Added: dev/hbase/2.2.1RC2/CHANGES.md
==============================================================================
--- dev/hbase/2.2.1RC2/CHANGES.md (added)
+++ dev/hbase/2.2.1RC2/CHANGES.md Tue Sep 10 06:56:29 2019
@@ -0,0 +1,934 @@
+# HBASE Changelog
+
+<!---
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Be careful doing manual edits in this file. Do not change format
+# of release header or remove the below marker. This file is generated.
+# DO NOT REMOVE THIS MARKER; FOR INTERPOLATING CHANGES!-->
+## Release 2.2.1 - Unreleased (as of 2019-09-04)
+
+### INCOMPATIBLE CHANGES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-22690](https://issues.apache.org/jira/browse/HBASE-22690) | Deprecate 
/ Remove OfflineMetaRepair in hbase-2+ |  Major | hbck2 |
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-15666](https://issues.apache.org/jira/browse/HBASE-15666) | shaded 
dependencies for hbase-testing-util |  Critical | test |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-22724](https://issues.apache.org/jira/browse/HBASE-22724) | Add a 
emoji on the vote table for pre commit result on github |  Major | build, test |
+| [HBASE-22954](https://issues.apache.org/jira/browse/HBASE-22954) | Whitelist 
net.java.dev.jna which got pulled in through Hadoop 3.3.0 |  Minor | community, 
hadoop3 |
+| [HBASE-22905](https://issues.apache.org/jira/browse/HBASE-22905) | Avoid 
temp ByteBuffer allocation in BlockingRpcConnection#writeRequest |  Major | . |
+| [HBASE-22962](https://issues.apache.org/jira/browse/HBASE-22962) | Fix typo 
in javadoc description |  Minor | documentation |
+| [HBASE-22933](https://issues.apache.org/jira/browse/HBASE-22933) | Do not 
need to kick reassign for rs group change any more |  Major | rsgroup |
+| [HBASE-22872](https://issues.apache.org/jira/browse/HBASE-22872) | Don't 
create normalization plan unnecesarily when split and merge both are disabled | 
 Minor | . |
+| [HBASE-20509](https://issues.apache.org/jira/browse/HBASE-20509) | Put List 
in HashSet directly without using addAll function to improve performance |  
Trivial | Performance |
+| [HBASE-21996](https://issues.apache.org/jira/browse/HBASE-21996) | Set 
locale for javadoc |  Major | documentation |
+| [HBASE-22464](https://issues.apache.org/jira/browse/HBASE-22464) | 
Improvements to hbase-vote script |  Trivial | scripts |
+| [HBASE-22810](https://issues.apache.org/jira/browse/HBASE-22810) | 
Initialize an separate ThreadPoolExecutor for taking/restoring snapshot |  
Major | . |
+| [HBASE-22844](https://issues.apache.org/jira/browse/HBASE-22844) | Fix 
Checkstyle issues in client snapshot exceptions |  Minor | Client |
+| [HBASE-22871](https://issues.apache.org/jira/browse/HBASE-22871) | Move the 
DirScanPool out and do not use static field |  Major | master |
+| [HBASE-22841](https://issues.apache.org/jira/browse/HBASE-22841) | 
TimeRange's factory functions do not support ranges, only \`allTime\` and 
\`at\` |  Major | Client |
+| [HBASE-22828](https://issues.apache.org/jira/browse/HBASE-22828) | Log a 
region close journal |  Minor | . |
+| [HBASE-22812](https://issues.apache.org/jira/browse/HBASE-22812) | 
InterfaceAudience annotation in CatalogJanitor uses fully-qualified name |  
Minor | . |
+| [HBASE-22800](https://issues.apache.org/jira/browse/HBASE-22800) | Add 
mapreduce dependencies to hbase-shaded-testing-util |  Major | . |
+| [HBASE-22731](https://issues.apache.org/jira/browse/HBASE-22731) | 
ReplicationSource and HBaseInterClusterReplicationEndpoint log messages should 
include a target Peer identifier |  Minor | Replication |
+| [HBASE-22759](https://issues.apache.org/jira/browse/HBASE-22759) | Add user 
info to AUDITLOG events when doing grant/revoke |  Major | logging, security |
+| [HBASE-22785](https://issues.apache.org/jira/browse/HBASE-22785) | Reduce 
number of Checkstyle issues in client exceptions |  Minor | Client |
+| [HBASE-22786](https://issues.apache.org/jira/browse/HBASE-22786) | Fix 
Checkstyle issues in tests of hbase-client |  Minor | Client |
+| [HBASE-22677](https://issues.apache.org/jira/browse/HBASE-22677) | Add unit 
tests for org.apache.hadoop.hbase.util.ByteRangeUtils and 
org.apache.hadoop.hbase.util.Classes |  Major | java, test |
+| [HBASE-22787](https://issues.apache.org/jira/browse/HBASE-22787) | Clean up 
of tests in hbase-zookeeper |  Minor | Zookeeper |
+| [HBASE-22363](https://issues.apache.org/jira/browse/HBASE-22363) | Remove 
hardcoded number of read cache block buckets |  Trivial | BlockCache, 
BucketCache |
+| [HBASE-22764](https://issues.apache.org/jira/browse/HBASE-22764) | Fix 
remaining Checkstyle issues in hbase-rsgroup |  Trivial | rsgroup |
+| [HBASE-22763](https://issues.apache.org/jira/browse/HBASE-22763) | Fix 
remaining Checkstyle issue in hbase-procedure |  Trivial | . |
+| [HBASE-22743](https://issues.apache.org/jira/browse/HBASE-22743) | 
ClientUtils for hbase-examples |  Minor | . |
+| [HBASE-22750](https://issues.apache.org/jira/browse/HBASE-22750) | Correct 
@throws in comment |  Trivial | Client, rpc |
+| [HBASE-22702](https://issues.apache.org/jira/browse/HBASE-22702) | [Log] 
'Group not found for table' is chatty |  Trivial | . |
+| [HBASE-22721](https://issues.apache.org/jira/browse/HBASE-22721) | Refactor 
HBaseFsck: move the inner class out |  Major | . |
+| [HBASE-22692](https://issues.apache.org/jira/browse/HBASE-22692) | Rubocop 
definition is not used in the /bin directory |  Minor | . |
+| [HBASE-22610](https://issues.apache.org/jira/browse/HBASE-22610) | 
[BucketCache] Rename "hbase.offheapcache.minblocksize" |  Trivial | . |
+| [HBASE-22704](https://issues.apache.org/jira/browse/HBASE-22704) | Avoid NPE 
when access table.jsp and snapshot.jsp but master not finish initialization |  
Minor | . |
+| [HBASE-22643](https://issues.apache.org/jira/browse/HBASE-22643) | Delete 
region without archiving only if regiondir is present |  Major | HFile |
+| [HBASE-22689](https://issues.apache.org/jira/browse/HBASE-22689) | Line 
break for fix version in documentation |  Trivial | documentation |
+| [HBASE-22638](https://issues.apache.org/jira/browse/HBASE-22638) | Zookeeper 
Utility enhancements |  Minor | Zookeeper |
+| [HBASE-22669](https://issues.apache.org/jira/browse/HBASE-22669) | Add unit 
tests for org.apache.hadoop.hbase.util.Strings |  Major | java |
+| [HBASE-22403](https://issues.apache.org/jira/browse/HBASE-22403) | Balance 
in RSGroup should consider throttling and a failure affects the whole |  Major 
| rsgroup |
+| [HBASE-22604](https://issues.apache.org/jira/browse/HBASE-22604) | fix the 
link in the docs to "Understanding HBase and BigTable" by Jim R. Wilson |  
Trivial | documentation |
+| [HBASE-22624](https://issues.apache.org/jira/browse/HBASE-22624) | Should 
sanity check table configuration when clone snapshot to a new table |  Major | 
. |
+| [HBASE-22633](https://issues.apache.org/jira/browse/HBASE-22633) | Remove 
redundant call to substring for ZKReplicationQueueStorage |  Minor | . |
+| [HBASE-22595](https://issues.apache.org/jira/browse/HBASE-22595) | Use full 
qualified name in Checkstyle suppressions |  Trivial | . |
+| [HBASE-22454](https://issues.apache.org/jira/browse/HBASE-22454) | refactor 
WALSplitter |  Major | wal |
+| [HBASE-22616](https://issues.apache.org/jira/browse/HBASE-22616) | 
responseTooXXX logging for Multi should characterize the component ops |  Minor 
| . |
+| [HBASE-22596](https://issues.apache.org/jira/browse/HBASE-22596) | [Chore] 
Separate the execution period between CompactionChecker and 
PeriodicMemStoreFlusher |  Minor | Compaction |
+| [HBASE-22561](https://issues.apache.org/jira/browse/HBASE-22561) | modify 
HFilePrettyPrinter to accept non-hbase.rootdir directories |  Minor | . |
+| [HBASE-22344](https://issues.apache.org/jira/browse/HBASE-22344) | Document 
deprecated public APIs |  Major | API, community, documentation |
+| [HBASE-22593](https://issues.apache.org/jira/browse/HBASE-22593) | Add local 
Jenv file to gitignore |  Trivial | . |
+| [HBASE-22116](https://issues.apache.org/jira/browse/HBASE-22116) | 
HttpDoAsClient to support keytab and principal in command line argument. |  
Major | . |
+| [HBASE-22160](https://issues.apache.org/jira/browse/HBASE-22160) | Add 
sorting functionality in regionserver web UI for user regions |  Minor | 
monitoring, regionserver, UI, Usability |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-22970](https://issues.apache.org/jira/browse/HBASE-22970) | split 
parents show as overlaps in the HBCK Report |  Major | . |
+| [HBASE-22961](https://issues.apache.org/jira/browse/HBASE-22961) | Deprecate 
hbck1 in core |  Major | hbck |
+| [HBASE-22896](https://issues.apache.org/jira/browse/HBASE-22896) | 
TestHRegion.testFlushMarkersWALFail is flaky |  Minor | . |
+| [HBASE-22943](https://issues.apache.org/jira/browse/HBASE-22943) | Various 
procedures should not cache log trace level |  Minor | proc-v2 |
+| [HBASE-22881](https://issues.apache.org/jira/browse/HBASE-22881) | Fix 
non-daemon threads in hbase server implementation |  Major | master |
+| [HBASE-22893](https://issues.apache.org/jira/browse/HBASE-22893) | Change 
the comment in HBaseClassTestRule to reflect change in default test timeouts |  
Trivial | . |
+| [HBASE-22928](https://issues.apache.org/jira/browse/HBASE-22928) | 
ScanMetrics counter update may not happen in case of exception in 
TableRecordReaderImpl |  Minor | mapreduce |
+| [HBASE-22941](https://issues.apache.org/jira/browse/HBASE-22941) | 
MetaTableAccessor.getMergeRegions() returns parent regions in random order |  
Major | . |
+| [HBASE-22935](https://issues.apache.org/jira/browse/HBASE-22935) | 
TaskMonitor warns MonitoredRPCHandler task may be stuck when it recently 
started |  Minor | logging |
+| [HBASE-22857](https://issues.apache.org/jira/browse/HBASE-22857) | Fix the 
failed ut TestHRegion and TestHRegionWithInMemoryFlush |  Major | . |
+| [HBASE-22922](https://issues.apache.org/jira/browse/HBASE-22922) | Only the 
two first regions are locked in MergeTableRegionsProcedure |  Major | . |
+| [HBASE-22852](https://issues.apache.org/jira/browse/HBASE-22852) | hbase 
nightlies leaking gpg-agents |  Minor | build |
+| [HBASE-22867](https://issues.apache.org/jira/browse/HBASE-22867) | The 
ForkJoinPool in CleanerChore will spawn thousands of threads in our cluster 
with thousands table |  Critical | master |
+| [HBASE-22904](https://issues.apache.org/jira/browse/HBASE-22904) | NPE 
occurs when RS send space quota usage report during HMaster init |  Minor | . |
+| [HBASE-22806](https://issues.apache.org/jira/browse/HBASE-22806) | Deleted 
CF are not cleared if memstore contain entries |  Major | API |
+| [HBASE-22601](https://issues.apache.org/jira/browse/HBASE-22601) | 
Misconfigured addition of peers leads to cluster shutdown. |  Major | . |
+| [HBASE-22863](https://issues.apache.org/jira/browse/HBASE-22863) | Avoid 
Jackson versions and dependencies with known CVEs |  Major | dependencies |
+| [HBASE-22879](https://issues.apache.org/jira/browse/HBASE-22879) | 
user\_permission command failed to show global permission |  Major | . |
+| [HBASE-22882](https://issues.apache.org/jira/browse/HBASE-22882) | 
TestFlushSnapshotFromClient#testConcurrentSnapshottingAttempts is flakey (was 
written flakey) |  Major | test |
+| [HBASE-22870](https://issues.apache.org/jira/browse/HBASE-22870) | 
reflection fails to access a private nested class |  Major | master |
+| [HBASE-22860](https://issues.apache.org/jira/browse/HBASE-22860) | Master's 
webui returns NPE/HTTP 500 under maintenance mode |  Major | master, UI |
+| [HBASE-22856](https://issues.apache.org/jira/browse/HBASE-22856) | 
HBASE-Find-Flaky-Tests fails with pip error |  Major | build, test |
+| [HBASE-22632](https://issues.apache.org/jira/browse/HBASE-22632) | 
SplitTableRegionProcedure and MergeTableRegionsProcedure should skip store 
files for unknown column families |  Major | proc-v2 |
+| [HBASE-22838](https://issues.apache.org/jira/browse/HBASE-22838) | 
assembly:single failure: user id or group id 'xxxxx' is too big |  Major | 
build |
+| [HBASE-22417](https://issues.apache.org/jira/browse/HBASE-22417) | 
DeleteTableProcedure.deleteFromMeta method should remove table from Master's 
table descriptors cache |  Major | . |
+| [HBASE-22539](https://issues.apache.org/jira/browse/HBASE-22539) | WAL 
corruption due to early DBBs re-use when Durability.ASYNC\_WAL is used |  
Blocker | rpc, wal |
+| [HBASE-22801](https://issues.apache.org/jira/browse/HBASE-22801) | Maven 
build issue on Github PRs |  Major | build |
+| [HBASE-22793](https://issues.apache.org/jira/browse/HBASE-22793) | RPC 
server connection is logging user as NULL principal |  Minor | rpc |
+| [HBASE-22778](https://issues.apache.org/jira/browse/HBASE-22778) | Upgrade 
jasckson databind to 2.9.9.2 |  Blocker | dependencies |
+| [HBASE-22773](https://issues.apache.org/jira/browse/HBASE-22773) | when set 
blockSize option in Performance Evaluation tool, error occurs:ERROR: 
Unrecognized option/command: --blockSize=131072 |  Minor | mapreduce |
+| [HBASE-22735](https://issues.apache.org/jira/browse/HBASE-22735) | 
list\_regions may throw an error if a region is RIT |  Minor | shell |
+| [HBASE-22145](https://issues.apache.org/jira/browse/HBASE-22145) | windows 
hbase-env causes hbase cli/etc to ignore HBASE\_OPTS |  Major | . |
+| [HBASE-22408](https://issues.apache.org/jira/browse/HBASE-22408) | add a 
metric for regions OPEN on non-live servers |  Major | . |
+| [HBASE-22758](https://issues.apache.org/jira/browse/HBASE-22758) | Remove 
the unneccesary info cf deletion in DeleteTableProcedure#deleteFromMeta |  
Major | . |
+| [HBASE-22751](https://issues.apache.org/jira/browse/HBASE-22751) | table.jsp 
fails if ugly regions in table |  Major | UI |
+| [HBASE-22733](https://issues.apache.org/jira/browse/HBASE-22733) | 
TestSplitTransactionOnCluster.testMasterRestartAtRegionSplitPendingCatalogJanitor
 is flakey |  Major | . |
+| [HBASE-22715](https://issues.apache.org/jira/browse/HBASE-22715) | All scan 
requests should be handled by scan handler threads in RWQueueRpcExecutor |  
Minor | . |
+| [HBASE-22722](https://issues.apache.org/jira/browse/HBASE-22722) | Upgrade 
jackson databind dependencies to 2.9.9.1 |  Blocker | dependencies |
+| [HBASE-22603](https://issues.apache.org/jira/browse/HBASE-22603) | Javadoc 
Warnings related to @link tag |  Trivial | documentation |
+| [HBASE-22720](https://issues.apache.org/jira/browse/HBASE-22720) | Incorrect 
link for hbase.unittests |  Trivial | documentation |
+| [HBASE-21426](https://issues.apache.org/jira/browse/HBASE-21426) | 
TestEncryptionKeyRotation.testCFKeyRotation is flaky |  Major | . |
+| [HBASE-20368](https://issues.apache.org/jira/browse/HBASE-20368) | Fix RIT 
stuck when a rsgroup has no online servers but AM's pendingAssginQueue is 
cleared |  Major | rsgroup |
+| [HBASE-22700](https://issues.apache.org/jira/browse/HBASE-22700) | Incorrect 
timeout in recommended ZooKeeper configuration |  Minor | documentation |
+| [HBASE-22661](https://issues.apache.org/jira/browse/HBASE-22661) | 
list\_regions command in hbase shell is broken |  Major | shell |
+| [HBASE-22684](https://issues.apache.org/jira/browse/HBASE-22684) | The log 
rolling request maybe canceled immediately in LogRoller due to a race |  Major 
| wal |
+| [HBASE-22586](https://issues.apache.org/jira/browse/HBASE-22586) | Javadoc 
Warnings related to @param tag |  Trivial | documentation |
+| [HBASE-22571](https://issues.apache.org/jira/browse/HBASE-22571) | Javadoc 
Warnings related to @return tag |  Trivial | documentation |
+| [HBASE-22681](https://issues.apache.org/jira/browse/HBASE-22681) | The 
'assert highestUnsyncedTxid \< entry.getTxid();' in AbstractFWAL.append may 
fail when using AsyncFSWAL |  Critical | wal |
+| [HBASE-22686](https://issues.apache.org/jira/browse/HBASE-22686) | 
ZkSplitLogWorkerCoordination doesn't allow a regionserver to pick up all of the 
split work it is capable of |  Major | . |
+| [HBASE-22656](https://issues.apache.org/jira/browse/HBASE-22656) | [Metrics] 
 Tabe metrics 'BatchPut' and 'BatchDelete' are never updated |  Minor | metrics 
|
+| [HBASE-22582](https://issues.apache.org/jira/browse/HBASE-22582) | The 
Compaction writer may access the lastCell whose memory has been released when 
appending fileInfo in the final |  Major | Compaction |
+| [HBASE-22652](https://issues.apache.org/jira/browse/HBASE-22652) | Flakey 
TestLockManager; test timed out after 780 seconds |  Major | proc-v2 |
+| [HBASE-22637](https://issues.apache.org/jira/browse/HBASE-22637) | fix flaky 
TestMetaTableMetrics test |  Major | metrics, test |
+| [HBASE-13798](https://issues.apache.org/jira/browse/HBASE-13798) | 
TestFromClientSide\* don't close the Table |  Trivial | test |
+| [HBASE-21751](https://issues.apache.org/jira/browse/HBASE-21751) | WAL 
creation fails during region open may cause region assign forever fail |  Major 
| . |
+| [HBASE-22477](https://issues.apache.org/jira/browse/HBASE-22477) | Throwing 
exception when meta region is not in OPEN state in client registry may crash a 
master |  Major | Client, master, meta |
+| [HBASE-22169](https://issues.apache.org/jira/browse/HBASE-22169) | Open 
region failed cause memory leak |  Critical | . |
+| [HBASE-22617](https://issues.apache.org/jira/browse/HBASE-22617) | Recovered 
WAL directories not getting cleaned up |  Blocker | wal |
+| [HBASE-22605](https://issues.apache.org/jira/browse/HBASE-22605) | Ref guide 
includes dev guidance only applicable to EOM versions |  Trivial | 
documentation |
+| [HBASE-22565](https://issues.apache.org/jira/browse/HBASE-22565) | Javadoc 
Warnings: @see cannot be used in inline documentation |  Trivial | 
documentation |
+| [HBASE-22562](https://issues.apache.org/jira/browse/HBASE-22562) | 
PressureAwareThroughputController#skipControl never invoked |  Trivial | 
Operability |
+| [HBASE-22559](https://issues.apache.org/jira/browse/HBASE-22559) | [RPC] set 
guard against CALL\_QUEUE\_HANDLER\_FACTOR\_CONF\_KEY |  Minor | rpc |
+| [HBASE-22530](https://issues.apache.org/jira/browse/HBASE-22530) | The 
metrics of store files count of region are returned to clients incorrectly |  
Minor | metrics, regionserver |
+| [HBASE-22458](https://issues.apache.org/jira/browse/HBASE-22458) | 
TestClassFinder fails when run on JDK11 |  Minor | java, test |
+| [HBASE-22520](https://issues.apache.org/jira/browse/HBASE-22520) | Avoid 
possible NPE in HalfStoreFileReader seekBefore() |  Major | . |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-22886](https://issues.apache.org/jira/browse/HBASE-22886) | Code 
Coverage Improvement: Create Unit Tests for ConnectionId |  Trivial | test |
+| [HBASE-22766](https://issues.apache.org/jira/browse/HBASE-22766) | Code 
Coverage Improvement: Create Unit Tests for ResultStatsUtil |  Trivial | test |
+| [HBASE-22894](https://issues.apache.org/jira/browse/HBASE-22894) | Move 
testOpenRegionFailedMemoryLeak to dedicated class |  Major | test |
+| [HBASE-22725](https://issues.apache.org/jira/browse/HBASE-22725) | Remove 
all remaining javadoc warnings |  Trivial | test |
+| [HBASE-22615](https://issues.apache.org/jira/browse/HBASE-22615) | Make 
TestChoreService more robust to timing |  Minor | test |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-22851](https://issues.apache.org/jira/browse/HBASE-22851) | Preparing 
HBase release 2.2.1RC0: set version to 2.2.1 in branch-2.2 |  Major | . |
+| [HBASE-22878](https://issues.apache.org/jira/browse/HBASE-22878) | Show 
table throttle quotas in table jsp |  Major | . |
+| [HBASE-22946](https://issues.apache.org/jira/browse/HBASE-22946) | Fix 
TableNotFound when grant/revoke if AccessController is not loaded |  Major | . |
+| [HBASE-22945](https://issues.apache.org/jira/browse/HBASE-22945) | Show 
quota infos in master UI |  Major | master, UI |
+| [HBASE-22858](https://issues.apache.org/jira/browse/HBASE-22858) | Add HBCK 
Report to master's header.jsp |  Minor | master |
+| [HBASE-22891](https://issues.apache.org/jira/browse/HBASE-22891) | Use 
HBaseQA in HBase-PreCommit-GitHub-PR job |  Major | build, scripts |
+| [HBASE-22771](https://issues.apache.org/jira/browse/HBASE-22771) | [HBCK2] 
fixMeta method and server-side support |  Major | hbck2 |
+| [HBASE-22845](https://issues.apache.org/jira/browse/HBASE-22845) | Revert 
MetaTableAccessor#makePutFromTableState access to public |  Blocker | . |
+| [HBASE-22777](https://issues.apache.org/jira/browse/HBASE-22777) | Add a 
multi-region merge (for fixing overlaps, etc.) |  Major | hbck2, proc-v2 |
+| [HBASE-22803](https://issues.apache.org/jira/browse/HBASE-22803) | Modify 
config value range to enable turning off of the hbck chore |  Major | . |
+| [HBASE-22824](https://issues.apache.org/jira/browse/HBASE-22824) | Show 
filesystem path for the orphans regions on filesystem |  Major | . |
+| [HBASE-22808](https://issues.apache.org/jira/browse/HBASE-22808) | HBCK 
Report showed the offline regions which belong to disabled table |  Major | . |
+| [HBASE-22807](https://issues.apache.org/jira/browse/HBASE-22807) | HBCK 
Report showed wrong orphans regions on FileSystem |  Major | . |
+| [HBASE-22737](https://issues.apache.org/jira/browse/HBASE-22737) | Add a new 
admin method and shell cmd to trigger the hbck chore to run |  Major | . |
+| [HBASE-22741](https://issues.apache.org/jira/browse/HBASE-22741) | Show 
catalogjanitor consistency complaints in new 'HBCK Report' page |  Major | 
hbck2, UI |
+| [HBASE-22723](https://issues.apache.org/jira/browse/HBASE-22723) | Have 
CatalogJanitor report holes and overlaps; i.e. problems it sees when doing its 
regular scan of hbase:meta |  Major | . |
+| [HBASE-22709](https://issues.apache.org/jira/browse/HBASE-22709) | Add a 
chore thread in master to do hbck checking and display results in 'HBCK Report' 
page |  Major | . |
+| [HBASE-22742](https://issues.apache.org/jira/browse/HBASE-22742) | [HBCK2] 
Add more log for hbck operations at master side |  Minor | . |
+| [HBASE-22527](https://issues.apache.org/jira/browse/HBASE-22527) | [hbck2] 
Add a master web ui to show the problematic regions |  Major | 
hbase-operator-tools, hbck2 |
+| [HBASE-22719](https://issues.apache.org/jira/browse/HBASE-22719) | Add debug 
support for github PR pre commit job |  Major | build |
+| [HBASE-22673](https://issues.apache.org/jira/browse/HBASE-22673) | Avoid to 
expose protobuf stuff in Hbck interface |  Major | hbck2 |
+| [HBASE-7191](https://issues.apache.org/jira/browse/HBASE-7191) | HBCK - Add 
offline create/fix hbase.version and hbase.id |  Major | hbck |
+| [HBASE-22600](https://issues.apache.org/jira/browse/HBASE-22600) | Document 
that LoadIncrementalHFiles will be removed in 3.0.0 |  Major | . |
+| [HBASE-22569](https://issues.apache.org/jira/browse/HBASE-22569) | Should 
treat null consistency as Consistency.STRONG in 
ConnectionUtils.timelineConsistentRead |  Major | . |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-22833](https://issues.apache.org/jira/browse/HBASE-22833) | 
MultiRowRangeFilter should provide a method for creating a filter which is 
functionally equivalent to multiple prefix filters |  Minor | Client |
+| [HBASE-22895](https://issues.apache.org/jira/browse/HBASE-22895) | Fix the 
flakey TestSpaceQuotas |  Major | Quotas, test |
+| [HBASE-22914](https://issues.apache.org/jira/browse/HBASE-22914) | Backport 
HBASE-20662 to branch-2.2 |  Major | . |
+| [HBASE-22910](https://issues.apache.org/jira/browse/HBASE-22910) | Enable 
TestMultiVersionConcurrencyControl |  Major | test |
+| [HBASE-22913](https://issues.apache.org/jira/browse/HBASE-22913) | Use 
Hadoop label for nightly builds |  Major | build |
+| [HBASE-22911](https://issues.apache.org/jira/browse/HBASE-22911) | fewer 
concurrent github PR builds |  Critical | build |
+| [HBASE-21400](https://issues.apache.org/jira/browse/HBASE-21400) | correct 
spelling error of 'initilize' in comment |  Trivial | documentation |
+| [HBASE-22382](https://issues.apache.org/jira/browse/HBASE-22382) | Refactor 
tests in TestFromClientSide |  Major | test |
+| [HBASE-21606](https://issues.apache.org/jira/browse/HBASE-21606) | Document 
use of the meta table load metrics added in HBASE-19722 |  Critical | 
documentation, meta, metrics, Operability |
+| [HBASE-19230](https://issues.apache.org/jira/browse/HBASE-19230) | Write up 
fixVersion policy from dev discussion in refguide |  Major | documentation |
+| [HBASE-22566](https://issues.apache.org/jira/browse/HBASE-22566) | Call out 
default compaction throttling for 2.x in Book |  Major | documentation |
+| [HBASE-22560](https://issues.apache.org/jira/browse/HBASE-22560) | Upgrade 
to Jetty 9.3.latest and Jackson 2.9.latest |  Major | dependencies |
+
+
+
+## Release 2.2.0 - Unreleased (as of 2019-06-11)
+
+### INCOMPATIBLE CHANGES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-21991](https://issues.apache.org/jira/browse/HBASE-21991) | Fix 
MetaMetrics issues - [Race condition, Faulty remove logic], few improvements |  
Major | Coprocessors, metrics |
+| [HBASE-22399](https://issues.apache.org/jira/browse/HBASE-22399) | Change 
default hadoop-two.version to 2.8.x and remove the 2.7.x hadoop checks |  Major 
| build, hadoop2 |
+| [HBASE-21082](https://issues.apache.org/jira/browse/HBASE-21082) | 
Reimplement assign/unassign related procedure metrics |  Critical | amv2, 
metrics |
+| [HBASE-20587](https://issues.apache.org/jira/browse/HBASE-20587) | Replace 
Jackson with shaded thirdparty gson |  Major | dependencies |
+| [HBASE-21727](https://issues.apache.org/jira/browse/HBASE-21727) | Simplify 
documentation around client timeout |  Minor | . |
+| [HBASE-21684](https://issues.apache.org/jira/browse/HBASE-21684) | Throw 
DNRIOE when connection or rpc client is closed |  Major | asyncclient, Client |
+| [HBASE-21792](https://issues.apache.org/jira/browse/HBASE-21792) | Mark 
HTableMultiplexer as deprecated and remove it in 3.0.0 |  Major | Client |
+| [HBASE-21657](https://issues.apache.org/jira/browse/HBASE-21657) | 
PrivateCellUtil#estimatedSerializedSizeOf has been the bottleneck in 100% scan 
case. |  Major | Performance |
+| [HBASE-21560](https://issues.apache.org/jira/browse/HBASE-21560) | Return a 
new TableDescriptor for MasterObserver#preModifyTable to allow coprocessor 
modify the TableDescriptor |  Major | Coprocessors |
+| [HBASE-21492](https://issues.apache.org/jira/browse/HBASE-21492) | CellCodec 
Written To WAL Before It's Verified |  Critical | wal |
+| [HBASE-21452](https://issues.apache.org/jira/browse/HBASE-21452) | Illegal 
character in hbase counters group name |  Major | spark |
+| [HBASE-21158](https://issues.apache.org/jira/browse/HBASE-21158) | Empty 
qualifier cell should not be returned if it does not match QualifierFilter |  
Critical | Filters |
+| [HBASE-21223](https://issues.apache.org/jira/browse/HBASE-21223) | [amv2] 
Remove abort\_procedure from shell |  Critical | amv2, hbck2, shell |
+| [HBASE-20881](https://issues.apache.org/jira/browse/HBASE-20881) | Introduce 
a region transition procedure to handle all the state transition for a region | 
 Major | amv2, proc-v2 |
+| [HBASE-20884](https://issues.apache.org/jira/browse/HBASE-20884) | Replace 
usage of our Base64 implementation with java.util.Base64 |  Major | . |
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-22148](https://issues.apache.org/jira/browse/HBASE-22148) | Provide 
an alternative to CellUtil.setTimestamp |  Blocker | API, Coprocessors |
+| [HBASE-21815](https://issues.apache.org/jira/browse/HBASE-21815) | Make 
isTrackingMetrics and getMetrics of ScannerContext public |  Minor | . |
+| [HBASE-21926](https://issues.apache.org/jira/browse/HBASE-21926) | Profiler 
servlet |  Major | master, Operability, regionserver |
+| [HBASE-20886](https://issues.apache.org/jira/browse/HBASE-20886) | [Auth] 
Support keytab login in hbase client |  Critical | asyncclient, Client, 
security |
+| [HBASE-17942](https://issues.apache.org/jira/browse/HBASE-17942) | Disable 
region splits and merges per table |  Major | . |
+| [HBASE-21753](https://issues.apache.org/jira/browse/HBASE-21753) | Support 
getting the locations for all the replicas of a region |  Major | Client |
+| [HBASE-20636](https://issues.apache.org/jira/browse/HBASE-20636) | Introduce 
two bloom filter type : ROWPREFIX\_FIXED\_LENGTH and ROWPREFIX\_DELIMITED |  
Major | HFile, regionserver, Scanners |
+| [HBASE-20649](https://issues.apache.org/jira/browse/HBASE-20649) | Validate 
HFiles do not have PREFIX\_TREE DataBlockEncoding |  Minor | Operability, 
tooling |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-22284](https://issues.apache.org/jira/browse/HBASE-22284) | 
optimization StringBuilder.append of AbstractMemStore.toString |  Trivial | . |
+| [HBASE-22523](https://issues.apache.org/jira/browse/HBASE-22523) | Refactor 
RegionStates#getAssignmentsByTable to make it easy to understand |  Major | . |
+| [HBASE-22511](https://issues.apache.org/jira/browse/HBASE-22511) | More 
missing /rs-status links |  Minor | UI |
+| [HBASE-22496](https://issues.apache.org/jira/browse/HBASE-22496) | 
UnsafeAccess.unsafeCopy should not copy more than UNSAFE\_COPY\_THRESHOLD on 
each iteration |  Major | . |
+| [HBASE-22488](https://issues.apache.org/jira/browse/HBASE-22488) | Cleanup 
the explicit timeout value for test methods |  Major | . |
+| [HBASE-22411](https://issues.apache.org/jira/browse/HBASE-22411) | Refactor 
codes of moving reigons in RSGroup |  Major | rsgroup |
+| [HBASE-22467](https://issues.apache.org/jira/browse/HBASE-22467) | WebUI 
changes to enable Apache Knox UI proxying |  Major | UI |
+| [HBASE-22474](https://issues.apache.org/jira/browse/HBASE-22474) | Add 
--mvn-custom-repo parameter to yetus calls |  Minor | . |
+| [HBASE-20305](https://issues.apache.org/jira/browse/HBASE-20305) | Add 
option to SyncTable that skip deletes on target cluster |  Minor | mapreduce |
+| [HBASE-21784](https://issues.apache.org/jira/browse/HBASE-21784) | Dump 
replication queue should show list of wal files ordered chronologically |  
Major | Replication, tooling |
+| [HBASE-22384](https://issues.apache.org/jira/browse/HBASE-22384) | 
Formatting issues in administration section of book |  Minor | community, 
documentation |
+| [HBASE-21658](https://issues.apache.org/jira/browse/HBASE-21658) | Should 
get the meta replica number from zk instead of config at client side |  
Critical | Client |
+| [HBASE-22365](https://issues.apache.org/jira/browse/HBASE-22365) | Region 
may be opened on two RegionServers |  Blocker | amv2 |
+| [HBASE-22392](https://issues.apache.org/jira/browse/HBASE-22392) | Remove 
extra/useless + |  Trivial | . |
+| [HBASE-20494](https://issues.apache.org/jira/browse/HBASE-20494) | Upgrade 
com.yammer.metrics dependency |  Major | dependencies |
+| [HBASE-22358](https://issues.apache.org/jira/browse/HBASE-22358) | Change 
rubocop configuration for method length |  Minor | community, shell |
+| [HBASE-22379](https://issues.apache.org/jira/browse/HBASE-22379) | Fix 
Markdown for "Voting on Release Candidates" in book |  Minor | community, 
documentation |
+| [HBASE-22109](https://issues.apache.org/jira/browse/HBASE-22109) | Update 
hbase shaded content checker after guava update in hadoop branch-3.0 to 
27.0-jre |  Minor | . |
+| [HBASE-22087](https://issues.apache.org/jira/browse/HBASE-22087) | Update 
LICENSE/shading for the dependencies from the latest Hadoop trunk |  Minor | 
hadoop3 |
+| [HBASE-22341](https://issues.apache.org/jira/browse/HBASE-22341) | Add 
explicit guidelines for removing deprecations in book |  Major | API, 
community, documentation |
+| [HBASE-22225](https://issues.apache.org/jira/browse/HBASE-22225) | Profiler 
tab on Master/RS UI not working w/o comprehensive message |  Minor | UI |
+| [HBASE-22291](https://issues.apache.org/jira/browse/HBASE-22291) | Fix 
recovery of recovered.edits files under root dir |  Major | . |
+| [HBASE-22283](https://issues.apache.org/jira/browse/HBASE-22283) | Print row 
and table information when failed to get region location |  Major | Client, 
logging |
+| [HBASE-22296](https://issues.apache.org/jira/browse/HBASE-22296) | Remove 
TestFromClientSide.testGetStartEndKeysWithRegionReplicas |  Major | test |
+| [HBASE-22250](https://issues.apache.org/jira/browse/HBASE-22250) | The same 
constants used in many places should be placed in constant classes |  Minor | 
Client, conf, regionserver |
+| [HBASE-20586](https://issues.apache.org/jira/browse/HBASE-20586) | SyncTable 
tool: Add support for cross-realm remote clusters |  Major | mapreduce, 
Operability, Replication |
+| [HBASE-21257](https://issues.apache.org/jira/browse/HBASE-21257) | 
misspelled words.[occured -\> occurred] |  Trivial | . |
+| [HBASE-22193](https://issues.apache.org/jira/browse/HBASE-22193) | Add 
backoff when region failed open too many times |  Major | . |
+| [HBASE-22188](https://issues.apache.org/jira/browse/HBASE-22188) | Make 
TestSplitMerge more stable |  Major | test |
+| [HBASE-22097](https://issues.apache.org/jira/browse/HBASE-22097) | Modify 
the description of split command in shell |  Trivial | shell |
+| [HBASE-21964](https://issues.apache.org/jira/browse/HBASE-21964) | unset 
Quota by Throttle Type |  Major | master |
+| [HBASE-22093](https://issues.apache.org/jira/browse/HBASE-22093) | Combine 
TestRestoreSnapshotFromClientWithRegionReplicas to 
CloneSnapshotFromClientAfterSplittingRegionTestBase#testCloneSnapshotAfterSplittingRegion
 |  Major | . |
+| [HBASE-22009](https://issues.apache.org/jira/browse/HBASE-22009) | Improve 
RSGroupInfoManagerImpl#getDefaultServers() |  Minor | rsgroup |
+| [HBASE-22032](https://issues.apache.org/jira/browse/HBASE-22032) | KeyValue 
validation should check for null byte array |  Major | . |
+| [HBASE-21667](https://issues.apache.org/jira/browse/HBASE-21667) | Move to 
latest ASF Parent POM |  Minor | build |
+| [HBASE-21810](https://issues.apache.org/jira/browse/HBASE-21810) | bulkload  
support set hfile compression on client |  Major | mapreduce |
+| [HBASE-21987](https://issues.apache.org/jira/browse/HBASE-21987) | Simplify 
RSGroupInfoManagerImpl#flushConfig() for offline mode |  Minor | rsgroup |
+| [HBASE-21871](https://issues.apache.org/jira/browse/HBASE-21871) | Support 
to specify a peer table name in VerifyReplication tool |  Major | . |
+| [HBASE-21255](https://issues.apache.org/jira/browse/HBASE-21255) | [acl] 
Refactor TablePermission into three classes (Global, Namespace, Table) |  Major 
| . |
+| [HBASE-21410](https://issues.apache.org/jira/browse/HBASE-21410) | A helper 
page that help find all problematic regions and procedures |  Major | . |
+| [HBASE-20734](https://issues.apache.org/jira/browse/HBASE-20734) | Colocate 
recovered edits directory with hbase.wal.dir |  Major | MTTR, Recovery, wal |
+| [HBASE-20401](https://issues.apache.org/jira/browse/HBASE-20401) | Make 
\`MAX\_WAIT\` and \`waitIfNotFinished\` in CleanerContext configurable |  Minor 
| master |
+| [HBASE-21481](https://issues.apache.org/jira/browse/HBASE-21481) | [acl] 
Superuser's permissions should not be granted or revoked by any non-su global 
admin |  Major | . |
+| [HBASE-21967](https://issues.apache.org/jira/browse/HBASE-21967) | Split 
TestServerCrashProcedure and TestServerCrashProcedureWithReplicas |  Major | . |
+| [HBASE-21867](https://issues.apache.org/jira/browse/HBASE-21867) | Support 
multi-threads in HFileArchiver |  Major | . |
+| [HBASE-21932](https://issues.apache.org/jira/browse/HBASE-21932) | Use 
Runtime.getRuntime().halt to terminate regionserver when abort timeout |  Major 
| . |
+| [HBASE-21875](https://issues.apache.org/jira/browse/HBASE-21875) | Change 
the retry logic in RSProcedureDispatcher to 'retry by default, only if xxx' |  
Major | proc-v2 |
+| [HBASE-21780](https://issues.apache.org/jira/browse/HBASE-21780) | Avoid a 
wide line on the RegionServer webUI for many ZooKeeper servers |  Minor | UI, 
Usability |
+| [HBASE-21636](https://issues.apache.org/jira/browse/HBASE-21636) | Enhance 
the shell scan command to support missing scanner specifications like ReadType, 
IsolationLevel etc. |  Major | shell |
+| [HBASE-21857](https://issues.apache.org/jira/browse/HBASE-21857) | Do not 
need to check clusterKey if replicationEndpoint is provided when adding a peer 
|  Major | . |
+| [HBASE-21201](https://issues.apache.org/jira/browse/HBASE-21201) | Support 
to run VerifyReplication MR tool without peerid |  Major | hbase-operator-tools 
|
+| [HBASE-21816](https://issues.apache.org/jira/browse/HBASE-21816) | Print 
source cluster replication config directory |  Trivial | Replication |
+| [HBASE-19616](https://issues.apache.org/jira/browse/HBASE-19616) | Review of 
LogCleaner Class |  Minor | . |
+| [HBASE-21830](https://issues.apache.org/jira/browse/HBASE-21830) | Backport 
HBASE-20577 (Make Log Level page design consistent with the design of other 
pages in UI) to branch-2 |  Major | UI, Usability |
+| [HBASE-21833](https://issues.apache.org/jira/browse/HBASE-21833) | Use 
NettyAsyncFSWALConfigHelper.setEventLoopConfig to prevent creating too many 
netty event loop when executing TestHRegion |  Minor | test |
+| [HBASE-21634](https://issues.apache.org/jira/browse/HBASE-21634) | Print 
error message when user uses unacceptable values for LIMIT while setting 
quotas. |  Minor | . |
+| [HBASE-21789](https://issues.apache.org/jira/browse/HBASE-21789) | Rewrite 
MetaTableAccessor.multiMutate with Table.coprocessorService |  Major | Client, 
Coprocessors |
+| [HBASE-21689](https://issues.apache.org/jira/browse/HBASE-21689) | Make 
table/namespace specific current quota info available in 
shell(describe\_namespace & describe) |  Minor | . |
+| [HBASE-20215](https://issues.apache.org/jira/browse/HBASE-20215) | Rename 
CollectionUtils to ConcurrentMapUtils |  Trivial | . |
+| [HBASE-21720](https://issues.apache.org/jira/browse/HBASE-21720) | metric to 
measure how actions are distributed to servers within a MultiAction |  Minor | 
Client, metrics, monitoring |
+| [HBASE-21595](https://issues.apache.org/jira/browse/HBASE-21595) | Print 
thread's information and stack traces when RS is aborting forcibly |  Minor | 
regionserver |
+| [HBASE-20209](https://issues.apache.org/jira/browse/HBASE-20209) | Do Not 
Use Both Map containsKey and get Methods in Replication Sink |  Trivial | 
Replication |
+| [HBASE-21712](https://issues.apache.org/jira/browse/HBASE-21712) | Make 
submit-patch.py python3 compatible |  Minor | tooling |
+| [HBASE-21590](https://issues.apache.org/jira/browse/HBASE-21590) | Optimize 
trySkipToNextColumn in StoreScanner a bit |  Critical | Performance, Scanners |
+| [HBASE-21297](https://issues.apache.org/jira/browse/HBASE-21297) | 
ModifyTableProcedure can throw TNDE instead of IOE in case of 
REGION\_REPLICATION change |  Minor | . |
+| [HBASE-21700](https://issues.apache.org/jira/browse/HBASE-21700) | Simplify 
the implementation of RSGroupInfoManagerImpl |  Major | rsgroup |
+| [HBASE-21694](https://issues.apache.org/jira/browse/HBASE-21694) | Add 
append\_peer\_exclude\_tableCFs and remove\_peer\_exclude\_tableCFs shell 
commands |  Major | . |
+| [HBASE-21645](https://issues.apache.org/jira/browse/HBASE-21645) | Perform 
sanity check and disallow table creation/modification with region replication 
\< 1 |  Minor | . |
+| [HBASE-21360](https://issues.apache.org/jira/browse/HBASE-21360) | Disable 
printing of stack-trace in shell for quotas |  Minor | shell |
+| [HBASE-21662](https://issues.apache.org/jira/browse/HBASE-21662) | Add 
append\_peer\_exclude\_namespaces and remove\_peer\_exclude\_namespaces shell 
commands |  Major | . |
+| [HBASE-21659](https://issues.apache.org/jira/browse/HBASE-21659) | Avoid to 
load duplicate coprocessors in system config and table descriptor |  Minor | . |
+| [HBASE-21642](https://issues.apache.org/jira/browse/HBASE-21642) | CopyTable 
by reading snapshot and bulkloading will save a lot of time. |  Major | . |
+| [HBASE-21643](https://issues.apache.org/jira/browse/HBASE-21643) | Introduce 
two new region coprocessor method and deprecated postMutationBeforeWAL |  Major 
| . |
+| [HBASE-21640](https://issues.apache.org/jira/browse/HBASE-21640) | Remove 
the TODO when increment zero |  Major | . |
+| [HBASE-21631](https://issues.apache.org/jira/browse/HBASE-21631) | 
list\_quotas should print human readable values for LIMIT |  Minor | shell |
+| [HBASE-21635](https://issues.apache.org/jira/browse/HBASE-21635) | Use maven 
enforcer to ban imports from illegal packages |  Major | build |
+| [HBASE-21514](https://issues.apache.org/jira/browse/HBASE-21514) | Refactor 
CacheConfig |  Major | . |
+| [HBASE-21520](https://issues.apache.org/jira/browse/HBASE-21520) | 
TestMultiColumnScanner cost long time when using ROWCOL bloom type |  Major | 
test |
+| [HBASE-21554](https://issues.apache.org/jira/browse/HBASE-21554) | Show 
replication endpoint classname for replication peer on master web UI |  Minor | 
UI |
+| [HBASE-21549](https://issues.apache.org/jira/browse/HBASE-21549) | Add shell 
command for serial replication peer |  Major | . |
+| [HBASE-21283](https://issues.apache.org/jira/browse/HBASE-21283) | Add new 
shell command 'rit' for listing regions in transition |  Minor | Operability, 
shell |
+| [HBASE-21567](https://issues.apache.org/jira/browse/HBASE-21567) | Allow 
overriding configs starting up the shell |  Major | shell |
+| [HBASE-21413](https://issues.apache.org/jira/browse/HBASE-21413) | Empty 
meta log doesn't get split when restart whole cluster |  Major | . |
+| [HBASE-21524](https://issues.apache.org/jira/browse/HBASE-21524) | 
Unnecessary DEBUG log in ConnectionImplementation#isTableEnabled |  Major | 
Client |
+| [HBASE-21511](https://issues.apache.org/jira/browse/HBASE-21511) | Remove in 
progress snapshot check in SnapshotFileCache#getUnreferencedFiles |  Minor | 
snapshots |
+| [HBASE-21480](https://issues.apache.org/jira/browse/HBASE-21480) | Taking 
snapshot when RS crashes prevent we bring the regions online |  Major | 
snapshots |
+| [HBASE-21485](https://issues.apache.org/jira/browse/HBASE-21485) | Add more 
debug logs for remote procedure execution |  Major | proc-v2 |
+| [HBASE-21328](https://issues.apache.org/jira/browse/HBASE-21328) | add 
HBASE\_DISABLE\_HADOOP\_CLASSPATH\_LOOKUP switch to hbase-env.sh |  Minor | 
documentation, Operability |
+| [HBASE-19682](https://issues.apache.org/jira/browse/HBASE-19682) | Use 
Collections.emptyList() For Empty List Values |  Minor | . |
+| [HBASE-21388](https://issues.apache.org/jira/browse/HBASE-21388) | No need 
to instantiate MemStoreLAB for master which not carry table |  Major | . |
+| [HBASE-21325](https://issues.apache.org/jira/browse/HBASE-21325) | Force to 
terminate regionserver when abort hang in somewhere |  Major | . |
+| [HBASE-21385](https://issues.apache.org/jira/browse/HBASE-21385) | 
HTable.delete request use rpc call directly instead of AsyncProcess |  Major | 
. |
+| [HBASE-21318](https://issues.apache.org/jira/browse/HBASE-21318) | Make 
RefreshHFilesClient runnable |  Minor | HFile |
+| [HBASE-21263](https://issues.apache.org/jira/browse/HBASE-21263) | Mention 
compression algorithm along with other storefile details |  Minor | . |
+| [HBASE-21290](https://issues.apache.org/jira/browse/HBASE-21290) | No need 
to instantiate BlockCache for master which not carry table |  Major | . |
+| [HBASE-21256](https://issues.apache.org/jira/browse/HBASE-21256) | Improve 
IntegrationTestBigLinkedList for testing huge data |  Major | integration tests 
|
+| [HBASE-21251](https://issues.apache.org/jira/browse/HBASE-21251) | Refactor 
RegionMover |  Major | Operability |
+| [HBASE-21303](https://issues.apache.org/jira/browse/HBASE-21303) | [shell] 
clear\_deadservers with no args fails |  Major | . |
+| [HBASE-21098](https://issues.apache.org/jira/browse/HBASE-21098) | Improve 
Snapshot Performance with Temporary Snapshot Directory when rootDir on S3 |  
Major | . |
+| [HBASE-21299](https://issues.apache.org/jira/browse/HBASE-21299) | List 
counts of actual region states in master UI tables section |  Major | UI |
+| [HBASE-21289](https://issues.apache.org/jira/browse/HBASE-21289) | Remove 
the log "'hbase.regionserver.maxlogs' was deprecated." in AbstractFSWAL |  
Minor | . |
+| [HBASE-21185](https://issues.apache.org/jira/browse/HBASE-21185) | 
WALPrettyPrinter: Additional useful info to be printed by wal printer tool, for 
debugability purposes |  Minor | Operability |
+| [HBASE-21103](https://issues.apache.org/jira/browse/HBASE-21103) | nightly 
test cache of yetus install needs to be more thorough in verification |  Major 
| test |
+| [HBASE-21207](https://issues.apache.org/jira/browse/HBASE-21207) | Add 
client side sorting functionality in master web UI for table and region server 
details. |  Minor | master, monitoring, UI, Usability |
+| [HBASE-20857](https://issues.apache.org/jira/browse/HBASE-20857) | JMX - add 
Balancer status = enabled / disabled |  Major | API, master, metrics, REST, 
tooling, Usability |
+| [HBASE-21164](https://issues.apache.org/jira/browse/HBASE-21164) | 
reportForDuty to spew less log if master is initializing |  Minor | 
regionserver |
+| [HBASE-21204](https://issues.apache.org/jira/browse/HBASE-21204) | NPE when 
scan raw DELETE\_FAMILY\_VERSION and codec is not set |  Major | . |
+| [HBASE-20307](https://issues.apache.org/jira/browse/HBASE-20307) | 
LoadTestTool prints too much zookeeper logging |  Minor | tooling |
+| [HBASE-21155](https://issues.apache.org/jira/browse/HBASE-21155) | Save on a 
few log strings and some churn in wal splitter by skipping out early if no logs 
in dir |  Trivial | . |
+| [HBASE-21129](https://issues.apache.org/jira/browse/HBASE-21129) | Clean up 
duplicate codes in #equals and #hashCode methods of Filter |  Minor | Filters |
+| [HBASE-21157](https://issues.apache.org/jira/browse/HBASE-21157) | Split 
TableInputFormatScan to individual tests |  Minor | test |
+| [HBASE-21107](https://issues.apache.org/jira/browse/HBASE-21107) | add a 
metrics for netty direct memory |  Minor | IPC/RPC |
+| [HBASE-21153](https://issues.apache.org/jira/browse/HBASE-21153) | Shaded 
client jars should always build in relevant phase to avoid confusion |  Major | 
build |
+| [HBASE-21126](https://issues.apache.org/jira/browse/HBASE-21126) | Add 
ability for HBase Canary to ignore a configurable number of ZooKeeper down 
nodes |  Minor | canary, Zookeeper |
+| [HBASE-20749](https://issues.apache.org/jira/browse/HBASE-20749) | Upgrade 
our use of checkstyle to 8.6+ |  Minor | build, community |
+| [HBASE-21071](https://issues.apache.org/jira/browse/HBASE-21071) | 
HBaseTestingUtility::startMiniCluster() to use builder pattern |  Major | test |
+| [HBASE-20387](https://issues.apache.org/jira/browse/HBASE-20387) | flaky 
infrastructure should work for all branches |  Critical | test |
+| [HBASE-20469](https://issues.apache.org/jira/browse/HBASE-20469) | Directory 
used for sidelining old recovered edits files should be made configurable |  
Minor | . |
+| [HBASE-20979](https://issues.apache.org/jira/browse/HBASE-20979) | Flaky 
test reporting should specify what JSON it needs and handle HTTP errors |  
Minor | test |
+| [HBASE-20985](https://issues.apache.org/jira/browse/HBASE-20985) | add two 
attributes when we do normalization |  Major | . |
+| [HBASE-20965](https://issues.apache.org/jira/browse/HBASE-20965) | Separate 
region server report requests to new handlers |  Major | Performance |
+| [HBASE-20845](https://issues.apache.org/jira/browse/HBASE-20845) | Support 
set the consistency for Gets and Scans in thrift2 |  Major | Thrift |
+| [HBASE-20986](https://issues.apache.org/jira/browse/HBASE-20986) | Separate 
the config of block size when we do log splitting and write Hlog |  Major | . |
+| [HBASE-19036](https://issues.apache.org/jira/browse/HBASE-19036) | Add 
action in Chaos Monkey to restart Active Namenode |  Minor | . |
+| [HBASE-20856](https://issues.apache.org/jira/browse/HBASE-20856) | PITA 
having to set WAL provider in two places |  Minor | Operability, wal |
+| [HBASE-20935](https://issues.apache.org/jira/browse/HBASE-20935) | 
HStore.removeCompactedFiles should log in case it is unable to delete a file |  
Minor | . |
+| [HBASE-20873](https://issues.apache.org/jira/browse/HBASE-20873) | Update 
doc for Endpoint-based Export |  Minor | documentation |
+| [HBASE-20672](https://issues.apache.org/jira/browse/HBASE-20672) | New 
metrics ReadRequestRate and WriteRequestRate |  Minor | metrics |
+| [HBASE-20617](https://issues.apache.org/jira/browse/HBASE-20617) | 
Upgrade/remove jetty-jsp |  Minor | . |
+| [HBASE-20396](https://issues.apache.org/jira/browse/HBASE-20396) | Remove 
redundant MBean from thrift JMX |  Major | Thrift |
+| [HBASE-20357](https://issues.apache.org/jira/browse/HBASE-20357) | 
AccessControlClient API Enhancement |  Major | security |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-22563](https://issues.apache.org/jira/browse/HBASE-22563) | Reduce 
retained jobs for Jenkins pipelines |  Major | . |
+| [HBASE-22552](https://issues.apache.org/jira/browse/HBASE-22552) | Rewrite 
TestEndToEndSplitTransaction.testCanSplitJustAfterASplit |  Major | test |
+| [HBASE-22551](https://issues.apache.org/jira/browse/HBASE-22551) | 
TestMasterOperationsForRegionReplicas is flakey |  Major | read replicas, test |
+| [HBASE-22481](https://issues.apache.org/jira/browse/HBASE-22481) | Javadoc 
Warnings: reference not found |  Trivial | documentation |
+| [HBASE-22546](https://issues.apache.org/jira/browse/HBASE-22546) | 
TestRegionServerHostname#testRegionServerHostname fails reliably for me |  
Major | . |
+| [HBASE-22534](https://issues.apache.org/jira/browse/HBASE-22534) | 
TestCellUtil fails when run on JDK11 |  Minor | java, test |
+| [HBASE-22536](https://issues.apache.org/jira/browse/HBASE-22536) | 
TestForeignExceptionSerialization fails when run on JDK11 |  Minor | java |
+| [HBASE-22535](https://issues.apache.org/jira/browse/HBASE-22535) | 
TestShellRSGroups fails when run on JDK11 |  Minor | java, shell |
+| [HBASE-22518](https://issues.apache.org/jira/browse/HBASE-22518) | yetus 
personality is treating branch-1.4 like earlier branches for hadoopcheck |  
Major | test |
+| [HBASE-22513](https://issues.apache.org/jira/browse/HBASE-22513) | 
Admin#getQuota does not work correctly if exceedThrottleQuota is set |  Major | 
Quotas |
+| [HBASE-22522](https://issues.apache.org/jira/browse/HBASE-22522) | The 
integration test in master branch's nightly job has error "ERROR: Only found 
1050 rows." |  Major | . |
+| [HBASE-22490](https://issues.apache.org/jira/browse/HBASE-22490) | Nightly 
client integration test fails with hadoop-3 |  Major | build |
+| [HBASE-22502](https://issues.apache.org/jira/browse/HBASE-22502) | Purge the 
logs when we reach the EOF for the last wal file when replication |  Major | . |
+| [HBASE-22503](https://issues.apache.org/jira/browse/HBASE-22503) | Failed to 
upgrade to 2.2+ as the global permission which storaged in zk is not right |  
Blocker | . |
+| [HBASE-22487](https://issues.apache.org/jira/browse/HBASE-22487) | 
getMostLoadedRegions is unused |  Trivial | regionserver |
+| [HBASE-22485](https://issues.apache.org/jira/browse/HBASE-22485) | Fix 
failed ut TestClusterRestartFailover |  Major | . |
+| [HBASE-22486](https://issues.apache.org/jira/browse/HBASE-22486) | Fix flaky 
test TestLockManager |  Major | . |
+| [HBASE-22471](https://issues.apache.org/jira/browse/HBASE-22471) | Our 
nightly jobs for master and branch-2 are still using hadoop-2.7.1 in 
integration test |  Major | build |
+| [HBASE-22003](https://issues.apache.org/jira/browse/HBASE-22003) | Fix flaky 
test TestVerifyReplication.testHBase14905 |  Major | . |
+| [HBASE-22441](https://issues.apache.org/jira/browse/HBASE-22441) | 
BucketCache NullPointerException in cacheBlock |  Major | BucketCache |
+| [HBASE-22473](https://issues.apache.org/jira/browse/HBASE-22473) | Split 
TestSCP |  Major | Recovery, test |
+| [HBASE-22456](https://issues.apache.org/jira/browse/HBASE-22456) | Polish 
TestSplitTransitionOnCluster |  Major | test |
+| [HBASE-21800](https://issues.apache.org/jira/browse/HBASE-21800) | 
RegionServer aborted due to NPE from MetaTableMetrics coprocessor |  Critical | 
Coprocessors, meta, metrics, Operability |
+| [HBASE-22462](https://issues.apache.org/jira/browse/HBASE-22462) | Should 
run a 'mvn install' at the end of hadoop check in pre commit job |  Major | 
build |
+| [HBASE-22440](https://issues.apache.org/jira/browse/HBASE-22440) | 
HRegionServer#getWalGroupsReplicationStatus() throws NPE |  Major | 
regionserver, Replication |
+| [HBASE-22226](https://issues.apache.org/jira/browse/HBASE-22226) | Incorrect 
level for headings in asciidoc |  Trivial | documentation |
+| [HBASE-22442](https://issues.apache.org/jira/browse/HBASE-22442) | Nightly 
build is failing with hadoop 3.x |  Major | build, hadoop3 |
+| [HBASE-20970](https://issues.apache.org/jira/browse/HBASE-20970) | Update 
hadoop check versions for hadoop3 in hbase-personality |  Major | build |
+| [HBASE-22424](https://issues.apache.org/jira/browse/HBASE-22424) | 
Interactions in RSGroup test classes will cause 
TestRSGroupsAdmin2.testMoveServersAndTables and 
TestRSGroupsBalance.testGroupBalance flaky |  Major | rsgroup |
+| [HBASE-22404](https://issues.apache.org/jira/browse/HBASE-22404) | 
Open/Close region request may be executed twice when master restart |  Major | 
. |
+| [HBASE-22274](https://issues.apache.org/jira/browse/HBASE-22274) | Cell size 
limit check on append should consider cell's previous size. |  Minor | . |
+| [HBASE-22072](https://issues.apache.org/jira/browse/HBASE-22072) | High 
read/write intensive regions may cause long crash recovery |  Major | 
Performance, Recovery |
+| [HBASE-22324](https://issues.apache.org/jira/browse/HBASE-22324) |  loss a 
mass of data when the sequenceId of cells greater than Integer.Max, because 
MemStoreMergerSegmentsIterator can not merge segments |  Blocker | 
in-memory-compaction |
+| [HBASE-21777](https://issues.apache.org/jira/browse/HBASE-21777) | "Tune 
compaction throughput" debug messages even when nothing has changed |  Trivial 
| Compaction |
+| [HBASE-22360](https://issues.apache.org/jira/browse/HBASE-22360) | Abort 
timer doesn't set when abort is called during graceful shutdown process |  
Major | regionserver |
+| [HBASE-20851](https://issues.apache.org/jira/browse/HBASE-20851) | Change 
rubocop config for max line length of 100 |  Minor | community, shell |
+| [HBASE-21467](https://issues.apache.org/jira/browse/HBASE-21467) | Fix flaky 
test TestCoprocessorClassLoader.testCleanupOldJars |  Minor | . |
+| [HBASE-22312](https://issues.apache.org/jira/browse/HBASE-22312) | Hadoop 3 
profile for hbase-shaded-mapreduce should like mapreduce as a provided 
dependency |  Major | mapreduce, shading |
+| [HBASE-22314](https://issues.apache.org/jira/browse/HBASE-22314) | shaded 
byo-hadoop client should list needed hadoop modules as provided scope to avoid 
inclusion of unnecessary transitive depednencies |  Major | hadoop2, hadoop3, 
shading |
+| [HBASE-22047](https://issues.apache.org/jira/browse/HBASE-22047) | 
LeaseException in Scan should be retired |  Major | Client, Scanners |
+| [HBASE-22343](https://issues.apache.org/jira/browse/HBASE-22343) | Make 
procedure retry interval configurable in test |  Major | amv2, test |
+| [HBASE-22190](https://issues.apache.org/jira/browse/HBASE-22190) | 
SnapshotFileCache may fail to load the correct snapshot file list when there is 
an on-going snapshot operation |  Blocker | snapshots |
+| [HBASE-22354](https://issues.apache.org/jira/browse/HBASE-22354) | master 
never sets abortRequested, and thus abort timeout doesn't work for it |  Major 
| . |
+| [HBASE-22350](https://issues.apache.org/jira/browse/HBASE-22350) | Rewrite 
TestClientOperationTimeout so we do not timeout when creating table |  Major | 
test |
+| [HBASE-22340](https://issues.apache.org/jira/browse/HBASE-22340) | Corrupt 
KeyValue is silently ignored |  Critical | wal |
+| [HBASE-22054](https://issues.apache.org/jira/browse/HBASE-22054) | Space 
Quota: Compaction is not working for super user in case of 
NO\_WRITES\_COMPACTIONS |  Minor | . |
+| [HBASE-22236](https://issues.apache.org/jira/browse/HBASE-22236) | 
AsyncNonMetaRegionLocator should not cache HRegionLocation with null location | 
 Major | asyncclient |
+| [HBASE-22086](https://issues.apache.org/jira/browse/HBASE-22086) | space 
quota issue: deleting snapshot doesn't update the usage of table |  Minor | . |
+| [HBASE-22298](https://issues.apache.org/jira/browse/HBASE-22298) | 
branch-2.2 nightly fails "[ForOverride] Method annotated @ForOverride must have 
protected or package-private visibility" |  Major | . |
+| [HBASE-22292](https://issues.apache.org/jira/browse/HBASE-22292) | 
PreemptiveFastFailInterceptor clean repeatedFailuresMap issue |  Blocker | . |
+| [HBASE-22230](https://issues.apache.org/jira/browse/HBASE-22230) | REST 
Server drops connection on long scans |  Major | . |
+| [HBASE-22200](https://issues.apache.org/jira/browse/HBASE-22200) | 
WALSplitter.hasRecoveredEdits should use same FS instance from WAL region dir | 
 Major | wal |
+| [HBASE-22286](https://issues.apache.org/jira/browse/HBASE-22286) | License 
handling incorrectly lists CDDL/GPLv2+CE as safe to not aggregate |  Critical | 
build, community |
+| [HBASE-22282](https://issues.apache.org/jira/browse/HBASE-22282) | Should 
deal with error in the callback of RawAsyncHBaseAdmin.splitRegion methods |  
Major | Admin, asyncclient |
+| [HBASE-22278](https://issues.apache.org/jira/browse/HBASE-22278) | 
RawAsyncHBaseAdmin should not use cached region location |  Major | Admin, 
asyncclient |
+| [HBASE-22222](https://issues.apache.org/jira/browse/HBASE-22222) | Site 
build fails after hbase-thirdparty upgrade |  Blocker | website |
+| [HBASE-22249](https://issues.apache.org/jira/browse/HBASE-22249) | Rest 
Server throws NoClassDefFoundError with Java 11 (run-time) |  Major | . |
+| [HBASE-22235](https://issues.apache.org/jira/browse/HBASE-22235) | 
OperationStatus.{SUCCESS\|FAILURE\|NOT\_RUN} are not visible to 3rd party 
coprocessors |  Major | Coprocessors |
+| [HBASE-22207](https://issues.apache.org/jira/browse/HBASE-22207) | Fix 
flakey TestAssignmentManager.testAssignSocketTimeout |  Major | test |
+| [HBASE-22202](https://issues.apache.org/jira/browse/HBASE-22202) | Fix new 
findbugs issues after we upgrade hbase-thirdparty dependencies |  Major | 
findbugs |
+| [HBASE-22144](https://issues.apache.org/jira/browse/HBASE-22144) | 
MultiRowRangeFilter does not work with reversed scans |  Critical | Filters, 
Scanners |
+| [HBASE-22198](https://issues.apache.org/jira/browse/HBASE-22198) | Fix 
flakey TestAsyncTableGetMultiThreaded |  Major | test |
+| [HBASE-22185](https://issues.apache.org/jira/browse/HBASE-22185) | 
RAMQueueEntry#writeToCache should freeBlock if any exception encountered 
instead of the IOException catch block |  Major | . |
+| [HBASE-22163](https://issues.apache.org/jira/browse/HBASE-22163) | Should 
not archive the compacted store files when region warmup |  Blocker | . |
+| [HBASE-22178](https://issues.apache.org/jira/browse/HBASE-22178) | Introduce 
a createTableAsync with TableDescriptor method in Admin |  Major | Admin |
+| [HBASE-22180](https://issues.apache.org/jira/browse/HBASE-22180) | Make 
TestBlockEvictionFromClient.testBlockRefCountAfterSplits more stable |  Major | 
test |
+| [HBASE-22179](https://issues.apache.org/jira/browse/HBASE-22179) | Fix 
RawAsyncHBaseAdmin.getCompactionState |  Major | Admin, asyncclient |
+| [HBASE-22177](https://issues.apache.org/jira/browse/HBASE-22177) | Do not 
recreate IOException in RawAsyncHBaseAdmin.adminCall |  Major | Admin, 
asyncclient |
+| [HBASE-22070](https://issues.apache.org/jira/browse/HBASE-22070) | Checking 
restoreDir in RestoreSnapshotHelper |  Minor | snapshots |
+| [HBASE-20912](https://issues.apache.org/jira/browse/HBASE-20912) | Add 
import order config in dev support for eclipse |  Major | . |
+| [HBASE-22133](https://issues.apache.org/jira/browse/HBASE-22133) | Forward 
port HBASE-22073 "/rits.jsp throws an exception if no procedure" to branch-2.2+ 
|  Major | UI |
+| [HBASE-20911](https://issues.apache.org/jira/browse/HBASE-20911) | correct 
Swtich/case indentation in formatter template for eclipse |  Major | . |
+| [HBASE-21688](https://issues.apache.org/jira/browse/HBASE-21688) | Address 
WAL filesystem issues |  Major | Filesystem Integration, wal |
+| [HBASE-22121](https://issues.apache.org/jira/browse/HBASE-22121) | 
AsyncAdmin can not deal with non default meta replica |  Major | Admin, 
asyncclient, Client |
+| [HBASE-22115](https://issues.apache.org/jira/browse/HBASE-22115) | HBase RPC 
aspires to grow an infinite tree of trace scopes; some other places are also 
unsafe |  Critical | . |
+| [HBASE-22123](https://issues.apache.org/jira/browse/HBASE-22123) | REST 
gateway reports Insufficient permissions exceptions as 404 Not Found |  Minor | 
REST |
+| [HBASE-21135](https://issues.apache.org/jira/browse/HBASE-21135) | Build 
fails on windows as it fails to parse windows path during license check |  
Major | build |
+| [HBASE-21781](https://issues.apache.org/jira/browse/HBASE-21781) | 
list\_deadservers elapsed time is incorrect |  Major | shell |
+| [HBASE-22100](https://issues.apache.org/jira/browse/HBASE-22100) | False 
positive for error prone warnings in pre commit job |  Minor | build |
+| [HBASE-22098](https://issues.apache.org/jira/browse/HBASE-22098) | Backport 
HBASE-18667 "Disable error-prone for hbase-protocol-shaded" to branch-2 |  
Major | build |
+| [HBASE-20662](https://issues.apache.org/jira/browse/HBASE-20662) | 
Increasing space quota on a violated table does not remove 
SpaceViolationPolicy.DISABLE enforcement |  Major | . |
+| [HBASE-22057](https://issues.apache.org/jira/browse/HBASE-22057) | Impose 
upper-bound on size of ZK ops sent in a single multi() |  Major | . |
+| [HBASE-22074](https://issues.apache.org/jira/browse/HBASE-22074) | Should 
use procedure store to persist the state in reportRegionStateTransition |  
Blocker | amv2, proc-v2 |
+| [HBASE-21619](https://issues.apache.org/jira/browse/HBASE-21619) | Fix 
warning message caused by incorrect ternary operator evaluation |  Trivial | . |
+| [HBASE-22095](https://issues.apache.org/jira/browse/HBASE-22095) | Taking a 
snapshot fails in local mode |  Major | . |
+| [HBASE-22061](https://issues.apache.org/jira/browse/HBASE-22061) | 
SplitTableRegionProcedure should hold the lock of its daughter regions |  Major 
| . |
+| [HBASE-22045](https://issues.apache.org/jira/browse/HBASE-22045) | Mutable 
range histogram reports incorrect outliers |  Major | . |
+| [HBASE-21736](https://issues.apache.org/jira/browse/HBASE-21736) | Remove 
the server from online servers before scheduling SCP for it in hbck |  Major | 
hbck2, test |
+| [HBASE-22011](https://issues.apache.org/jira/browse/HBASE-22011) | 
ThriftUtilities.getFromThrift should set filter when not set columns |  Major | 
. |
+| [HBASE-21990](https://issues.apache.org/jira/browse/HBASE-21990) | 
puppycrawl checkstyle dtds 404... moved to sourceforge |  Major | build |
+| [HBASE-22010](https://issues.apache.org/jira/browse/HBASE-22010) | docs on 
upgrade from 2.0,2.1 -\> 2.2 renders incorrectly |  Minor | documentation |
+| [HBASE-22006](https://issues.apache.org/jira/browse/HBASE-22006) | Fix 
branch-2.1 findbugs warning; causes nightly show as failed. |  Major | . |
+| [HBASE-21960](https://issues.apache.org/jira/browse/HBASE-21960) | 
RESTServletContainer not configured for REST Jetty server |  Blocker | REST |
+| [HBASE-21915](https://issues.apache.org/jira/browse/HBASE-21915) | 
FileLink$FileLinkInputStream doesn't implement CanUnbuffer |  Major | 
Filesystem Integration |
+| [HBASE-21565](https://issues.apache.org/jira/browse/HBASE-21565) | Delete 
dead server from dead server list too early leads to concurrent Server Crash 
Procedures(SCP) for a same server |  Critical | . |
+| [HBASE-21740](https://issues.apache.org/jira/browse/HBASE-21740) | NPE 
happens while shutdown the RS |  Major | . |
+| [HBASE-21866](https://issues.apache.org/jira/browse/HBASE-21866) | Do not 
move the table to null rsgroup when creating an existing table |  Major | 
proc-v2, rsgroup |
+| [HBASE-21983](https://issues.apache.org/jira/browse/HBASE-21983) | Should 
track the scan metrics in AsyncScanSingleRegionRpcRetryingCaller if scan 
metrics is enabled |  Major | asyncclient, Client |
+| [HBASE-21980](https://issues.apache.org/jira/browse/HBASE-21980) | Fix typo 
in AbstractTestAsyncTableRegionReplicasRead |  Major | test |
+| [HBASE-21487](https://issues.apache.org/jira/browse/HBASE-21487) | 
Concurrent modify table ops can lead to unexpected results |  Major | . |
+| [HBASE-20724](https://issues.apache.org/jira/browse/HBASE-20724) | Sometimes 
some compacted storefiles are still opened after region failover |  Critical | 
. |
+| [HBASE-21961](https://issues.apache.org/jira/browse/HBASE-21961) | Infinite 
loop in AsyncNonMetaRegionLocator if there is only one region and we tried to 
locate before a non empty row |  Critical | asyncclient, Client |
+| [HBASE-21943](https://issues.apache.org/jira/browse/HBASE-21943) | The usage 
of RegionLocations.mergeRegionLocations is wrong for async client |  Critical | 
asyncclient, Client |
+| [HBASE-21947](https://issues.apache.org/jira/browse/HBASE-21947) | TestShell 
is broken after we remove the jackson dependencies |  Major | dependencies, 
shell |
+| [HBASE-21942](https://issues.apache.org/jira/browse/HBASE-21942) | [UI] 
requests per second is incorrect in rsgroup page(rsgroup.jsp) |  Minor | . |
+| [HBASE-21922](https://issues.apache.org/jira/browse/HBASE-21922) | 
BloomContext#sanityCheck may failed when use ROWPREFIX\_DELIMITED bloom filter 
|  Major | . |
+| [HBASE-21929](https://issues.apache.org/jira/browse/HBASE-21929) | The 
checks at the end of TestRpcClientLeaks are not executed |  Major | test |
+| [HBASE-21938](https://issues.apache.org/jira/browse/HBASE-21938) | Add a new 
ClusterMetrics.Option SERVERS\_NAME to only return the live region servers's 
name without metrics |  Major | . |
+| [HBASE-21928](https://issues.apache.org/jira/browse/HBASE-21928) | 
Deprecated HConstants.META\_QOS |  Major | Client, rpc |
+| [HBASE-21899](https://issues.apache.org/jira/browse/HBASE-21899) | Fix 
missing variables in slf4j Logger |  Trivial | logging |
+| [HBASE-21910](https://issues.apache.org/jira/browse/HBASE-21910) | The nonce 
implementation is wrong for AsyncTable |  Critical | asyncclient, Client |
+| [HBASE-21900](https://issues.apache.org/jira/browse/HBASE-21900) | Infinite 
loop in AsyncMetaRegionLocator if we can not get the location for meta |  Major 
| asyncclient, Client |
+| [HBASE-21890](https://issues.apache.org/jira/browse/HBASE-21890) | Use 
execute instead of submit to submit a task in RemoteProcedureDispatcher |  
Critical | proc-v2 |
+| [HBASE-21889](https://issues.apache.org/jira/browse/HBASE-21889) | Use 
thrift 0.12.0 when build thrift by compile-thrift profile |  Major | . |
+| [HBASE-21785](https://issues.apache.org/jira/browse/HBASE-21785) | master 
reports open regions as RITs and also messes up rit age metric |  Major | . |
+| [HBASE-21854](https://issues.apache.org/jira/browse/HBASE-21854) | Race 
condition in TestProcedureSkipPersistence |  Minor | proc-v2 |
+| [HBASE-21862](https://issues.apache.org/jira/browse/HBASE-21862) | 
IPCUtil.wrapException should keep the original exception types for all the 
connection exceptions |  Blocker | . |
+| [HBASE-18484](https://issues.apache.org/jira/browse/HBASE-18484) | VerifyRep 
by snapshot  does not work when Yarn / SourceHBase / PeerHBase located in 
different HDFS clusters |  Major | Replication |
+| [HBASE-21775](https://issues.apache.org/jira/browse/HBASE-21775) | The 
BufferedMutator doesn't ever refresh region location cache |  Major | Client |
+| [HBASE-21843](https://issues.apache.org/jira/browse/HBASE-21843) | 
RegionGroupingProvider breaks the meta wal file name pattern which may cause 
data loss for meta region |  Blocker | wal |
+| [HBASE-21795](https://issues.apache.org/jira/browse/HBASE-21795) | Client 
application may get stuck (time bound) if a table modify op is called 
immediately after split op |  Critical | amv2 |
+| [HBASE-21840](https://issues.apache.org/jira/browse/HBASE-21840) | 
TestHRegionWithInMemoryFlush fails with NPE |  Blocker | test |
+| [HBASE-21811](https://issues.apache.org/jira/browse/HBASE-21811) | region 
can be opened on two servers due to race condition with procedures and server 
reports |  Blocker | amv2 |
+| [HBASE-21644](https://issues.apache.org/jira/browse/HBASE-21644) | Modify 
table procedure runs infinitely for a table having region replication \> 1 |  
Critical | Admin |
+| [HBASE-21733](https://issues.apache.org/jira/browse/HBASE-21733) | 
SnapshotQuotaObserverChore should only fetch space quotas |  Major | . |
+| [HBASE-21699](https://issues.apache.org/jira/browse/HBASE-21699) | Create 
table failed when using  SPLITS\_FILE =\> 'splits.txt' |  Blocker | Client, 
shell |
+| [HBASE-21535](https://issues.apache.org/jira/browse/HBASE-21535) | Zombie 
Master detector is not working |  Critical | master |
+| [HBASE-21770](https://issues.apache.org/jira/browse/HBASE-21770) | Should 
deal with meta table in HRegionLocator.getAllRegionLocations |  Major | Client |
+| [HBASE-21754](https://issues.apache.org/jira/browse/HBASE-21754) | 
ReportRegionStateTransitionRequest should be executed in priority executor |  
Major | . |
+| [HBASE-21475](https://issues.apache.org/jira/browse/HBASE-21475) | Put 
mutation (having TTL set) added via co-processor is retrieved even after TTL 
expires |  Major | Coprocessors |
+| [HBASE-21749](https://issues.apache.org/jira/browse/HBASE-21749) | RS UI may 
throw NPE and make rs-status page inaccessible with multiwal and replication |  
Major | Replication, UI |
+| [HBASE-21746](https://issues.apache.org/jira/browse/HBASE-21746) | Fix two 
concern cases in RegionMover |  Major | . |
+| [HBASE-21732](https://issues.apache.org/jira/browse/HBASE-21732) | Should 
call toUpperCase before using Enum.valueOf in some methods for 
ColumnFamilyDescriptor |  Critical | Client |
+| [HBASE-21704](https://issues.apache.org/jira/browse/HBASE-21704) | The 
implementation of DistributedHBaseCluster.getServerHoldingRegion is incorrect | 
 Major | . |
+| [HBASE-20917](https://issues.apache.org/jira/browse/HBASE-20917) | 
MetaTableMetrics#stop references uninitialized requestsMap for non-meta region 
|  Major | meta, metrics |
+| [HBASE-21639](https://issues.apache.org/jira/browse/HBASE-21639) | 
maxHeapUsage value not read properly from config during EntryBuffers 
initialization |  Minor | . |
+| [HBASE-21225](https://issues.apache.org/jira/browse/HBASE-21225) | Having 
RPC & Space quota on a table/Namespace doesn't allow space quota to be removed 
using 'NONE' |  Major | . |
+| [HBASE-21707](https://issues.apache.org/jira/browse/HBASE-21707) | Fix 
warnings in hbase-rsgroup module and also make the UTs more stable |  Major | 
Region Assignment, rsgroup |
+| [HBASE-20220](https://issues.apache.org/jira/browse/HBASE-20220) | [RSGroup] 
Check if table exists in the cluster before moving it to the specified 
regionserver group |  Major | rsgroup |
+| [HBASE-21691](https://issues.apache.org/jira/browse/HBASE-21691) | Fix flaky 
test TestRecoveredEdits |  Major | . |
+| [HBASE-21695](https://issues.apache.org/jira/browse/HBASE-21695) | Fix flaky 
test TestRegionServerAbortTimeout |  Major | . |
+| [HBASE-21614](https://issues.apache.org/jira/browse/HBASE-21614) | RIT 
recovery with ServerCrashProcedure doesn't account for all regions |  Critical 
| amv2 |
+| [HBASE-21618](https://issues.apache.org/jira/browse/HBASE-21618) | Scan with 
the same startRow(inclusive=true) and stopRow(inclusive=false) returns one 
result |  Critical | Client |
+| [HBASE-21683](https://issues.apache.org/jira/browse/HBASE-21683) | Reset 
readsEnabled flag after successfully flushing the primary region |  Critical | 
read replicas |
+| [HBASE-21630](https://issues.apache.org/jira/browse/HBASE-21630) | [shell] 
Define ENDKEY == STOPROW (we have ENDROW) |  Trivial | shell |
+| [HBASE-21547](https://issues.apache.org/jira/browse/HBASE-21547) | Precommit 
uses master flaky list for other branches |  Major | test |
+| [HBASE-21660](https://issues.apache.org/jira/browse/HBASE-21660) | Apply the 
cell to right memstore for increment/append operation |  Major | . |
+| [HBASE-21646](https://issues.apache.org/jira/browse/HBASE-21646) | Flakey 
TestTableSnapshotInputFormat; DisableTable not completing... |  Major | test |
+| [HBASE-21545](https://issues.apache.org/jira/browse/HBASE-21545) | 
NEW\_VERSION\_BEHAVIOR breaks Get/Scan with specified columns |  Major | API |
+| [HBASE-21629](https://issues.apache.org/jira/browse/HBASE-21629) | 
draining\_servers.rb is broken |  Major | scripts |
+| [HBASE-21621](https://issues.apache.org/jira/browse/HBASE-21621) | Reversed 
scan does not return expected  number of rows |  Critical | Scanners |
+| [HBASE-21620](https://issues.apache.org/jira/browse/HBASE-21620) | Problem 
in scan query when using more than one column prefix filter in some cases. |  
Major | Scanners |
+| [HBASE-21610](https://issues.apache.org/jira/browse/HBASE-21610) | 
numOpenConnections metric is set to -1 when zero server channel exist |  Minor 
| metrics |
+| [HBASE-21498](https://issues.apache.org/jira/browse/HBASE-21498) | Master 
OOM when SplitTableRegionProcedure new CacheConfig and instantiate a new 
BlockCache |  Major | . |
+| [HBASE-21592](https://issues.apache.org/jira/browse/HBASE-21592) | 
quota.addGetResult(r)  throw  NPE |  Major | . |
+| [HBASE-21589](https://issues.apache.org/jira/browse/HBASE-21589) | 
TestCleanupMetaWAL fails |  Blocker | test, wal |
+| [HBASE-21575](https://issues.apache.org/jira/browse/HBASE-21575) | memstore 
above high watermark message is logged too much |  Minor | logging, 
regionserver |
+| [HBASE-21582](https://issues.apache.org/jira/browse/HBASE-21582) | If call 
HBaseAdmin#snapshotAsync but forget call isSnapshotFinished, then 
SnapshotHFileCleaner will skip to run every time |  Major | . |
+| [HBASE-21568](https://issues.apache.org/jira/browse/HBASE-21568) | Disable 
use of BlockCache for LoadIncrementalHFiles |  Major | Client |
+| [HBASE-21453](https://issues.apache.org/jira/browse/HBASE-21453) | Convert 
ReadOnlyZKClient to DEBUG instead of INFO |  Major | logging, Zookeeper |
+| [HBASE-21559](https://issues.apache.org/jira/browse/HBASE-21559) | The 
RestoreSnapshotFromClientTestBase related UT are flaky |  Major | . |
+| [HBASE-21551](https://issues.apache.org/jira/browse/HBASE-21551) | Memory 
leak when use scan with STREAM at server side |  Blocker | regionserver |
+| [HBASE-21550](https://issues.apache.org/jira/browse/HBASE-21550) | Add a new 
method preCreateTableRegionInfos for MasterObserver which allows CPs to modify 
the TableDescriptor |  Major | Coprocessors |
+| [HBASE-21479](https://issues.apache.org/jira/browse/HBASE-21479) | 
Individual tests in TestHRegionReplayEvents class are failing |  Major | . |
+| [HBASE-21518](https://issues.apache.org/jira/browse/HBASE-21518) | 
TestMasterFailoverWithProcedures is flaky |  Major | . |
+| [HBASE-21504](https://issues.apache.org/jira/browse/HBASE-21504) | If enable 
FIFOCompactionPolicy, a compaction may write a "empty" hfile whose maxTimeStamp 
is long max. This kind of hfile will never be archived. |  Critical | 
Compaction |
+| [HBASE-21300](https://issues.apache.org/jira/browse/HBASE-21300) | Fix the 
wrong reference file path when restoring snapshots for tables with MOB columns 
|  Major | . |
+| [HBASE-21507](https://issues.apache.org/jira/browse/HBASE-21507) | 
Compaction failed when execute AbstractMultiFileWriter.beforeShipped() method | 
 Major | Compaction, regionserver |
+| [HBASE-21387](https://issues.apache.org/jira/browse/HBASE-21387) | Race 
condition surrounding in progress snapshot handling in snapshot cache leads to 
loss of snapshot files |  Major | snapshots |
+| [HBASE-21503](https://issues.apache.org/jira/browse/HBASE-21503) | 
Replication normal source can get stuck due potential race conditions between 
source wal reader and wal provider initialization threads. |  Blocker | 
Replication |
+| [HBASE-21466](https://issues.apache.org/jira/browse/HBASE-21466) | 
WALProcedureStore uses wrong FileSystem if wal.dir is not under rootdir |  
Major | . |
+| [HBASE-21445](https://issues.apache.org/jira/browse/HBASE-21445) | CopyTable 
by bulkload will write hfile into yarn's HDFS |  Major | mapreduce |
+| [HBASE-21437](https://issues.apache.org/jira/browse/HBASE-21437) | Bypassed 
procedure throw IllegalArgumentException when its state is WAITING\_TIMEOUT |  
Major | . |
+| [HBASE-21439](https://issues.apache.org/jira/browse/HBASE-21439) | 
StochasticLoadBalancer RegionLoads aren’t being used in RegionLoad cost 
functions |  Major | Balancer |
+| [HBASE-20604](https://issues.apache.org/jira/browse/HBASE-20604) | 
ProtobufLogReader#readNext can incorrectly loop to the same position in the 
stream until the the WAL is rolled |  Critical | Replication, wal |
+| [HBASE-21247](https://issues.apache.org/jira/browse/HBASE-21247) | Custom 
Meta WAL Provider doesn't default to custom WAL Provider whose configuration 
value is outside the enums in Providers |  Major | wal |
+| [HBASE-21430](https://issues.apache.org/jira/browse/HBASE-21430) | 
[hbase-connectors] Move hbase-spark\* modules to hbase-connectors repo |  Major 
| hbase-connectors, spark |
+| [HBASE-21438](https://issues.apache.org/jira/browse/HBASE-21438) | 
TestAdmin2#testGetProcedures fails due to FailedProcedure inaccessible |  Major 
| . |
+| [HBASE-21425](https://issues.apache.org/jira/browse/HBASE-21425) | 2.1.1 
fails to start over 1.x data; namespace not assigned |  Critical | amv2 |
+| [HBASE-21407](https://issues.apache.org/jira/browse/HBASE-21407) | Resolve 
NPE in backup Master UI |  Minor | UI |
+| [HBASE-21422](https://issues.apache.org/jira/browse/HBASE-21422) | NPE in 
TestMergeTableRegionsProcedure.testMergeWithoutPONR |  Major | proc-v2, test |
+| [HBASE-21424](https://issues.apache.org/jira/browse/HBASE-21424) | Change 
flakies and nightlies so scheduled less often |  Major | build |
+| [HBASE-21417](https://issues.apache.org/jira/browse/HBASE-21417) | Pre 
commit build is broken due to surefire plugin crashes |  Critical | build |
+| [HBASE-21371](https://issues.apache.org/jira/browse/HBASE-21371) | Hbase 
unable to compile against Hadoop trunk (3.3.0-SNAPSHOT) due to license error |  
Major | . |
+| [HBASE-21391](https://issues.apache.org/jira/browse/HBASE-21391) | 
RefreshPeerProcedure should also wait master initialized before executing |  
Major | Replication |
+| [HBASE-21342](https://issues.apache.org/jira/browse/HBASE-21342) | 
FileSystem in use may get closed by other bulk load call  in secure bulkLoad |  
Major | . |
+| [HBASE-21349](https://issues.apache.org/jira/browse/HBASE-21349) | Cluster 
is going down but CatalogJanitor and Normalizer try to run and fail noisely |  
Minor | . |
+| [HBASE-21356](https://issues.apache.org/jira/browse/HBASE-21356) | 
bulkLoadHFile API should ensure that rs has the source hfile's write permission 
|  Major | . |
+| [HBASE-21355](https://issues.apache.org/jira/browse/HBASE-21355) | HStore's 
storeSize is calculated repeatedly which causing the confusing region split |  
Blocker | regionserver |
+| [HBASE-21334](https://issues.apache.org/jira/browse/HBASE-21334) | 
TestMergeTableRegionsProcedure is flakey |  Major | amv2, proc-v2, test |
+| [HBASE-21178](https://issues.apache.org/jira/browse/HBASE-21178) | [BC 
break] : Get and Scan operation with a custom converter\_class not working |  
Critical | shell |
+| [HBASE-21200](https://issues.apache.org/jira/browse/HBASE-21200) | Memstore 
flush doesn't finish because of seekToPreviousRow() in memstore scanner. |  
Critical | Scanners |
+| [HBASE-21292](https://issues.apache.org/jira/browse/HBASE-21292) | 
IdLock.getLockEntry() may hang if interrupted |  Major | . |
+| [HBASE-21335](https://issues.apache.org/jira/browse/HBASE-21335) | Change 
the default wait time of HBCK2 tool |  Critical | . |
+| [HBASE-21291](https://issues.apache.org/jira/browse/HBASE-21291) | Add a 
test for bypassing stuck state-machine procedures |  Major | . |
+| [HBASE-21055](https://issues.apache.org/jira/browse/HBASE-21055) | 
NullPointerException when balanceOverall() but server balance info is null |  
Major | Balancer |
+| [HBASE-21327](https://issues.apache.org/jira/browse/HBASE-21327) | Fix minor 
logging issue where we don't report servername if no associated SCP |  Trivial 
| amv2 |
+| [HBASE-21320](https://issues.apache.org/jira/browse/HBASE-21320) | [canary] 
Cleanup of usage and add commentary |  Major | canary |
+| [HBASE-21266](https://issues.apache.org/jira/browse/HBASE-21266) | Not 
running balancer because processing dead regionservers, but empty dead rs list 
|  Major | . |
+| [HBASE-21260](https://issues.apache.org/jira/browse/HBASE-21260) | The whole 
balancer plans might be aborted if there are more than one plans to move a same 
region |  Major | Balancer, master |
+| [HBASE-21280](https://issues.apache.org/jira/browse/HBASE-21280) | Add 
anchors for each heading in UI |  Trivial | UI, Usability |
+| [HBASE-20764](https://issues.apache.org/jira/browse/HBASE-20764) | build 
broken when latest commit is gpg signed |  Critical | build |
+| [HBASE-18549](https://issues.apache.org/jira/browse/HBASE-18549) | Unclaimed 
replication queues can go undetected |  Critical | Replication |
+| [HBASE-21248](https://issues.apache.org/jira/browse/HBASE-21248) | Implement 
exponential backoff when retrying for ModifyPeerProcedure |  Major | proc-v2, 
Replication |
+| [HBASE-21196](https://issues.apache.org/jira/browse/HBASE-21196) | 
HTableMultiplexer clears the meta cache after every put operation |  Critical | 
Performance |
+| [HBASE-19418](https://issues.apache.org/jira/browse/HBASE-19418) | 
RANGE\_OF\_DELAY in PeriodicMemstoreFlusher should be configurable. |  Minor | 
. |
+| [HBASE-18451](https://issues.apache.org/jira/browse/HBASE-18451) | 
PeriodicMemstoreFlusher should inspect the queue before adding a delayed flush 
request |  Major | regionserver |
+| [HBASE-21228](https://issues.apache.org/jira/browse/HBASE-21228) | Memory 
leak since AbstractFSWAL caches Thread object and never clean later |  Critical 
| wal |
+| [HBASE-20766](https://issues.apache.org/jira/browse/HBASE-20766) | Verify 
Replication Tool Has Typo "remove cluster" |  Trivial | . |
+| [HBASE-21232](https://issues.apache.org/jira/browse/HBASE-21232) | Show 
table state in Tables view on Master home page |  Major | Operability, UI |
+| [HBASE-21212](https://issues.apache.org/jira/browse/HBASE-21212) | Wrong 
flush time when update flush metric |  Minor | . |
+| [HBASE-21208](https://issues.apache.org/jira/browse/HBASE-21208) | 
Bytes#toShort doesn't work without unsafe |  Critical | . |
+| [HBASE-20704](https://issues.apache.org/jira/browse/HBASE-20704) | Sometimes 
some compacted storefiles are not archived on region close |  Critical | 
Compaction |
+| [HBASE-21203](https://issues.apache.org/jira/browse/HBASE-21203) | 
TestZKMainServer#testCommandLineWorks won't pass with default 4lw whitelist |  
Minor | test, Zookeeper |
+| [HBASE-21102](https://issues.apache.org/jira/browse/HBASE-21102) | 
ServerCrashProcedure should select target server where no other replicas exist 
for the current region |  Major | Region Assignment |
+| [HBASE-21206](https://issues.apache.org/jira/browse/HBASE-21206) | Scan with 
batch size may return incomplete cells |  Critical | Scanners |
+| [HBASE-21182](https://issues.apache.org/jira/browse/HBASE-21182) | Failed to 
execute start-hbase.sh |  Major | . |
+| [HBASE-21179](https://issues.apache.org/jira/browse/HBASE-21179) | Fix the 
number of actions in responseTooSlow log |  Major | logging, rpc |
+| [HBASE-21174](https://issues.apache.org/jira/browse/HBASE-21174) | [REST] 
Failed to parse empty qualifier in TableResource#getScanResource |  Major | 
REST |
+| [HBASE-21181](https://issues.apache.org/jira/browse/HBASE-21181) | Use the 
same filesystem for wal archive directory and wal directory |  Major | . |
+| [HBASE-21021](https://issues.apache.org/jira/browse/HBASE-21021) | Result 
returned by Append operation should be ordered |  Major | . |
+| [HBASE-21173](https://issues.apache.org/jira/browse/HBASE-21173) | Remove 
the duplicate HRegion#close in TestHRegion |  Minor | test |
+| [HBASE-21144](https://issues.apache.org/jira/browse/HBASE-21144) | 
AssignmentManager.waitForAssignment is not stable |  Major | amv2, test |
+| [HBASE-21143](https://issues.apache.org/jira/browse/HBASE-21143) | Update 
findbugs-maven-plugin to 3.0.4 |  Major | pom |
+| [HBASE-21171](https://issues.apache.org/jira/browse/HBASE-21171) | [amv2] 
Tool to parse a directory of MasterProcWALs standalone |  Major | amv2, test |
+| [HBASE-21052](https://issues.apache.org/jira/browse/HBASE-21052) | After 
restoring a snapshot, table.jsp page for the table gets stuck |  Major | 
snapshots |
+| [HBASE-21001](https://issues.apache.org/jira/browse/HBASE-21001) | 
ReplicationObserver fails to load in HBase 2.0.0 |  Major | . |
+| [HBASE-20741](https://issues.apache.org/jira/browse/HBASE-20741) | Split of 
a region with replicas creates all daughter regions and its replica in same 
server |  Major | read replicas |
+| [HBASE-21127](https://issues.apache.org/jira/browse/HBASE-21127) | 
TableRecordReader need to handle cursor result too |  Major | . |
+| [HBASE-20892](https://issues.apache.org/jira/browse/HBASE-20892) | [UI] 
Start / End keys are empty on table.jsp |  Major | . |
+| [HBASE-21136](https://issues.apache.org/jira/browse/HBASE-21136) | NPE in 
MetricsTableSourceImpl.updateFlushTime |  Major | metrics |
+| [HBASE-21132](https://issues.apache.org/jira/browse/HBASE-21132) | return 
wrong result in rest multiget |  Major | . |
+| [HBASE-21128](https://issues.apache.org/jira/browse/HBASE-21128) | 
TestAsyncRegionAdminApi.testAssignRegionAndUnassignRegion is broken |  Major | 
test |
+| [HBASE-20940](https://issues.apache.org/jira/browse/HBASE-20940) | 
HStore.cansplit should not allow split to happen if it has references |  Major 
| . |
+| [HBASE-21084](https://issues.apache.org/jira/browse/HBASE-21084) | When 
cloning a snapshot including a split parent region, the split parent region of 
the cloned table will be online |  Major | snapshots |
+| [HBASE-20968](https://issues.apache.org/jira/browse/HBASE-20968) | 
list\_procedures\_test fails due to no matching regex |  Major | shell, test |
+| [HBASE-21030](https://issues.apache.org/jira/browse/HBASE-21030) | Correct 
javadoc for append operation |  Minor | documentation |
+| [HBASE-21088](https://issues.apache.org/jira/browse/HBASE-21088) | 
HStoreFile should be closed in HStore#hasReferences |  Major | . |
+| [HBASE-20890](https://issues.apache.org/jira/browse/HBASE-20890) | PE 
filterScan seems to be stuck forever |  Minor | . |
+| [HBASE-20772](https://issues.apache.org/jira/browse/HBASE-20772) | 
Controlled shutdown fills Master log with the disturbing message "No matching 
procedure found for rit=OPEN, location=ZZZZ, table=YYYYY, region=XXXX 
transition to CLOSED |  Major | logging |
+| [HBASE-20978](https://issues.apache.org/jira/browse/HBASE-20978) | [amv2] 
Worker terminating UNNATURALLY during MoveRegionProcedure |  Critical | amv2 |
+| [HBASE-21078](https://issues.apache.org/jira/browse/HBASE-21078) | [amv2] 
CODE-BUG NPE in RTP doing Unassign |  Major | amv2 |
+| [HBASE-21113](https://issues.apache.org/jira/browse/HBASE-21113) | Apply the 
branch-2 version of HBASE-21095, The timeout retry logic for several procedures 
are broken after master restarts |  Major | amv2 |
+| [HBASE-21101](https://issues.apache.org/jira/browse/HBASE-21101) | Remove 
the waitUntilAllRegionsAssigned call after split in TestTruncateTableProcedure 
|  Major | test |
+| [HBASE-19008](https://issues.apache.org/jira/browse/HBASE-19008) | Add 
missing equals or hashCode method(s) to stock Filter implementations |  Major | 
. |
+| [HBASE-20614](https://issues.apache.org/jira/browse/HBASE-20614) | REST scan 
API with incorrect filter text file throws HTTP 503 Service Unavailable error | 
 Minor | REST |
+| [HBASE-21041](https://issues.apache.org/jira/browse/HBASE-21041) | 
Memstore's heap size will be decreased to minus zero after flush |  Major | . |
+| [HBASE-21031](https://issues.apache.org/jira/browse/HBASE-21031) | Memory 
leak if replay edits failed during region opening |  Major | . |
+| [HBASE-20666](https://issues.apache.org/jira/browse/HBASE-20666) | 
Unsuccessful table creation leaves entry in hbase:rsgroup table |  Minor | . |
+| [HBASE-21032](https://issues.apache.org/jira/browse/HBASE-21032) | 
ScanResponses contain only one cell each |  Major | Performance, Scanners |

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