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CHANGES.txt
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HBase Change Log
Release Notes - HBase - Version 1.5.0 4/5/2019
** Sub-task
* [HBASE-16848] - Usage for show_peer_tableCFs command doesn't include peer
* [HBASE-19468] - FNFE during scans and flushes
* [HBASE-19631] - Allow building HBase 1.5.x against Hadoop 3.0.0
* [HBASE-19932] - TestSecureIPC in branch-1 fails with NoSuchMethodError against hadoop 3
* [HBASE-20048] - Revert serial replication feature
* [HBASE-20716] - Unsafe access cleanup
* [HBASE-21374] - Backport HBASE-21342 to branch-1
* [HBASE-21561] - Backport HBASE-21413 (Empty meta log doesn't get split when restart whole cluster) to branch-1
* [HBASE-21616] - Port HBASE-21034 (Add new throttle type: read/write capacity unit) to branch-1
* [HBASE-21632] - Backport to branch-1 HBASE-21620 Problem in scan query when using more than one column prefix filter in some cases.
* [HBASE-21675] - Port HBASE-21642 (CopyTable by reading snapshot and bulkloading will save a lot of time) to branch-1
* [HBASE-21679] - Port HBASE-6028 (Start/Stop compactions at region server level) to branch-1
* [HBASE-21680] - Port HBASE-20194 (Basic Replication WebUI - Master) and HBASE-20193 (Basic Replication Web UI - Regionserver) to branch-1
* [HBASE-21711] - Remove references to git.apache.org/hbase.git
* [HBASE-21727] - Simplify documentation around client timeout
* [HBASE-21734] - Some optimization in FilterListWithOR
* [HBASE-21735] - Port HBASE-18784 (Use of filesystem that requires hflush / hsync / append / etc should query outputstream capabilities) to branch-1
* [HBASE-21748] - Port HBASE-21738 (Remove all the CLSM#size operation in our memstore because it's an quite time consuming.) to branch-1
* [HBASE-21838] - Create a special ReplicationEndpoint just for verifying the WAL entries are fine
** Bug
* [HBASE-14223] - Meta WALs are not cleared if meta region was closed and RS aborts
* [HBASE-16499] - slow replication for small HBase clusters
* [HBASE-18116] - Replication source in-memory accounting should not include bulk transfer hfiles
* [HBASE-18312] - Ineffective handling of FileNotFoundException in FileLink$FileLinkInputStream.tryOpen()
* [HBASE-18517] - limit max log message width in log4j
* [HBASE-19240] - Fix error-prone errors, part four?
* [HBASE-19850] - The number of Offline Regions is wrong after restoring a snapshot
* [HBASE-20006] - TestRestoreSnapshotFromClientWithRegionReplicas is flakey
* [HBASE-20691] - Storage policy should allow deferring to HDFS
* [HBASE-20744] - Address FindBugs warnings in branch-1
* [HBASE-20764] - build broken when latest commit is gpg signed
* [HBASE-20870] - Wrong HBase root dir in ITBLL's Search Tool
* [HBASE-20928] - Rewrite calculation of midpoint in binarySearch functions to prevent overflow
* [HBASE-21021] - Result returned by Append operation should be ordered
* [HBASE-21132] - return wrong result in rest multiget
* [HBASE-21135] - Build fails on windows as it fails to parse windows path during license check
* [HBASE-21196] - HTableMultiplexer clears the meta cache after every put operation
* [HBASE-21208] - Bytes#toShort doesn't work without unsafe
* [HBASE-21475] - Put mutation (having TTL set) added via co-processor is retrieved even after TTL expires
* [HBASE-21492] - CellCodec Written To WAL Before It's Verified
* [HBASE-21547] - Precommit uses master flaky list for other branches
* [HBASE-21553] - schedLock not released in MasterProcedureScheduler
* [HBASE-21575] - memstore above high watermark message is logged too much
* [HBASE-21582] - If call HBaseAdmin#snapshotAsync but forget call isSnapshotFinished, then SnapshotHFileCleaner will skip to run every time
* [HBASE-21592] - quota.addGetResult(r) throw NPE
* [HBASE-21618] - Scan with the same startRow(inclusive=true) and stopRow(inclusive=false) returns one result
* [HBASE-21740] - Fix NPE while shutting down RS
* [HBASE-21749] - RS UI may throw NPE and make rs-status page inaccessible with multiwal and replication
* [HBASE-21766] - TestSimpleRpcScheduler is flaky (branch-1)
* [HBASE-21781] - list_deadservers elapsed time is incorrect
* [HBASE-21796] - Recover a ZK client from the AUTH_FAILED state
* [HBASE-21800] - RegionServer aborted due to NPE from MetaTableMetrics coprocessor
* [HBASE-21866] - Do not move the table to null rsgroup when creating an existing table
* [HBASE-21915] - Make FileLinkInputStream implement CanUnbuffer
* [HBASE-21959] - CompactionTool should close the store it uses for compacting files, in order to properly archive compacted files.
* [HBASE-21990] - puppycrawl checkstyle dtds 404... moved to sourceforge
* [HBASE-21991] - Fix MetaMetrics issues - [Race condition, Faulty remove logic], few improvements
* [HBASE-22045] - Mutable range histogram reports incorrect outliers
* [HBASE-22067] - Fix log in StochasticLoadBalancer when balancer
* [HBASE-22125] - Fix more instances in make_rc.sh where we need -Dhttps.protocols=TLSv1.2
** New Feature
* [HBASE-19528] - Major Compaction Tool
* [HBASE-21926] - Profiler servlet
** Improvement
* [HBASE-17314] - Limit total buffered size for all replication sources
* [HBASE-19024] - Configurable default durability for synchronous WAL
* [HBASE-19036] - Add action in Chaos Monkey to restart Active Namenode
* [HBASE-19290] - Reduce zk request when doing split log
* [HBASE-19673] - Backport " Periodically ensure records are not buffered too long by BufferedMutator" to branch-1
* [HBASE-20047] - AuthenticationTokenIdentifier should provide a toString
* [HBASE-20087] - Periodically attempt redeploy of regions in FAILED_OPEN state
* [HBASE-20109] - Add Admin#getMaster API to branch-1
* [HBASE-20209] - Do Not Use Both Map containsKey and get Methods in Replication Sink
* [HBASE-20286] - Improving shell command compaction_state
* [HBASE-20406] - HBase Thrift HTTP - Shouldn't handle TRACE/OPTIONS methods
* [HBASE-20444] - Improve version comparison logic for HBase specific version string and add unit tests
* [HBASE-20446] - Allow building HBase 1.x against Hadoop 3.1.x
* [HBASE-20450] - Provide metrics for number of total active, priority and replication rpc handlers
* [HBASE-20672] - New metrics ReadRequestRate and WriteRequestRate
* [HBASE-20845] - Support set the consistency for Gets and Scans in thrift2
* [HBASE-20858] - port HBASE-20695 to branch-1
* [HBASE-21000] - Default limits for PressureAwareCompactionThroughputController are too low
* [HBASE-21126] - Add ability for HBase Canary to ignore a configurable number of ZooKeeper down nodes
* [HBASE-21164] - reportForDuty to spew less log if master is initializing
* [HBASE-21256] - Improve IntegrationTestBigLinkedList for testing huge data
* [HBASE-21283] - Add new shell command 'rit' for listing regions in transition
* [HBASE-21318] - Make RefreshHFilesClient runnable
* [HBASE-21325] - Force to terminate regionserver when abort hang in somewhere
* [HBASE-21328] - add HBASE_DISABLE_HADOOP_CLASSPATH_LOOKUP switch to hbase-env.sh
* [HBASE-21520] - TestMultiColumnScanner cost long time when using ROWCOL bloom type
* [HBASE-21567] - Allow overriding configs starting up the shell
* [HBASE-21590] - Optimize trySkipToNextColumn in StoreScanner a bit
* [HBASE-21595] - Print thread's information and stack traces when RS is aborting forcibly
* [HBASE-21645] - Perform sanity check and disallow table creation/modification with region replication < 1
* [HBASE-21659] - Avoid to load duplicate coprocessors in system config and table descriptor
* [HBASE-21810] - bulkload support set hfile compression on client
* [HBASE-21932] - Use Runtime.getRuntime().halt to terminate regionserver when abort timeout
* [HBASE-21952] - Fix unit test: TestClientOperationInterrupt#testInterrupt50Percent
* [HBASE-21969] - Improve the update of destination rsgroup of RSGroupInfoManagerImpl#moveTables()
* [HBASE-21987] - Simplify RSGroupInfoManagerImpl#flushConfig() for offline mode
* [HBASE-22009] - Improve RSGroupInfoManagerImpl#getDefaultServers()
* [HBASE-22034] - Backport HBASE-21401 and HBASE-22032 to branch-1
* [HBASE-22051] - Expect values are hard-coded in the verifications of TestRSGroupsBasics
** Test
* [HBASE-20667] - Rename TestGlobalThrottler to TestReplicationGlobalThrottler
* [HBASE-21272] - Re-add assertions for RS Group admin tests
* [HBASE-21963] - Add a script for building and verifying release candidate
** Task
* [HBASE-19858] - Backport HBASE-14061 (Support CF-level Storage Policy) to branch-1
* [HBASE-20486] - Change default throughput controller to PressureAwareThroughputController in branch-1
* [HBASE-20493] - Port HBASE-19994 (Create a new class for RPC throttling exception, make it retryable) to branch-1
* [HBASE-20501] - Change the Hadoop minimum version to 2.7.1
* [HBASE-21685] - Change repository urls to Gitbox
* [HBASE-21687] - Update Findbugs Maven Plugin to 3.0.4 to work with Maven 3.6.0+ [branches-1]
* [HBASE-21791] - Upgrade thrift dependency to 0.12.0
* [HBASE-21826] - Rebase 1.5.0 CHANGES on branch-1.4 at release 1.4.9
* [HBASE-21853] - update copyright notices for contributions in 2019
* [HBASE-21884] - Fix box/unbox findbugs warning in secure bulk load
* [HBASE-22044] - Restore compat for ByteBufferUtils. Also deprecated because it will be IA.Private in HBase 3.0
Release Notes - HBase - Version 1.4.9 12/7/2018
** Sub-task
* [HBASE-21347] - Backport HBASE-21200 "Memstore flush doesn't finish because of seekToPreviousRow() in memstore scanner." to branch-1
* [HBASE-21473] - RowIndexSeekerV1 may return cell with extra two \x00\x00 bytes which has no tags
** Bug
* [HBASE-20604] - ProtobufLogReader#readNext can incorrectly loop to the same position in the stream until the the WAL is rolled
* [HBASE-21266] - Not running balancer because processing dead regionservers, but empty dead rs list
* [HBASE-21275] - Thrift Server (branch 1 fix) -> Disable TRACE HTTP method for thrift http server (branch 1 only)
* [HBASE-21355] - HStore's storeSize is calculated repeatedly which causing the confusing region split
* [HBASE-21357] - RS should abort if OOM in Reader thread
* [HBASE-21359] - Fix build problem against Hadoop 2.8.5
* [HBASE-21387] - Race condition surrounding in progress snapshot handling in snapshot cache leads to loss of snapshot files
* [HBASE-21417] - Pre commit build is broken due to surefire plugin crashes
* [HBASE-21424] - Change flakies and nightlies so scheduled less often
* [HBASE-21439] - StochasticLoadBalancer RegionLoads aren’t being used in RegionLoad cost functions
* [HBASE-21445] - CopyTable by bulkload will write hfile into yarn's HDFS
* [HBASE-21464] - Splitting blocked with meta NSRE during split transaction
* [HBASE-21504] - If enable FIFOCompactionPolicy, a compaction may write a "empty" hfile whose maxTimeStamp is long max. This kind of hfile will never be archived.
* [HBASE-21546] - ConnectException in TestThriftHttpServer
** Improvement
* [HBASE-21103] - nightly test cache of yetus install needs to be more thorough in verification
* [HBASE-21185] - WALPrettyPrinter: Additional useful info to be printed by wal printer tool, for debugability purposes
* [HBASE-21263] - Mention compression algorithm along with other storefile details
* [HBASE-21373] - Backport to branch-1, "HBASE-21338 [balancer] If balancer is an ill-fit for cluster size, it gives little indication"
* [HBASE-21511] - Remove in progress snapshot check in SnapshotFileCache#getUnreferencedFiles
** Task
* [HBASE-21265] - Split up TestRSGroups
Release Notes - HBase - Version 1.4.8 10/8/2018
** Sub-task
* [HBASE-19275] - TestSnapshotFileCache never worked properly
* [HBASE-20317] - Backport HBASE-20261 "Table page (table.jsp) in Master UI does not show replicaIds for hbase meta table" to branch-1
* [HBASE-21061] - fix synchronization of org.apache.hadoop.hbase.ipc.RpcServer$Connection.useWrap
* [HBASE-21189] - flaky job should gather machine stats
* [HBASE-21190] - Log files and count of entries in each as we load from the MasterProcWAL store
** Bug
* [HBASE-18451] - PeriodicMemstoreFlusher should inspect the queue before adding a delayed flush request
* [HBASE-18549] - Unclaimed replication queues can go undetected
* [HBASE-19418] - RANGE_OF_DELAY in PeriodicMemstoreFlusher should be configurable.
* [HBASE-20307] - LoadTestTool prints too much zookeeper logging
* [HBASE-20704] - Sometimes some compacted storefiles are not archived on region close
* [HBASE-20766] - Verify Replication Tool Has Typo "remove cluster"
* [HBASE-21030] - Correct javadoc for append operation
* [HBASE-21088] - HStoreFile should be closed in HStore#hasReferences
* [HBASE-21117] - Backport HBASE-18350 (fix RSGroups) to branch-1 (Only port the part fixing table locking issue.)
* [HBASE-21127] - TableRecordReader need to handle cursor result too
* [HBASE-21158] - Empty qualifier cell is always returned when using QualifierFilter
* [HBASE-21162] - Revert suspicious change to BoundedByteBufferPool and disable use of direct buffers for IPC reservoir by default
* [HBASE-21166] - Creating a CoprocessorHConnection re-retrieves the cluster id from ZK
* [HBASE-21173] - Remove the duplicate HRegion#close in TestHRegion
* [HBASE-21174] - [REST] Failed to parse empty qualifier in TableResource#getScanResource
* [HBASE-21179] - Fix the number of actions in responseTooSlow log
* [HBASE-21203] - TestZKMainServer#testCommandLineWorks won't pass with default 4lw whitelist
* [HBASE-21206] - Scan with batch size may return incomplete cells
* [HBASE-21212] - Wrong flush time when update flush metric
* [HBASE-21228] - Memory leak since AbstractFSWAL caches Thread object and never clean later
** Improvement
* [HBASE-20734] - Colocate recovered edits directory with hbase.wal.dir
* [HBASE-20857] - JMX - add Balancer status = enabled / disabled
* [HBASE-21147] - (1.4) Add ability for HBase Canary to ignore a configurable number of ZooKeeper down nodes
* [HBASE-21207] - Add client side sorting functionality in master web UI for table and region server details.
** Test
* [HBASE-21138] - Close HRegion instance at the end of every test in TestHRegion
* [HBASE-21258] - Add resetting of flags for RS Group pre/post hooks in TestRSGroups
* [HBASE-21261] - Add log4j.properties for hbase-rsgroup tests
** Task
* [HBASE-21168] - BloomFilterUtil uses hardcoded randomness
Release Notes - HBase - Version 1.4.7 9/3/2018
** Sub-task
* [HBASE-20896] - Port HBASE-20866 to branch-1 and branch-1.4
* [HBASE-20974] - Backport HBASE-20583 (SplitLogWorker should handle FileNotFoundException when split a wal) to branch-1
** Bug
* [HBASE-20890] - PE filterScan seems to be stuck forever
* [HBASE-20895] - NPE in RpcServer#readAndProcess
* [HBASE-20940] - HStore.cansplit should not allow split to happen if it has references
* [HBASE-20997] - rebuildUserRegions() does not build ReplicaMapping during master switchover
* [HBASE-21007] - Memory leak in HBase rest server
* [HBASE-21042] - processor.getRowsToLock() always assumes there is some row being locked in HRegion#processRowsWithLocks
* [HBASE-21047] - Object creation of StoreFileScanner thru constructor and close may leave refCount to -1
* [HBASE-21058] - Nightly tests for branches 1 fail to build ref guide
* [HBASE-21069] - NPE in StoreScanner.updateReaders causes RS to crash
* [HBASE-21074] - JDK7 branches need to pass "-Dhttps.protocols=TLSv1.2" to maven when building
** Improvement
* [HBASE-20387] - flaky infrastructure should work for all branches
* [HBASE-20469] - Directory used for sidelining old recovered edits files should be made configurable
* [HBASE-20930] - MetaScanner.metaScan should use passed variable for meta table name rather than TableName.META_TABLE_NAME
* [HBASE-20935] - HStore.removeCompactedFiles should log in case it is unable to delete a file
** Test
* [HBASE-21076] - TestTableResource fails with NPE
** Task
* [HBASE-20942] - Improve RpcServer TRACE logging
Release Notes - HBase - Version 1.4.6 7/30/2018
** Sub-task
* [HBASE-19722] - Meta query statistics metrics source
* [HBASE-20556] - Backport HBASE-16490 to branch-1
* [HBASE-20557] - Backport HBASE-17215 to branch-1
* [HBASE-20558] - Backport HBASE-17854 to branch-1
* [HBASE-20559] - Backport HBASE-18083 to branch-1
** Bug
* [HBASE-17885] - Backport HBASE-15871 to branch-1
* [HBASE-19377] - Compatibility checker complaining about hash collisions
* [HBASE-20230] - Incorrrect log message in RSRpcService
* [HBASE-20565] - ColumnRangeFilter combined with ColumnPaginationFilter can produce incorrect result since 1.4
* [HBASE-20689] - Docker fails to install rubocop for precommit
* [HBASE-20697] - Can't cache All region locations of the specify table by calling table.getRegionLocator().getAllRegionLocations()
* [HBASE-20723] - Custom hbase.wal.dir results in data loss because we write recovered edits into a different place than where the recovering region server looks for them
* [HBASE-20732] - Shutdown scan pool when master is stopped.
* [HBASE-20769] - getSplits() has a out of bounds problem in TableSnapshotInputFormatImpl
* [HBASE-20770] - WAL cleaner logs way too much; gets clogged when lots of work to do
* [HBASE-20771] - PUT operation fail with "No server address listed in hbase:meta for region xxxxx"
* [HBASE-20785] - NPE getting metrics in PE testing scans
* [HBASE-20789] - TestBucketCache#testCacheBlockNextBlockMetadataMissing is flaky
* [HBASE-20808] - Wrong shutdown order between Chores and ChoreService
* [HBASE-20840] - Backport HBASE-20791 'RSGroupBasedLoadBalancer#setClusterMetrics should pass ClusterMetrics to its internalBalancer' to branch-1
* [HBASE-20855] - PeerConfigTracker only supporting one listener will cause problem when there is a recovered replication queue
* [HBASE-20889] - PE scan is failing with NullPointerException
* [HBASE-20908] - Infinite loop on regionserver if region replica are reduced
* [HBASE-20917] - MetaTableMetrics#stop references uninitialized requestsMap for non-meta region
** Improvement
* [HBASE-20401] - Make `MAX_WAIT` and `waitIfNotFinished` in CleanerContext configurable
* [HBASE-20651] - Master, prevents hbck or shell command to reassign the split parent region
* [HBASE-20701] - too much logging when balancer runs from BaseLoadBalancer
* [HBASE-20733] - QABot should run checkstyle tests if the checkstyle configs change
* [HBASE-20806] - Split style journal for flushes and compactions
* [HBASE-20826] - Truncate responseInfo attributes on RpcServer WARN messages
** Task
* [HBASE-20884] - Replace usage of our Base64 implementation with java.util.Base64
* [HBASE-20905] - branch-1 docker build fails
* [HBASE-20931] - [branch-1] Add -Dhttps.protocols=TLSv1.2 to Maven command line in make_rc.sh
** Umbrella
* [HBASE-20555] - Backport HBASE-18083 and related changes in branch-1
Release Notes - HBase - Version 1.4.5 6/20/2018
** Sub-task
* [HBASE-20316] - Backport HBASE-20229 "ConnectionImplementation.locateRegions() returns duplicated entries when region replication is on" to branch-1
* [HBASE-20647] - Backport HBASE-20616 "TruncateTableProcedure is stuck in retry loop in TRUNCATE_TABLE_CREATE_FS_LAYOUT state" to branch-1
** Bug
* [HBASE-18842] - The hbase shell clone_snaphost command returns bad error message
* [HBASE-19924] - hbase rpc throttling does not work for multi() with request count rater.
* [HBASE-20004] - Client is not able to execute REST queries in a secure cluster
* [HBASE-20204] - Add locking to RefreshFileConnections in BucketCache
* [HBASE-20447] - Only fail cacheBlock if block collisions aren't related to next block metadata
* [HBASE-20500] - [rsgroup] should keep at least one server in default group
* [HBASE-20517] - Fix PerformanceEvaluation 'column' parameter
* [HBASE-20554] - "WALs outstanding" message from CleanerChore is noisy
* [HBASE-20571] - JMXJsonServlet generates invalid JSON if it has NaN in metrics
* [HBASE-20590] - REST Java client is not able to negotiate with the server in the secure mode
* [HBASE-20591] - nightly job doesn't respect maven options
* [HBASE-20597] - Use a lock to serialize access to a shared reference to ZooKeeperWatcher in HBaseReplicationEndpoint
* [HBASE-20627] - Relocate RS Group pre/post hooks from RSGroupAdminServer to RSGroupAdminEndpoint
* [HBASE-20638] - nightly source artifact testing should fail the stage if it's going to report an error on jira
* [HBASE-20664] - Variable shared across multiple threads
* [HBASE-20669] - [findbugs] autoboxing to parse primitive
* [HBASE-20670] - NPE in HMaster#isInMaintenanceMode
** Improvement
* [HBASE-20523] - PE tool should support configuring client side buffering sizes
* [HBASE-20545] - Improve performance of BaseLoadBalancer.retainAssignment
* [HBASE-20548] - Master fails to startup on large clusters, refreshing block distribution
* [HBASE-20605] - Exclude new Azure Storage FileSystem from SecureBulkLoadEndpoint permission check
** Test
* [HBASE-20505] - PE should support multi column family read and write cases
* [HBASE-20513] - Collect and emit ScanMetrics in PerformanceEvaluation
* [HBASE-20619] - TestWeakObjectPool occasionally times out
* [HBASE-20646] - TestWALProcedureStoreOnHDFS failing on branch-1
** Task
* [HBASE-19475] - Extend backporting strategy in documentation
* [HBASE-20595] - Remove the concept of 'special tables' from rsgroups
* [HBASE-20608] - Remove build option of error prone profile for branch-1 after HBASE-12350
Release Notes - HBase - Version 1.4.4 4/30/2018
** Sub-task
* [HBASE-20276] - [shell] Revert shell REPL change and document
** Bug
* [HBASE-15291] - FileSystem not closed in secure bulkLoad
* [HBASE-17631] - Canary interval too low
* [HBASE-19343] - Restore snapshot makes split parent region online
* [HBASE-20068] - Hadoopcheck project health check uses default maven repo instead of yetus managed ones
* [HBASE-20231] - Not able to delete column family from a row using RemoteHTable
* [HBASE-20280] - Fix possibility of deadlocking in refreshFileConnections when prefetch is enabled
* [HBASE-20292] - Wrong URLs in the descriptions for update_all_config and update_config commands in shell
* [HBASE-20293] - get_splits returns duplicate split points when region replication is on
* [HBASE-20301] - Remove the meaningless plus sign from table.jsp
* [HBASE-20302] - CatalogJanitor should log the reason why it is disabled
* [HBASE-20322] - CME in StoreScanner causes region server crash
* [HBASE-20335] - nightly jobs no longer contain machine information
* [HBASE-20364] - nightly job gives old results or no results for stages that timeout on SCM
* [HBASE-20404] - Ugly cleanerchore complaint that dir is not empty
* [HBASE-20463] - Fix breakage introduced on branch-1 by HBASE-20276 "[shell] Revert shell REPL change and document"
** Improvement
* [HBASE-15466] - precommit should not run all java goals when given a docs-only patch
* [HBASE-20352] - [Chore] Backport HBASE-18309 to branch-1
* [HBASE-20379] - shadedjars yetus plugin should add a footer link
* [HBASE-20459] - Majority of scan CPU time in HBase-1 spent in size estimation
** Task
* [HBASE-20112] - Include test results from nightly hadoop3 tests in jenkins test results
Release Notes - HBase - Version 1.4.3 3/30/2018
** Sub-task
* [HBASE-18731] - [compat 1-2] Mark protected methods of QuotaSettings that touch Protobuf internals as IA.Private
** Bug
* [HBASE-14897] - TestTableLockManager.testReapAllTableLocks is flakey
* [HBASE-18864] - NullPointerException thrown when adding rows to a table from peer cluster, table with replication factor other than 0 or 1
* [HBASE-18985] - Fix the building warning of missing version in hbase-shaded-check-invariants module
* [HBASE-19364] - Truncate_preserve fails with table when replica region > 1
* [HBASE-19391] - Calling HRegion#initializeRegionInternals from a region replica can still re-create a region directory
* [HBASE-19553] - Old replica regions should be cleared from AM memory after primary region split or merge
* [HBASE-19769] - IllegalAccessError on package-private Hadoop metrics2 classes in MapReduce jobs
* [HBASE-19802] - Wrong usage messages on shell commands (grant/revoke namespace syntax)
* [HBASE-19863] - java.lang.IllegalStateException: isDelete failed when SingleColumnValueFilter is used
* [HBASE-19985] - Redundant instanceof check in ProtobufUtil#getServiceException
* [HBASE-19989] - READY_TO_MERGE and READY_TO_SPLIT do not update region state correctly
* [HBASE-20001] - cleanIfNoMetaEntry() uses encoded instead of region name to lookup region
* [HBASE-20016] - TestCatalogJanitorInMemoryStates#testInMemoryForReplicaParentCleanup is flaky
* [HBASE-20025] - TestZKPermissionWatcher is flakey in branch-1
* [HBASE-20061] - HStore synchronized member variable filesCompacting should be private
* [HBASE-20062] - findbugs is not running on precommit checks
* [HBASE-20091] - Fix for 'build.plugins.plugin.version' for org.codehaus.mojo: is missing.
* [HBASE-20102] - AssignmentManager#shutdown doesn't shut down scheduled executor
* [HBASE-20106] - API Compliance checker should fall back to specifying origin as remote repo
* [HBASE-20134] - support scripts use hard-coded /tmp
* [HBASE-20139] - NPE in RSRpcServices.get() when getRegion throws an exception
* [HBASE-20141] - Fix TooManyFiles exception when RefreshingChannels in FileIOEngine
* [HBASE-20146] - Regions are stuck while opening when WAL is disabled
* [HBASE-20153] - enable error-prone analysis in precommit
* [HBASE-20162] - [nightly] depending on pipeline execution we sometimes refer to the wrong workspace
* [HBASE-20164] - failed hadoopcheck should add footer link
* [HBASE-20174] - Fix TestZKLessMergeOnCluster flakiness
* [HBASE-20189] - Typo in Required Java Version error message while building HBase.
** Improvement
* [HBASE-18467] - nightly job needs to run all stages and then comment on jira
* [HBASE-20186] - Improve RSGroupBasedLoadBalancer#balanceCluster() to be more efficient when calculating cluster state for each rsgroup
** Test
* [HBASE-20052] - TestRegionOpen#testNonExistentRegionReplica fails due to NPE
** Task
* [HBASE-15151] - Rely on nightly tests for findbugs compliance on existing branch
* [HBASE-20075] - remove logic for branch-1.1 nightly testing
* [HBASE-20088] - Update copyright notices to year 2018
* [HBASE-20089] - make_rc.sh should name SHA-512 checksum files with the extension .sha512
Release Notes - HBase - Version 1.4.2 2/28/2018
** Sub-task
* [HBASE-19877] - hbase-common and hbase-zookeeper don't add the log4j.properties to the resource path for testing
* [HBASE-20008] - [backport] NullPointerException when restoring a snapshot after splitting a region
** Bug
* [HBASE-18282] - ReplicationLogCleaner can delete WALs not yet replicated in case of a KeeperException
* [HBASE-19728] - Add lock to filesCompacting in all place.
* [HBASE-19871] - delete.rb should require user to provide the column
* [HBASE-19876] - The exception happening in converting pb mutation to hbase.mutation messes up the CellScanner
* [HBASE-19892] - Checking 'patch attach' and yetus 0.7.0 and move to Yetus 0.7.0
* [HBASE-19900] - Region-level exception destroy the result of batch
* [HBASE-19901] - Up yetus proclimit on nightlies
* [HBASE-19905] - ReplicationSyncUp tool will not exit if a peer replication is disabled
* [HBASE-19934] - HBaseSnapshotException when read replicas is enabled and online snapshot is taken after region splitting
* [HBASE-19937] - Ensure createRSGroupTable be called after ProcedureExecutor and LoadBalancer are initialized
* [HBASE-19972] - Should rethrow the RetriesExhaustedWithDetailsException when failed to apply the batch in ReplicationSink
* [HBASE-19979] - ReplicationSyncUp tool may leak Zookeeper connection
* [HBASE-19981] - Boolean#getBoolean is used to parse value
* [HBASE-19996] - Some nonce procs might not be cleaned up (follow up HBASE-19756)
* [HBASE-20017] - BufferedMutatorImpl submit the same mutation repeatedly
* [HBASE-20027] - Add test TestClusterPortAssignment
** New Feature
* [HBASE-19886] - Display maintenance mode in shell, web UI
** Improvement
* [HBASE-19770] - Add '--return-values' option to Shell to print return values of commands in interactive mode
* [HBASE-19917] - Improve RSGroupBasedLoadBalancer#filterServers() to be more efficient
** Test
* [HBASE-19949] - TestRSGroupsWithACL fails with ExceptionInInitializerError
Release Notes - HBase - Version 1.4.1 2/2/2018
** Sub-task
* [HBASE-19378] - Backport HBASE-19252 "Move the transform logic of FilterList into transformCell() method to avoid extra ref to question cell"
* [HBASE-19468] - FNFE during scans and flushes
* [HBASE-19481] - Enable Checkstyle in hbase-error-prone
* [HBASE-19502] - Make sure we have closed all StoreFileScanners if we fail to open any StoreFileScanners
** Bug
* [HBASE-11409] - Add more flexibility for input directory structure to LoadIncrementalHFiles
* [HBASE-17079] - HBase build fails on windows, hbase-archetype-builder is reason for failure
* [HBASE-17513] - Thrift Server 1 uses different QOP settings than RPC and Thrift Server 2 and can easily be misconfigured so there is no encryption when the operator expects it.
* [HBASE-18625] - Splitting of region with replica, doesn't update region list in serverHolding. A server crash leads to overlap.
* [HBASE-19125] - TestReplicator is flaky
* [HBASE-19163] - "Maximum lock count exceeded" from region server's batch processing
* [HBASE-19383] - [1.2] java.lang.AssertionError: expected:<2> but was:<1> at org.apache.hadoop.hbase.TestChoreService.testTriggerNowFailsWhenNotScheduled(TestChoreService.java:707)
* [HBASE-19424] - Metrics servlet throws NPE
* [HBASE-19483] - Add proper privilege check for rsgroup commands
* [HBASE-19490] - Rare failure in TestRateLimiter
* [HBASE-19509] - RSGroupAdminEndpoint#preCreateTable triggers TableNotFoundException
* [HBASE-19546] - TestMasterReplication.testCyclicReplication2 uses wrong assertion
* [HBASE-19551] - hbck -boundaries doesn't work correctly
* [HBASE-19588] - Additional jar dependencies needed for mapreduce PerformanceEvaluation
* [HBASE-19685] - Fix TestFSErrorsExposed#testFullSystemBubblesFSErrors
* [HBASE-19691] - Do not require ADMIN permission for obtaining ClusterStatus
* [HBASE-19708] - Avoid NPE when the RPC listener's accept channel is closed
* [HBASE-19752] - RSGroupBasedLoadBalancer#getMisplacedRegions() should handle the case where rs group cannot be determined
* [HBASE-19756] - Master NPE during completed failed proc eviction
* [HBASE-19757] - System table gets stuck after enabling region server group feature in secure cluster
* [HBASE-19816] - Replication sink list is not updated on UnknownHostException
** New Feature
* [HBASE-15321] - Ability to open a HRegion from hdfs snapshot.
** Improvement
* [HBASE-15580] - Tag coprocessor limitedprivate scope to StoreFile.Reader
* [HBASE-19358] - Improve the stability of splitting log when do fail over
* [HBASE-19489] - Check against only the latest maintenance release in pre-commit hadoopcheck.
* [HBASE-19491] - Exclude flaky tests from nightly master run
* [HBASE-19545] - Replace getBytes(StandardCharsets.UTF_8) with Bytes.toBytes
* [HBASE-19570] - Add hadoop3 tests to Nightly master/branch-2 runs
* [HBASE-19571] - Minor refactor of Nightly run scripts
* [HBASE-19684] - BlockCacheKey toString Performance
* [HBASE-19789] - Not exclude flaky tests from nightly builds
** Test
* [HBASE-19514] - Use random port for TestJMXListener
** Task
* [HBASE-19485] - Minor improvement to TestCompactedHFilesDischarger
* [HBASE-19637] - Add .checkstyle to gitignore
Release Notes - HBase - Version 1.4.0 12/18/2017
** Sub-task
* [HBASE-12148] - Remove TimeRangeTracker as point of contention when many threads writing a Store
* [HBASE-15160] - Put back HFile's HDFS op latency sampling code and add metrics for monitoring
* [HBASE-15342] - create branch-1.3 and update branch-1 poms to 1.4.0-SNAPSHOT
* [HBASE-15386] - PREFETCH_BLOCKS_ON_OPEN in HColumnDescriptor is ignored
* [HBASE-15484] - Correct the semantic of batch and partial
* [HBASE-15662] - Hook up JvmPauseMonitor to REST server
* [HBASE-15663] - Hook up JvmPauseMonitor to ThriftServer
* [HBASE-15675] - Add more details about region on table.jsp
* [HBASE-15691] - Port HBASE-10205 (ConcurrentModificationException in BucketAllocator) to branch-1
* [HBASE-15927] - Remove HMaster.assignRegion()
* [HBASE-15994] - Allow selection of RpcSchedulers
* [HBASE-15995] - Separate replication WAL reading from shipping
* [HBASE-16092] - Procedure v2 - complete child procedure support
* [HBASE-16236] - Typo in javadoc of InstancePending
* [HBASE-16242] - Upgrade Avro to 1.7.7
* [HBASE-16280] - Use hash based map in SequenceIdAccounting
* [HBASE-16311] - Audit log for delete snapshot operation is missing in case of snapshot owner deleting the same
* [HBASE-16336] - Removing peers seems to be leaving spare queues
* [HBASE-16398] - optimize HRegion computeHDFSBlocksDistribution
* [HBASE-16451] - Procedure v2 - Test WAL protobuf entry size limit
* [HBASE-16505] - Save deadline in RpcCallContext according to request's timeout
* [HBASE-16530] - Reduce DBE code duplication
* [HBASE-16533] - Procedure v2 - Extract chore from the executor
* [HBASE-16570] - Compute region locality in parallel at startup
* [HBASE-17167] - Pass mvcc to client when scan
* [HBASE-17210] - Set timeout on trying rowlock according to client's RPC timeout
* [HBASE-17508] - Unify the implementation of small scan and regular scan for sync client
* [HBASE-17561] - table status page should escape values that may contain arbitrary characters.
* [HBASE-17583] - Add inclusive/exclusive support for startRow and endRow of scan for sync client
* [HBASE-17584] - Expose ScanMetrics with ResultScanner rather than Scan
* [HBASE-17595] - Add partial result support for small/limited scan
* [HBASE-17599] - Use mayHaveMoreCellsInRow instead of isPartial
* [HBASE-17793] - Backport ScanResultCache related code to branch-1
* [HBASE-17887] - Row-level consistency is broken for read
* [HBASE-17925] - mvn assembly:single fails against hadoop3-alpha2
* [HBASE-18268] - Eliminate the findbugs warnings for hbase-client
* [HBASE-18293] - Only add the spotbugs dependency when jdk8 is active
* [HBASE-18295] - The result contains the cells across different rows
* [HBASE-18308] - Eliminate the findbugs warnings for hbase-server
* [HBASE-18315] - Eliminate the findbugs warnings for hbase-rest
* [HBASE-18365] - Eliminate the findbugs warnings for hbase-common
* [HBASE-18398] - Snapshot operation fails with FileNotFoundException
* [HBASE-18448] - EndPoint example for refreshing HFiles for stores
* [HBASE-18458] - Refactor TestRegionServerHostname to make it robust (Port HBASE-17922 to branch-1)
* [HBASE-18552] - Backport the server side change in HBASE-18489 to branch-1
* [HBASE-18656] - Address issues found by error-prone in hbase-common
* [HBASE-18786] - FileNotFoundException should not be silently handled for primary region replicas
* [HBASE-18867] - maven enforcer plugin needs update to work with jdk9
* [HBASE-18957] - add test that confirms 2 FamilyFilters in a FilterList using MUST_PASS_ONE operator will return results that match either of the FamilyFilters and revert as needed to make it pass.
* [HBASE-18980] - Address issues found by error-prone in hbase-hadoop2-compat
* [HBASE-19070] - temporarily make the mvnsite nightly test non-voting.
* [HBASE-19113] - Restore dropped constants from TableInputFormatBase for compatibility
* [HBASE-19131] - Add the ClusterStatus hook and cleanup other hooks which can be replaced by ClusterStatus hook
* [HBASE-19182] - Add deprecation in branch-1 for hbase-prefix-tree so some heads up it removed in hbase2
* [HBASE-19203] - Update Hadoop version used for build to 2.7.4
* [HBASE-19205] - Backport HBASE-18441 ZookeeperWatcher#interruptedException should throw exception
* [HBASE-19243] - Start mini cluster once before class for TestFIFOCompactionPolicy
* [HBASE-19276] - RegionPlan should correctly implement equals and hashCode
* [HBASE-19348] - Fix error-prone errors for branch-1
* [HBASE-19354] - [branch-1] Build using a jdk that is beyond ubuntu trusty's openjdk-151
* [HBASE-19366] - Backport to branch-1 HBASE-19035 Miss metrics when coprocessor use region scanner to read data
* [HBASE-19368] - [nightly] Make xml test non-voting in branch-1.2
* [HBASE-19373] - Fix Checkstyle error in hbase-annotations
** Bug
* [HBASE-7621] - REST client (RemoteHTable) doesn't support binary row keys
* [HBASE-8758] - Error in RegionCoprocessorHost class preScanner method documentation.
* [HBASE-9393] - Hbase does not closing a closed socket resulting in many CLOSE_WAIT
* [HBASE-12088] - Remove un-used profiles in non-root poms
* [HBASE-12091] - Optionally ignore edits for dropped tables for replication.
* [HBASE-12949] - Scanner can be stuck in infinite loop if the HFile is corrupted
* [HBASE-13860] - Remove units from ServerMetricsTmpl.jamon since values are formatted human readable
* [HBASE-14129] - If any regionserver gets shutdown uncleanly during full cluster restart, locality looks to be lost
* [HBASE-14329] - Report region in transition only ever operates on one region
* [HBASE-14753] - TestShell is not invoked anymore
* [HBASE-15109] - HM/RS failed to start when "fs.hdfs.impl.disable.cache" is set to true
* [HBASE-15187] - Integrate CSRF prevention filter to REST gateway
* [HBASE-15236] - Inconsistent cell reads over multiple bulk-loaded HFiles
* [HBASE-15302] - Reenable the other tests disabled by HBASE-14678
* [HBASE-15328] - Unvalidated Redirect in HMaster
* [HBASE-15497] - Incorrect javadoc for atomicity guarantee of Increment and Append
* [HBASE-15528] - Clean up outdated entries in hbase-default.xml
* [HBASE-15548] - SyncTable: sourceHashDir is supposed to be optional but won't work without
* [HBASE-15635] - Mean age of Blocks in cache (seconds) on webUI should be greater than zero
* [HBASE-15711] - Add client side property to allow logging details for batch errors
* [HBASE-15725] - make_patch.sh should add the branch name when -b is passed.
* [HBASE-15769] - Perform validation on cluster key for add_peer
* [HBASE-15783] - AccessControlConstants#OP_ATTRIBUTE_ACL_STRATEGY_CELL_FIRST not used any more.
* [HBASE-15803] - ZooKeeperWatcher's constructor can leak a ZooKeeper instance with throwing ZooKeeperConnectionException when canCreateBaseZNode is true
* [HBASE-15815] - Region mover script sometimes reports stuck region where only one server was involved
* [HBASE-15844] - We should respect hfile.block.index.cacheonwrite when write intermediate index Block
* [HBASE-15845] - Shell Cleanup : move formatter to commands.rb; move one of the two hbase.rb to hbase_constants.rb
* [HBASE-15866] - Split hbase.rpc.timeout into *.read.timeout and *.write.timeout
* [HBASE-15889] - String case conversions are locale-sensitive, used without locale
* [HBASE-15933] - NullPointerException may be thrown from SimpleRegionNormalizer#getRegionSize()
* [HBASE-15947] - Classes used only for tests included in main code base
* [HBASE-15950] - Fix memstore size estimates to be more tighter
* [HBASE-15965] - Shell test changes. Use @shell.command instead directly calling functions in admin.rb and other libraries.
* [HBASE-15990] - The priority value of subsequent coprocessors in the Coprocessor.Priority.SYSTEM list are not incremented by one
* [HBASE-16011] - TableSnapshotScanner and TableSnapshotInputFormat can produce duplicate rows
* [HBASE-16045] - endtime argument for VerifyReplication was incorrectly specified in usage
* [HBASE-16054] - OutOfMemory exception when using AsyncRpcClient with encryption
* [HBASE-16055] - PutSortReducer loses any Visibility/acl attribute set on the Puts
* [HBASE-16058] - TestHRegion fails on 1.4 builds
* [HBASE-16059] - Region normalizer fails to trigger merge action where one of the regions is empty
* [HBASE-16070] - Mapreduce Serialization classes do not have Interface audience
* [HBASE-16090] - ResultScanner is not closed in SyncTable#finishRemainingHashRanges()
* [HBASE-16091] - Canary takes lot more time when there are delete markers in the table
* [HBASE-16118] - TestHFileOutputFormat2 is broken
* [HBASE-16122] - PerformanceEvaluation should provide user friendly hint when client threads argument is missing
* [HBASE-16125] - RegionMover uses hardcoded, Unix-style tmp folder - breaks Windows
* [HBASE-16157] - The incorrect block cache count and size are caused by removing duplicate block key in the LruBlockCache
* [HBASE-16159] - OutOfMemory exception when using AsyncRpcClient with encryption to read rpc response
* [HBASE-16172] - Unify the retry logic in ScannerCallableWithReplicas and RpcRetryingCallerWithReadReplicas
* [HBASE-16182] - Increase IntegrationTestRpcClient timeout
* [HBASE-16209] - Provide an ExponentialBackOffPolicy sleep between failed region open requests
* [HBASE-16235] - TestSnapshotFromMaster#testSnapshotHFileArchiving will fail if there are too many hfiles
* [HBASE-16244] - LocalHBaseCluster start timeout should be configurable
* [HBASE-16293] - TestSnapshotFromMaster#testSnapshotHFileArchiving flakey
* [HBASE-16309] - TestDefaultCompactSelection.testCompactionRatio is flaky
* [HBASE-16345] - RpcRetryingCallerWithReadReplicas#call() should catch some RegionServer Exceptions
* [HBASE-16353] - Deprecate / Remove Get.isClosestRowBefore()
* [HBASE-16356] - REST API scanner: row prefix filter and custom filter parameters are mutually exclusive
* [HBASE-16359] - NullPointerException in RSRpcServices.openRegion()
* [HBASE-16367] - Race between master and region server initialization may lead to premature server abort
* [HBASE-16377] - ServerName check is ineffective in region_mover.rb
* [HBASE-16409] - Row key for bad row should be properly delimited in VerifyReplication
* [HBASE-16444] - CellUtil#estimatedSerializedSizeOfKey() should consider KEY_INFRASTRUCTURE_SIZE
* [HBASE-16495] - When accessed via Thrift, all column families have timeToLive equal to -1
* [HBASE-16515] - AsyncProcess has incorrent count of tasks if the backoff policy is enabled
* [HBASE-16538] - Version mismatch in HBaseConfiguration.checkDefaultsVersion
* [HBASE-16540] - Scan should do additional validation on start and stop row
* [HBASE-16556] - The read/write timeout are not used in HTable.delete(List), HTable.get(List), and HTable.existsAll(List)
* [HBASE-16572] - Sync method in RecoverableZooKeeper failed to pass callback function in
* [HBASE-16576] - Shell add_peer doesn't allow setting cluster_key for custom endpoints
* [HBASE-16611] - Flakey org.apache.hadoop.hbase.client.TestReplicasClient.testCancelOfMultiGet
* [HBASE-16612] - Use array to cache Types for KeyValue.Type.codeToType
* [HBASE-16615] - Fix flaky TestScannerHeartbeatMessages
* [HBASE-16621] - HBCK should have -fixHFileLinks
* [HBASE-16630] - Fragmentation in long running Bucket Cache
* [HBASE-16647] - hbck should do offline reference repair before online repair
* [HBASE-16653] - Backport HBASE-11393 to all branches which support namespace
* [HBASE-16670] - Make RpcServer#processRequest logic more robust
* [HBASE-16675] - Average region size may be incorrect when there is region whose RegionLoad cannot be retrieved
* [HBASE-16716] - OfflineMetaRepair leaves empty directory inside /hbase/WALs which remains forever
* [HBASE-16724] - Snapshot owner can't clone
* [HBASE-16739] - Timed out exception message should include encoded region name
* [HBASE-16762] - NullPointerException is thrown when constructing sourceTable in verifyrep
* [HBASE-16768] - Inconsistent results from the Append/Increment
* [HBASE-16771] - VerifyReplication should increase GOODROWS counter if re-comparison passes
* [HBASE-16801] - The Append/Increment may return the data from future
* [HBASE-16815] - Low scan ratio in RPC queue tuning triggers divide by zero exception
* [HBASE-16816] - HMaster.move() should throw exception if region to move is not online
* [HBASE-16829] - DemoClient should detect secure mode
* [HBASE-16855] - Avoid NPE in MetricsConnection’s construction
* [HBASE-16856] - Exception message in SyncRunner.run() should print currentSequence
* [HBASE-16870] - Add the metrics of replication sources which were transformed from other dead rs to ReplicationLoad
* [HBASE-16886] - hbase-client: scanner with reversed=true and small=true gets no result
* [HBASE-16910] - Avoid NPE when starting StochasticLoadBalancer
* [HBASE-16938] - TableCFsUpdater maybe failed due to no write permission on peerNode
* [HBASE-16939] - ExportSnapshot: set owner and permission on right directory
* [HBASE-16948] - Fix inconsistency between HRegion and Region javadoc on getRowLock
* [HBASE-16962] - Add readPoint to preCompactScannerOpen() and preFlushScannerOpen() API
* [HBASE-16983] - TestMultiTableSnapshotInputFormat failing with Unable to create region directory: /tmp/...
* [HBASE-16985] - TestClusterId failed due to wrong hbase rootdir
* [HBASE-16992] - The usage of mutation from CP is weird.
* [HBASE-16993] - BucketCache throw java.io.IOException: Invalid HFile block magic when configuring hbase.bucketcache.bucket.sizes
* [HBASE-17010] - Serial replication should handle daughter regions being assigned to another RS
* [HBASE-17020] - keylen in midkey() dont computed correctly
* [HBASE-17033] - LogRoller makes a lot of allocations unnecessarily
* [HBASE-17039] - SimpleLoadBalancer schedules large amount of invalid region moves
* [HBASE-17054] - Compactor#preCreateCoprocScanner should be passed user
* [HBASE-17062] - RegionSplitter throws ClassCastException
* [HBASE-17069] - RegionServer writes invalid META entries for split daughters in some circumstances
* [HBASE-17072] - CPU usage starts to climb up to 90-100% when using G1GC; purge ThreadLocal usage
* [HBASE-17095] - The ClientSimpleScanner keeps retrying if the hfile is corrupt or cannot found
* [HBASE-17105] - Annotate RegionServerObserver
* [HBASE-17112] - Prevent setting timestamp of delta operations the same as previous value's
* [HBASE-17116] - [PerformanceEvaluation] Add option to configure block size
* [HBASE-17118] - StoreScanner leaked in KeyValueHeap
* [HBASE-17127] - Locate region should fail fast if underlying Connection already closed
* [HBASE-17131] - Avoid livelock caused by HRegion#processRowsWithLocks
* [HBASE-17170] - HBase is also retrying DoNotRetryIOException because of class loader differences.
* [HBASE-17171] - IntegrationTestTimeBoundedRequestsWithRegionReplicas fails with obtuse error when readers have no time to run
* [HBASE-17187] - DoNotRetryExceptions from coprocessors should bubble up to the application
* [HBASE-17206] - FSHLog may roll a new writer successfully with unflushed entries
* [HBASE-17256] - Rpc handler monitoring will be removed when the task queue is full
* [HBASE-17264] - Processing RIT with offline state will always fail to open the first time
* [HBASE-17265] - Region left unassigned in master failover when region failed to open
* [HBASE-17275] - Assign timeout may cause region to be unassigned forever
* [HBASE-17286] - LICENSE.txt in binary tarball contains only ASL text
* [HBASE-17287] - Master becomes a zombie if filesystem object closes
* [HBASE-17289] - Avoid adding a replication peer named "lock"
* [HBASE-17290] - Potential loss of data for replication of bulk loaded hfiles
* [HBASE-17297] - Single Filter in parenthesis cannot be parsed correctly
* [HBASE-17302] - The region flush request disappeared from flushQueue
* [HBASE-17330] - SnapshotFileCache will always refresh the file cache
* [HBASE-17344] - The regionserver web UIs miss the coprocessors of RegionServerCoprocessorHost.
* [HBASE-17347] - ExportSnapshot may write snapshot info file to wrong directory when specifying target name
* [HBASE-17351] - Enforcer plugin fails with NullPointerException
* [HBASE-17352] - Fix hbase-assembly build with bash 4
* [HBASE-17357] - PerformanceEvaluation parameters parsing triggers NPE.
* [HBASE-17374] - ZKPermissionWatcher crashed when grant after region close
* [HBASE-17381] - ReplicationSourceWorkerThread can die due to unhandled exceptions
* [HBASE-17387] - Reduce the overhead of exception report in RegionActionResult for multi()
* [HBASE-17390] - Online update of configuration for all servers leaves out masters
* [HBASE-17426] - Inconsistent environment variable names for enabling JMX
* [HBASE-17427] - region_mover.rb may move region onto the same server
* [HBASE-17429] - HBase bulkload cannot support HDFS viewFs
* [HBASE-17435] - Call to preCommitStoreFile() hook encounters SaslException in secure deployment
* [HBASE-17445] - Count size of serialized exceptions in checking max result size quota
* [HBASE-17450] - TablePermission#equals throws NPE after namespace support was added
* [HBASE-17452] - Failed taking snapshot - region Manifest proto-message too large
* [HBASE-17460] - enable_table_replication can not perform cyclic replication of a table
* [HBASE-17464] - Fix HBaseTestingUtility.getNewDataTestDirOnTestFS to always return a unique path
* [HBASE-17469] - Properly handle empty TableName in TablePermission#readFields and #write
* [HBASE-17471] - Region Seqid will be out of order in WAL if using mvccPreAssign
* [HBASE-17475] - Stack overflow in AsyncProcess if retry too much
* [HBASE-17489] - ClientScanner may send a next request to a RegionScanner which has been exhausted
* [HBASE-17501] - NullPointerException after Datanodes Decommissioned and Terminated
* [HBASE-17504] - The passed durability of Increment is ignored when syncing WAL
* [HBASE-17510] - DefaultMemStore gets the wrong heap size after rollback
* [HBASE-17519] - Rollback the removed cells
* [HBASE-17522] - RuntimeExceptions from MemoryMXBean should not take down server process
* [HBASE-17534] - SecureBulkLoadClient squashes DoNotRetryIOExceptions from the server
* [HBASE-17540] - Change SASL server GSSAPI callback log line from DEBUG to TRACE in RegionServer to reduce log volumes in DEBUG mode
* [HBASE-17558] - ZK dumping jsp should escape html
* [HBASE-17565] - StochasticLoadBalancer may incorrectly skip balancing due to skewed multiplier sum
* [HBASE-17578] - Thrift per-method metrics should still update in the case of exceptions
* [HBASE-17587] - Do not Rethrow DoNotRetryIOException as UnknownScannerException
* [HBASE-17590] - Drop cache hint should work for StoreFile write path
* [HBASE-17597] - TestMetaWithReplicas.testMetaTableReplicaAssignment is flaky
* [HBASE-17601] - close() in TableRecordReaderImpl assumes the split has started
* [HBASE-17603] - REST API for scan should return 404 when table does not exist
* [HBASE-17607] - Rest api for scan should return 404 when table not exists
* [HBASE-17611] - Thrift 2 per-call latency metrics are capped at ~ 2 seconds
* [HBASE-17616] - Incorrect actions performed by CM
* [HBASE-17617] - Backport HBASE-16731 (Inconsistent results from the Get/Scan if we use the empty FilterList) to branch-1
* [HBASE-17639] - Do not stop server if ReplicationSourceManager's waitUntilCanBePushed throws InterruptedException
* [HBASE-17648] - HBase Table-level synchronization fails between two secured(kerberized) clusters
* [HBASE-17649] - REST API for scan should return 410 when table is disabled
* [HBASE-17658] - Fix bookkeeping error with max regions for a table
* [HBASE-17661] - fix the queue length passed to FastPathBalancedQueueRpcExecutor
* [HBASE-17673] - Monitored RPC Handler not shown in the WebUI
* [HBASE-17674] - Major compaction may be cancelled in CompactionChecker
* [HBASE-17675] - ReplicationEndpoint should choose new sinks if a SaslException occurs
* [HBASE-17677] - ServerName parsing from directory name should be more robust to errors from guava's HostAndPort
* [HBASE-17682] - Region stuck in merging_new state indefinitely
* [HBASE-17688] - MultiRowRangeFilter not working correctly if given same start and stop RowKey
* [HBASE-17698] - ReplicationEndpoint choosing sinks
* [HBASE-17710] - HBase in standalone mode creates directories with 777 permission
* [HBASE-17712] - Remove/Simplify the logic of RegionScannerImpl.handleFileNotFound
* [HBASE-17713] - the interface '/version/cluster' with header 'Accept: application/json' return is not JSON but plain text
* [HBASE-17717] - Incorrect ZK ACL set for HBase superuser
* [HBASE-17718] - Difference between RS's servername and its ephemeral node cause SSH stop working
* [HBASE-17722] - Metrics subsystem stop/start messages add a lot of useless bulk to operational logging
* [HBASE-17729] - Missing shortcuts for some useful HCD options
* [HBASE-17736] - Some options can't be configured by the shell
* [HBASE-17746] - TestSimpleRpcScheduler.testCoDelScheduling is broken
* [HBASE-17761] - Test TestRemoveRegionMetrics.testMoveRegion fails intermittently because of race condition
* [HBASE-17764] - Solve TestMultiSlaveReplication flakiness
* [HBASE-17773] - VerifyReplication tool wrongly emits warning "ERROR: Invalid argument '--recomparesleep=xx'"
* [HBASE-17779] - disable_table_replication returns misleading message and does not turn off replication
* [HBASE-17780] - BoundedByteBufferPool "At capacity" messages are not actionable
* [HBASE-17798] - RpcServer.Listener.Reader can abort due to CancelledKeyException
* [HBASE-17803] - PE always re-creates table when we specify the split policy
* [HBASE-17816] - HRegion#mutateRowWithLocks should update writeRequestCount metric
* [HBASE-17821] - The CompoundConfiguration#toString is wrong
* [HBASE-17861] - Regionserver down when checking the permission of staging dir if hbase.rootdir is on S3
* [HBASE-17862] - Condition that always returns true
* [HBASE-17869] - UnsafeAvailChecker wrongly returns false on ppc
* [HBASE-17871] - scan#setBatch(int) call leads wrong result of VerifyReplication
* [HBASE-17886] - Fix compatibility of ServerSideScanMetrics
* [HBASE-17893] - Allow HBase to build against Hadoop 2.8.0
* [HBASE-17904] - Get runs into NoSuchElementException when using Read Replica, with hbase. ipc.client.specificThreadForWriting to be true and hbase.rpc.client.impl to be org.apache.hadoop.hbase.ipc.RpcClientImpl
* [HBASE-17930] - Avoid using Canary.sniff in HBaseTestingUtility
* [HBASE-17931] - Assign system tables to servers with highest version
* [HBASE-17937] - Memstore size becomes negative in case of expensive postPut/Delete Coprocessor call
* [HBASE-17958] - Avoid passing unexpected cell to ScanQueryMatcher when optimize SEEK to SKIP
* [HBASE-17985] - Inline package manage updates with package installation in Yetus Dockerfile
* [HBASE-17991] - Add more details about compaction queue on /dump
* [HBASE-17993] - Delete useless info log in RpcServer.processResponse
* [HBASE-18000] - Make sure we always return the scanner id with ScanResponse
* [HBASE-18005] - read replica: handle the case that region server hosting both primary replica and meta region is down
* [HBASE-18014] - A case of Region remain unassigned when table enabled
* [HBASE-18024] - HRegion#initializeRegionInternals should not re-create .hregioninfo file when the region directory no longer exists
* [HBASE-18025] - CatalogJanitor should collect outdated RegionStates from the AM
* [HBASE-18026] - ProtobufUtil seems to do extra array copying
* [HBASE-18027] - Replication should respect RPC size limits when batching edits
* [HBASE-18030] - Per Cell TTL tags may get duplicated with increments/Append causing tags length overflow
* [HBASE-18035] - Meta replica does not give any primaryOperationTimeout to primary meta region
* [HBASE-18036] - HBase 1.x : Data locality is not maintained after cluster restart or SSH
* [HBASE-18042] - Client Compatibility breaks between versions 1.2 and 1.3
* [HBASE-18054] - log when we add/remove failed servers in client
* [HBASE-18058] - Zookeeper retry sleep time should have an upper limit
* [HBASE-18066] - Get with closest_row_before on "hbase:meta" can return empty Cell during region merge/split
* [HBASE-18069] - Fix flaky test TestReplicationAdminWithClusters#testDisableAndEnableReplication
* [HBASE-18077] - Update JUnit license to EPL from CPL
* [HBASE-18081] - The way we process connection preamble in SimpleRpcServer is broken
* [HBASE-18092] - Removing a peer does not properly clean up the ReplicationSourceManager state and metrics
* [HBASE-18093] - Overloading the meaning of 'enabled' in Quota Manager to indicate either quota disabled or quota manager not ready is not good
* [HBASE-18099] - FlushSnapshotSubprocedure should wait for concurrent Region#flush() to finish
* [HBASE-18111] - Replication stuck when cluster connection is closed
* [HBASE-18113] - Handle old client without include_stop_row flag when startRow equals endRow
* [HBASE-18122] - Scanner id should include ServerName of region server
* [HBASE-18125] - HBase shell disregards spaces at the end of a split key in a split file
* [HBASE-18129] - truncate_preserve fails when the truncate method doesn't exists on the master
* [HBASE-18132] - Low replication should be checked in period in case of datanode rolling upgrade
* [HBASE-18137] - Replication gets stuck for empty WALs
* [HBASE-18141] - Regionserver fails to shutdown when abort triggered in RegionScannerImpl during RPC call
* [HBASE-18142] - Deletion of a cell deletes the previous versions too
* [HBASE-18145] - The flush may cause the corrupt data for reading
* [HBASE-18149] - The setting rules for table-scope attributes and family-scope attributes should keep consistent
* [HBASE-18150] - hbase.version file is created under both hbase.rootdir and hbase.wal.dir
* [HBASE-18159] - Use OpenJDK7 instead of Oracle JDK7 in pre commit docker file
* [HBASE-18167] - OfflineMetaRepair tool may cause HMaster abort always
* [HBASE-18180] - Possible connection leak while closing BufferedMutator in TableOutputFormat
* [HBASE-18184] - Add hbase-hadoop2-compat jar as MapReduce job dependency
* [HBASE-18185] - IntegrationTestTimeBoundedRequestsWithRegionReplicas unbalanced tests fails with AssertionError
* [HBASE-18192] - Replication drops recovered queues on region server shutdown
* [HBASE-18197] - Avoided to call job.waitForCompletion(true) two times
* [HBASE-18199] - Race in NettyRpcConnection may cause call stuck in BufferCallBeforeInitHandler forever
* [HBASE-18212] - In Standalone mode with local filesystem HBase logs Warning message:Failed to invoke 'unbuffer' method in class class org.apache.hadoop.fs.FSDataInputStream
* [HBASE-18219] - Fix typo in constant HConstants.HBASE_CLIENT_MEAT_REPLICA_SCAN_TIMEOUT
* [HBASE-18230] - Generated LICENSE file includes unsubstituted Velocity variables
* [HBASE-18233] - We shouldn't wait for readlock in doMiniBatchMutation in case of deadlock
* [HBASE-18247] - Hbck to fix the case that replica region shows as key in the meta table
* [HBASE-18255] - Time-Delayed HBase Performance Degradation with Java 7
* [HBASE-18267] - The result from the postAppend is ignored
* [HBASE-18323] - Remove multiple ACLs for the same user in kerberos
* [HBASE-18330] - NPE in ReplicationZKLockCleanerChore
* [HBASE-18340] - TestXXXProcedure tests hanging or failing on branch-1 (branch-1.4)
* [HBASE-18346] - TestRSKilledWhenInitializing failing on branch-1 (branch-1.4)
* [HBASE-18358] - Backport HBASE-18099 'FlushSnapshotSubprocedure should wait for concurrent Region#flush() to finish' to branch-1.3
* [HBASE-18362] - hbck should not report split replica parent region from meta as errors
* [HBASE-18377] - Error handling for FileNotFoundException should consider RemoteException in openReader()
* [HBASE-18390] - Sleep too long when finding region location failed
* [HBASE-18401] - Region Replica shows up in meta table after split
* [HBASE-18431] - Mitigate compatibility concerns between branch-1.3 and branch-1.4
* [HBASE-18437] - Revoke access permissions of a user from a table does not work as expected
* [HBASE-18438] - Precommit doesn't warn about unused imports
* [HBASE-18441] - ZookeeperWatcher#interruptedException should throw exception
* [HBASE-18447] - MetricRegistryInfo#hashCode uses hashCode instead of toHashCode
* [HBASE-18461] - Build broken If the username contains a backslash
* [HBASE-18470] - Remove the redundant comma from RetriesExhaustedWithDetailsException#getDesc
* [HBASE-18471] - The DeleteFamily cell is skipped when StoreScanner seeks to next column
* [HBASE-18473] - VC.listLabels() erroneously closes any connection
* [HBASE-18476] - HTable#put should call RS#mutate rather than RS#multi
* [HBASE-18479] - should apply HBASE-18255 to HBASE_MASTER_OPTS too
* [HBASE-18480] - The cost of BaseLoadBalancer.cluster is changed even if the rollback is done
* [HBASE-18481] - The autoFlush flag was not used in PE tool
* [HBASE-18487] - Minor fixes in row lock implementation
* [HBASE-18505] - Our build/yetus personality will run tests on individual modules and then on all (i.e. 'root'). Should do one or other
* [HBASE-18512] - Region Server will abort with IllegalStateException if HDFS umask has limited scope
* [HBASE-18526] - FIFOCompactionPolicy pre-check uses wrong scope
* [HBASE-18568] - Correct metric of numRegions
* [HBASE-18572] - Delete can't remove the cells which have no visibility label
* [HBASE-18577] - shaded client includes several non-relocated third party dependencies
* [HBASE-18587] - Fix Flaky TestFileIOEngine
* [HBASE-18589] - branch-1.4 build compile is broken
* [HBASE-18607] - fix submit-patch.py to support utf8
* [HBASE-18614] - Setting BUCKET_CACHE_COMBINED_KEY to false disables stats on RS UI
* [HBASE-18616] - Shell warns about already initialized constants at startup
* [HBASE-18617] - FuzzyRowKeyFilter should not modify the filter pairs
* [HBASE-18626] - Handle the incompatible change about the replication TableCFs' config
* [HBASE-18628] - ZKPermissionWatcher blocks all ZK notifications
* [HBASE-18633] - Add more info to understand the source/scenario of large batch requests exceeding threshold
* [HBASE-18641] - Include block content verification logic used in lruCache in bucketCache
* [HBASE-18644] - Duplicate "compactionQueueLength" metric in Region Server metrics
* [HBASE-18647] - Parameter cacheBlocks does not take effect in REST API for scan
* [HBASE-18665] - ReversedScannerCallable invokes getRegionLocations incorrectly
* [HBASE-18671] - Support Append/Increment in rest api
* [HBASE-18679] - YARN may null Counters object and cause an NPE in ITBLL
* [HBASE-18743] - HFiles in use by a table which has the same name and namespace with a default table cloned from snapshot may be deleted when that snapshot and default table are deleted
* [HBASE-18757] - Fix Improper bitwise & in BucketCache offset calculation
* [HBASE-18762] - Canary sink type cast error
* [HBASE-18771] - Incorrect StoreFileRefresh leading to split and compaction failures
* [HBASE-18789] - Displays the reporting interval of each RS on the Master page
* [HBASE-18796] - Admin#isTableAvailable returns incorrect result before daughter regions are opened
* [HBASE-18801] - Bulk load cleanup may falsely deem file deletion successful
* [HBASE-18810] - TestClientScannerRPCTimeout failing in branch-1 / branch-1.4
* [HBASE-18813] - TestCanaryTool fails on branch-1 / branch-1.4
* [HBASE-18818] - TestConnectionImplemenation fails
* [HBASE-18830] - TestCanaryTool does not check Canary monitor's error code
* [HBASE-18885] - HFileOutputFormat2 hardcodes default FileOutputCommitter
* [HBASE-18890] - Backport HBASE-14499 (Master coprocessors shutdown will not happen on master abort) to branch-1
* [HBASE-18921] - Result.current() throws ArrayIndexOutOfBoundsException after calling advance()
* [HBASE-18923] - TestTableResource flaky on branch-1
* [HBASE-18934] - precommit on branch-1 isn't supposed to run against hadoop 3
* [HBASE-18940] - branch-2 (and probably others) fail check of generated source artifact
* [HBASE-18942] - hbase-hadoop2-compat module ignores hadoop-3 profile
* [HBASE-18959] - Backport HBASE-18874 (HMaster abort message will be skipped if Throwable is passed null) to branch-1
* [HBASE-18998] - processor.getRowsToLock() always assumes there is some row being locked
* [HBASE-19014] - surefire fails; When writing xml report stdout/stderr ... No such file or directory
* [HBASE-19020] - TestXmlParsing exception checking relies on a particular xml implementation without declaring it.
* [HBASE-19030] - nightly runs should attempt to log test results after archiving
* [HBASE-19035] - Miss metrics when coprocessor use region scanner to read data
* [HBASE-19038] - precommit mvn install should run from root on patch
* [HBASE-19039] - refactor shadedjars test to only run on java changes.
* [HBASE-19055] - Backport HBASE-19042 to other active branches
* [HBASE-19056] - TestCompactionInDeadRegionServer is top of the flakies charts!
* [HBASE-19058] - The wget isn't installed in building docker image
* [HBASE-19060] - "Hadoop check" test is running all the time instead of just when changes to java
* [HBASE-19061] - enforcer NPE on hbase-shaded-invariants
* [HBASE-19066] - Correct the directory of openjdk-8 for jenkins
* [HBASE-19072] - Missing break in catch block of InterruptedException in HRegion#waitForFlushes()
* [HBASE-19088] - move_tables_rsgroup will throw an exception when the table is disabled
* [HBASE-19094] - NPE in RSGroupStartupWorker.waitForGroupTableOnline during master startup
* [HBASE-19098] - Python based compatiblity checker fails if git repo does not have a remote named 'origin'
* [HBASE-19102] - TestZooKeeperMainServer fails with KeeperException$ConnectionLossException
* [HBASE-19124] - Move HBase-Nightly source artifact creation test from JenkinsFile to a script in dev-support
* [HBASE-19129] - TestChoreService is flaky (branch-1 / branch-1.4)
* [HBASE-19137] - Nightly test should make junit reports optional rather than attempt archive after reporting.
* [HBASE-19138] - Rare failure in TestLruBlockCache
* [HBASE-19144] - [RSgroups] Retry assignments in FAILED_OPEN state when servers (re)join the cluster
* [HBASE-19150] - TestSnapshotWithAcl is flaky
* [HBASE-19156] - Duplicative regions_per_server options on LoadTestTool
* [HBASE-19173] - Configure IntegrationTestRSGroup automatically for minicluster mode
* [HBASE-19184] - clean up nightly source artifact test to match expectations from switch to git-archive
* [HBASE-19188] - Build fails on branch-1 using maven-3.5.2
* [HBASE-19194] - TestRSGroupsBase has some always false checks
* [HBASE-19195] - More error-prone fixes
* [HBASE-19198] - TestIPv6NIOServerSocketChannel fails; unable to bind
* [HBASE-19215] - Incorrect exception handling on the client causes incorrect call timeouts and byte buffer allocations on the server
* [HBASE-19223] - Remove references to Date Tiered compaction from branch-1.2 and branch-1.1 ref guide
* [HBASE-19229] - Nightly script to check source artifact should not do a destructive git operation without opt-in
* [HBASE-19245] - MultiTableInputFormatBase#getSplits creates a Connection per Table
* [HBASE-19249] - test for "hbase antipatterns" should check _count_ of occurance rather than text of
* [HBASE-19250] - TestClientClusterStatus is flaky
* [HBASE-19260] - Add lock back to avoid parallel accessing meta to locate region
* [HBASE-19285] - Add per-table latency histograms
* [HBASE-19300] - TestMultithreadedTableMapper fails in branch-1.4
* [HBASE-19325] - Pass a list of server name to postClearDeadServers
* [HBASE-19350] - TestMetaWithReplicas is flaky
* [HBASE-19376] - Fix more binary compatibility problems with branch-1.4 / branch-1
* [HBASE-19379] - TestEndToEndSplitTransaction fails with NPE
* [HBASE-19381] - TestGlobalThrottler doesn't make progress (branch-1.4)
* [HBASE-19385] - [1.3] TestReplicator failed 1.3 nightly
* [HBASE-19388] - Incorrect value is being set for Compaction Pressure in RegionLoadStats object inside HRegion class
* [HBASE-19393] - HTTP 413 FULL head while accessing HBase UI using SSL.
* [HBASE-19395] - [branch-1] TestEndToEndSplitTransaction.testMasterOpsWhileSplitting fails with NPE
* [HBASE-19396] - Fix flaky test TestHTableMultiplexerFlushCache
* [HBASE-19406] - Fix CompactionRequest equals and hashCode
* [HBASE-19421] - branch-1 does not compile against Hadoop 3.0.0
* [HBASE-19422] - using hadoop-profile property leads to confusing failures
* [HBASE-19423] - Replication entries are not filtered correctly when replication scope is set through WAL Co-processor
* [HBASE-19429] - Release build fails in checkstyle phase of site target (branch-1)
* [HBASE-19435] - Reopen Files for ClosedChannelException in BucketCache
* [HBASE-19440] - Not able to enable balancer with RSGroups once disabled
* [HBASE-19442] - Backport HBASE-19065 to branch-1 (HRegion#bulkLoadHFiles() should wait for concurrent Region#flush() to finish)
* [HBASE-19445] - PerformanceEvaluation NPE processing split policy option
* [HBASE-19446] - Misspelled 'default' in SimpleRpcScheduler
* [HBASE-19447] - INFO level logging of GetClusterStatus from HMaster is too chatty
* [HBASE-19465] - Required httpcore and httpclient jars not included in binary distribution
* [HBASE-19467] - rsgroups shell commands don't properly display elapsed time
** Improvement
* [HBASE-11013] - Clone Snapshots on Secure Cluster Should provide option to apply Retained User Permissions
* [HBASE-12350] - Backport error-prone build support to branch-1 and branch-2
* [HBASE-12770] - Don't transfer all the queued hlogs of a dead server to the same alive server
* [HBASE-12870] - "Major compaction triggered" and "Skipping major compaction" messages lack the region information
* [HBASE-13718] - Add a pretty printed table description to the table detail page of HBase's master
* [HBASE-14007] - Writing to table through MR should fail upfront if table does not exist/is disabled
* [HBASE-14220] - nightly tests should verify src tgz generates and builds correctly
* [HBASE-14548] - Expand how table coprocessor jar and dependency path can be specified
* [HBASE-14574] - TableOutputFormat#getRecordWriter javadoc misleads
* [HBASE-14871] - Allow specifying the base branch for make_patch
* [HBASE-14925] - Develop HBase shell command/tool to list table's region info through command line
* [HBASE-14985] - TimeRange constructors should set allTime when appropriate
* [HBASE-15191] - CopyTable and VerifyReplication - Option to specify batch size, versions
* [HBASE-15243] - Utilize the lowest seek value when all Filters in MUST_PASS_ONE FilterList return SEEK_NEXT_USING_HINT
* [HBASE-15429] - Add a split policy for busy regions
* [HBASE-15451] - Remove unnecessary wait in MVCC
* [HBASE-15496] - Throw RowTooBigException only for user scan/get
* [HBASE-15529] - Override needBalance in StochasticLoadBalancer
* [HBASE-15571] - Make MasterProcedureManagerHost accessible through MasterServices
* [HBASE-15614] - Report metrics from JvmPauseMonitor
* [HBASE-15686] - Add override mechanism for the exempt classes when dynamically loading table coprocessor
* [HBASE-15727] - Canary Tool for Zookeeper
* [HBASE-15802] - ConnectionUtils should use ThreadLocalRandom instead of Random
* [HBASE-15816] - Provide client with ability to set priority on Operations
* [HBASE-15842] - SnapshotInfo should display ownership information
* [HBASE-15843] - Replace RegionState.getRegionInTransition() Map with a Set
* [HBASE-15849] - Shell Cleanup: Simplify handling of commands' runtime
* [HBASE-15924] - Enhance hbase services autorestart capability to hbase-daemon.sh
* [HBASE-15941] - HBCK repair should not unsplit healthy splitted region
* [HBASE-16008] - A robust way deal with early termination of HBCK
* [HBASE-16052] - Improve HBaseFsck Scalability
* [HBASE-16108] - RowCounter should support multiple key ranges
* [HBASE-16114] - Get regionLocation of required regions only for MR jobs
* [HBASE-16116] - Remove redundant pattern *.iml
* [HBASE-16147] - Add ruby wrapper for getting compaction state
* [HBASE-16188] - Add EventCounter information to log4j properties file
* [HBASE-16220] - Demote log level for "HRegionFileSystem - No StoreFiles for" messages to TRACE
* [HBASE-16224] - Reduce the number of RPCs for the large PUTs
* [HBASE-16225] - Refactor ScanQueryMatcher
* [HBASE-16262] - Update RegionsInTransition UI for branch-1
* [HBASE-16275] - Change ServerManager#onlineServers from ConcurrentHashMap to ConcurrentSkipListMap