You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by st...@apache.org on 2021/07/27 03:15:15 UTC
svn commit: r49016 [2/4] - /dev/hbase/2.3.6RC2/
Added: dev/hbase/2.3.6RC2/CHANGES.md
==============================================================================
--- dev/hbase/2.3.6RC2/CHANGES.md (added)
+++ dev/hbase/2.3.6RC2/CHANGES.md Tue Jul 27 03:15:15 2021
@@ -0,0 +1,8816 @@
+# 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 2.3.6 - Unreleased (as of 2021-07-26)
+
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-26108](https://issues.apache.org/jira/browse/HBASE-26108) | add option to disable scanMetrics in TableSnapshotInputFormat | Major | . |
+| [HBASE-26025](https://issues.apache.org/jira/browse/HBASE-26025) | Add a flag to mark if the IOError can be solved by retry in thrift IOError | Major | Thrift |
+| [HBASE-26012](https://issues.apache.org/jira/browse/HBASE-26012) | Improve logging and dequeue logic in DelayQueue | Minor | . |
+| [HBASE-25937](https://issues.apache.org/jira/browse/HBASE-25937) | Clarify UnknownRegionException | Minor | Client |
+| [HBASE-25998](https://issues.apache.org/jira/browse/HBASE-25998) | Revisit synchronization in SyncFuture | Major | Performance, regionserver, wal |
+| [HBASE-26000](https://issues.apache.org/jira/browse/HBASE-26000) | Optimize the display of ZK dump in the master web UI | Minor | . |
+| [HBASE-25995](https://issues.apache.org/jira/browse/HBASE-25995) | Change the method name for DoubleArrayCost.setCosts | Major | Balancer |
+| [HBASE-25993](https://issues.apache.org/jira/browse/HBASE-25993) | Make excluded SSL cipher suites configurable for all Web UIs | Major | . |
+| [HBASE-25987](https://issues.apache.org/jira/browse/HBASE-25987) | Make SSL keystore type configurable for HBase ThriftServer | Major | Thrift |
+| [HBASE-25933](https://issues.apache.org/jira/browse/HBASE-25933) | Log trace raw exception, instead of cause message in NettyRpcServerRequestDecoder | Minor | . |
+| [HBASE-25860](https://issues.apache.org/jira/browse/HBASE-25860) | Add metric for successful wal roll requests. | Major | metrics, wal |
+| [HBASE-25754](https://issues.apache.org/jira/browse/HBASE-25754) | StripeCompactionPolicy should support compacting cold regions | Minor | Compaction |
+| [HBASE-25798](https://issues.apache.org/jira/browse/HBASE-25798) | typo in MetricsAssertHelper | Minor | . |
+| [HBASE-25770](https://issues.apache.org/jira/browse/HBASE-25770) | Http InfoServers should honor gzip encoding when requested | Major | UI |
+| [HBASE-25776](https://issues.apache.org/jira/browse/HBASE-25776) | Use Class.asSubclass to fix the warning in StochasticLoadBalancer.loadCustomCostFunctions | Minor | Balancer |
+| [HBASE-25767](https://issues.apache.org/jira/browse/HBASE-25767) | CandidateGenerator.getRandomIterationOrder is too slow on large cluster | Major | Balancer, Performance |
+| [HBASE-25762](https://issues.apache.org/jira/browse/HBASE-25762) | Improvement for some debug-logging guards | Minor | logging, Performance |
+| [HBASE-25653](https://issues.apache.org/jira/browse/HBASE-25653) | Add units and round off region size to 2 digits after decimal | Major | master, Normalizer |
+| [HBASE-25482](https://issues.apache.org/jira/browse/HBASE-25482) | Improve SimpleRegionNormalizer#getAverageRegionSizeMb | Minor | Normalizer |
+| [HBASE-25759](https://issues.apache.org/jira/browse/HBASE-25759) | The master services field in LocalityBasedCostFunction is never used | Major | Balancer |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25165](https://issues.apache.org/jira/browse/HBASE-25165) | Change 'State time' in UI so sorts | Minor | UI |
+| [HBASE-24984](https://issues.apache.org/jira/browse/HBASE-24984) | WAL corruption due to early DBBs re-use when Durability.ASYNC\_WAL is used with multi operation | Critical | rpc, wal |
+| [HBASE-26088](https://issues.apache.org/jira/browse/HBASE-26088) | conn.getBufferedMutator(tableName) leaks thread executors and other problems | Critical | Client |
+| [HBASE-25973](https://issues.apache.org/jira/browse/HBASE-25973) | Balancer should explain progress in a better way in log | Major | Balancer |
+| [HBASE-26083](https://issues.apache.org/jira/browse/HBASE-26083) | L1 miss metric is incorrect when using CombinedBlockCache | Minor | BlockCache |
+| [HBASE-26086](https://issues.apache.org/jira/browse/HBASE-26086) | TestHRegionReplayEvents do not pass in branch-2 and throws NullPointerException | Minor | . |
+| [HBASE-26068](https://issues.apache.org/jira/browse/HBASE-26068) | The last assertion in TestHStore.testRefreshStoreFilesNotChanged is wrong | Major | test |
+| [HBASE-22923](https://issues.apache.org/jira/browse/HBASE-22923) | hbase:meta is assigned to localhost when we downgrade the hbase version | Major | . |
+| [HBASE-26030](https://issues.apache.org/jira/browse/HBASE-26030) | hbase-cleanup.sh did not clean the wal dir if hbase.wal.dir configured individually | Major | scripts |
+| [HBASE-26035](https://issues.apache.org/jira/browse/HBASE-26035) | Redundant null check in the compareTo function | Minor | metrics, Performance |
+| [HBASE-25902](https://issues.apache.org/jira/browse/HBASE-25902) | Add missing CFs in meta during HBase 1 to 2.3+ Upgrade | Critical | meta, Operability |
+| [HBASE-26028](https://issues.apache.org/jira/browse/HBASE-26028) | The view as json page shows exception when using TinyLfuBlockCache | Major | UI |
+| [HBASE-26039](https://issues.apache.org/jira/browse/HBASE-26039) | TestReplicationKillRS is useless after HBASE-23956 | Major | Replication, test |
+| [HBASE-25980](https://issues.apache.org/jira/browse/HBASE-25980) | Master table.jsp pointed at meta throws 500 when no all replicas are online | Major | master, meta replicas, UI |
+| [HBASE-26013](https://issues.apache.org/jira/browse/HBASE-26013) | Get operations readRows metrics becomes zero after HBASE-25677 | Minor | metrics |
+| [HBASE-25877](https://issues.apache.org/jira/browse/HBASE-25877) | Add access check for compactionSwitch | Major | security |
+| [HBASE-25698](https://issues.apache.org/jira/browse/HBASE-25698) | Persistent IllegalReferenceCountException at scanner open when using TinyLfuBlockCache | Major | BucketCache, HFile, Scanners |
+| [HBASE-25984](https://issues.apache.org/jira/browse/HBASE-25984) | FSHLog WAL lockup with sync future reuse [RS deadlock] | Critical | regionserver, wal |
+| [HBASE-25997](https://issues.apache.org/jira/browse/HBASE-25997) | NettyRpcFrameDecoder decode request header wrong when handleTooBigRequest | Major | rpc |
+| [HBASE-25967](https://issues.apache.org/jira/browse/HBASE-25967) | The readRequestsCount does not calculate when the outResults is empty | Major | metrics |
+| [HBASE-25981](https://issues.apache.org/jira/browse/HBASE-25981) | JVM crash when displaying regionserver UI | Major | rpc, UI |
+| [HBASE-25930](https://issues.apache.org/jira/browse/HBASE-25930) | Thrift does not support requests in Kerberos environment | Major | Thrift |
+| [HBASE-25929](https://issues.apache.org/jira/browse/HBASE-25929) | RegionServer JVM crash when compaction | Critical | Compaction |
+| [HBASE-25903](https://issues.apache.org/jira/browse/HBASE-25903) | ReadOnlyZKClient APIs - CompletableFuture.get() calls can cause threads to hang forver when ZK client create throws Non IOException | Major | . |
+| [HBASE-25898](https://issues.apache.org/jira/browse/HBASE-25898) | RS getting aborted due to NPE in Replication WALEntryStream | Critical | Replication |
+| [HBASE-25875](https://issues.apache.org/jira/browse/HBASE-25875) | RegionServer failed to start due to IllegalThreadStateException in AuthenticationTokenSecretManager.start | Major | . |
+| [HBASE-25901](https://issues.apache.org/jira/browse/HBASE-25901) | Replication may lose data during regionserver restart when multiwal is in use | Major | multiwal, Replication |
+| [HBASE-25892](https://issues.apache.org/jira/browse/HBASE-25892) | 'False' should be 'True' in auditlog of listLabels | Major | logging, security |
+| [HBASE-25817](https://issues.apache.org/jira/browse/HBASE-25817) | Memory leak from thrift server hashMap | Minor | Thrift |
+| [HBASE-25848](https://issues.apache.org/jira/browse/HBASE-25848) | Add flexibility to backup replication in case replication filter throws an exception | Major | . |
+| [HBASE-25774](https://issues.apache.org/jira/browse/HBASE-25774) | ServerManager.getOnlineServer may miss some region servers when refreshing state in some procedure implementations | Critical | Replication |
+| [HBASE-25825](https://issues.apache.org/jira/browse/HBASE-25825) | RSGroupBasedLoadBalancer.onConfigurationChange should chain the request to internal balancer | Major | Balancer |
+| [HBASE-25806](https://issues.apache.org/jira/browse/HBASE-25806) | Backport the region location finder initialization fix in HBASE-25802 | Major | Balancer |
+| [HBASE-25717](https://issues.apache.org/jira/browse/HBASE-25717) | RegionServer aborted due to ClassCastException | Major | . |
+| [HBASE-25743](https://issues.apache.org/jira/browse/HBASE-25743) | Retry REQUESTTIMEOUT KeeperExceptions from ZK | Major | Zookeeper |
+| [HBASE-25726](https://issues.apache.org/jira/browse/HBASE-25726) | MoveCostFunction is not included in the list of cost functions for StochasticLoadBalancer | Major | Balancer |
+| [HBASE-25692](https://issues.apache.org/jira/browse/HBASE-25692) | Failure to instantiate WALCellCodec leaks socket in replication | Major | Replication |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25910](https://issues.apache.org/jira/browse/HBASE-25910) | Fix TestClusterPortAssignment.testClusterPortAssignment test and re-enable it. | Minor | flakies, test |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24734](https://issues.apache.org/jira/browse/HBASE-24734) | RegionInfo#containsRange should support check meta table | Major | HFile, MTTR |
+| [HBASE-25739](https://issues.apache.org/jira/browse/HBASE-25739) | TableSkewCostFunction need to use aggregated deviation | Major | Balancer, master |
+| [HBASE-25947](https://issues.apache.org/jira/browse/HBASE-25947) | Backport 'HBASE-25894 Improve the performance for region load and region count related cost functions' to branch-2.4 and branch-2.3 | Major | Balancer, Performance |
+| [HBASE-25963](https://issues.apache.org/jira/browse/HBASE-25963) | HBaseCluster should be marked as IA.Public | Major | API |
+| [HBASE-25941](https://issues.apache.org/jira/browse/HBASE-25941) | TestRESTServerSSL fails because of jdk bug | Major | test |
+| [HBASE-25838](https://issues.apache.org/jira/browse/HBASE-25838) | Use double instead of Double in StochasticLoadBalancer | Major | Balancer, Performance |
+| [HBASE-25840](https://issues.apache.org/jira/browse/HBASE-25840) | CatalogJanitor warns about skipping gc of regions during RIT, but does not actually skip | Minor | . |
+| [HBASE-25775](https://issues.apache.org/jira/browse/HBASE-25775) | Use a special balancer to deal with maintenance mode | Major | Balancer |
+| [HBASE-25199](https://issues.apache.org/jira/browse/HBASE-25199) | Remove HStore#getStoreHomedir | Minor | . |
+| [HBASE-25696](https://issues.apache.org/jira/browse/HBASE-25696) | Need to initialize SLF4JBridgeHandler in jul-to-slf4j for redirecting jul to slf4j | Major | logging |
+| [HBASE-25695](https://issues.apache.org/jira/browse/HBASE-25695) | Link to the filter on hbase:meta from user tables panel on master page | Major | UI |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-26015](https://issues.apache.org/jira/browse/HBASE-26015) | Should implement getRegionServers(boolean) method in AsyncAdmin | Major | Admin, Client |
+| [HBASE-25755](https://issues.apache.org/jira/browse/HBASE-25755) | Exclude tomcat-embed-core from libthrift | Critical | dependencies, Thrift |
+| [HBASE-25750](https://issues.apache.org/jira/browse/HBASE-25750) | Upgrade RpcControllerFactory and HBaseRpcController from Private to LimitedPrivate(COPROC,PHOENIX) | Major | Coprocessors, phoenix, rpc |
+| [HBASE-24305](https://issues.apache.org/jira/browse/HBASE-24305) | Handle deprecations in ServerName | Minor | . |
+| [HBASE-24492](https://issues.apache.org/jira/browse/HBASE-24492) | ProtobufLogReader.readNext does not need looping | Minor | Replication, wal |
+
+
+## Release 2.3.5 - Unreleased (as of 2021-03-25)
+
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25587](https://issues.apache.org/jira/browse/HBASE-25587) | [hbck2] Schedule SCP for all unknown servers | Major | hbase-operator-tools, hbck2 |
+| [HBASE-25460](https://issues.apache.org/jira/browse/HBASE-25460) | Expose drainingServers as cluster metric | Major | metrics |
+| [HBASE-25496](https://issues.apache.org/jira/browse/HBASE-25496) | add get\_namespace\_rsgroup command | Major | . |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25621](https://issues.apache.org/jira/browse/HBASE-25621) | Balancer should check region plan source to avoid misplace region groups | Major | Balancer |
+| [HBASE-25374](https://issues.apache.org/jira/browse/HBASE-25374) | Make REST Client connection and socket time out configurable | Minor | REST |
+| [HBASE-25597](https://issues.apache.org/jira/browse/HBASE-25597) | Add row info in Exception when cell size exceeds maxCellSize | Minor | . |
+| [HBASE-25635](https://issues.apache.org/jira/browse/HBASE-25635) | CandidateGenerator may miss some region balance actions | Major | Balancer |
+| [HBASE-25566](https://issues.apache.org/jira/browse/HBASE-25566) | RoundRobinTableInputFormat | Major | mapreduce |
+| [HBASE-25548](https://issues.apache.org/jira/browse/HBASE-25548) | Optionally allow snapshots to preserve cluster's max filesize config by setting it into table descriptor | Major | . |
+| [HBASE-25582](https://issues.apache.org/jira/browse/HBASE-25582) | Support setting scan ReadType to be STREAM at cluster level | Major | . |
+| [HBASE-23578](https://issues.apache.org/jira/browse/HBASE-23578) | [UI] Master UI shows long stack traces when table is broken | Minor | master, UI |
+| [HBASE-25541](https://issues.apache.org/jira/browse/HBASE-25541) | In WALEntryStream, set the current path to null while dequeing the log | Major | . |
+| [HBASE-25507](https://issues.apache.org/jira/browse/HBASE-25507) | Leak of ESTABLISHED sockets when compaction encountered "java.io.IOException: Invalid HFile block magic" | Major | Compaction |
+| [HBASE-25528](https://issues.apache.org/jira/browse/HBASE-25528) | Dedicated merge dispatch threadpool on master | Minor | master |
+| [HBASE-25536](https://issues.apache.org/jira/browse/HBASE-25536) | Remove 0 length wal file from logQueue if it belongs to old sources. | Major | Replication |
+| [HBASE-25329](https://issues.apache.org/jira/browse/HBASE-25329) | Dump region hashes in logs for the regions that are stuck in transition for more than a configured amount of time | Minor | . |
+| [HBASE-25475](https://issues.apache.org/jira/browse/HBASE-25475) | Improve unit test for HBASE-25445 : SplitWALRemoteProcedure failed to archive split WAL | Minor | wal |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25568](https://issues.apache.org/jira/browse/HBASE-25568) | Upgrade Thrift jar to fix CVE-2020-13949 | Critical | Thrift |
+| [HBASE-25590](https://issues.apache.org/jira/browse/HBASE-25590) | Bulkload replication HFileRefs cannot be cleared in some cases where set exclude-namespace/exclude-table-cfs | Major | Replication |
+| [HBASE-25562](https://issues.apache.org/jira/browse/HBASE-25562) | ReplicationSourceWALReader log and handle exception immediately without retrying | Major | Replication |
+| [HBASE-25685](https://issues.apache.org/jira/browse/HBASE-25685) | asyncprofiler2.0 no longer supports svg; wants html | Major | . |
+| [HBASE-25674](https://issues.apache.org/jira/browse/HBASE-25674) | RegionInfo.parseFrom(DataInputStream) sometimes fails to read the protobuf magic marker | Minor | Client |
+| [HBASE-25639](https://issues.apache.org/jira/browse/HBASE-25639) | meta replica state is not respected during active master switch | Critical | meta replicas |
+| [HBASE-25595](https://issues.apache.org/jira/browse/HBASE-25595) | TestLruBlockCache.testBackgroundEvictionThread is flaky | Major | . |
+| [HBASE-25662](https://issues.apache.org/jira/browse/HBASE-25662) | Fix spotbugs warning in RoundRobinTableInputFormat | Major | findbugs |
+| [HBASE-25657](https://issues.apache.org/jira/browse/HBASE-25657) | Fix spotbugs warnings after upgrading spotbugs to 4.x | Major | findbugs |
+| [HBASE-25646](https://issues.apache.org/jira/browse/HBASE-25646) | Possible Resource Leak in CatalogJanitor | Major | master |
+| [HBASE-25626](https://issues.apache.org/jira/browse/HBASE-25626) | Possible Resource Leak in HeterogeneousRegionCountCostFunction | Major | . |
+| [HBASE-25644](https://issues.apache.org/jira/browse/HBASE-25644) | Scan#setSmall blindly sets ReadType as PREAD | Critical | . |
+| [HBASE-25609](https://issues.apache.org/jira/browse/HBASE-25609) | There is a problem with the SPLITS\_FILE in the HBase shell statement | Minor | . |
+| [HBASE-25421](https://issues.apache.org/jira/browse/HBASE-25421) | There is no limit on the column family length when creating a table | Major | Client |
+| [HBASE-25371](https://issues.apache.org/jira/browse/HBASE-25371) | When openRegion fails during initial verification(before initializing and setting seq num), exception is observed during region close. | Major | Region Assignment |
+| [HBASE-25611](https://issues.apache.org/jira/browse/HBASE-25611) | ExportSnapshot chmod flag uses value as decimal | Major | . |
+| [HBASE-25586](https://issues.apache.org/jira/browse/HBASE-25586) | Fix HBASE-22492 on branch-2 (SASL GapToken) | Major | rpc |
+| [HBASE-25598](https://issues.apache.org/jira/browse/HBASE-25598) | TestFromClientSide5.testScanMetrics is flaky | Major | . |
+| [HBASE-25556](https://issues.apache.org/jira/browse/HBASE-25556) | Frequent replication "Encountered a malformed edit" warnings | Minor | Operability, Replication |
+| [HBASE-25559](https://issues.apache.org/jira/browse/HBASE-25559) | Terminate threads of oldsources while RS is closing | Major | . |
+| [HBASE-25543](https://issues.apache.org/jira/browse/HBASE-25543) | When configuration "hadoop.security.authorization" is set to false, the system will still try to authorize an RPC and raise AccessDeniedException | Minor | IPC/RPC |
+| [HBASE-25523](https://issues.apache.org/jira/browse/HBASE-25523) | Region normalizer chore thread is getting killed | Major | Normalizer |
+| [HBASE-25533](https://issues.apache.org/jira/browse/HBASE-25533) | The metadata of the table and family should not be an empty string | Major | . |
+| [HBASE-25497](https://issues.apache.org/jira/browse/HBASE-25497) | move\_namespaces\_rsgroup should change hbase.rsgroup.name config in NamespaceDescriptor | Major | . |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25691](https://issues.apache.org/jira/browse/HBASE-25691) | Test failure: TestVerifyBucketCacheFile.testRetrieveFromFile | Major | test |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25629](https://issues.apache.org/jira/browse/HBASE-25629) | Reimplement TestCurrentHourProvider to not depend on unstable TZs | Major | test |
+| [HBASE-25677](https://issues.apache.org/jira/browse/HBASE-25677) | Server+table counters on each scan #nextRaw invocation becomes a bottleneck when heavy load | Major | metrics |
+| [HBASE-25668](https://issues.apache.org/jira/browse/HBASE-25668) | TestCurrentHourProvider fails 100% in branch-2.3 | Minor | flakies |
+| [HBASE-25667](https://issues.apache.org/jira/browse/HBASE-25667) | Remove RSGroup test addition made in parent; depends on functionality not in old branches | Major | . |
+| [HBASE-24900](https://issues.apache.org/jira/browse/HBASE-24900) | Make retain assignment configurable during SCP | Major | amv2 |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25553](https://issues.apache.org/jira/browse/HBASE-25553) | It is better for ReplicationTracker.getListOfRegionServers to return ServerName instead of String | Major | . |
+| [HBASE-25604](https://issues.apache.org/jira/browse/HBASE-25604) | Upgrade spotbugs to 4.x | Major | build, findbugs |
+| [HBASE-25620](https://issues.apache.org/jira/browse/HBASE-25620) | Increase timeout value for pre commit | Major | build, test |
+| [HBASE-25615](https://issues.apache.org/jira/browse/HBASE-25615) | Upgrade java version in pre commit docker file | Major | build |
+| [HBASE-25601](https://issues.apache.org/jira/browse/HBASE-25601) | Remove search hadoop references in book | Major | documentation |
+
+
+## Release 2.3.4 - Unreleased (as of 2021-01-14)
+
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24620](https://issues.apache.org/jira/browse/HBASE-24620) | Add a ClusterManager which submits command to ZooKeeper and its Agent which picks and execute those Commands. | Major | integration tests |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25449](https://issues.apache.org/jira/browse/HBASE-25449) | 'dfs.client.read.shortcircuit' should not be set in hbase-default.xml | Major | conf |
+| [HBASE-25476](https://issues.apache.org/jira/browse/HBASE-25476) | Enable error prone check in pre commit | Major | build |
+| [HBASE-25483](https://issues.apache.org/jira/browse/HBASE-25483) | set the loadMeta log level to debug. | Major | MTTR, Region Assignment |
+| [HBASE-25435](https://issues.apache.org/jira/browse/HBASE-25435) | Slow metric value can be configured | Minor | metrics |
+| [HBASE-25318](https://issues.apache.org/jira/browse/HBASE-25318) | Configure where IntegrationTestImportTsv generates HFiles | Minor | integration tests |
+| [HBASE-24850](https://issues.apache.org/jira/browse/HBASE-24850) | CellComparator perf improvement | Critical | Performance, scan |
+| [HBASE-25425](https://issues.apache.org/jira/browse/HBASE-25425) | Some notes on RawCell | Trivial | . |
+| [HBASE-25420](https://issues.apache.org/jira/browse/HBASE-25420) | Some minor improvements in rpc implementation | Minor | rpc |
+| [HBASE-25246](https://issues.apache.org/jira/browse/HBASE-25246) | Backup/Restore hbase cell tags. | Major | backup&restore |
+| [HBASE-25328](https://issues.apache.org/jira/browse/HBASE-25328) | Add builder method to create Tags. | Minor | . |
+| [HBASE-25339](https://issues.apache.org/jira/browse/HBASE-25339) | Method parameter and member variable are duplicated in checkSplittable() of SplitTableRegionProcedure | Minor | . |
+| [HBASE-25237](https://issues.apache.org/jira/browse/HBASE-25237) | 'hbase master stop' shuts down the cluster, not the master only | Major | . |
+| [HBASE-25323](https://issues.apache.org/jira/browse/HBASE-25323) | Fix potential NPE when the zookeeper path of RegionServerTracker does not exist when start | Minor | . |
+| [HBASE-25187](https://issues.apache.org/jira/browse/HBASE-25187) | Improve SizeCachedKV variants initialization | Minor | . |
+| [HBASE-25289](https://issues.apache.org/jira/browse/HBASE-25289) | [testing] Clean up resources after tests in rsgroup\_shell\_test.rb | Major | rsgroup, test |
+| [HBASE-25261](https://issues.apache.org/jira/browse/HBASE-25261) | Upgrade Bootstrap to 3.4.1 | Major | security, UI |
+| [HBASE-25267](https://issues.apache.org/jira/browse/HBASE-25267) | Add SSL keystore type and truststore related configs for HBase RESTServer | Major | REST |
+| [HBASE-25003](https://issues.apache.org/jira/browse/HBASE-25003) | Backport HBASE-24350 and HBASE-24779 to branch-2.2 & branch-2.3 | Major | Replication |
+| [HBASE-25240](https://issues.apache.org/jira/browse/HBASE-25240) | gson format of RpcServer.logResponse is abnormal | Minor | . |
+| [HBASE-24859](https://issues.apache.org/jira/browse/HBASE-24859) | Optimize in-memory representation of mapreduce TableSplit objects | Major | mapreduce |
+| [HBASE-25224](https://issues.apache.org/jira/browse/HBASE-25224) | Maximize sleep for checking meta and namespace regions availability | Major | master |
+| [HBASE-24872](https://issues.apache.org/jira/browse/HBASE-24872) | refactor valueOf PoolType | Minor | Client |
+| [HBASE-24827](https://issues.apache.org/jira/browse/HBASE-24827) | BackPort HBASE-11554 Remove Reusable poolmap Rpc client type. | Major | Client |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25356](https://issues.apache.org/jira/browse/HBASE-25356) | HBaseAdmin#getRegion() needs to filter out non-regionName and non-encodedRegionName | Major | shell |
+| [HBASE-25459](https://issues.apache.org/jira/browse/HBASE-25459) | WAL can't be cleaned in some scenes | Major | . |
+| [HBASE-25434](https://issues.apache.org/jira/browse/HBASE-25434) | SlowDelete & SlowPut metric value should use updateDelete & updatePut | Major | regionserver |
+| [HBASE-25441](https://issues.apache.org/jira/browse/HBASE-25441) | add security check for some APIs in RSRpcServices | Critical | . |
+| [HBASE-25432](https://issues.apache.org/jira/browse/HBASE-25432) | we should add security checks for setTableStateInMeta and fixMeta | Blocker | . |
+| [HBASE-25445](https://issues.apache.org/jira/browse/HBASE-25445) | Old WALs archive fails in procedure based WAL split | Critical | wal |
+| [HBASE-25287](https://issues.apache.org/jira/browse/HBASE-25287) | Forgetting to unbuffer streams results in many CLOSE\_WAIT sockets when loading files | Major | . |
+| [HBASE-25447](https://issues.apache.org/jira/browse/HBASE-25447) | remoteProc is suspended due to OOM ERROR | Major | proc-v2 |
+| [HBASE-24755](https://issues.apache.org/jira/browse/HBASE-24755) | [LOG][RSGroup]Error message is confusing while adding a offline RS to rsgroup | Major | rsgroup |
+| [HBASE-25463](https://issues.apache.org/jira/browse/HBASE-25463) | Fix comment error | Minor | shell |
+| [HBASE-25456](https://issues.apache.org/jira/browse/HBASE-25456) | setRegionStateInMeta need security check | Critical | . |
+| [HBASE-25404](https://issues.apache.org/jira/browse/HBASE-25404) | Procedures table Id under master web UI gets word break to single character | Minor | UI |
+| [HBASE-25277](https://issues.apache.org/jira/browse/HBASE-25277) | postScannerFilterRow impacts Scan performance a lot in HBase 2.x | Critical | Coprocessors, scan |
+| [HBASE-25332](https://issues.apache.org/jira/browse/HBASE-25332) | one NPE | Major | Zookeeper |
+| [HBASE-25361](https://issues.apache.org/jira/browse/HBASE-25361) | [Flakey Tests] branch-2 TestMetaRegionLocationCache.testStandByMetaLocations | Major | flakies |
+| [HBASE-25230](https://issues.apache.org/jira/browse/HBASE-25230) | Embedded zookeeper server not clean up the old data | Minor | Zookeeper |
+| [HBASE-25345](https://issues.apache.org/jira/browse/HBASE-25345) | [Flakey Tests] branch-2 TestReadReplicas#testVerifySecondaryAbilityToReadWithOnFiles | Major | test |
+| [HBASE-25307](https://issues.apache.org/jira/browse/HBASE-25307) | ThreadLocal pooling leads to NullPointerException | Major | Client |
+| [HBASE-25330](https://issues.apache.org/jira/browse/HBASE-25330) | RSGroupInfoManagerImpl#moveServers return is not set of servers moved | Major | rsgroup |
+| [HBASE-25321](https://issues.apache.org/jira/browse/HBASE-25321) | The sort icons not shown after Upgrade JQuery to 3.5.1 | Major | UI |
+| [HBASE-25311](https://issues.apache.org/jira/browse/HBASE-25311) | ui throws NPE | Major | . |
+| [HBASE-25306](https://issues.apache.org/jira/browse/HBASE-25306) | The log in SimpleLoadBalancer#onConfigurationChange is wrong | Major | . |
+| [HBASE-25300](https://issues.apache.org/jira/browse/HBASE-25300) | 'Unknown table hbase:quota' happens when desc table in shell if quota disabled | Major | shell |
+| [HBASE-25255](https://issues.apache.org/jira/browse/HBASE-25255) | Master fails to initialize when creating rs group table | Critical | master, rsgroup |
+| [HBASE-25276](https://issues.apache.org/jira/browse/HBASE-25276) | Need to throw the original exception in HRegion#openHRegion | Major | . |
+| [HBASE-25238](https://issues.apache.org/jira/browse/HBASE-25238) | Upgrading HBase from 2.2.0 to 2.3.x fails because of âMessage missing required fields: stateâ | Critical | . |
+| [HBASE-25234](https://issues.apache.org/jira/browse/HBASE-25234) | [Upgrade]Incompatibility in reading RS report from 2.1 RS when Master is upgraded to a version containing HBASE-21406 | Major | . |
+| [HBASE-25090](https://issues.apache.org/jira/browse/HBASE-25090) | CompactionConfiguration logs unrealistic store file sizes | Minor | Compaction |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25502](https://issues.apache.org/jira/browse/HBASE-25502) | IntegrationTestMTTR fails with TableNotFoundException | Major | integration tests |
+| [HBASE-25370](https://issues.apache.org/jira/browse/HBASE-25370) | Fix flaky test TestClassFinder#testClassFinderDefaultsToOwnPackage | Major | test |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25488](https://issues.apache.org/jira/browse/HBASE-25488) | Clean up mess made by broken create-release in CHANGES.md | Major | create-release |
+| [HBASE-25353](https://issues.apache.org/jira/browse/HBASE-25353) | [Flakey Tests] branch-2 TestShutdownBackupMaster | Major | flakies |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25083](https://issues.apache.org/jira/browse/HBASE-25083) | make sure the next hbase 1.y release has Hadoop 2.10 as a minimum version | Major | documentation, hadoop2 |
+| [HBASE-25342](https://issues.apache.org/jira/browse/HBASE-25342) | Upgrade error prone to 2.4.0 | Major | build |
+| [HBASE-25452](https://issues.apache.org/jira/browse/HBASE-25452) | Use MatcherAssert.assertThat instead of org.junit.Assert.assertThat | Major | test |
+| [HBASE-25400](https://issues.apache.org/jira/browse/HBASE-25400) | [Flakey Tests] branch-2 TestRegionMoveAndAbandon | Major | . |
+| [HBASE-25228](https://issues.apache.org/jira/browse/HBASE-25228) | Delete dev-support/jenkins\_precommit\_jira\_yetus.sh | Minor | build |
+| [HBASE-24200](https://issues.apache.org/jira/browse/HBASE-24200) | Upgrade to Yetus 0.12.0 | Minor | build |
+
+
+## Release 2.3.3 - Unreleased (as of 2020-10-28)
+
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25189](https://issues.apache.org/jira/browse/HBASE-25189) | [Metrics] Add checkAndPut and checkAndDelete latency metrics at table level | Minor | metrics |
+| [HBASE-25193](https://issues.apache.org/jira/browse/HBASE-25193) | Add support for row prefix and type in the WAL Pretty Printer and some minor fixes | Minor | wal |
+| [HBASE-25179](https://issues.apache.org/jira/browse/HBASE-25179) | Assert format is incorrect in HFilePerformanceEvaluation class. | Minor | Performance, test |
+| [HBASE-25146](https://issues.apache.org/jira/browse/HBASE-25146) | Add extra logging at info level to HFileCorruptionChecker in order to report progress | Major | hbck, hbck2 |
+| [HBASE-24981](https://issues.apache.org/jira/browse/HBASE-24981) | Enable table replication fails from 1.x to 2.x if table already exist at peer. | Major | Replication |
+| [HBASE-25109](https://issues.apache.org/jira/browse/HBASE-25109) | Add MR Counters to WALPlayer; currently hard to tell if it is doing anything | Major | . |
+| [HBASE-25082](https://issues.apache.org/jira/browse/HBASE-25082) | Per table WAL metrics: appendCount and appendSize | Major | metrics |
+| [HBASE-25079](https://issues.apache.org/jira/browse/HBASE-25079) | Upgrade Bootstrap to 3.3.7 | Major | security, UI |
+| [HBASE-24976](https://issues.apache.org/jira/browse/HBASE-24976) | REST Server failes to start without any error message | Major | REST |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25206](https://issues.apache.org/jira/browse/HBASE-25206) | Data loss can happen if a cloned table loses original split region(delete table) | Major | proc-v2, Region Assignment, snapshots |
+| [HBASE-25207](https://issues.apache.org/jira/browse/HBASE-25207) | Revisit the implementation and usage of RegionStates.include | Major | Region Assignment |
+| [HBASE-25204](https://issues.apache.org/jira/browse/HBASE-25204) | Nightly job failed as the name of jdk and maven changed | Major | . |
+| [HBASE-25093](https://issues.apache.org/jira/browse/HBASE-25093) | the RSGroupBasedLoadBalancer#retainAssignment throws NPE | Major | rsgroup |
+| [HBASE-25117](https://issues.apache.org/jira/browse/HBASE-25117) | ReplicationSourceShipper thread can not be finished | Major | . |
+| [HBASE-25168](https://issues.apache.org/jira/browse/HBASE-25168) | Unify WAL name timestamp parsers | Major | . |
+| [HBASE-25048](https://issues.apache.org/jira/browse/HBASE-25048) | [HBCK2] Bypassed parent procedures are not updated in store | Major | hbck2, proc-v2 |
+| [HBASE-25147](https://issues.apache.org/jira/browse/HBASE-25147) | Should store the regionNames field in state data for ReopenTableRegionsProcedure | Major | proc-v2 |
+| [HBASE-25115](https://issues.apache.org/jira/browse/HBASE-25115) | HFilePrettyPrinter can't seek to the row which is the first row of a hfile | Major | HFile, tooling |
+| [HBASE-25135](https://issues.apache.org/jira/browse/HBASE-25135) | Convert the internal seperator while emitting the memstore read metrics to # | Minor | . |
+| [HBASE-25096](https://issues.apache.org/jira/browse/HBASE-25096) | WAL size in RegionServer UI is wrong | Major | . |
+| [HBASE-25077](https://issues.apache.org/jira/browse/HBASE-25077) | hbck.jsp page loading fails, logs NPE in master log. | Major | hbck |
+| [HBASE-25088](https://issues.apache.org/jira/browse/HBASE-25088) | CatalogFamilyFormat/MetaTableAccessor.parseRegionInfoFromRegionName incorrectly setEndKey to regionId | Critical | meta |
+| [HBASE-25097](https://issues.apache.org/jira/browse/HBASE-25097) | Wrong RIT page number in Master UI | Minor | UI |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24015](https://issues.apache.org/jira/browse/HBASE-24015) | Coverage for Assign and Unassign of Regions on RegionServer on failure | Major | amv2 |
+| [HBASE-25156](https://issues.apache.org/jira/browse/HBASE-25156) | TestMasterFailover.testSimpleMasterFailover is flaky | Major | test |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25203](https://issues.apache.org/jira/browse/HBASE-25203) | Change the reference url to flaky list in our jenkins jobs | Major | flakies, jenkins |
+| [HBASE-25194](https://issues.apache.org/jira/browse/HBASE-25194) | Do not publish workspace in flaky find job | Major | jenkins |
+| [HBASE-25162](https://issues.apache.org/jira/browse/HBASE-25162) | Make flaky tests run more aggressively | Major | jenkins, scripts, test |
+| [HBASE-25163](https://issues.apache.org/jira/browse/HBASE-25163) | Increase the timeout value for nightly jobs | Major | jenkins, scripts, test |
+| [HBASE-22976](https://issues.apache.org/jira/browse/HBASE-22976) | [HBCK2] Add RecoveredEditsPlayer | Major | hbck2, walplayer |
+| [HBASE-25154](https://issues.apache.org/jira/browse/HBASE-25154) | Set java.io.tmpdir to project build directory to avoid writing std\*deferred files to /tmp | Major | build, test |
+| [HBASE-24503](https://issues.apache.org/jira/browse/HBASE-24503) | Backport HBASE-24492 to all 2.x branch | Minor | . |
+| [HBASE-25133](https://issues.apache.org/jira/browse/HBASE-25133) | Migrate HBase Nightly jenkins job from Hadoop to hbase | Major | jenkins, scripts |
+| [HBASE-25132](https://issues.apache.org/jira/browse/HBASE-25132) | Migrate flaky test jenkins job from Hadoop to hbase | Major | jenkins, scripts |
+| [HBASE-25107](https://issues.apache.org/jira/browse/HBASE-25107) | Migrate flaky reporting jenkins job from Hadoop to hbase | Major | jenkins, scripts |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25120](https://issues.apache.org/jira/browse/HBASE-25120) | Remove the deprecated annotation for MetaTableAccessor.getScanForTableName | Major | meta |
+| [HBASE-25073](https://issues.apache.org/jira/browse/HBASE-25073) | Should not use XXXService.Interface.class.getSimpleName as stub key prefix in AsyncConnectionImpl | Major | Client |
+
+
+## Release 2.3.2 - Unreleased (as of 2020-09-20)
+
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24776](https://issues.apache.org/jira/browse/HBASE-24776) | [hbtop] Support Batch mode | Major | hbtop |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25066](https://issues.apache.org/jira/browse/HBASE-25066) | Use FutureUtils.rethrow in AsyncTableResultScanner to better catch the stack trace | Major | Client, Scanners |
+| [HBASE-25069](https://issues.apache.org/jira/browse/HBASE-25069) | Display region name instead of encoded region name in HBCK report page. | Minor | hbck |
+| [HBASE-24991](https://issues.apache.org/jira/browse/HBASE-24991) | Replace MovedRegionsCleaner with guava cache | Minor | . |
+| [HBASE-25057](https://issues.apache.org/jira/browse/HBASE-25057) | Fix typo "memeber" | Trivial | documentation |
+| [HBASE-24831](https://issues.apache.org/jira/browse/HBASE-24831) | Avoid invoke Counter using reflection in SnapshotInputFormat | Major | . |
+| [HBASE-25006](https://issues.apache.org/jira/browse/HBASE-25006) | Make the cost functions optional for StochastoicBalancer | Major | . |
+| [HBASE-24974](https://issues.apache.org/jira/browse/HBASE-24974) | Provide a flexibility to print only row key and filter for multiple tables in the WALPrettyPrinter | Minor | wal |
+| [HBASE-24937](https://issues.apache.org/jira/browse/HBASE-24937) | table.rb use LocalDateTime to replace Instant | Minor | shell |
+| [HBASE-24940](https://issues.apache.org/jira/browse/HBASE-24940) | runCatalogJanitor() API should return -1 to indicate already running status | Major | . |
+| [HBASE-24569](https://issues.apache.org/jira/browse/HBASE-24569) | Get hostAndWeights in addition using localhost if it is null in local mode | Minor | regionserver |
+| [HBASE-24913](https://issues.apache.org/jira/browse/HBASE-24913) | Refactor TestJMXConnectorServer | Major | test |
+| [HBASE-24898](https://issues.apache.org/jira/browse/HBASE-24898) | Use EnvironmentEdge.currentTime() instead of System.currentTimeMillis() in CurrentHourProvider | Major | tooling |
+| [HBASE-24928](https://issues.apache.org/jira/browse/HBASE-24928) | balanceRSGroup should skip generating balance plan for disabled table and splitParent region | Major | Balancer |
+| [HBASE-24942](https://issues.apache.org/jira/browse/HBASE-24942) | MergeTableRegionsProcedure should not call clean merge region | Major | proc-v2, Region Assignment |
+| [HBASE-24811](https://issues.apache.org/jira/browse/HBASE-24811) | Use class access static field or method | Minor | . |
+| [HBASE-24686](https://issues.apache.org/jira/browse/HBASE-24686) | [LOG] Log improvement in Connection#close | Major | Client, logging |
+| [HBASE-24912](https://issues.apache.org/jira/browse/HBASE-24912) | Enlarge MemstoreFlusherChore/CompactionChecker period for unit test | Major | . |
+| [HBASE-24854](https://issues.apache.org/jira/browse/HBASE-24854) | Correct the help content of assign and unassign commands in hbase shell | Minor | shell |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24896](https://issues.apache.org/jira/browse/HBASE-24896) | 'Stuck' in static initialization creating RegionInfo instance | Major | . |
+| [HBASE-24956](https://issues.apache.org/jira/browse/HBASE-24956) | ConnectionManager#locateRegionInMeta waits for user region lock indefinitely. | Major | Client |
+| [HBASE-24481](https://issues.apache.org/jira/browse/HBASE-24481) | HBase Rest: Request for region detail of a table which doesn't exits is success(200 success code) instead of 404 | Minor | . |
+| [HBASE-25047](https://issues.apache.org/jira/browse/HBASE-25047) | WAL split edits number is negative in RegionServerUI | Minor | UI, wal |
+| [HBASE-25021](https://issues.apache.org/jira/browse/HBASE-25021) | Nightly job should skip hadoop-2 integration test for master | Major | build, scripts |
+| [HBASE-25012](https://issues.apache.org/jira/browse/HBASE-25012) | HBASE-24359 causes replication missed log of some RemoteException | Major | Replication |
+| [HBASE-25009](https://issues.apache.org/jira/browse/HBASE-25009) | Hbck chore logs wrong message when loading regions from RS report | Minor | . |
+| [HBASE-25014](https://issues.apache.org/jira/browse/HBASE-25014) | ScheduledChore is never triggered when initalDelay \> 1.5\*period | Major | . |
+| [HBASE-25016](https://issues.apache.org/jira/browse/HBASE-25016) | Should close ResultScanner in MetaTableAccessor.scanByRegionEncodedName | Critical | master, meta |
+| [HBASE-24958](https://issues.apache.org/jira/browse/HBASE-24958) | CompactingMemStore.timeOfOldestEdit error update | Critical | regionserver |
+| [HBASE-24995](https://issues.apache.org/jira/browse/HBASE-24995) | MetaFixer fails to fix overlaps when multiple tables have overlaps | Major | hbck2 |
+| [HBASE-24719](https://issues.apache.org/jira/browse/HBASE-24719) | Renaming invalid rsgroup throws NPE instead of proper error message | Major | . |
+| [HBASE-19352](https://issues.apache.org/jira/browse/HBASE-19352) | Port HADOOP-10379: Protect authentication cookies with the HttpOnly and Secure flags | Major | . |
+| [HBASE-24971](https://issues.apache.org/jira/browse/HBASE-24971) | Upgrade JQuery to 3.5.1 | Major | security, UI |
+| [HBASE-24968](https://issues.apache.org/jira/browse/HBASE-24968) | One of static initializers of CellComparatorImpl referring to subclass MetaCellComparator | Major | . |
+| [HBASE-24916](https://issues.apache.org/jira/browse/HBASE-24916) | Region hole contains wrong regions pair when hole is created by first region deletion | Major | hbck2 |
+| [HBASE-24892](https://issues.apache.org/jira/browse/HBASE-24892) | config 'hbase.hregion.memstore.mslab.indexchunksize' not be used | Major | . |
+| [HBASE-24871](https://issues.apache.org/jira/browse/HBASE-24871) | Replication may loss data when refresh recovered replication sources | Major | Replication |
+| [HBASE-24885](https://issues.apache.org/jira/browse/HBASE-24885) | STUCK RIT by hbck2 assigns | Major | hbck2, Region Assignment |
+| [HBASE-24926](https://issues.apache.org/jira/browse/HBASE-24926) | Should call setFailure in MergeTableRegionsProcedure when isMergeable returns false | Major | master, proc-v2 |
+| [HBASE-24884](https://issues.apache.org/jira/browse/HBASE-24884) | BulkLoadHFilesTool/LoadIncrementalHFiles should accept -D options from command line parameters | Minor | . |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24979](https://issues.apache.org/jira/browse/HBASE-24979) | Include batch mutatations in client operation timeout tests | Major | . |
+| [HBASE-24894](https://issues.apache.org/jira/browse/HBASE-24894) | [Flakey Test] TestStochasticLoadBalancer.testMoveCostMultiplier | Major | Balancer, master, test |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24857](https://issues.apache.org/jira/browse/HBASE-24857) | Fix several problems when starting webUI | Minor | canary, UI |
+| [HBASE-24918](https://issues.apache.org/jira/browse/HBASE-24918) | Make RegionInfo#UNDEFINED IA.Private | Major | . |
+| [HBASE-24876](https://issues.apache.org/jira/browse/HBASE-24876) | Fix the flaky job url in hbase-personality.sh | Major | . |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25004](https://issues.apache.org/jira/browse/HBASE-25004) | Log RegionTooBusyException details | Major | . |
+| [HBASE-14847](https://issues.apache.org/jira/browse/HBASE-14847) | Add FIFO compaction section to HBase book | Major | documentation |
+
+
+## Release 2.3.1 - Unreleased (as of 2020-08-12)
+
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24709](https://issues.apache.org/jira/browse/HBASE-24709) | Support MoveCostFunction use a lower multiplier in offpeak hours | Major | Balancer |
+| [HBASE-24824](https://issues.apache.org/jira/browse/HBASE-24824) | Add more stats in PE for read replica | Minor | PE, read replicas |
+| [HBASE-21721](https://issues.apache.org/jira/browse/HBASE-21721) | FSHLog : reduce write#syncs() times | Major | . |
+| [HBASE-24823](https://issues.apache.org/jira/browse/HBASE-24823) | Port HBASE-22762 Print the delta between phases in the split/merge/compact/flush transaction journals to master branch | Minor | . |
+| [HBASE-24795](https://issues.apache.org/jira/browse/HBASE-24795) | RegionMover should deal with unknown (split/merged) regions | Major | . |
+| [HBASE-24821](https://issues.apache.org/jira/browse/HBASE-24821) | Simplify the logic of getRegionInfo in TestFlushFromClient to reduce redundancy code | Minor | test |
+| [HBASE-24704](https://issues.apache.org/jira/browse/HBASE-24704) | Make the Table Schema easier to view even there are multiple families | Major | UI |
+| [HBASE-20226](https://issues.apache.org/jira/browse/HBASE-20226) | Performance Improvement Taking Large Snapshots In Remote Filesystems | Minor | snapshots |
+| [HBASE-24722](https://issues.apache.org/jira/browse/HBASE-24722) | Address hbase-shell commands with unintentional return values | Minor | shell |
+| [HBASE-24669](https://issues.apache.org/jira/browse/HBASE-24669) | Logging of ppid should be consistent across all occurrences | Minor | Operability, proc-v2 |
+| [HBASE-24757](https://issues.apache.org/jira/browse/HBASE-24757) | ReplicationSink should limit the batch rowcount for batch mutations based on hbase.rpc.rows.warning.threshold | Major | . |
+| [HBASE-24777](https://issues.apache.org/jira/browse/HBASE-24777) | InfoServer support ipv6 host and port | Minor | UI |
+| [HBASE-24758](https://issues.apache.org/jira/browse/HBASE-24758) | Avoid flooding replication source RSes logs when no sinks are available | Major | Replication |
+| [HBASE-24696](https://issues.apache.org/jira/browse/HBASE-24696) | Include JVM information on Web UI under "Software Attributes" | Minor | UI |
+| [HBASE-24740](https://issues.apache.org/jira/browse/HBASE-24740) | Enable journal logging for HBase snapshot operation | Minor | master |
+| [HBASE-24747](https://issues.apache.org/jira/browse/HBASE-24747) | Log an ERROR if HBaseSaslRpcServer initialisation fails with an uncaught exception | Major | . |
+| [HBASE-24578](https://issues.apache.org/jira/browse/HBASE-24578) | [WAL] Add a parameter to config RingBufferEventHandler's SyncFuture count | Major | wal |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24583](https://issues.apache.org/jira/browse/HBASE-24583) | Normalizer can't actually merge empty regions when neighbor is larger than average size | Major | master, Normalizer |
+| [HBASE-24844](https://issues.apache.org/jira/browse/HBASE-24844) | Exception on standalone (master) shutdown | Minor | Zookeeper |
+| [HBASE-24665](https://issues.apache.org/jira/browse/HBASE-24665) | MultiWAL : Avoid rolling of ALL WALs when one of the WAL needs a roll | Major | wal |
+| [HBASE-24838](https://issues.apache.org/jira/browse/HBASE-24838) | The pre commit job fails to archive surefire reports | Critical | build, scripts |
+| [HBASE-23157](https://issues.apache.org/jira/browse/HBASE-23157) | WAL unflushed seqId tracking may wrong when Durability.ASYNC\_WAL is used | Major | regionserver, wal |
+| [HBASE-24625](https://issues.apache.org/jira/browse/HBASE-24625) | AsyncFSWAL.getLogFileSizeIfBeingWritten does not return the expected synced file length. | Critical | Replication, wal |
+| [HBASE-24788](https://issues.apache.org/jira/browse/HBASE-24788) | Fix the connection leaks on getting hbase admin from unclosed connection | Major | mapreduce |
+| [HBASE-24808](https://issues.apache.org/jira/browse/HBASE-24808) | skip empty log cleaner delegate class names (WAS =\> cleaner.CleanerChore: Can NOT create CleanerDelegate= ClassNotFoundException) | Trivial | . |
+| [HBASE-24767](https://issues.apache.org/jira/browse/HBASE-24767) | Change default to false for HBASE-15519 per-user metrics | Major | metrics |
+| [HBASE-24713](https://issues.apache.org/jira/browse/HBASE-24713) | RS startup with FSHLog throws NPE after HBASE-21751 | Minor | wal |
+| [HBASE-24794](https://issues.apache.org/jira/browse/HBASE-24794) | hbase.rowlock.wait.duration should not be \<= 0 | Minor | regionserver |
+| [HBASE-24797](https://issues.apache.org/jira/browse/HBASE-24797) | Move log code out of loop | Minor | Normalizer |
+| [HBASE-24752](https://issues.apache.org/jira/browse/HBASE-24752) | NPE/500 accessing webui on master startup | Minor | master |
+| [HBASE-24775](https://issues.apache.org/jira/browse/HBASE-24775) | [hbtop] StoreFile size should be rounded off | Minor | hbtop |
+| [HBASE-24675](https://issues.apache.org/jira/browse/HBASE-24675) | On Master restart all servers are assigned to default rsgroup. | Major | rsgroup |
+| [HBASE-22146](https://issues.apache.org/jira/browse/HBASE-22146) | SpaceQuotaViolationPolicy Disable is not working in Namespace level | Major | . |
+| [HBASE-24742](https://issues.apache.org/jira/browse/HBASE-24742) | Improve performance of SKIP vs SEEK logic | Major | Performance, regionserver |
+| [HBASE-24710](https://issues.apache.org/jira/browse/HBASE-24710) | Incorrect checksum calculation in saveVersion.sh | Major | scripts |
+| [HBASE-24714](https://issues.apache.org/jira/browse/HBASE-24714) | Error message is displayed in the UI of table's compaction state if any region of that table is not open. | Major | Compaction, UI |
+| [HBASE-24748](https://issues.apache.org/jira/browse/HBASE-24748) | Add hbase.master.balancer.stochastic.moveCost.offpeak to doc as support dynamically change | Minor | documentation |
+| [HBASE-24746](https://issues.apache.org/jira/browse/HBASE-24746) | The sort icons overlap the col name in master UI | Major | UI |
+| [HBASE-24721](https://issues.apache.org/jira/browse/HBASE-24721) | rename\_rsgroup overwriting the existing rsgroup. | Major | . |
+| [HBASE-24615](https://issues.apache.org/jira/browse/HBASE-24615) | MutableRangeHistogram#updateSnapshotRangeMetrics doesn't calculate the distribution for last bucket. | Major | metrics |
+| [HBASE-24705](https://issues.apache.org/jira/browse/HBASE-24705) | MetaFixer#fixHoles() does not include the case for read replicas (i.e, replica regions are not created) | Major | read replicas |
+| [HBASE-24720](https://issues.apache.org/jira/browse/HBASE-24720) | Meta replicas not cleaned when disabled | Minor | read replicas |
+| [HBASE-24693](https://issues.apache.org/jira/browse/HBASE-24693) | regioninfo#isLast() has a logic error | Minor | . |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24715](https://issues.apache.org/jira/browse/HBASE-24715) | Cleanup RELEASENOTES.md in the wake of HBASE-24711 | Major | community |
+| [HBASE-24841](https://issues.apache.org/jira/browse/HBASE-24841) | Change the jenkins job urls in our jenkinsfile | Major | build, scripts |
+| [HBASE-24846](https://issues.apache.org/jira/browse/HBASE-24846) | Address compaction races in TestFIFOCompactionPolicy | Major | Compaction, master |
+| [HBASE-24698](https://issues.apache.org/jira/browse/HBASE-24698) | Turn OFF Canary WebUI as default | Major | canary |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24835](https://issues.apache.org/jira/browse/HBASE-24835) | Normalizer should log a successful run at INFO level | Minor | Normalizer |
+| [HBASE-24662](https://issues.apache.org/jira/browse/HBASE-24662) | Update DumpClusterStatusAction to notice changes in region server count | Major | integration tests |
+| [HBASE-24658](https://issues.apache.org/jira/browse/HBASE-24658) | Update PolicyBasedChaosMonkey to handle uncaught exceptions | Minor | integration tests |
+
+
+## Release 2.3.0 - Unreleased (as of 2020-07-06)
+
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-18659](https://issues.apache.org/jira/browse/HBASE-18659) | Use HDFS ACL to give user the ability to read snapshot directly on HDFS | Major | . |
+| [HBASE-24260](https://issues.apache.org/jira/browse/HBASE-24260) | Add a ClusterManager that issues commands via coprocessor | Major | integration tests |
+| [HBASE-22285](https://issues.apache.org/jira/browse/HBASE-22285) | A normalizer which merges very small size regions with adjacent regions.(MergeToNormalize) | Minor | master |
+| [HBASE-22978](https://issues.apache.org/jira/browse/HBASE-22978) | Online slow response log | Minor | Admin, Operability, regionserver, shell |
+| [HBASE-23146](https://issues.apache.org/jira/browse/HBASE-23146) | Support CheckAndMutate with multiple conditions | Major | . |
+| [HBASE-18095](https://issues.apache.org/jira/browse/HBASE-18095) | Provide an option for clients to find the server hosting META that does not involve the ZooKeeper client | Major | Client |
+| [HBASE-23710](https://issues.apache.org/jira/browse/HBASE-23710) | Priority configuration for system coprocessors | Major | Coprocessors |
+| [HBASE-23653](https://issues.apache.org/jira/browse/HBASE-23653) | Expose content of meta table in web ui | Minor | master, Operability, UI |
+| [HBASE-23073](https://issues.apache.org/jira/browse/HBASE-23073) | Add an optional costFunction to balance regions according to a capacity rule | Minor | master |
+| [HBASE-22280](https://issues.apache.org/jira/browse/HBASE-22280) | Separate read/write handler for priority request(especially for meta). | Major | Scheduler |
+| [HBASE-22969](https://issues.apache.org/jira/browse/HBASE-22969) | A new binary component comparator(BinaryComponentComparator) to perform comparison of arbitrary length and position | Minor | Filters |
+| [HBASE-21874](https://issues.apache.org/jira/browse/HBASE-21874) | Bucket cache on Persistent memory | Major | BucketCache |
+| [HBASE-11062](https://issues.apache.org/jira/browse/HBASE-11062) | hbtop | Major | hbtop |
+| [HBASE-22623](https://issues.apache.org/jira/browse/HBASE-22623) | Add RegionObserver coprocessor hook for preWALAppend | Major | . |
+| [HBASE-15666](https://issues.apache.org/jira/browse/HBASE-15666) | shaded dependencies for hbase-testing-util | Critical | test |
+| [HBASE-22313](https://issues.apache.org/jira/browse/HBASE-22313) | Add a method to FsDelegationToken to accept token kind | Minor | security |
+| [HBASE-22648](https://issues.apache.org/jira/browse/HBASE-22648) | Snapshot TTL | Minor | snapshots |
+| [HBASE-22622](https://issues.apache.org/jira/browse/HBASE-22622) | WALKey Extended Attributes | Major | wal |
+| [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-17942](https://issues.apache.org/jira/browse/HBASE-17942) | Disable region splits and merges per table | Major | . |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-24562](https://issues.apache.org/jira/browse/HBASE-24562) | Stabilize master startup with meta replicas enabled | Major | meta, read replicas |
+| [HBASE-24221](https://issues.apache.org/jira/browse/HBASE-24221) | Support bulkLoadHFile by family | Major | HFile |
+| [HBASE-24603](https://issues.apache.org/jira/browse/HBASE-24603) | Zookeeper sync() call is async | Critical | master, regionserver |
+| [HBASE-24205](https://issues.apache.org/jira/browse/HBASE-24205) | Create metric to know the number of reads that happens from memstore | Major | metrics |
+| [HBASE-24605](https://issues.apache.org/jira/browse/HBASE-24605) | Break long region names in the web UI | Minor | UI |
+| [HBASE-15161](https://issues.apache.org/jira/browse/HBASE-15161) | Umbrella: Miscellaneous improvements from production usage | Major | . |
+| [HBASE-24102](https://issues.apache.org/jira/browse/HBASE-24102) | RegionMover should exclude draining/decommissioning nodes from target RSs | Major | . |
+| [HBASE-24380](https://issues.apache.org/jira/browse/HBASE-24380) | Improve WAL splitting log lines to enable sessionization | Minor | logging, Operability, wal |
+| [HBASE-21405](https://issues.apache.org/jira/browse/HBASE-21405) | [DOC] Add Details about Output of "status 'replication'" | Minor | documentation, Replication |
+| [HBASE-24478](https://issues.apache.org/jira/browse/HBASE-24478) | The regionInfo parameter for MasterProcedureScheduler#waitRegions and MasterProcedureScheduler#wakeRegions should be plural | Minor | proc-v2 |
+| [HBASE-24524](https://issues.apache.org/jira/browse/HBASE-24524) | SyncTable logging improvements | Minor | . |
+| [HBASE-24441](https://issues.apache.org/jira/browse/HBASE-24441) | CacheConfig details logged at Store open is not really useful | Minor | logging, regionserver |
+| [HBASE-24468](https://issues.apache.org/jira/browse/HBASE-24468) | Add region info when log meessages in HStore. | Minor | logging, regionserver |
+| [HBASE-24483](https://issues.apache.org/jira/browse/HBASE-24483) | Add repeated prefix logging for MultipleColumnPrefixFilter | Minor | Filters |
+| [HBASE-24359](https://issues.apache.org/jira/browse/HBASE-24359) | Optionally ignore edits for deleted CFs for replication. | Major | Replication |
+| [HBASE-24504](https://issues.apache.org/jira/browse/HBASE-24504) | refactor call setupCluster/tearDownCluster in TestTableSnapshotInputFormat | Minor | mapreduce, test |
+| [HBASE-24412](https://issues.apache.org/jira/browse/HBASE-24412) | Canary support check only one column family per RegionTask | Major | canary |
+| [HBASE-21406](https://issues.apache.org/jira/browse/HBASE-21406) | "status 'replication'" should not show SINK if the cluster does not act as sink | Minor | . |
+| [HBASE-24474](https://issues.apache.org/jira/browse/HBASE-24474) | Rename LocalRegion to MasterRegion | Blocker | master |
+| [HBASE-24455](https://issues.apache.org/jira/browse/HBASE-24455) | Correct the doc of "On the number of column families" | Minor | documentation |
+| [HBASE-24475](https://issues.apache.org/jira/browse/HBASE-24475) | Clean up the master thread name getting in SplitLogManager and AssignmentManager | Minor | . |
+| [HBASE-24132](https://issues.apache.org/jira/browse/HBASE-24132) | Upgrade to Apache ZooKeeper 3.5.7 | Major | . |
+| [HBASE-24470](https://issues.apache.org/jira/browse/HBASE-24470) | Add store file info when log meessages in HStore. | Minor | logging, regionserver |
+| [HBASE-24451](https://issues.apache.org/jira/browse/HBASE-24451) | Remove the HasThread because the related bug had been fixed since jdk7 | Major | util |
+| [HBASE-24416](https://issues.apache.org/jira/browse/HBASE-24416) | RegionNormalizer spliting region should not be limited by hbase.normalizer.min.region.count | Major | . |
+| [HBASE-24428](https://issues.apache.org/jira/browse/HBASE-24428) | Priority compaction for recently split daughter regions | Major | Compaction |
+| [HBASE-24371](https://issues.apache.org/jira/browse/HBASE-24371) | Add more details when print CompactionConfiguration info | Minor | regionserver |
+| [HBASE-24423](https://issues.apache.org/jira/browse/HBASE-24423) | No need to get lock in canSplit because hasReferences will get lock too | Minor | regionserver |
+| [HBASE-24369](https://issues.apache.org/jira/browse/HBASE-24369) | Provide more information about merged child regions in Hbck Overlaps section, which cannot be fixed immediately | Major | master |
+| [HBASE-24427](https://issues.apache.org/jira/browse/HBASE-24427) | HStore.add log format error | Minor | . |
+| [HBASE-24387](https://issues.apache.org/jira/browse/HBASE-24387) | TableSnapshotInputFormatImpl support row limit on each InputSplit | Major | mapreduce |
+| [HBASE-21996](https://issues.apache.org/jira/browse/HBASE-21996) | Set locale for javadoc | Major | documentation |
+| [HBASE-24386](https://issues.apache.org/jira/browse/HBASE-24386) | TableSnapshotScanner support scan limit | Major | Scanners, snapshots |
+| [HBASE-24164](https://issues.apache.org/jira/browse/HBASE-24164) | Retain the ReadRequests and WriteRequests of region on web UI after alter table | Major | metrics |
+| [HBASE-23969](https://issues.apache.org/jira/browse/HBASE-23969) | Meta browser should show all \`info\` columns | Minor | master, UI |
+| [HBASE-24256](https://issues.apache.org/jira/browse/HBASE-24256) | When fixOverlap hits the max region limit, it is possible to include the same region in multiple merge request | Major | hbck2 |
+| [HBASE-24355](https://issues.apache.org/jira/browse/HBASE-24355) | Fix typos in the HStore#compact annotation | Minor | . |
+| [HBASE-24321](https://issues.apache.org/jira/browse/HBASE-24321) | Add writable MinVersions and read-only Scan to coproc ScanOptions | Major | . |
+| [HBASE-24345](https://issues.apache.org/jira/browse/HBASE-24345) | [ACL] renameRSGroup should require Admin level permission | Major | acl, rsgroup |
+| [HBASE-24328](https://issues.apache.org/jira/browse/HBASE-24328) | skip duplicate GCMultipleMergedRegionsProcedure while previous finished | Major | . |
+| [HBASE-24335](https://issues.apache.org/jira/browse/HBASE-24335) | Support deleteall with ts but without column in shell mode | Major | shell |
+| [HBASE-24304](https://issues.apache.org/jira/browse/HBASE-24304) | Separate a hbase-asyncfs module | Major | build, pom |
+| [HBASE-24302](https://issues.apache.org/jira/browse/HBASE-24302) | Add an "ignoreTimestamps" option (defaulted to false) to HashTable/SyncTable tool | Major | . |
+| [HBASE-24199](https://issues.apache.org/jira/browse/HBASE-24199) | Procedure related metrics is not consumed in the JMX metric | Minor | metrics |
+| [HBASE-24252](https://issues.apache.org/jira/browse/HBASE-24252) | Implement proxyuser/doAs mechanism for hbase-http | Major | security, UI |
+| [HBASE-23264](https://issues.apache.org/jira/browse/HBASE-23264) | Resolve a TODO of BucketAllocator: "Why we add the extra 1024 bytes? Slop?" | Minor | BucketCache |
+| [HBASE-24024](https://issues.apache.org/jira/browse/HBASE-24024) | Optionally reject multi() requests with very high no of rows | Major | . |
+| [HBASE-24222](https://issues.apache.org/jira/browse/HBASE-24222) | remove FSUtils.checkAccess and replace with FileSystem.access in HBCK | Major | Filesystem Integration |
+| [HBASE-24139](https://issues.apache.org/jira/browse/HBASE-24139) | Balancer should avoid leaving idle region servers | Critical | Balancer, Operability |
+| [HBASE-24196](https://issues.apache.org/jira/browse/HBASE-24196) | [Shell] Add rename rsgroup command in hbase shell | Major | rsgroup, shell |
+| [HBASE-24166](https://issues.apache.org/jira/browse/HBASE-24166) | Duplicate implementation for acquireLock between CreateTableProcedure and its parent class | Minor | proc-v2 |
+| [HBASE-24182](https://issues.apache.org/jira/browse/HBASE-24182) | log when the region is set to closing status | Minor | . |
+| [HBASE-24148](https://issues.apache.org/jira/browse/HBASE-24148) | Upgrade Thrift to 0.13.0: 0.12.0 has outstanding CVEs. | Major | Thrift |
+| [HBASE-24195](https://issues.apache.org/jira/browse/HBASE-24195) | Admin.getRegionServers() should return live servers excluding decom RS optionally | Major | . |
+| [HBASE-24112](https://issues.apache.org/jira/browse/HBASE-24112) | [RSGroup] Support renaming rsgroup | Major | rsgroup |
+| [HBASE-23994](https://issues.apache.org/jira/browse/HBASE-23994) | Add WebUI to Canary | Trivial | canary, UI, Usability |
+| [HBASE-24181](https://issues.apache.org/jira/browse/HBASE-24181) | Add region info when log meessages in HRegion. | Minor | regionserver |
+| [HBASE-24099](https://issues.apache.org/jira/browse/HBASE-24099) | Use a fair ReentrantReadWriteLock for the region close lock | Major | . |
+| [HBASE-24055](https://issues.apache.org/jira/browse/HBASE-24055) | Make AsyncFSWAL can run on EC cluster | Major | wal |
+| [HBASE-24077](https://issues.apache.org/jira/browse/HBASE-24077) | When encounter RowTooBigException, log the row info. | Minor | . |
+| [HBASE-24111](https://issues.apache.org/jira/browse/HBASE-24111) | Enable CompactionTool executions on non-HDFS filesystems | Major | Compaction, mapreduce, tooling |
+| [HBASE-24021](https://issues.apache.org/jira/browse/HBASE-24021) | Fail fast when bulkLoadHFiles method catch some IOException | Major | HFile, regionserver |
+| [HBASE-23678](https://issues.apache.org/jira/browse/HBASE-23678) | Literate builder API for version management in schema | Major | . |
+| [HBASE-8868](https://issues.apache.org/jira/browse/HBASE-8868) | add metric to report client shortcircuit reads | Minor | metrics, regionserver |
+| [HBASE-24032](https://issues.apache.org/jira/browse/HBASE-24032) | [RSGroup] Assign created tables to respective rsgroup automatically instead of manual operations | Major | master, rsgroup |
+| [HBASE-23967](https://issues.apache.org/jira/browse/HBASE-23967) | Improve the accuracy of the method sizeToString | Minor | . |
+| [HBASE-23930](https://issues.apache.org/jira/browse/HBASE-23930) | Shell should attempt to format \`timestamp\` attributes as ISO-8601 | Minor | shell, Usability |
+| [HBASE-23929](https://issues.apache.org/jira/browse/HBASE-23929) | Shell formatter for for meta table should pretty-print values of info:merge columns | Minor | shell, Usability |
+| [HBASE-23932](https://issues.apache.org/jira/browse/HBASE-23932) | Minor improvements to Region Normalizer | Minor | hbck2, master |
+| [HBASE-23939](https://issues.apache.org/jira/browse/HBASE-23939) | Remove unused variables from HBaseSaslRpcServer | Trivial | . |
+| [HBASE-22827](https://issues.apache.org/jira/browse/HBASE-22827) | Expose multi-region merge in shell and Admin API | Major | Admin, shell |
+| [HBASE-23864](https://issues.apache.org/jira/browse/HBASE-23864) | No need to submit SplitTableRegionProcedure/MergeTableRegionsProcedure when split/merge is disabled | Major | . |
+| [HBASE-23859](https://issues.apache.org/jira/browse/HBASE-23859) | Modify "Block locality" of RegionServer Web UI to human readable percentage | Trivial | . |
+| [HBASE-23855](https://issues.apache.org/jira/browse/HBASE-23855) | Change bytes size to human readable size for Server Metrics of RegionServer Web UI | Trivial | . |
+| [HBASE-23802](https://issues.apache.org/jira/browse/HBASE-23802) | Remove unnecessary Configuration instantiation in LossyAccounting | Minor | metrics |
+| [HBASE-23822](https://issues.apache.org/jira/browse/HBASE-23822) | Fix typo in procedures.jsp | Trivial | website |
+| [HBASE-23621](https://issues.apache.org/jira/browse/HBASE-23621) | Reduce number of Checkstyle violations in tests of hbase-common | Minor | . |
+| [HBASE-23069](https://issues.apache.org/jira/browse/HBASE-23069) | periodic dependency bump for Sep 2019 | Critical | dependencies |
+| [HBASE-23686](https://issues.apache.org/jira/browse/HBASE-23686) | Revert binary incompatible change and remove reflection | Major | . |
+| [HBASE-23683](https://issues.apache.org/jira/browse/HBASE-23683) | Make HBaseInterClusterReplicationEndpoint more extensible | Major | Replication |
+| [HBASE-23627](https://issues.apache.org/jira/browse/HBASE-23627) | Resolve remaining Checkstyle violations in hbase-thrift | Minor | Thrift |
+| [HBASE-23623](https://issues.apache.org/jira/browse/HBASE-23623) | Reduce number of Checkstyle violations in hbase-rest | Minor | REST |
+| [HBASE-23645](https://issues.apache.org/jira/browse/HBASE-23645) | Fix remaining Checkstyle violations in tests of hbase-common | Minor | . |
+| [HBASE-23347](https://issues.apache.org/jira/browse/HBASE-23347) | Pluggable RPC authentication | Major | rpc, security |
+| [HBASE-23646](https://issues.apache.org/jira/browse/HBASE-23646) | Fix remaining Checkstyle violations in tests of hbase-rest | Minor | . |
+| [HBASE-23622](https://issues.apache.org/jira/browse/HBASE-23622) | Reduce number of Checkstyle violations in hbase-common | Minor | . |
+| [HBASE-23626](https://issues.apache.org/jira/browse/HBASE-23626) | Reduce number of Checkstyle violations in tests of hbase-common | Minor | . |
+| [HBASE-23675](https://issues.apache.org/jira/browse/HBASE-23675) | Move to Apache parent POM version 22 | Minor | dependencies |
+| [HBASE-23674](https://issues.apache.org/jira/browse/HBASE-23674) | Too many rit page Numbers show confusion | Trivial | master |
+| [HBASE-23383](https://issues.apache.org/jira/browse/HBASE-23383) | [hbck2] \`fixHoles\` should queue assignment procedures for any regions its fixing | Minor | hbck2, master, Region Assignment |
+| [HBASE-23286](https://issues.apache.org/jira/browse/HBASE-23286) | Improve MTTR: Split WAL to HFile | Major | MTTR |
+| [HBASE-23635](https://issues.apache.org/jira/browse/HBASE-23635) | Reduce number of Checkstyle violations in hbase-mapreduce | Minor | mapreduce |
+| [HBASE-23619](https://issues.apache.org/jira/browse/HBASE-23619) | Use built-in formatting for logging in hbase-zookeeper | Trivial | Zookeeper |
+| [HBASE-23165](https://issues.apache.org/jira/browse/HBASE-23165) | [hbtop] Some modifications from HBASE-22988 | Minor | . |
+| [HBASE-23668](https://issues.apache.org/jira/browse/HBASE-23668) | Master log start filling with "Flush journal status" messages | Major | proc-v2, RegionProcedureStore |
+| [HBASE-23654](https://issues.apache.org/jira/browse/HBASE-23654) | Please add Apache Trafodion and EsgynDB to "Powered by Apache HBase" page | Major | documentation |
+| [HBASE-23651](https://issues.apache.org/jira/browse/HBASE-23651) | Region balance throttling can be disabled | Major | . |
+| [HBASE-23333](https://issues.apache.org/jira/browse/HBASE-23333) | Include simple Call.toShortString() in sendCall exceptions | Minor | Client, Operability |
+| [HBASE-23629](https://issues.apache.org/jira/browse/HBASE-23629) | Addition to Supporting projects page | Minor | . |
+| [HBASE-23632](https://issues.apache.org/jira/browse/HBASE-23632) | DeadServer cleanup | Minor | . |
+| [HBASE-23624](https://issues.apache.org/jira/browse/HBASE-23624) | Add a tool to dump the procedure info in HFile | Major | proc-v2 |
+| [HBASE-23615](https://issues.apache.org/jira/browse/HBASE-23615) | Use a dedicated thread for executing WorkerMonitor in ProcedureExecutor. | Major | amv2 |
+| [HBASE-23618](https://issues.apache.org/jira/browse/HBASE-23618) | Add a tool to dump procedure info in the WAL file | Major | proc-v2 |
+| [HBASE-23617](https://issues.apache.org/jira/browse/HBASE-23617) | Add a stress test tool for region based procedure store | Major | proc-v2 |
+| [HBASE-23238](https://issues.apache.org/jira/browse/HBASE-23238) | Additional test and checks for null references on ScannerCallableWithReplicas | Minor | . |
+| [HBASE-23613](https://issues.apache.org/jira/browse/HBASE-23613) | ProcedureExecutor check StuckWorkers blocked by DeadServerMetricRegionChore | Major | . |
+| [HBASE-23326](https://issues.apache.org/jira/browse/HBASE-23326) | Implement a ProcedureStore which stores procedures in a HRegion | Critical | proc-v2 |
+| [HBASE-23065](https://issues.apache.org/jira/browse/HBASE-23065) | [hbtop] Top-N heavy hitter user and client drill downs | Major | hbtop, Operability |
+| [HBASE-23066](https://issues.apache.org/jira/browse/HBASE-23066) | Create a config that forces to cache blocks on compaction | Minor | Compaction, regionserver |
+| [HBASE-23239](https://issues.apache.org/jira/browse/HBASE-23239) | Reporting on status of backing MOB files from client-facing cells | Major | mapreduce, mob, Operability |
+| [HBASE-23549](https://issues.apache.org/jira/browse/HBASE-23549) | Document steps to disable MOB for a column family | Minor | documentation, mob |
+| [HBASE-23380](https://issues.apache.org/jira/browse/HBASE-23380) | General Cleanup of FSUtil | Minor | Filesystem Integration |
+| [HBASE-23379](https://issues.apache.org/jira/browse/HBASE-23379) | Clean Up FSUtil getRegionLocalityMappingFromFS | Minor | . |
+| [HBASE-23377](https://issues.apache.org/jira/browse/HBASE-23377) | Balancer should skip disabled tables's regions | Major | Balancer |
+| [HBASE-23373](https://issues.apache.org/jira/browse/HBASE-23373) | Log \`RetriesExhaustedException\` context with full time precision | Minor | asyncclient, Client |
+| [HBASE-23303](https://issues.apache.org/jira/browse/HBASE-23303) | Add security headers to REST server/info page | Major | REST |
+| [HBASE-23361](https://issues.apache.org/jira/browse/HBASE-23361) | [UI] Limit two decimals even for total average load | Minor | UI |
+| [HBASE-23365](https://issues.apache.org/jira/browse/HBASE-23365) | Minor change MemStoreFlusher's log | Trivial | . |
+| [HBASE-23362](https://issues.apache.org/jira/browse/HBASE-23362) | WalPrettyPrinter should include the table name | Minor | tooling |
+| [HBASE-23352](https://issues.apache.org/jira/browse/HBASE-23352) | Allow chaos monkeys to access cmd line params, and improve FillDiskCommandAction | Minor | integration tests |
+| [HBASE-20395](https://issues.apache.org/jira/browse/HBASE-20395) | Displaying thrift server type on the thrift page | Major | Thrift |
+| [HBASE-23293](https://issues.apache.org/jira/browse/HBASE-23293) | [REPLICATION] make ship edits timeout configurable | Minor | Replication |
+| [HBASE-23334](https://issues.apache.org/jira/browse/HBASE-23334) | The table-lock node of zk is not needed since HBASE-16786 | Minor | . |
+| [HBASE-23325](https://issues.apache.org/jira/browse/HBASE-23325) | [UI]rsgoup average load keep two decimals | Minor | . |
+| [HBASE-23321](https://issues.apache.org/jira/browse/HBASE-23321) | [hbck2] fixHoles of fixMeta doesn't update in-memory state | Minor | hbck2 |
+| [HBASE-23308](https://issues.apache.org/jira/browse/HBASE-23308) | Review of NullPointerExceptions | Minor | . |
+| [HBASE-23315](https://issues.apache.org/jira/browse/HBASE-23315) | Miscellaneous HBCK Report page cleanup | Minor | . |
+| [HBASE-23278](https://issues.apache.org/jira/browse/HBASE-23278) | Add a table-level compaction progress display on the UI | Minor | UI |
+| [HBASE-19450](https://issues.apache.org/jira/browse/HBASE-19450) | Add log about average execution time for ScheduledChore | Minor | Operability |
+| [HBASE-23283](https://issues.apache.org/jira/browse/HBASE-23283) | Provide clear and consistent logging about the period of enabled chores | Minor | Operability |
+| [HBASE-23245](https://issues.apache.org/jira/browse/HBASE-23245) | All MutableHistogram implementations should remove maxExpected | Major | metrics |
+| [HBASE-23251](https://issues.apache.org/jira/browse/HBASE-23251) | Add Column Family and Table Names to HFileContext and use in HFileWriterImpl logging | Major | . |
+| [HBASE-23228](https://issues.apache.org/jira/browse/HBASE-23228) | Allow for jdk8 specific modules on branch-1 in precommit/nightly testing | Critical | build, test |
+| [HBASE-23212](https://issues.apache.org/jira/browse/HBASE-23212) | Provide config reload for Auto Region Reopen based on storeFile ref count | Major | . |
+| [HBASE-23082](https://issues.apache.org/jira/browse/HBASE-23082) | Backport low-latency snapshot tracking for space quotas to 2.x | Major | Quotas |
+| [HBASE-23221](https://issues.apache.org/jira/browse/HBASE-23221) | Polish the WAL interface after HBASE-23181 | Major | regionserver, wal |
+| [HBASE-23191](https://issues.apache.org/jira/browse/HBASE-23191) | Log spams on Replication | Trivial | Replication |
+| [HBASE-23208](https://issues.apache.org/jira/browse/HBASE-23208) | Unit formatting in Master & RS UI | Trivial | UI |
+| [HBASE-23207](https://issues.apache.org/jira/browse/HBASE-23207) | Log a region open journal | Minor | . |
+| [HBASE-23172](https://issues.apache.org/jira/browse/HBASE-23172) | HBase Canary region success count metrics reflect column family successes, not region successes | Minor | canary |
+| [HBASE-23170](https://issues.apache.org/jira/browse/HBASE-23170) | Admin#getRegionServers use ClusterMetrics.Option.SERVERS\_NAME | Major | . |
+| [HBASE-23107](https://issues.apache.org/jira/browse/HBASE-23107) | Avoid temp byte array creation when doing cacheDataOnWrite | Major | BlockCache, HFile |
+| [HBASE-20626](https://issues.apache.org/jira/browse/HBASE-20626) | Change the value of "Requests Per Second" on WEBUI | Major | metrics, UI |
+| [HBASE-23093](https://issues.apache.org/jira/browse/HBASE-23093) | Avoid Optional Anti-Pattern where possible | Minor | . |
+| [HBASE-23083](https://issues.apache.org/jira/browse/HBASE-23083) | Collect Executor status info periodically and report to metrics system | Major | . |
+| [HBASE-23017](https://issues.apache.org/jira/browse/HBASE-23017) | [Forward-port] Verify the file integrity in persistent IOEngine | Major | BucketCache |
+| [HBASE-23114](https://issues.apache.org/jira/browse/HBASE-23114) | Use archiveArtifacts in Jenkinsfiles | Trivial | . |
+| [HBASE-23140](https://issues.apache.org/jira/browse/HBASE-23140) | Remove unknown table error | Minor | . |
+| [HBASE-23095](https://issues.apache.org/jira/browse/HBASE-23095) | Reuse FileStatus in StoreFileInfo | Major | mob, snapshots |
+| [HBASE-23116](https://issues.apache.org/jira/browse/HBASE-23116) | LoadBalancer should log table name when balancing per table | Minor | . |
+| [HBASE-22874](https://issues.apache.org/jira/browse/HBASE-22874) | Define a public interface for Canary and move existing implementation to LimitedPrivate | Critical | canary |
+| [HBASE-22930](https://issues.apache.org/jira/browse/HBASE-22930) | Set unique name to longCompactions/shortCompactions threads | Minor | . |
+| [HBASE-23035](https://issues.apache.org/jira/browse/HBASE-23035) | Retain region to the last RegionServer make the failover slower | Major | . |
+| [HBASE-23038](https://issues.apache.org/jira/browse/HBASE-23038) | Provide consistent and clear logging about disabling chores | Minor | master, regionserver |
+| [HBASE-23075](https://issues.apache.org/jira/browse/HBASE-23075) | Upgrade jackson to version 2.9.10 due to CVE-2019-16335 and CVE-2019-14540 | Major | dependencies, hbase-connectors, REST, security |
+| [HBASE-23058](https://issues.apache.org/jira/browse/HBASE-23058) | Should be "Column Family Name" in table.jsp | Minor | . |
+| [HBASE-22027](https://issues.apache.org/jira/browse/HBASE-22027) | Move non-MR parts of TokenUtil into hbase-client | Major | . |
+| [HBASE-23049](https://issues.apache.org/jira/browse/HBASE-23049) | TableDescriptors#getAll should return the tables ordering by the name which contain namespace | Minor | . |
+| [HBASE-23041](https://issues.apache.org/jira/browse/HBASE-23041) | Should not show split parent regions in HBCK report's unknown server part | Major | . |
+| [HBASE-23044](https://issues.apache.org/jira/browse/HBASE-23044) | CatalogJanitor#cleanMergeQualifier may clean wrong parent regions | Critical | . |
+| [HBASE-23037](https://issues.apache.org/jira/browse/HBASE-23037) | Make the split WAL related log more readable | Minor | . |
+| [HBASE-22846](https://issues.apache.org/jira/browse/HBASE-22846) | Internal Error 500 when Using HBASE REST API to Create Namespace. | Major | hbase-connectors |
+| [HBASE-22804](https://issues.apache.org/jira/browse/HBASE-22804) | Provide an API to get list of successful regions and total expected regions in Canary | Minor | canary |
+| [HBASE-22899](https://issues.apache.org/jira/browse/HBASE-22899) | logging improvements for snapshot operations w/large manifests | Minor | snapshots |
+| [HBASE-22760](https://issues.apache.org/jira/browse/HBASE-22760) | Stop/Resume Snapshot Auto-Cleanup activity with shell command | Major | Admin, shell, snapshots |
+| [HBASE-22802](https://issues.apache.org/jira/browse/HBASE-22802) | Avoid temp ByteBuffer allocation in FileIOEngine#read | Major | BucketCache |
+| [HBASE-22701](https://issues.apache.org/jira/browse/HBASE-22701) | Better handle invalid local directory for DynamicClassLoader | Major | regionserver |
+| [HBASE-21879](https://issues.apache.org/jira/browse/HBASE-21879) | Read HFile's block to ByteBuffer directly instead of to byte for reducing young gc purpose | Major | . |
+| [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-22618](https://issues.apache.org/jira/browse/HBASE-22618) | added the possibility to load custom cost functions | Major | . |
+| [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-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-22543](https://issues.apache.org/jira/browse/HBASE-22543) | Revisit HBASE-21207 to make all values fully sortable | Minor | master, monitoring, Operability, UI, Usability |
+| [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-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-22790](https://issues.apache.org/jira/browse/HBASE-22790) | Add deprecation version for hbase.ipc.server.reservoir.initial.buffer.size & hbase.ipc.server.reservoir.initial.max | Trivial | . |
+| [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-22707](https://issues.apache.org/jira/browse/HBASE-22707) | [HBCK2] MasterRpcServices assigns method should try to reload regions from meta if the passed regions isn't found under AssignmentManager RegionsStateStore | Major | hbck2, master |
+| [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-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-22690](https://issues.apache.org/jira/browse/HBASE-22690) | Deprecate / Remove OfflineMetaRepair in hbase-2+ | Major | hbck2 |
+| [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-7129](https://issues.apache.org/jira/browse/HBASE-7129) | Need documentation for REST atomic operations (HBASE-4720) | Minor | documentation, REST |
+| [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 | . |
[... 8009 lines stripped ...]