6
HBASE-11569 Flush / Compaction handling from secondary region replicas
2015-02-13 11:08:24 -08:00
cfc131e437
HBASE-13038 Fix the java doc continuously reported by Hadoop QA
2015-02-13 09:30:29 -06:00
fc2e849cd3
HBASE-13008 Better default for hbase.regionserver.regionSplitLimit parameter (Srikanth Srungarapu)
2015-02-12 10:13:38 -08:00
02759f2d8c
HBASE-13026: Wrong error message in case incorrect snapshot name OR Incorrect table name
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Signed-off-by: Matteo Bertozzi <matteo.bertozzi@cloudera.com>
2015-02-12 15:25:35 +01:00
8aa4eeb1c8
HBASE-13007 Fix the test timeouts being caused by ChoreService (Jonathan Lawlor); ADDENDUM
2015-02-11 20:46:41 -08:00
a8d325eed8
HBASE-13007 Fix the test timeouts being caused by ChoreService (Jonathan Lawlor)
2015-02-10 21:19:14 -08:00
9c66afbae7
HBASE-12978 Region goes permanently offline (WAS: hbase:meta has a row missing hregioninfo and it causes my long-running job to fail)
2015-02-10 17:03:29 -08:00
fa852c4ce6
HBASE-12035 Keep table state in META (Andrey Stepachev)
2015-02-10 14:20:47 -08:00
ede20aa288
HBASE-13004 Addendum fixes timeout value in message (Andrey Stepachev)
2015-02-10 09:43:31 -08:00
a3f495f20d
HBASE-13004 Make possible to explain why HBaseTestingUtility.waitFor fails (Andrey Stepachev)
2015-02-10 07:33:52 -08:00
9d6b237ae8
HBASE-12992 TestChoreService doesn't close services, that can break test on slow virtual hosts (Andrey Stepachev)
2015-02-09 12:15:23 -08:00
ac175b1bd9
HBASE-12982 Adding timeouts to TestChoreService
2015-02-06 19:45:39 -08:00
1426f85b15
HBASE-12897 Minimum memstore size is a percentage (Churro Morales)
2015-02-06 16:15:29 -08:00
2583e8de57
HBASE-12976 Set default value for hbase.client.scanner.max.result.size.
2015-02-05 13:29:23 -08:00
c812d13a47
HBASE-12108 | Setting classloader so that HBase resources resolve even when HBaseConfiguration is loaded from a different class loader
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Signed-off-by: stack <stack@apache.org>
2015-02-03 08:25:07 -08:00
d3eedb24e1
HBASE-6778 Deprecate Chore; its a thread per task when we should have one thread to do all tasks - add new files
2015-01-29 21:11:33 -08:00
538388c2b5
HBASE-6778 Deprecate Chore; its a thread per task when we should have one thread to do all tasks (Jonathan Lawlor)
2015-01-29 19:26:26 -08:00
1270e590d1
HBASE-12859 New master API to track major compaction completion.
2015-01-29 13:58:27 -08:00
6b20a0f831
HBASE-11574. hbase:meta's regions can be replicated
2015-01-27 16:40:29 -08:00
854f13afa1
HBASE-12684 Add new AsyncRpcClient (Jurriaan Mous)
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Signed-off-by: stack <stack@apache.org>
2015-01-24 18:05:39 -08:00
38701ea8ec
HBASE-12899 HBase should prefix htrace configuration keys with "hbase.htrace" rather than just "hbase." (Colin Patrick McCabe)
2015-01-22 19:04:35 -08:00
71ab4ddb19
HBASE-12731 Heap occupancy based client pushback
2015-01-22 17:33:21 -08:00
9824eb7840
HBASE-12810 Update to htrace-incubating
2015-01-22 14:28:20 -08:00
418ea93774
HBASE-12898 ensure direct dependencies are declared.
2015-01-22 14:33:25 -06:00
4d31779dd7
HBASE-11533 AsciiDoctor POC Addendum 2 to fix redirects during site generation
2015-01-19 18:21:09 +10:00
eafc07a06d
HBASE-12848 Utilize Flash storage for WAL
2015-01-15 08:52:30 -08:00
71184309e1
HBASE-12845 - ByteBufferOutputStream should grow as direct buffer if the
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initial buffer is also direct BB (Ram)
2015-01-15 12:59:38 +05:30
1a21c1684c
HBASE-11533 Asciidoc Proof of Concept
2015-01-13 22:32:29 -08:00
20a096d62e
HBASE-12777 Redirect multi-page book to single-page book
2015-01-12 22:09:24 -08:00
acc284eec6
HBASE-12801 Failed to truncate a table while maintaing binary region boundaries (Liu Shaohui)
2015-01-12 19:09:02 -08:00
dde713ee4e
HBASE-12071 Separate out thread pool for Master <-> RegionServer communication (Stephen Yuan Jiang)
2015-01-08 14:17:00 -08:00
820f629423
HBASE-12028 Abort the RegionServer, when it's handler threads die (Alicia Ying Shu)
2015-01-02 13:07:57 -08:00
b2eea8cac6
HBASE-12695 JDK 1.8 compilation broken
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Signed-off-by: stack <stack@apache.org>
2014-12-29 11:02:04 -08:00
fbdaf62bf8
HBASE-12716 A bug in RegionSplitter.UniformSplit algorithm (Weichen Ye)
2014-12-28 07:48:24 -08:00
e92a9bf003
HBASE-12742
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Signed-off-by: stack <stack@apache.org>
2014-12-23 10:14:16 -08:00
d845a92fc8
HBASE-12682 compaction thread throttle value is not correct in hbase-default.xml (Jerry He)
2014-12-16 16:22:04 -08:00
c7fad665f3
HBASE-10201 Port 'Make flush decisions per column family' to trunk
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Signed-off-by: stack <stack@apache.org>
2014-12-16 11:49:17 -08:00
a411227b0e
HBASE-5162 Basic client pushback mechanism
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Instead of just blocking the client for 90 seconds when the region gets too
busy, it now sends along region load stats to the client so the client can
know how busy the server is. Currently, its just the load on the memstore, but
it can be extended for other stats (e.g. cpu, general memory, etc.).
It is then up to the client to decide if it wants to listen to these stats.
By default, the client ignores the stats, but it can easily be toggled to the
built-in exponential back-off or users can plug in their own back-off
implementations
2014-12-16 11:14:30 -08:00
e5d813c46b
HBASE-9431 Set 'hbase.bulkload.retries.number' to 10 as HBASE-8450 claims
2014-12-16 11:11:14 -08:00
afb753ecc3
HBASE-12683 Compilation with hadoop-2.7.0-SNAPSHOT is broken
2014-12-15 11:09:20 -08:00
743d16138e
HBASE-12679 Add HBaseInterfaceAudience.TOOLS and move some of the Public classes to LimitedPrivate
2014-12-14 17:46:30 -08:00
df22270756
HBASE-12665 When aborting, dump metrics
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Add some fixup of checkstyle fails
2014-12-09 21:01:15 -08:00
9e9be97af7
HBASE-12650 Move ServerName to hbase-common module - check in changed files
2014-12-08 07:08:44 -08:00
11864c60c7
HBASE-12650 Move ServerName to hbase-common module
2014-12-08 06:58:41 -08:00
ca0c1774c9
HBASE-12548. Improve debuggability of IntegrationTestTimeBoundedRequestsWithRegionReplicas
2014-12-06 18:18:03 -08:00
1ec6609b97
HBASE-12493 Make User and TokenUtil public
2014-12-05 13:04:54 -08:00
09cd3d7bfb
HBASE-10560 Per cell TTLs
2014-12-05 11:10:26 -08:00
155a644b1c
HBASE-12632 ThrottledInputStream/ExportSnapshot does not throttle
2014-12-05 06:52:04 -08:00
2c280e6253
HBASE-12600: Remove REPLAY tag dependency in Distributed Replay Mode
2014-12-01 11:19:47 -08:00
0733450473
Revert "Remove Replay Tag"
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This reverts commit f723ffde7f
2014-12-01 11:17:24 -08:00
f723ffde7f
Remove Replay Tag
2014-12-01 10:59:47 -08:00
56a03d736a
HBASE-12603 Remove javadoc warnings introduced due to removal of unused imports (Varun Saxena)
2014-12-01 10:13:16 -08:00
b6b88edf93
HBASE-11639 [Visibility controller] Replicate the visibility of Cells as
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strings (Ram)
2014-12-01 23:03:52 +05:30
555e78005d
HBASE-12526 Remove unused imports (Varun Saxena)
2014-11-29 09:20:46 -08:00
58b6b24c29
HBASE-12519 Remove tabs used as whitespace (Varun Saxena)
2014-11-28 20:50:02 -08:00
882324dbcc
HBASE-10671 Add missing InterfaceAudience annotations for classes in hbase-common and hbase-client modules
2014-11-21 11:44:46 -08:00
14dc08c07f
HBASE-12517 Ensure HConstants members are final.
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Signed-off-by: stack <stack@apache.org>
2014-11-18 13:04:25 -08:00
b94e6738d9
HBASE-10378 Refactor write-ahead-log implementation -- ADDEDNUM
2014-11-18 12:12:35 -08:00
a376c8da9d
HBASE-12366 Add login code to HBase Canary tool (Srikanth Srungarapu)
2014-11-12 20:34:55 +00:00
6e80af2044
HBASE-12460 Moving Chore to hbase-common module
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Signed-off-by: Matteo Bertozzi <matteo.bertozzi@cloudera.com>
2014-11-11 23:15:42 +00:00
9102547159
HBASE-12419 'Partial cell read caused by EOF' ERRORs on replication source
2014-11-05 18:47:05 -08:00
997c1adc2f
HBASE-12390 Change revision style from svn to git
2014-10-31 11:10:38 -07:00
889333a6fd
HBASE-12313 Redo the hfile index length optimization so cell-based rather than serialized KV key
2014-10-29 11:33:49 -07:00
cbb334035d
HBASE-12297 Support DBB usage in Bloom and HFileIndex area.
2014-10-29 14:39:03 +05:30
ece933fa3e
Implement Preemptive Fast Fail
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Summary: This diff ports the Preemptive Fast Fail feature to OSS. In multi threaded clients, we use a feature developed on 0.89-fb branch called Preemptive Fast Fail. This allows the client threads which would potentially fail, fail fast. The idea behind this feature is that we allow, among the hundreds of client threads, one thread to try and establish connection with the regionserver and if that succeeds, we mark it as a live node again. Meanwhile, other threads which are trying to establish connection to the same server would ideally go into the timeouts which is effectively unfruitful. We can in those cases return appropriate exceptions to those clients instead of letting them retry.
Test Plan: Unit tests
Differential Revision: https://reviews.facebook.net/D24177
Signed-off-by: stack <stack@apache.org>
2014-10-28 22:47:50 -07:00
70a312e53f
HBASE-11912 Catch some bad practices at compile time with error-prone
2014-10-27 09:29:23 -07:00
34f9962618
HBASE-12202 Support DirectByteBuffer usage in HFileBlock - addendum
2014-10-26 08:07:53 +05:30
0fb4c4d5f0
HBASE-11870 Optimization : Avoid copy of key and value for tags addition in AC and VC.
2014-10-25 21:12:15 +05:30
ff5bc351b2
Revert "HBASE-11912 Catch some bad practices at compile time with error-prone"
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This reverts commit 7ed0260eff
2014-10-25 08:33:43 -07:00
7ed0260eff
HBASE-11912 Catch some bad practices at compile time with error-prone
2014-10-24 18:15:12 -07:00
c623b04122
HBASE-12283 Clean up some checkstyle errors
2014-10-22 11:58:23 -07:00
d70e2b1244
HBASE-12288 Support DirectByteBuffer usage in DataBlock Encoding area.
2014-10-22 22:33:11 +05:30
c450298c44
HBASE-12307 Remove unused Imports in hbase-client and hbase-common
2014-10-21 21:53:04 -07:00
31ccaa519b
HBASE-12281 ClonedPrefixTreeCell should implement HeapSize (Ram)
2014-10-21 19:45:08 +05:30
c01d9981d8
HBASE-12202 Support DirectByteBuffer usage in HFileBlock.
2014-10-21 17:57:55 +05:30
7c87f9c6b5
HBASE-12241 The crash of regionServer when taking deadserver's replication queue breaks replication (Shaohui)
2014-10-16 21:38:18 +00:00
6dea02b260
HBASE-10200 Better error message when HttpServer fails to start due to java.net.BindException(Kiran Kumar M R)
2014-10-14 02:24:21 +00:00
3f2e599a99
HBASE-12210 Avoid KeyValue in Prefix Tree (Ram)
2014-10-10 22:45:26 +05:30
06a8bb5bd1
HBASE-12189 Fix new issues found by coverity static analysis
2014-10-09 20:51:04 -07:00
f75785af51
HBASE-12218 Make HBaseCommonTestingUtil#deleteDir try harder
2014-10-09 11:57:52 -07:00
a8be606145
HBASE-12016 Reduce number of versions in Meta table. Make it configurable (Andrey Stepachev)
2014-10-07 21:07:52 +00:00
3557a32352
HBASE-12106 Move test annotations to test artifact (Enis Soztutar)
2014-10-06 23:16:22 -07:00
2bc28ebb03
HBASE-12133 Add FastLongHistogram for metric computation; ADDENDUM TO FIX BROKE COMPILE
2014-10-02 11:53:53 -07:00
0e1e64b821
HBASE-12133 Add FastLongHistogram for metric computation (Yi Deng)
2014-10-02 10:38:56 -07:00
ff847978ad
HBASE-12156 TableName cache doesn't used for once of valueOf methods (Andrey Stepachev)
2014-10-02 09:45:57 -07:00
43301167db
HBASE-12145 Fix javadoc and findbugs so new folks aren't freaked when they see them
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Fix javadoc warnings.
Fixup findbugs warnings mostly by adding annotations saying 'working as expected'.
In RpcRetryingCallerWithReadReplicas made following change which findbugs spotted:
- if (completed == null) tasks.wait();
+ while (completed == null) tasks.wait();
In RecoverableZooKeeper, made all zk accesses synchronized -- we were doing it
half-ways previously.
In RatioBasedCompactionPolicy we were making an instance of Random on
each invocation of getNextMajorCompactionTime
2014-10-01 16:37:13 -07:00
4fac4c1ba6
HBASE-12112 Avoid KeyValueUtil#ensureKeyValue some more simple cases.
2014-10-01 14:05:57 +05:30
683f3b3d50
HBASE-12034 If I kill single RS in branch-1, all regions end up on Master!
2014-09-29 13:50:59 -07:00
df2ce0c389
HBASE-12082 Find a way to set timestamp on Cells on the server.
2014-09-29 11:22:12 +05:30
8895ee694c
HBASE-12079 Deprecate KeyValueUtil#ensureKeyValue(s).
2014-09-29 08:06:23 +05:30
dc5295df8c
HBASE-11957 addendum 2; fix TestAssignmentManager
2014-09-27 21:07:14 -07:00
5aeec324e7
HBASE-12090 Bytes: more Unsafe, more Faster. (Vladimir Rodionov)
2014-09-27 19:41:13 -07:00
31ed817447
HBASE-12069 Finish making HFile.Writer Cell-centric; undo APIs that expect KV serializations
2014-09-25 10:49:09 -07:00
a2e05b9f8f
HBASE-12050 Avoid KeyValueUtil#ensureKeyValue from DefaultMemStore.
2014-09-25 17:41:19 +05:30
9152d8677e
HBASE-12054 bad state after NamespaceUpgrade with reserved table names
2014-09-24 19:39:52 +01:00
46eada6e02
HBASE-12076 Move InterfaceAudience imports to hbase-annotations
2014-09-24 04:10:19 -07:00
0a28af366b
HBASE-12076 Move InterfaceAudience imports to hbase-annotations
2014-09-24 03:57:55 -07:00
a5bd931682
HBASE-12059 Create hbase-annotations module
2014-09-23 16:44:14 -07:00
a94f7b1400
HBASE-12024 Fix javadoc warning.
2014-09-23 22:50:55 +05:30
2635791027
HBASE-12062 Fix usage of Collections.toArray
2014-09-23 09:58:24 -07:00
791a03b40f
HBASE-12047 Avoid usage of KeyValueUtil#ensureKeyValue in simple cases.
2014-09-23 16:42:01 +05:30
bd8df9ccd4
HBASE-11598 Add simple rpc throttling
2014-09-18 22:38:30 +01:00
6813167423
HBASE-11874 Support Cell to be passed to StoreFile.Writer rather than KeyValue.
2014-09-18 18:32:45 +05:30
cf3dab7ee7
HBASE-11984 TestClassFinder failing on occasion FIX ATTEMPT
2014-09-16 11:31:53 -07:00
cc6fe16e59
HBASE-11984 TestClassFinder failing on occasion -- Add DEBUGGING
2014-09-15 21:36:00 -07:00
8a7326dd45
HBASE-11873 Hbase Version CLI enhancement (Ashish Singhi)
2014-09-15 21:07:56 -07:00
5554692871
HBASE-11862 Get rid of Writables in HTableDescriptor, HColumnDescriptor (Andrey Stepachev)
2014-09-15 11:08:21 -07:00
8c4baf6a8a
HBASE-11972 The doAs user used in the update to hbase:acl table RPC is incorrect (Devaraj Das)
2014-09-14 20:29:24 -07:00
4018e85611
HBASE-11892 Clean up stale config entries in hbase-default.xml
2014-09-15 11:27:48 +10:00
3c9bd7d296
HBASE-11911 Break up tests into more fine grained categories (Alex Newman)
2014-09-12 21:37:06 -07:00
d4850f1f17
HBASE-11934 Support KeyValueCodec to encode non KeyValue cells. (Anoop Sam John)
2014-09-10 22:18:51 -07:00
eec15bd172
HBASE-11331 [blockcache] lazy block decompression
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When hbase.block.data.cachecompressed=true, DATA (and ENCODED_DATA) blocks are
cached in the BlockCache in their on-disk format. This is different from the
default behavior, which decompresses and decrypts a block before caching.
2014-09-10 15:22:13 -07:00
f7bcf3df6b
HBASE-11921 Minor fixups that come of testing branch-1 (Stack)
2014-09-09 12:05:43 -07:00
0a9bfcaf74
HBASE-11805 KeyValue to Cell Convert in WALEdit APIs.
2014-09-07 15:48:21 +05:30
39609a556a
HBASE-11891 Introduce an HBaseInterfaceAudience level to denote class names that appear in configs.
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Signed-off-by: Andrew Purtell <apurtell@apache.org>
2014-09-05 14:33:39 -07:00
125f5619b9
HBASE-11777 Find a way to set sequenceId on Cells on the server.
2014-09-01 15:04:00 +05:30
3bfbd06291
HBASE-11822 Convert EnvironmentEdge#getCurrentTimeMillis to getCurrentTime
2014-08-29 17:14:25 -07:00
cdfc96f294
HBASE-11857 Restore ReaderBase.initAfterCompression() and WALCellCodec.create(Configuration, CompressionContext) (Ted Yu)
2014-08-29 16:53:22 -07:00
1abaacffb5
HBASE-11072 Abstract WAL splitting from ZK (Sergey Soldatov)
2014-08-29 16:46:32 -07:00
e5a5e968f1
HBASE-11810 Access SSL Passwords through Credential Provider API (Larry McCay)
2014-08-29 07:54:45 -07:00
452b1b7299
HBASE-11856 hbase-common needs a log4j.properties resource for handling unit test logging output
2014-08-28 15:01:56 -07:00
4445b30464
HBASE-11440 Make KeyValueCodecWithTags as the default codec for
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replication in trunk (Ram)
2014-08-27 10:03:55 +05:30
03687b80bc
HBASE-11813 CellScanner#advance may overflow stack
2014-08-25 14:52:36 -07:00
062f6a6aac
HBASE-11553 Abstract visibility label related services into an interface.
2014-08-20 14:47:29 +05:30
e28ec72464
HBASE-11568 Async WAL replication for region replicas
2014-08-19 18:59:22 -07:00
50f17935fd
HBASE-11735 Document Configurable Bucket Sizes in bucketCache (Misty Stanley-Jones)
2014-08-19 14:47:50 -07:00
25a7b75560
HBASE-11734 Document changed behavior of hbase.hstore.time.to.purge.deletes (Misty Stanley-Jones)
2014-08-18 13:42:03 -07:00
9936b86f70
HBASE-11748 Cleanup and add pool usage tracing to Compression
2014-08-14 16:53:26 -07:00
e1e70a7e2f
HBASE-11724 Add to RWQueueRpcExecutor the ability to split get and scan handlers
2014-08-14 20:52:11 +01:00
cabcb6ca23
HBASE-11717 Remove unused config 'hbase.offheapcache.percentage' from hbase-default.xml and book. (Anoop)
2014-08-14 23:47:03 +05:30
d7011a9dcc
HBASE-11527 Cluster free memory limit check should consider L2 block cache size also when L2 cache is onheap. (Anoop)
2014-08-08 23:45:29 +05:30
5e899c68e0
HBASE-11678 BucketCache ramCache fills heap after running a few hours
2014-08-07 14:23:22 -07:00
12d9697d93
HBASE-11527 Cluster free memory limit check should consider L2 block cache size also when L2 cache is onheap. (Anoop)
2014-08-07 17:16:16 +05:30
757b13dea4
HBASE-11318 Classes in security subpackages missing @InterfaceAudience annotations (Jonathan Hsieh and Andrew Purtell)
2014-08-04 11:13:58 -07:00
4fd3b110f3
HBASE-11384 - [Visibility Controller]Check for users covering
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authorizations for every mutation (Ram)
2014-08-01 13:18:09 -07:00
stack
Daisuke
Andrew Purtell
Jonathan Lawlor
Misty Stanley-Jones
Lars Hofhansl
Enis Soztutar
zhangduo
Ashish Singhi
Abhishek Kumar
Bhupendra
tedyu
Aniket Bhatnagar
Devaraj Das
Jurriaan Mous
Nick Dimiduk
Sean Busbey
Ramkrishna
Esteban Gutierrez
Jesse Yates
Gary Helmling
Jeffrey Zhong
Sean Busbey
Matteo Bertozzi
Srikanth Srungarapu
anoopsjohn
manukranthk
Elliott Clark
anoopsjohn
Ted Yu
Rajeshbabu Chintaguntla
Jimmy Xiang
Jonathan M Hsieh