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Posted to commits@hbase.apache.org by ap...@apache.org on 2023/05/27 05:02:37 UTC

svn commit: r62170 [2/4] - /dev/hbase/2.5.5RC0/

Added: dev/hbase/2.5.5RC0/CHANGES.md
==============================================================================
--- dev/hbase/2.5.5RC0/CHANGES.md (added)
+++ dev/hbase/2.5.5RC0/CHANGES.md Sat May 27 05:02:37 2023
@@ -0,0 +1,8315 @@
+
+<!---
+# 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.
+-->
+# HBASE Changelog
+
+## Release 2.5.5 - Unreleased (as of 2023-05-27)
+
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27876](https://issues.apache.org/jira/browse/HBASE-27876) | Only generate SBOM when releasing |  Minor | build, pom |
+| [HBASE-27848](https://issues.apache.org/jira/browse/HBASE-27848) | Should fast-fail if unmatched column family exists when using ImportTsv |  Major | mapreduce |
+| [HBASE-27870](https://issues.apache.org/jira/browse/HBASE-27870) | Eliminate the 'WARNING: package jdk.internal.util.random not in java.base' when running UTs with jdk11 |  Major | build, pom, test |
+| [HBASE-27858](https://issues.apache.org/jira/browse/HBASE-27858) | Update surefire version to 3.0.0 and use the SurefireForkNodeFactory |  Minor | test |
+| [HBASE-27844](https://issues.apache.org/jira/browse/HBASE-27844) | changed type names to avoid conflicts with built-in types |  Minor | build |
+| [HBASE-27838](https://issues.apache.org/jira/browse/HBASE-27838) | Update zstd-jni from version 1.5.4-2 -\> 1.5.5-2 |  Minor | io |
+| [HBASE-27799](https://issues.apache.org/jira/browse/HBASE-27799) | RpcThrottlingException wait interval message is misleading between 0-1s |  Major | . |
+| [HBASE-27821](https://issues.apache.org/jira/browse/HBASE-27821) | Split TestFuzzyRowFilterEndToEnd |  Major | test |
+| [HBASE-27792](https://issues.apache.org/jira/browse/HBASE-27792) | Guard Master/RS Dump Servlet behind admin walls |  Minor | security, UI |
+| [HBASE-27819](https://issues.apache.org/jira/browse/HBASE-27819) | 10k RpcServer.MAX\_REQUEST\_SIZE is not enough in ReplicationDroppedTable related tests |  Major | test |
+| [HBASE-27808](https://issues.apache.org/jira/browse/HBASE-27808) | Change flatten mode for oss in our pom file |  Major | community, pom |
+| [HBASE-27818](https://issues.apache.org/jira/browse/HBASE-27818) | Split TestReplicationDroppedTables |  Major | Replication, test |
+| [HBASE-27789](https://issues.apache.org/jira/browse/HBASE-27789) | Backport "HBASE-24914 Remove duplicate code appearing continuously in method ReplicationPeerManager.updatePeerConfig" to branch-2 |  Minor | Replication |
+| [HBASE-27422](https://issues.apache.org/jira/browse/HBASE-27422) | Support replication for hbase:acl |  Major | acl, Replication |
+| [HBASE-27713](https://issues.apache.org/jira/browse/HBASE-27713) | Remove numRegions in Region Metrics |  Major | metrics |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27872](https://issues.apache.org/jira/browse/HBASE-27872) | xerial's snappy-java requires GLIBC \>= 2.32 |  Minor | . |
+| [HBASE-27867](https://issues.apache.org/jira/browse/HBASE-27867) | Close the L1 victim handler race |  Minor | BlockCache |
+| [HBASE-27277](https://issues.apache.org/jira/browse/HBASE-27277) | TestRaceBetweenSCPAndTRSP fails in pre commit |  Major | proc-v2, test |
+| [HBASE-27874](https://issues.apache.org/jira/browse/HBASE-27874) | Problem in flakey generated report causes pre-commit run to fail |  Major | build |
+| [HBASE-27865](https://issues.apache.org/jira/browse/HBASE-27865) | TestThriftServerCmdLine fails with org.apache.hadoop.hbase.SystemExitRule$SystemExitInTestException |  Major | test, Thrift |
+| [HBASE-27860](https://issues.apache.org/jira/browse/HBASE-27860) | Fix build error against Hadoop 3.3.5 |  Major | build, hadoop3 |
+| [HBASE-27857](https://issues.apache.org/jira/browse/HBASE-27857) | HBaseClassTestRule: system exit not restored if test times out may cause test to hang |  Minor | test |
+| [HBASE-26646](https://issues.apache.org/jira/browse/HBASE-26646) | WALPlayer should obtain token from filesystem |  Minor | . |
+| [HBASE-27824](https://issues.apache.org/jira/browse/HBASE-27824) | NPE in MetricsMasterWrapperImpl.isRunning |  Major | test |
+| [HBASE-27823](https://issues.apache.org/jira/browse/HBASE-27823) | NPE in ClaimReplicationQueuesProcedure when running TestAssignmentManager.testAssignSocketTimeout |  Major | test |
+| [HBASE-27822](https://issues.apache.org/jira/browse/HBASE-27822) | TestFromClientSide5.testAppendWithoutWAL is flaky |  Major | scan, test |
+| [HBASE-27810](https://issues.apache.org/jira/browse/HBASE-27810) | HBCK throws RejectedExecutionException when closing ZooKeeper resources |  Major | hbck |
+| [HBASE-27807](https://issues.apache.org/jira/browse/HBASE-27807) | PressureAwareCompactionThroughputController#tune log the opposite of the actual scenario |  Trivial | Compaction |
+| [HBASE-27796](https://issues.apache.org/jira/browse/HBASE-27796) | Improve MemcachedBlockCache |  Major | . |
+| [HBASE-27768](https://issues.apache.org/jira/browse/HBASE-27768) | Race conditions in BlockingRpcConnection |  Major | . |
+| [HBASE-27778](https://issues.apache.org/jira/browse/HBASE-27778) | Incorrect  ReplicationSourceWALReader. totalBufferUsed may cause replication hang up |  Major | Replication |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27843](https://issues.apache.org/jira/browse/HBASE-27843) | If moveAndClose fails HFileArchiver should delete any incomplete archive side changes |  Major | . |
+| [HBASE-20804](https://issues.apache.org/jira/browse/HBASE-20804) | Document and add tests for HBaseConfTool |  Major | documentation, tooling |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27880](https://issues.apache.org/jira/browse/HBASE-27880) | Bump requests from 2.28.1 to 2.31.0 in /dev-support/flaky-tests |  Major | dependabot, scripts, security |
+| [HBASE-27634](https://issues.apache.org/jira/browse/HBASE-27634) | Builds emit errors related to SBOM parsing |  Minor | build |
+| [HBASE-27864](https://issues.apache.org/jira/browse/HBASE-27864) | Reduce the Cardinality for TestFuzzyRowFilterEndToEndLarge |  Major | test |
+| [HBASE-27863](https://issues.apache.org/jira/browse/HBASE-27863) | Add hadoop 3.3.5 check in our personality script |  Major | jenkins, scripts |
+| [HBASE-27762](https://issues.apache.org/jira/browse/HBASE-27762) | Include EventType and ProcedureV2 pid in logging via MDC |  Major | . |
+| [HBASE-27791](https://issues.apache.org/jira/browse/HBASE-27791) | Upgrade vega and its related js libraries |  Major | UI |
+| [HBASE-27720](https://issues.apache.org/jira/browse/HBASE-27720) | TestClusterRestartFailover is flakey due to metrics assertion |  Minor | test |
+
+
+## Release 2.5.4 - 2023-04-14
+
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27758](https://issues.apache.org/jira/browse/HBASE-27758) | Inconsistent synchronization in MetricsUserSourceImpl |  Major | . |
+| [HBASE-26526](https://issues.apache.org/jira/browse/HBASE-26526) | Introduce a timeout to shutdown of WAL |  Major | wal |
+| [HBASE-27744](https://issues.apache.org/jira/browse/HBASE-27744) | Update compression dependencies |  Minor | io |
+| [HBASE-27676](https://issues.apache.org/jira/browse/HBASE-27676) | Scan handlers in the RPC executor should match at least one scan queues |  Major | . |
+| [HBASE-27646](https://issues.apache.org/jira/browse/HBASE-27646) | Should not use pread when prefetching in HFilePreadReader |  Minor | Performance |
+| [HBASE-27710](https://issues.apache.org/jira/browse/HBASE-27710) | ByteBuff ref counting is too expensive for on-heap buffers |  Major | . |
+| [HBASE-27672](https://issues.apache.org/jira/browse/HBASE-27672) | Read RPC threads may BLOCKED at the Configuration.get when using java compression |  Minor | . |
+| [HBASE-27670](https://issues.apache.org/jira/browse/HBASE-27670) | Improve FSUtils to directly obtain FSDataOutputStream |  Major | Filesystem Integration |
+| [HBASE-23983](https://issues.apache.org/jira/browse/HBASE-23983) | Spotbugs warning complain on master build |  Major | . |
+| [HBASE-27458](https://issues.apache.org/jira/browse/HBASE-27458) | Use ReadWriteLock for region scanner readpoint map |  Minor | Scanners |
+| [HBASE-23102](https://issues.apache.org/jira/browse/HBASE-23102) | Improper Usage of Map putIfAbsent |  Minor | . |
+| [HBASE-27666](https://issues.apache.org/jira/browse/HBASE-27666) | Allow preCompact hooks to return scanners whose cells can be shipped |  Major | . |
+| [HBASE-27655](https://issues.apache.org/jira/browse/HBASE-27655) | Remove the empty path annotation from ClusterMetricsResource |  Trivial | . |
+| [HBASE-15242](https://issues.apache.org/jira/browse/HBASE-15242) | Client metrics for retries and timeouts |  Major | metrics |
+| [HBASE-21521](https://issues.apache.org/jira/browse/HBASE-21521) | Expose master startup status via web UI |  Major | master, UI |
+| [HBASE-27590](https://issues.apache.org/jira/browse/HBASE-27590) | Change Iterable to List in SnapshotFileCache |  Minor | . |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27704](https://issues.apache.org/jira/browse/HBASE-27704) | Quotas can drastically overflow configured limit |  Major | . |
+| [HBASE-27726](https://issues.apache.org/jira/browse/HBASE-27726) | ruby shell not handled SyntaxError exceptions properly |  Minor | shell |
+| [HBASE-27732](https://issues.apache.org/jira/browse/HBASE-27732) | NPE in TestBasicWALEntryStreamFSHLog.testEOFExceptionInOldWALsDirectory |  Major | Replication |
+| [HBASE-26866](https://issues.apache.org/jira/browse/HBASE-26866) | Shutdown WAL may abort region server |  Major | wal |
+| [HBASE-27684](https://issues.apache.org/jira/browse/HBASE-27684) | Client metrics for user region lock related behaviors. |  Major | Client |
+| [HBASE-27671](https://issues.apache.org/jira/browse/HBASE-27671) | Client should not be able to restore/clone a snapshot after it's TTL has expired |  Minor | . |
+| [HBASE-27651](https://issues.apache.org/jira/browse/HBASE-27651) | hbase-daemon.sh foreground\_start should propagate SIGHUP and SIGTERM |  Minor | scripts |
+| [HBASE-27718](https://issues.apache.org/jira/browse/HBASE-27718) | The regionStateNode only need remove once in regionOffline |  Minor | amv2 |
+| [HBASE-27729](https://issues.apache.org/jira/browse/HBASE-27729) | Missed one parameter when logging exception in StoreFileListFile |  Major | logging |
+| [HBASE-27708](https://issues.apache.org/jira/browse/HBASE-27708) | CPU hot-spot resolving User subject |  Major | Client, tracing |
+| [HBASE-27652](https://issues.apache.org/jira/browse/HBASE-27652) | Client-side lock contention around Configuration when using read replica regions |  Major | Client, read replicas |
+| [HBASE-27714](https://issues.apache.org/jira/browse/HBASE-27714) | WALEntryStreamTestBase creates a new HBTU in startCluster method which causes all sub classes are testing default configurations |  Major | Replication, test |
+| [HBASE-27688](https://issues.apache.org/jira/browse/HBASE-27688) | HFile splitting occurs during bulkload, the CREATE\_TIME\_TS of hfileinfo is 0 |  Major | HFile |
+| [HBASE-27250](https://issues.apache.org/jira/browse/HBASE-27250) | MasterRpcService#setRegionStateInMeta does not support replica region encodedNames or region names |  Minor | . |
+| [HBASE-23561](https://issues.apache.org/jira/browse/HBASE-23561) | Look up of Region in Master by encoded region name is O(n) |  Trivial | . |
+| [HBASE-24781](https://issues.apache.org/jira/browse/HBASE-24781) | Clean up peer metrics when disabling peer |  Major | Replication |
+| [HBASE-27650](https://issues.apache.org/jira/browse/HBASE-27650) | Merging empty regions corrupts meta cache |  Major | . |
+| [HBASE-27668](https://issues.apache.org/jira/browse/HBASE-27668) | PB's parseDelimitedFrom can successfully return when there are not enough bytes |  Critical | Protobufs, wal |
+| [HBASE-27644](https://issues.apache.org/jira/browse/HBASE-27644) | Should not return false when WALKey has no following KVs while reading WAL file |  Critical | dataloss, wal |
+| [HBASE-27649](https://issues.apache.org/jira/browse/HBASE-27649) | WALPlayer does not properly dedupe overridden cell versions |  Major | . |
+| [HBASE-27661](https://issues.apache.org/jira/browse/HBASE-27661) | Set size of systable queue in UT |  Major | . |
+| [HBASE-27654](https://issues.apache.org/jira/browse/HBASE-27654) | IndexBlockEncoding is missing in HFileContextBuilder copy constructor |  Major | . |
+| [HBASE-27636](https://issues.apache.org/jira/browse/HBASE-27636) | The "CREATE\_TIME\_TS" value of the hfile generated by the HFileOutputFormat2 class is 0 |  Major | HFile, mapreduce |
+| [HBASE-27648](https://issues.apache.org/jira/browse/HBASE-27648) | CopyOnWriteArrayMap does not honor contract of ConcurrentMap.putIfAbsent |  Major | . |
+| [HBASE-27637](https://issues.apache.org/jira/browse/HBASE-27637) | Zero length value would cause value compressor read nothing and not advance the position of the InputStream |  Critical | dataloss, wal |
+| [HBASE-27602](https://issues.apache.org/jira/browse/HBASE-27602) | Remove the impact of operating env on testHFileCleaning |  Major | test |
+| [HBASE-27621](https://issues.apache.org/jira/browse/HBASE-27621) | Also clear the Dictionary when resetting when reading compressed WAL file |  Critical | Replication, wal |
+| [HBASE-27628](https://issues.apache.org/jira/browse/HBASE-27628) | Spotless fix in RELEASENOTES.md |  Trivial | . |
+| [HBASE-27619](https://issues.apache.org/jira/browse/HBASE-27619) | Bulkload fails when trying to bulkload files with invalid names after HBASE-26707 |  Major | . |
+| [HBASE-27580](https://issues.apache.org/jira/browse/HBASE-27580) | Reverse scan over rows with tags throw exceptions when using DataBlockEncoding |  Major | . |
+| [HBASE-27608](https://issues.apache.org/jira/browse/HBASE-27608) | Use lowercase image reference name in our docker file |  Major | scripts |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27595](https://issues.apache.org/jira/browse/HBASE-27595) | ThreadGroup is removed since Hadoop 3.2.4 |  Minor | . |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27669](https://issues.apache.org/jira/browse/HBASE-27669) | chaos-daemon.sh should make use hbase script start/stop chaosagent and chaos monkey runner. |  Major | . |
+| [HBASE-27643](https://issues.apache.org/jira/browse/HBASE-27643) | [JDK17] Add-opens java.util.concurrent |  Major | java, test |
+| [HBASE-27645](https://issues.apache.org/jira/browse/HBASE-27645) | [JDK17] Use ReflectionUtils#getModifiersField in UT |  Major | java, test |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27736](https://issues.apache.org/jira/browse/HBASE-27736) | HFileSystem.getLocalFs is not used |  Major | HFile |
+| [HBASE-27748](https://issues.apache.org/jira/browse/HBASE-27748) | Bump jettison from 1.5.2 to 1.5.4 |  Major | dependabot, dependencies, security |
+| [HBASE-27741](https://issues.apache.org/jira/browse/HBASE-27741) | Fall back to protoc osx-x86\_64 on Apple Silicon |  Minor | build |
+| [HBASE-27737](https://issues.apache.org/jira/browse/HBASE-27737) | Add supplemental model for com.aayushatharva.brotli4j:native-osx-aarch64 |  Minor | build, community |
+| [HBASE-27685](https://issues.apache.org/jira/browse/HBASE-27685) | Enable code coverage reporting to SonarQube in HBase |  Minor | . |
+| [HBASE-27626](https://issues.apache.org/jira/browse/HBASE-27626) | Suppress noisy logging in client.ConnectionImplementation |  Minor | logging |
+
+
+## Release 2.5.3 - Unreleased (as of 2023-02-01)
+
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27506](https://issues.apache.org/jira/browse/HBASE-27506) | Optionally disable sorting directories by size in CleanerChore |  Minor | . |
+| [HBASE-27503](https://issues.apache.org/jira/browse/HBASE-27503) | Support replace \<FILE-PATH\> in GC\_OPTS for ZGC |  Minor | scripts |
+| [HBASE-27512](https://issues.apache.org/jira/browse/HBASE-27512) | Add file \`.git-blame-ignore-revs\` for \`git blame\` |  Trivial | . |
+| [HBASE-27487](https://issues.apache.org/jira/browse/HBASE-27487) | Slow meta can create pathological feedback loop with multigets |  Major | . |
+| [HBASE-27466](https://issues.apache.org/jira/browse/HBASE-27466) | hbase client metrics per user specified identity on hconnections. |  Major | Client |
+| [HBASE-27490](https://issues.apache.org/jira/browse/HBASE-27490) | Locating regions for all actions of batch requests can exceed operation timeout |  Major | . |
+| [HBASE-22924](https://issues.apache.org/jira/browse/HBASE-22924) | GitHUB PR job should use when clause to filter to just PRs. |  Minor | build, community |
+| [HBASE-27491](https://issues.apache.org/jira/browse/HBASE-27491) | AsyncProcess should not clear meta cache for RejectedExecutionException |  Major | . |
+| [HBASE-27459](https://issues.apache.org/jira/browse/HBASE-27459) | Improve our hbase\_docker to be able to build and start standalone clusters other than master branch |  Major | scripts |
+| [HBASE-27530](https://issues.apache.org/jira/browse/HBASE-27530) | Fix comment syntax errors |  Trivial | documentation |
+| [HBASE-27253](https://issues.apache.org/jira/browse/HBASE-27253) | Make slow log configs updatable with configuration observer |  Major | . |
+| [HBASE-27540](https://issues.apache.org/jira/browse/HBASE-27540) | Client metrics for success/failure counts. |  Major | Client |
+| [HBASE-27233](https://issues.apache.org/jira/browse/HBASE-27233) | Read blocks into off-heap if caching is disabled for read |  Major | . |
+| [HBASE-27531](https://issues.apache.org/jira/browse/HBASE-27531) | AsyncRequestFutureImpl unnecessarily clears meta cache for full server |  Major | . |
+| [HBASE-27565](https://issues.apache.org/jira/browse/HBASE-27565) | Make the initial corePoolSize configurable for ChoreService |  Major | conf |
+| [HBASE-27529](https://issues.apache.org/jira/browse/HBASE-27529) | Provide RS coproc ability to attach WAL extended attributes to mutations at replication sink |  Major | Coprocessors, Replication |
+| [HBASE-27562](https://issues.apache.org/jira/browse/HBASE-27562) | Publish SBOM artifacts |  Major | java |
+| [HBASE-27583](https://issues.apache.org/jira/browse/HBASE-27583) | Remove -X option when building protoc check in nightly and pre commit job |  Major | jenkins, scripts |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27463](https://issues.apache.org/jira/browse/HBASE-27463) | Reset sizeOfLogQueue when refresh replication source |  Minor | Replication |
+| [HBASE-27510](https://issues.apache.org/jira/browse/HBASE-27510) | Should use 'org.apache.hbase.thirdparty.io.netty.tryReflectionSetAccessible' |  Major | . |
+| [HBASE-27484](https://issues.apache.org/jira/browse/HBASE-27484) | FNFE on StoreFileScanner after a flush followed by a compaction |  Major | . |
+| [HBASE-27494](https://issues.apache.org/jira/browse/HBASE-27494) | Client meta cache clear by exception metrics are missing some cases |  Minor | . |
+| [HBASE-27519](https://issues.apache.org/jira/browse/HBASE-27519) | Another case for FNFE on StoreFileScanner after a flush followed by a compaction |  Major | . |
+| [HBASE-27498](https://issues.apache.org/jira/browse/HBASE-27498) | Observed lot of threads blocked in ConnectionImplementation.getKeepAliveMasterService |  Major | Client |
+| [HBASE-27524](https://issues.apache.org/jira/browse/HBASE-27524) | Fix python requirements problem |  Major | scripts, security |
+| [HBASE-27390](https://issues.apache.org/jira/browse/HBASE-27390) | getClusterMetrics NullPointerException when ServerTask status null |  Major | . |
+| [HBASE-27485](https://issues.apache.org/jira/browse/HBASE-27485) | HBaseTestingUtility minicluster requires log4j2 |  Major | test |
+| [HBASE-27566](https://issues.apache.org/jira/browse/HBASE-27566) | Bump gitpython from 3.1.29 to 3.1.30 in /dev-support |  Major | scripts, security |
+| [HBASE-27560](https://issues.apache.org/jira/browse/HBASE-27560) | CatalogJanitor consistencyCheck cannot report the hole on last region if next table is disabled in meta |  Minor | hbck2 |
+| [HBASE-27563](https://issues.apache.org/jira/browse/HBASE-27563) | ChaosMonkey sometimes generates invalid boundaries for random item selection |  Minor | integration tests |
+| [HBASE-27561](https://issues.apache.org/jira/browse/HBASE-27561) | hbase.master.port is ignored in processing of hbase.masters |  Minor | Client |
+| [HBASE-27564](https://issues.apache.org/jira/browse/HBASE-27564) | Add default encryption type for MiniKDC to fix failed tests on JDK11+ |  Major | . |
+| [HBASE-27579](https://issues.apache.org/jira/browse/HBASE-27579) | CatalogJanitor can cause data loss due to errors during cleanMergeRegion |  Blocker | . |
+| [HBASE-27589](https://issues.apache.org/jira/browse/HBASE-27589) | Rename TestConnectionImplementation in hbase-it to fix javadoc failure |  Blocker | Client, documentation |
+| [HBASE-27592](https://issues.apache.org/jira/browse/HBASE-27592) | Update hadoop netty version for hadoop-2.0 profile |  Major | . |
+| [HBASE-27586](https://issues.apache.org/jira/browse/HBASE-27586) | Bump up commons-codec to 1.15 |  Major | dependencies, security |
+| [HBASE-27547](https://issues.apache.org/jira/browse/HBASE-27547) | Close store file readers after region warmup |  Major | regionserver |
+| [HBASE-26967](https://issues.apache.org/jira/browse/HBASE-26967) | FilterList with FuzzyRowFilter and SingleColumnValueFilter evaluated with operator MUST\_PASS\_ONE doesn't work as expected |  Critical | Filters |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27557](https://issues.apache.org/jira/browse/HBASE-27557) | [JDK17] Update shade plugin version |  Minor | . |
+| [HBASE-25516](https://issues.apache.org/jira/browse/HBASE-25516) | [JDK17] reflective access Field.class.getDeclaredField("modifiers") not supported |  Major | Filesystem Integration |
+| [HBASE-27591](https://issues.apache.org/jira/browse/HBASE-27591) | [JDK17] Fix failure TestImmutableScan#testScanCopyConstructor |  Minor | . |
+| [HBASE-27581](https://issues.apache.org/jira/browse/HBASE-27581) | [JDK17] Fix failure TestHBaseTestingUtil#testResolvePortConflict |  Minor | test |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27513](https://issues.apache.org/jira/browse/HBASE-27513) | Modify README.txt to mention how to contribue |  Major | community |
+| [HBASE-27548](https://issues.apache.org/jira/browse/HBASE-27548) | Bump jettison from 1.5.1 to 1.5.2 |  Major | dependabot, dependencies, security |
+| [HBASE-27567](https://issues.apache.org/jira/browse/HBASE-27567) | Introduce ChaosMonkey Action to print HDFS Cluster status |  Minor | integration tests |
+| [HBASE-27568](https://issues.apache.org/jira/browse/HBASE-27568) | ChaosMonkey add support for JournalNodes |  Major | integration tests |
+| [HBASE-27575](https://issues.apache.org/jira/browse/HBASE-27575) | Bump future from 0.18.2 to 0.18.3 in /dev-support |  Minor | . |
+| [HBASE-27578](https://issues.apache.org/jira/browse/HBASE-27578) | Upgrade hbase-thirdparty to 4.1.4 |  Blocker | dependencies, security |
+| [HBASE-27588](https://issues.apache.org/jira/browse/HBASE-27588) | "Instantiating StoreFileTracker impl" INFO level logging is too chatty |  Minor | . |
+
+
+## Release 2.5.2 - Unreleased (as of 2022-11-24)
+
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-26809](https://issues.apache.org/jira/browse/HBASE-26809) | Report client backoff time for server overloaded in ConnectionMetrics |  Major | . |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27434](https://issues.apache.org/jira/browse/HBASE-27434) | Use $revision as placeholder for maven version to make it easier to control the version from command line |  Major | build, pom |
+| [HBASE-27167](https://issues.apache.org/jira/browse/HBASE-27167) | s390x: Skip tests on unsupported compression libs |  Major | build, pom |
+| [HBASE-27450](https://issues.apache.org/jira/browse/HBASE-27450) | Update all our python scripts to use python3 |  Major | scripts |
+| [HBASE-27414](https://issues.apache.org/jira/browse/HBASE-27414) | Search order for locations in  HFileLink |  Minor | Performance |
+| [HBASE-27495](https://issues.apache.org/jira/browse/HBASE-27495) | Improve HFileLinkCleaner to validate back reference links ahead the next traverse |  Major | master |
+| [HBASE-27408](https://issues.apache.org/jira/browse/HBASE-27408) | Improve BucketAllocatorException log to always include HFile name |  Major | . |
+| [HBASE-27496](https://issues.apache.org/jira/browse/HBASE-27496) | Optionally limit the amount of plans executed in the Normalizer |  Minor | Normalizer |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27433](https://issues.apache.org/jira/browse/HBASE-27433) | DefaultMobStoreCompactor should delete MobStoreFile cleanly when compaction is failed |  Major | mob |
+| [HBASE-27440](https://issues.apache.org/jira/browse/HBASE-27440) | metrics method removeHistogramMetrics trigger serious memory leak |  Major | metrics, regionserver |
+| [HBASE-25983](https://issues.apache.org/jira/browse/HBASE-25983) | javadoc generation fails on openjdk-11.0.11+9 |  Major | documentation, pom |
+| [HBASE-27446](https://issues.apache.org/jira/browse/HBASE-27446) | Spotbugs 4.7.2 report a lot of logging errors when generating report |  Major | build, jenkins, scripts |
+| [HBASE-27437](https://issues.apache.org/jira/browse/HBASE-27437) | TestHeapSize is flaky |  Major | test |
+| [HBASE-27472](https://issues.apache.org/jira/browse/HBASE-27472) | The personality script set wrong hadoop2 check version for branch-2 |  Major | jenkins, scripts |
+| [HBASE-27473](https://issues.apache.org/jira/browse/HBASE-27473) | Fix spotbugs warnings in hbase-rest Client.getResponseBody |  Major | REST |
+| [HBASE-27480](https://issues.apache.org/jira/browse/HBASE-27480) | Skip error prone for hadoop2/3 checkes in our nightly jobs |  Major | jenkins, scripts |
+| [HBASE-27469](https://issues.apache.org/jira/browse/HBASE-27469) | IllegalArgumentException is thrown by SnapshotScannerHDFSAclController when dropping a table |  Major | snapshots |
+| [HBASE-27379](https://issues.apache.org/jira/browse/HBASE-27379) | numOpenConnections metric is one less than the actual |  Minor | metrics |
+| [HBASE-27423](https://issues.apache.org/jira/browse/HBASE-27423) | Upgrade hbase-thirdparty to 4.1.3 and upgrade Jackson for CVE-2022-42003/42004 |  Major | security |
+| [HBASE-27464](https://issues.apache.org/jira/browse/HBASE-27464) | In memory compaction 'COMPACT' may cause data corruption when adding cells large than maxAlloc(default 256k) size |  Critical | in-memory-compaction |
+| [HBASE-27501](https://issues.apache.org/jira/browse/HBASE-27501) | The .flattened-pom.xml for some modules are not installed |  Blocker | build, pom |
+| [HBASE-27445](https://issues.apache.org/jira/browse/HBASE-27445) | result of DirectMemoryUtils#getDirectMemorySize may be wrong |  Minor | UI |
+| [HBASE-27504](https://issues.apache.org/jira/browse/HBASE-27504) | Remove duplicated config 'hbase.normalizer.merge.min\_region\_age.days' in hbase-default.xml |  Minor | conf |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27479](https://issues.apache.org/jira/browse/HBASE-27479) | Flaky Test testClone in TestTaskMonitor |  Trivial | test |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27475](https://issues.apache.org/jira/browse/HBASE-27475) | Use different jdks when running hadoopcheck in personality scripts |  Critical | jenkins, scripts |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27425](https://issues.apache.org/jira/browse/HBASE-27425) | Run flaky test job more often |  Minor | test |
+| [HBASE-27460](https://issues.apache.org/jira/browse/HBASE-27460) | Fix the hadolint errors after HBASE-27456 |  Major | scripts |
+| [HBASE-27443](https://issues.apache.org/jira/browse/HBASE-27443) | Use java11 in the general check of our jenkins job |  Major | build, jenkins |
+
+
+## Release 2.5.1 - 2022-10-21
+
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27314](https://issues.apache.org/jira/browse/HBASE-27314) | Make index block be customized and configured |  Major | . |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27159](https://issues.apache.org/jira/browse/HBASE-27159) | Emit source metrics for BlockCacheExpressHitPercent |  Minor | BlockCache, metrics |
+| [HBASE-27339](https://issues.apache.org/jira/browse/HBASE-27339) | Improve sasl connection failure log message to include server |  Minor | Client |
+| [HBASE-27365](https://issues.apache.org/jira/browse/HBASE-27365) | Minimise block addition failures due to no space in bucket cache writers queue by introducing wait time |  Major | BucketCache |
+| [HBASE-27391](https://issues.apache.org/jira/browse/HBASE-27391) | Downgrade ERROR log to DEBUG in ConnectionUtils.updateStats |  Major | . |
+| [HBASE-27370](https://issues.apache.org/jira/browse/HBASE-27370) | Avoid decompressing blocks when reading from bucket cache prefetch threads |  Major | . |
+| [HBASE-27361](https://issues.apache.org/jira/browse/HBASE-27361) | Add .flattened-pom.xml to .gitignore |  Major | build |
+| [HBASE-27224](https://issues.apache.org/jira/browse/HBASE-27224) | HFile tool statistic sampling produces misleading results |  Major | . |
+| [HBASE-27340](https://issues.apache.org/jira/browse/HBASE-27340) | Artifacts with resolved profiles |  Minor | build, pom |
+| [HBASE-27332](https://issues.apache.org/jira/browse/HBASE-27332) | Remove RejectedExecutionHandler for long/short compaction thread pools |  Minor | Compaction |
+| [HBASE-27338](https://issues.apache.org/jira/browse/HBASE-27338) | brotli compression lib tests fail on arm64 |  Minor | . |
+| [HBASE-27320](https://issues.apache.org/jira/browse/HBASE-27320) | hide some sensitive configuration information in the UI |  Minor | security, UI |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27426](https://issues.apache.org/jira/browse/HBASE-27426) | Region server abort with failing to list region servers. |  Major | Zookeeper |
+| [HBASE-27432](https://issues.apache.org/jira/browse/HBASE-27432) | TestUsersOperationsWithSecureHadoop fails affter HBASE-27411 |  Major | . |
+| [HBASE-27420](https://issues.apache.org/jira/browse/HBASE-27420) | Failure while connecting to zk if HBase is running in standalone mode in a container |  Minor | Zookeeper |
+| [HBASE-27424](https://issues.apache.org/jira/browse/HBASE-27424) | Upgrade Jettison for CVE-2022-40149/40150 |  Major | . |
+| [HBASE-27419](https://issues.apache.org/jira/browse/HBASE-27419) | Update to hbase-thirdparty 4.1.2 |  Major | dependencies |
+| [HBASE-27407](https://issues.apache.org/jira/browse/HBASE-27407) | Fixing check for "description" request param in JMXJsonServlet.java |  Minor | metrics |
+| [HBASE-27409](https://issues.apache.org/jira/browse/HBASE-27409) | Fix the javadoc for WARCRecord |  Major | documentation |
+| [HBASE-27381](https://issues.apache.org/jira/browse/HBASE-27381) | Still seeing 'Stuck' in static initialization creating RegionInfo instance |  Major | . |
+| [HBASE-27368](https://issues.apache.org/jira/browse/HBASE-27368) | Do not need to throw IllegalStateException when peer is not active in ReplicationSource.initialize |  Major | regionserver, Replication |
+| [HBASE-27352](https://issues.apache.org/jira/browse/HBASE-27352) | Quoted string argument with spaces passed from command line are propagated wrongly to the underlying java class |  Minor | shell |
+| [HBASE-27362](https://issues.apache.org/jira/browse/HBASE-27362) | Fix some tests hung by CompactSplit.requestCompactionInternal ignoring compactionsEnabled check |  Major | Compaction |
+| [HBASE-27353](https://issues.apache.org/jira/browse/HBASE-27353) | opentelemetry-context jar missing at runtime causes MR jobs to fail |  Minor | . |
+| [HBASE-22939](https://issues.apache.org/jira/browse/HBASE-22939) | SpaceQuotas- Bulkload from different hdfs failed when space quotas are turned on. |  Major | . |
+| [HBASE-27336](https://issues.apache.org/jira/browse/HBASE-27336) | The region visualizer shows 'undefined' region server |  Major | master, UI |
+| [HBASE-27335](https://issues.apache.org/jira/browse/HBASE-27335) | HBase shell hang for a minute when quiting |  Major | shell |
+| [HBASE-27152](https://issues.apache.org/jira/browse/HBASE-27152) | Under compaction mark may leak |  Major | Compaction |
+| [HBASE-25922](https://issues.apache.org/jira/browse/HBASE-25922) | Disabled sanity checks ignored on snapshot restore |  Minor | conf, snapshots |
+| [HBASE-27246](https://issues.apache.org/jira/browse/HBASE-27246) | RSGroupMappingScript#getRSGroup has thread safety problem |  Major | rsgroup |
+| [HBASE-25166](https://issues.apache.org/jira/browse/HBASE-25166) | MobFileCompactionChore is closing the master's shared cluster connection |  Major | master |
+
+
+### TESTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27360](https://issues.apache.org/jira/browse/HBASE-27360) | The trace related assertions are flaky for async client tests |  Major | test, tracing |
+
+
+### SUB-TASKS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27421](https://issues.apache.org/jira/browse/HBASE-27421) | Bump spotless plugin to 2.27.2 and reimplement the 'Remove unhelpful javadoc stubs' rule |  Major | documentation, pom |
+| [HBASE-27401](https://issues.apache.org/jira/browse/HBASE-27401) | Clean up current broken 'n's in our javadoc |  Major | documentation |
+| [HBASE-27403](https://issues.apache.org/jira/browse/HBASE-27403) | Remove 'Remove unhelpful javadoc stubs' spotless rule for now |  Major | documentation, pom |
+
+
+### OTHER:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27431](https://issues.apache.org/jira/browse/HBASE-27431) | Remove TestRemoteTable.testLimitedScan |  Trivial | REST, test |
+| [HBASE-27411](https://issues.apache.org/jira/browse/HBASE-27411) |  Update and clean up bcprov-jdk15on dependency |  Minor | build |
+| [HBASE-27372](https://issues.apache.org/jira/browse/HBASE-27372) | Update java versions in our Dockerfiles |  Major | build, scripts |
+| [HBASE-27373](https://issues.apache.org/jira/browse/HBASE-27373) | Fix new spotbugs warnings after upgrading spotbugs to 4.7.2 |  Major | . |
+| [HBASE-27371](https://issues.apache.org/jira/browse/HBASE-27371) | Bump spotbugs version |  Major | build, pom |
+
+
+## Release 2.5.0 - Unreleased (as of 2022-08-23)
+
+
+
+### NEW FEATURES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27104](https://issues.apache.org/jira/browse/HBASE-27104) | Add a tool command list\_unknownservers |  Major | master |
+| [HBASE-27129](https://issues.apache.org/jira/browse/HBASE-27129) | Add a config that allows us to configure region-level storage policies |  Major | regionserver |
+| [HBASE-27028](https://issues.apache.org/jira/browse/HBASE-27028) | Add a shell command  for flushing master local region |  Minor | shell |
+| [HBASE-26826](https://issues.apache.org/jira/browse/HBASE-26826) | Backport StoreFileTracker (HBASE-26067, HBASE-26584, and others) to branch-2.5 |  Major | Operability, regionserver |
+| [HBASE-26342](https://issues.apache.org/jira/browse/HBASE-26342) | Support custom paths of independent configuration and pool for hfile cleaner |  Major | master |
+| [HBASE-27018](https://issues.apache.org/jira/browse/HBASE-27018) | Add a tool command list\_liveservers |  Major | . |
+| [HBASE-26617](https://issues.apache.org/jira/browse/HBASE-26617) | Use spotless to reduce the pain on fixing checkstyle issues |  Major | build, community |
+| [HBASE-26959](https://issues.apache.org/jira/browse/HBASE-26959) | Brotli compression support |  Minor | . |
+| [HBASE-25865](https://issues.apache.org/jira/browse/HBASE-25865) | Visualize current state of region assignment |  Blocker | master, Operability, Usability |
+| [HBASE-26703](https://issues.apache.org/jira/browse/HBASE-26703) | Allow configuration of IPC queue balancer |  Minor | . |
+| [HBASE-26576](https://issues.apache.org/jira/browse/HBASE-26576) | Allow Pluggable Queue to belong to FastPath or normal Balanced Executor |  Minor | regionserver, rpc |
+| [HBASE-26347](https://issues.apache.org/jira/browse/HBASE-26347) | Support detect and exclude slow DNs in fan-out of WAL |  Major | wal |
+| [HBASE-26284](https://issues.apache.org/jira/browse/HBASE-26284) | Add HBase Thrift API to get all table names along with whether it is enabled or not |  Major | Thrift |
+| [HBASE-26141](https://issues.apache.org/jira/browse/HBASE-26141) | Add tracing support for HTable and sync connection on branch-2 |  Major | tracing |
+| [HBASE-6908](https://issues.apache.org/jira/browse/HBASE-6908) | Pluggable Call BlockingQueue for HBaseServer |  Major | IPC/RPC |
+| [HBASE-25841](https://issues.apache.org/jira/browse/HBASE-25841) | Add basic jshell support |  Minor | shell, Usability |
+| [HBASE-25756](https://issues.apache.org/jira/browse/HBASE-25756) | Support alternate compression for major and minor compactions |  Minor | Compaction |
+| [HBASE-25751](https://issues.apache.org/jira/browse/HBASE-25751) | Add writable TimeToPurgeDeletes to ScanOptions |  Major | . |
+| [HBASE-25665](https://issues.apache.org/jira/browse/HBASE-25665) | Disable reverse DNS lookup for SASL Kerberos client connection |  Major | . |
+| [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 | . |
+| [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 |
+| [HBASE-22749](https://issues.apache.org/jira/browse/HBASE-22749) | Distributed MOB compactions |  Major | mob |
+
+
+### IMPROVEMENTS:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-27305](https://issues.apache.org/jira/browse/HBASE-27305) | add an option to skip file splitting when bulkload hfiles |  Minor | tooling |
+| [HBASE-27089](https://issues.apache.org/jira/browse/HBASE-27089) | Add “commons.crypto.stream.buffer.size” configuration |  Minor | io |
+| [HBASE-27268](https://issues.apache.org/jira/browse/HBASE-27268) | In trace log mode, the client does not print callId/startTime and the server does not print receiveTime |  Minor | logging |
+| [HBASE-26982](https://issues.apache.org/jira/browse/HBASE-26982) | Add index and bloom filter statistics of LruBlockCache on rs web UI |  Minor | BlockCache, UI |
+| [HBASE-27296](https://issues.apache.org/jira/browse/HBASE-27296) | Some Cell's implementation of toString() such as IndividualBytesFieldCell prints out value and tags which is too verbose |  Minor | logging |
+| [HBASE-27283](https://issues.apache.org/jira/browse/HBASE-27283) | Use readTO instead of hard coded RpcClient.DEFAULT\_SOCKET\_TIMEOUT\_READ when creating  ReadTimeoutHandler in NettyRpcConnection |  Major | IPC/RPC, test |
+| [HBASE-27273](https://issues.apache.org/jira/browse/HBASE-27273) | Should stop autoRead and skip all the bytes when rpc request too big |  Major | IPC/RPC |
+| [HBASE-27153](https://issues.apache.org/jira/browse/HBASE-27153) | Improvements to read-path tracing |  Major | Operability, regionserver |
+| [HBASE-27229](https://issues.apache.org/jira/browse/HBASE-27229) | BucketCache statistics should not count evictions by hfile |  Major | . |
+| [HBASE-27222](https://issues.apache.org/jira/browse/HBASE-27222) | Purge FutureReturnValueIgnored warnings from error prone |  Major | netty |
+| [HBASE-20499](https://issues.apache.org/jira/browse/HBASE-20499) | Replication/Priority executors can use specific max queue length as default value instead of general maxQueueLength |  Minor | rpc |
+| [HBASE-27208](https://issues.apache.org/jira/browse/HBASE-27208) | Use spotless to purge the missing summary warnings from error prone |  Major | pom |
+| [HBASE-27048](https://issues.apache.org/jira/browse/HBASE-27048) | Server side scanner time limit should account for time in queue |  Major | . |
+| [HBASE-27088](https://issues.apache.org/jira/browse/HBASE-27088) | IntegrationLoadTestCommonCrawl async load improvements |  Minor | integration tests, test |
+| [HBASE-27149](https://issues.apache.org/jira/browse/HBASE-27149) | Server should close scanner if client times out before results are ready |  Major | . |
+| [HBASE-27188](https://issues.apache.org/jira/browse/HBASE-27188) | Report maxStoreFileCount in jmx |  Minor | . |
+| [HBASE-27186](https://issues.apache.org/jira/browse/HBASE-27186) | Report block cache size metrics separately for L1 and L2 |  Minor | . |
+| [HBASE-26950](https://issues.apache.org/jira/browse/HBASE-26950) | Use AsyncConnection in ReplicationSink |  Major | . |
+| [HBASE-27078](https://issues.apache.org/jira/browse/HBASE-27078) | Allow configuring a separate timeout for meta scans |  Major | . |
+| [HBASE-27101](https://issues.apache.org/jira/browse/HBASE-27101) | support commons-crypto version 1.1.0 |  Minor | . |
+| [HBASE-26218](https://issues.apache.org/jira/browse/HBASE-26218) | Better logging in CanaryTool |  Minor | canary |
+| [HBASE-27146](https://issues.apache.org/jira/browse/HBASE-27146) | Avoid CellUtil.cloneRow in MetaCellComparator |  Major | meta, Offheaping, Performance |
+| [HBASE-27125](https://issues.apache.org/jira/browse/HBASE-27125) | The batch size of cleaning expired mob files should have an upper bound |  Minor | mob |
+| [HBASE-26923](https://issues.apache.org/jira/browse/HBASE-26923) | PerformanceEvaluation support encryption option |  Minor | PE |
+| [HBASE-27095](https://issues.apache.org/jira/browse/HBASE-27095) | HbckChore should produce a report |  Major | hbck2, master |
+| [HBASE-27046](https://issues.apache.org/jira/browse/HBASE-27046) | The filenum in AbstractFSWAL should be monotone increasing |  Major | . |
+| [HBASE-27093](https://issues.apache.org/jira/browse/HBASE-27093) | AsyncNonMetaRegionLocator:put Complete CompletableFuture outside lock block |  Major | asyncclient, Client |
+| [HBASE-27080](https://issues.apache.org/jira/browse/HBASE-27080) | Optimize debug output log of ConstantSizeRegionSplitPolicy class. |  Minor | logging |
+| [HBASE-26649](https://issues.apache.org/jira/browse/HBASE-26649) | Support meta replica LoadBalance mode for RegionLocator#getAllRegionLocations() |  Major | meta replicas |
+| [HBASE-26320](https://issues.apache.org/jira/browse/HBASE-26320) | Separate Log Cleaner DirScanPool to prevent the OLDWALs from filling up the disk when archive is large |  Major | Operability |
+| [HBASE-27043](https://issues.apache.org/jira/browse/HBASE-27043) | Let lock wait timeout to improve performance of SnapshotHFileCleaner |  Major | snapshots |
+| [HBASE-25465](https://issues.apache.org/jira/browse/HBASE-25465) | Use javac --release option for supporting cross version compilation |  Minor | create-release |
+| [HBASE-27013](https://issues.apache.org/jira/browse/HBASE-27013) | Introduce read all bytes when using pread for prefetch |  Major | HFile, Performance |
+| [HBASE-27003](https://issues.apache.org/jira/browse/HBASE-27003) | Optimize log format for PerformanceEvaluation |  Minor | . |
+| [HBASE-26990](https://issues.apache.org/jira/browse/HBASE-26990) | Add default implementation for BufferedMutator interface setters |  Minor | . |
+| [HBASE-26419](https://issues.apache.org/jira/browse/HBASE-26419) | Tracing Spans of RPCs should follow otel semantic conventions |  Blocker | tracing |
+| [HBASE-26961](https://issues.apache.org/jira/browse/HBASE-26961) | cache region locations when getAllRegionLocations() for branch-2.4+ |  Minor | Client |
+| [HBASE-26975](https://issues.apache.org/jira/browse/HBASE-26975) | Add on heap and off heap memstore info in rs web UI |  Minor | UI |
+| [HBASE-26980](https://issues.apache.org/jira/browse/HBASE-26980) | Update javadoc of BucketCache.java |  Trivial | documentation |
+| [HBASE-26971](https://issues.apache.org/jira/browse/HBASE-26971) | SnapshotInfo --snapshot param is marked as required even when trying to list all snapshots |  Minor | . |
+| [HBASE-26807](https://issues.apache.org/jira/browse/HBASE-26807) | Unify CallQueueTooBigException special pause with CallDroppedException |  Major | . |
+| [HBASE-26891](https://issues.apache.org/jira/browse/HBASE-26891) | Make MetricsConnection scope configurable |  Minor | . |
+| [HBASE-26947](https://issues.apache.org/jira/browse/HBASE-26947) | Implement a special TestAppender to limit the size of test output |  Major | logging, test |
+| [HBASE-26618](https://issues.apache.org/jira/browse/HBASE-26618) | Involving primary meta region in meta scan with CatalogReplicaLoadBalanceSimpleSelector |  Minor | meta replicas |
+| [HBASE-26885](https://issues.apache.org/jira/browse/HBASE-26885) | The TRSP should not go on when it get a bogus server name from AM |  Major | proc-v2 |
+| [HBASE-26872](https://issues.apache.org/jira/browse/HBASE-26872) | Load rate calculator for cost functions should be more precise |  Major | Balancer |
+| [HBASE-26832](https://issues.apache.org/jira/browse/HBASE-26832) | Avoid repeated releasing of flushed wal entries in AsyncFSWAL#syncCompleted |  Major | wal |
+| [HBASE-26878](https://issues.apache.org/jira/browse/HBASE-26878) | TableInputFormatBase should cache RegionSizeCalculator |  Minor | . |
+| [HBASE-26175](https://issues.apache.org/jira/browse/HBASE-26175) | MetricsHBaseServer should record all kinds of Exceptions |  Minor | metrics |
+| [HBASE-21065](https://issues.apache.org/jira/browse/HBASE-21065) | Try ROW\_INDEX\_V1 encoding on meta table (fix bloomfilters on meta while we are at it) |  Major | meta, Performance |
+| [HBASE-26858](https://issues.apache.org/jira/browse/HBASE-26858) | Refactor TestMasterRegionOnTwoFileSystems to avoid dead loop |  Major | test |
+| [HBASE-26833](https://issues.apache.org/jira/browse/HBASE-26833) | Avoid waiting to clear buffer usage of ReplicationSourceShipper when aborting the RS |  Major | regionserver, Replication |
+| [HBASE-26848](https://issues.apache.org/jira/browse/HBASE-26848) | Set java.io.tmpdir on mvn command when running jenkins job |  Major | jenkins, test |
+| [HBASE-26828](https://issues.apache.org/jira/browse/HBASE-26828) | Increase the concurrency when running UTs in pre commit job |  Major | jenkins, test |
+| [HBASE-26680](https://issues.apache.org/jira/browse/HBASE-26680) | Close and do not write trailer for the broken WAL writer |  Major | wal |
+| [HBASE-26720](https://issues.apache.org/jira/browse/HBASE-26720) | ExportSnapshot should validate the source snapshot before copying files |  Major | snapshots |
+| [HBASE-26275](https://issues.apache.org/jira/browse/HBASE-26275) | update error message when executing deleteall with ROWPREFIXFILTER in meta table |  Minor | shell |
+| [HBASE-26835](https://issues.apache.org/jira/browse/HBASE-26835) | Rewrite TestLruAdaptiveBlockCache to make it more stable |  Major | test |
+| [HBASE-26830](https://issues.apache.org/jira/browse/HBASE-26830) | Rewrite TestLruBlockCache to make it more stable |  Major | test |
+| [HBASE-26814](https://issues.apache.org/jira/browse/HBASE-26814) | Default StoreHotnessProtector to off, with logs to guide when to turn it on |  Major | . |
+| [HBASE-26784](https://issues.apache.org/jira/browse/HBASE-26784) | Use HIGH\_QOS for ResultScanner.close requests |  Major | . |
+| [HBASE-26552](https://issues.apache.org/jira/browse/HBASE-26552) | Introduce retry to logroller to avoid abort |  Major | wal |
+| [HBASE-26792](https://issues.apache.org/jira/browse/HBASE-26792) | Implement ScanInfo#toString |  Minor | regionserver |
+| [HBASE-26731](https://issues.apache.org/jira/browse/HBASE-26731) | Metrics for tracking of active scanners |  Minor | . |
+| [HBASE-26789](https://issues.apache.org/jira/browse/HBASE-26789) | Automatically add default security headers to http/rest if SSL enabled |  Major | REST, UI |
+| [HBASE-26765](https://issues.apache.org/jira/browse/HBASE-26765) | Minor refactor of async scanning code |  Major | . |
+| [HBASE-26659](https://issues.apache.org/jira/browse/HBASE-26659) | The ByteBuffer of metadata in RAMQueueEntry in BucketCache could be reused. |  Major | BucketCache, Performance |
+| [HBASE-26730](https://issues.apache.org/jira/browse/HBASE-26730) | Extend hbase shell 'status' command to support an option 'tasks' |  Minor | Operability, shell |
+| [HBASE-26709](https://issues.apache.org/jira/browse/HBASE-26709) | Ban the usage of junit 3 TestCase |  Major | test |
+| [HBASE-26724](https://issues.apache.org/jira/browse/HBASE-26724) | Backport the UT changes in HBASE-24510 to branch-2.x |  Major | test |
+| [HBASE-26702](https://issues.apache.org/jira/browse/HBASE-26702) | Make ageOfLastShip, ageOfLastApplied  extend TimeHistogram instead of plain histogram. |  Minor | metrics, Replication |
+| [HBASE-26726](https://issues.apache.org/jira/browse/HBASE-26726) | Allow disable of region warmup before graceful move |  Minor | master, Region Assignment |
+| [HBASE-26657](https://issues.apache.org/jira/browse/HBASE-26657) | ProfileServlet should move the output location to hbase specific directory |  Minor | . |
+| [HBASE-26590](https://issues.apache.org/jira/browse/HBASE-26590) | Hbase-client Meta lookup performance regression between hbase-1 and hbase-2 |  Major | meta |
+| [HBASE-26567](https://issues.apache.org/jira/browse/HBASE-26567) | Remove IndexType from ChunkCreator |  Major | in-memory-compaction |
+| [HBASE-26641](https://issues.apache.org/jira/browse/HBASE-26641) | Split TestMasterFailoverWithProcedures |  Major | proc-v2, test |
+| [HBASE-26629](https://issues.apache.org/jira/browse/HBASE-26629) | Add expiration for long time vacant scanners in Thrift2 |  Major | Performance, Thrift |
+| [HBASE-26638](https://issues.apache.org/jira/browse/HBASE-26638) | Cherry-pick the ReflectionUtils improvements in HBASE-21515 to branch-2 |  Major | util |
+| [HBASE-26635](https://issues.apache.org/jira/browse/HBASE-26635) | Optimize decodeNumeric in OrderedBytes |  Major | Performance |
+| [HBASE-26623](https://issues.apache.org/jira/browse/HBASE-26623) | Report CallDroppedException in exception metrics |  Minor | IPC/RPC, metrics, rpc |
+| [HBASE-26609](https://issues.apache.org/jira/browse/HBASE-26609) | Round the size to MB or KB at the end of calculation in HRegionServer.createRegionLoad |  Major | regionserver |
+| [HBASE-26598](https://issues.apache.org/jira/browse/HBASE-26598) | Fix excessive connections in MajorCompactor |  Major | Compaction, tooling |
+| [HBASE-26579](https://issues.apache.org/jira/browse/HBASE-26579) | Set storage policy of recovered edits  when wal storage type is configured |  Major | Recovery |
+| [HBASE-26601](https://issues.apache.org/jira/browse/HBASE-26601) | maven-gpg-plugin failing with "Inappropriate ioctl for device" |  Major | build |
+| [HBASE-26556](https://issues.apache.org/jira/browse/HBASE-26556) | IT and Chaos Monkey improvements |  Minor | integration tests |
+| [HBASE-25547](https://issues.apache.org/jira/browse/HBASE-25547) | Thread pools should release unused resources |  Minor | master, regionserver |
+| [HBASE-26525](https://issues.apache.org/jira/browse/HBASE-26525) | Use unique thread name for group WALs |  Major | wal |
+| [HBASE-26517](https://issues.apache.org/jira/browse/HBASE-26517) | Add auth method information to AccessChecker audit log |  Trivial | security |
+| [HBASE-26512](https://issues.apache.org/jira/browse/HBASE-26512) | Make timestamp format configurable in HBase shell scan output |  Major | shell |
+| [HBASE-26485](https://issues.apache.org/jira/browse/HBASE-26485) | Introduce a method to clean restore directory after Snapshot Scan |  Minor | snapshots |
+| [HBASE-26479](https://issues.apache.org/jira/browse/HBASE-26479) | Print too slow/big scan's operation\_id in region server log |  Minor | regionserver, scan |
+| [HBASE-26475](https://issues.apache.org/jira/browse/HBASE-26475) | The flush and compact methods in HTU should skip processing secondary replicas |  Major | test |
+| [HBASE-26249](https://issues.apache.org/jira/browse/HBASE-26249) | Ameliorate compaction made by bulk-loading files |  Major | . |
+| [HBASE-26421](https://issues.apache.org/jira/browse/HBASE-26421) | Use HFileLink file to replace entire file‘s reference when splitting |  Major | . |
+| [HBASE-26267](https://issues.apache.org/jira/browse/HBASE-26267) | Master initialization fails if Master Region WAL dir is missing |  Major | master |
+| [HBASE-26446](https://issues.apache.org/jira/browse/HBASE-26446) | CellCounter should report serialized cell size counts too |  Minor | . |
+| [HBASE-26432](https://issues.apache.org/jira/browse/HBASE-26432) | Add tracing support in hbase shell |  Minor | shell, tracing |
+| [HBASE-26337](https://issues.apache.org/jira/browse/HBASE-26337) | Optimization for weighted random generators |  Major | Balancer |
+| [HBASE-26363](https://issues.apache.org/jira/browse/HBASE-26363) | OpenTelemetry configuration support for per-process service names |  Major | tracing |
+| [HBASE-26309](https://issues.apache.org/jira/browse/HBASE-26309) | Balancer tends to move regions to the server at the end of list |  Major | Balancer |
+| [HBASE-26305](https://issues.apache.org/jira/browse/HBASE-26305) | Move NavigableSet add operation to writer thread in BucketCache |  Minor | BucketCache, Performance |
+| [HBASE-26251](https://issues.apache.org/jira/browse/HBASE-26251) | StochasticLoadBalancer metrics should update even if balancer doesn't run |  Minor | Balancer |
+| [HBASE-26270](https://issues.apache.org/jira/browse/HBASE-26270) | Provide getConfiguration method for Region and Store interface |  Minor | . |
+| [HBASE-26273](https://issues.apache.org/jira/browse/HBASE-26273) | TableSnapshotInputFormat/TableSnapshotInputFormatImpl should use ReadType.STREAM for scanning HFiles |  Major | mapreduce |
+| [HBASE-26276](https://issues.apache.org/jira/browse/HBASE-26276) | Allow HashTable/SyncTable to perform rawScan when comparing cells |  Major | . |
+| [HBASE-26229](https://issues.apache.org/jira/browse/HBASE-26229) | Limit count and size of L0 files compaction in StripeCompactionPolicy |  Major | Compaction |
+| [HBASE-26243](https://issues.apache.org/jira/browse/HBASE-26243) | Fix typo for file 'hbase-server/src/main/java/org/apache/hadoop/hbase/util/HBaseFsck.java' |  Trivial | . |
+| [HBASE-25773](https://issues.apache.org/jira/browse/HBASE-25773) | TestSnapshotScannerHDFSAclController.setupBeforeClass is flaky |  Major | . |
+| [HBASE-26147](https://issues.apache.org/jira/browse/HBASE-26147) | Add dry run mode to hbase balancer |  Major | Balancer, master |
+| [HBASE-25642](https://issues.apache.org/jira/browse/HBASE-25642) | Fix or stop warning about already cached block |  Major | BlockCache, Operability, regionserver |
+| [HBASE-26212](https://issues.apache.org/jira/browse/HBASE-26212) | Allow AuthUtil automatic renewal to be disabled |  Minor | Client, security |
+| [HBASE-26187](https://issues.apache.org/jira/browse/HBASE-26187) | Write straight into the store directory when Splitting and Merging |  Major | . |
+| [HBASE-26193](https://issues.apache.org/jira/browse/HBASE-26193) | Do not store meta region location as permanent state on zookeeper |  Major | meta, Zookeeper |
+| [HBASE-24652](https://issues.apache.org/jira/browse/HBASE-24652) | master-status UI make date type fields sortable |  Minor | master, Operability, UI, Usability |
+| [HBASE-25680](https://issues.apache.org/jira/browse/HBASE-25680) | Non-idempotent test in TestReplicationHFileCleaner |  Minor | test |
+| [HBASE-26179](https://issues.apache.org/jira/browse/HBASE-26179) | TestRequestTooBigException spends too much time to finish |  Major | test |
+| [HBASE-26160](https://issues.apache.org/jira/browse/HBASE-26160) | Configurable disallowlist for live editing of loglevels |  Minor | . |
+| [HBASE-25469](https://issues.apache.org/jira/browse/HBASE-25469) | Add detailed RIT info in JSON format for consumption as metrics |  Minor | master |
+| [HBASE-26154](https://issues.apache.org/jira/browse/HBASE-26154) | Provide exception metric for quota exceeded and throttling |  Minor | . |
+| [HBASE-26144](https://issues.apache.org/jira/browse/HBASE-26144) | The HStore.snapshot method is never called in main code |  Major | regionserver |
+| [HBASE-26105](https://issues.apache.org/jira/browse/HBASE-26105) | Rectify the expired TODO comment in CombinedBC |  Trivial | BlockCache |
+| [HBASE-26146](https://issues.apache.org/jira/browse/HBASE-26146) | Allow custom opts for hbck in hbase bin |  Minor | . |
+| [HBASE-26118](https://issues.apache.org/jira/browse/HBASE-26118) | The HStore.commitFile and HStore.moveFileIntoPlace almost have the same logic |  Major | Compaction, regionserver |
+| [HBASE-26119](https://issues.apache.org/jira/browse/HBASE-26119) | Polish TestAsyncNonMetaRegionLocator |  Major | meta replicas, test |
+| [HBASE-21946](https://issues.apache.org/jira/browse/HBASE-21946) | Use ByteBuffer pread instead of byte[] pread in HFileBlock when applicable |  Critical | Offheaping |
+| [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-25986](https://issues.apache.org/jira/browse/HBASE-25986) | Expose the NORMALIZARION\_ENABLED table descriptor through a property in hbase-site |  Minor | Normalizer |
+| [HBASE-25700](https://issues.apache.org/jira/browse/HBASE-25700) | Enhance znode parent validation when add\_peer |  Minor | Replication |
+| [HBASE-26069](https://issues.apache.org/jira/browse/HBASE-26069) | Remove HStore.compactRecentForTestingAssumingDefaultPolicy and DefaultCompactor.compactForTesting |  Major | Compaction, test |
+| [HBASE-26065](https://issues.apache.org/jira/browse/HBASE-26065) | StripeStoreFileManager does not need to throw IOException for most methods |  Major | Compaction, HFile |
+| [HBASE-25914](https://issues.apache.org/jira/browse/HBASE-25914) | Provide slow/large logs on RegionServer UI |  Major | regionserver, UI |
+| [HBASE-26012](https://issues.apache.org/jira/browse/HBASE-26012) | Improve logging and dequeue logic in DelayQueue |  Minor | . |
+| [HBASE-26020](https://issues.apache.org/jira/browse/HBASE-26020) | Split TestWALEntryStream.testDifferentCounts out |  Major | Replication, test |
+| [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-26002](https://issues.apache.org/jira/browse/HBASE-26002) | MultiRowMutationEndpoint should return the result of the conditional update |  Major | Coprocessors |
+| [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-25666](https://issues.apache.org/jira/browse/HBASE-25666) | Explain why balancer is skipping runs |  Major | Balancer, master, UI |
+| [HBASE-25942](https://issues.apache.org/jira/browse/HBASE-25942) | Get rid of null regioninfo in wrapped connection exceptions |  Trivial | logging |
+| [HBASE-25745](https://issues.apache.org/jira/browse/HBASE-25745) | Deprecate/Rename config \`hbase.normalizer.min.region.count\` to \`hbase.normalizer.merge.min.region.count\` |  Minor | master, Normalizer |
+| [HBASE-25908](https://issues.apache.org/jira/browse/HBASE-25908) | Exclude jakarta.activation-api |  Major | hadoop3, shading |
+| [HBASE-25933](https://issues.apache.org/jira/browse/HBASE-25933) | Log trace raw exception, instead of cause message in NettyRpcServerRequestDecoder |  Minor | . |
+| [HBASE-25534](https://issues.apache.org/jira/browse/HBASE-25534) | Honor TableDescriptor settings earlier in normalization |  Major | Normalizer |
+| [HBASE-25906](https://issues.apache.org/jira/browse/HBASE-25906) | UI of master-status to show recent history of balancer desicion |  Major | Balancer, master, UI |
+| [HBASE-25899](https://issues.apache.org/jira/browse/HBASE-25899) | Improve efficiency of SnapshotHFileCleaner |  Major | master |
+| [HBASE-25682](https://issues.apache.org/jira/browse/HBASE-25682) | Add a new command to update the configuration of all RSs in a RSGroup |  Major | Admin, shell |
+| [HBASE-25032](https://issues.apache.org/jira/browse/HBASE-25032) | Do not assign regions to region server which has not called regionServerReport yet |  Major | . |
+| [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-25766](https://issues.apache.org/jira/browse/HBASE-25766) | Introduce RegionSplitRestriction that restricts the pattern of the split point |  Major | . |
+| [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 |
+| [HBASE-25744](https://issues.apache.org/jira/browse/HBASE-25744) | Change default of \`hbase.normalizer.merge.min\_region\_size.mb\` to \`0\` |  Major | master, Normalizer |
+| [HBASE-25747](https://issues.apache.org/jira/browse/HBASE-25747) | Remove unused getWriteAvailable method in OperationQuota |  Minor | Quotas |
+| [HBASE-25558](https://issues.apache.org/jira/browse/HBASE-25558) | Adding audit log for execMasterService |  Major | . |
+| [HBASE-25703](https://issues.apache.org/jira/browse/HBASE-25703) | Support conditional update in MultiRowMutationEndpoint |  Major | Coprocessors |
+| [HBASE-25686](https://issues.apache.org/jira/browse/HBASE-25686) | [hbtop] Add some javadoc |  Minor | hbtop |
+| [HBASE-25627](https://issues.apache.org/jira/browse/HBASE-25627) | HBase replication should have a metric to represent if the source is stuck getting initialized |  Major | Replication |
+| [HBASE-25688](https://issues.apache.org/jira/browse/HBASE-25688) | Use CustomRequestLog instead of Slf4jRequestLog for jetty |  Major | logging, UI |
+| [HBASE-25678](https://issues.apache.org/jira/browse/HBASE-25678) | Support nonce operations for Increment/Append in RowMutations and CheckAndMutate |  Major | . |
+| [HBASE-25679](https://issues.apache.org/jira/browse/HBASE-25679) | Size of log queue metric is incorrect in branch-1/branch-2 |  Major | . |
+| [HBASE-25518](https://issues.apache.org/jira/browse/HBASE-25518) | Support separate child regions to different region servers |  Major | . |
+| [HBASE-25643](https://issues.apache.org/jira/browse/HBASE-25643) | The delayed FlushRegionEntry should be removed when we need a non-delayed one |  Major | regionserver |
+| [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-25660](https://issues.apache.org/jira/browse/HBASE-25660) | Print split policy in use on Region open (as well as split policy vitals) |  Trivial | . |
+| [HBASE-25635](https://issues.apache.org/jira/browse/HBASE-25635) | CandidateGenerator may miss some region balance actions |  Major | Balancer |
+| [HBASE-25622](https://issues.apache.org/jira/browse/HBASE-25622) | Result#compareResults should compare tags. |  Major | Client |
+| [HBASE-25570](https://issues.apache.org/jira/browse/HBASE-25570) | On largish cluster, "CleanerChore: Could not delete dir..." makes master log unreadable |  Major | . |
+| [HBASE-25566](https://issues.apache.org/jira/browse/HBASE-25566) | RoundRobinTableInputFormat |  Major | mapreduce |
+| [HBASE-25636](https://issues.apache.org/jira/browse/HBASE-25636) | Expose HBCK report as metrics |  Minor | metrics |
+| [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-25637](https://issues.apache.org/jira/browse/HBASE-25637) | Rename method completeCompaction to refreshStoreSizeCount |  Minor | . |
+| [HBASE-25492](https://issues.apache.org/jira/browse/HBASE-25492) | Create table with rsgroup info in branch-2 |  Major | rsgroup |
+| [HBASE-25603](https://issues.apache.org/jira/browse/HBASE-25603) | Add switch for compaction after bulkload |  Major | Compaction |
+| [HBASE-25539](https://issues.apache.org/jira/browse/HBASE-25539) | Add metric for age of oldest wal. |  Major | metrics, regionserver |
+| [HBASE-25574](https://issues.apache.org/jira/browse/HBASE-25574) | Revisit put/delete/increment/append related RegionObserver methods |  Major | Coprocessors |
+| [HBASE-25541](https://issues.apache.org/jira/browse/HBASE-25541) | In WALEntryStream, set the current path to null while dequeing the log |  Major | . |
+| [HBASE-23887](https://issues.apache.org/jira/browse/HBASE-23887) | New L1 cache : AdaptiveLRU |  Major | BlockCache, Performance |
+| [HBASE-25364](https://issues.apache.org/jira/browse/HBASE-25364) | Redo the getMidPoint() in HFileWriterImpl to get rid of the double comparison process |  Minor | . |
+| [HBASE-25519](https://issues.apache.org/jira/browse/HBASE-25519) | BLOCKSIZE needs to support pretty print |  Major | . |
+| [HBASE-24772](https://issues.apache.org/jira/browse/HBASE-24772) | Use GetoptLong or OptionParser in hbase-shell |  Minor | shell |
+| [HBASE-25542](https://issues.apache.org/jira/browse/HBASE-25542) | Add client detail to scan name so when lease expires, we have clue on who was scanning |  Major | scan |
+| [HBASE-25553](https://issues.apache.org/jira/browse/HBASE-25553) | It is better for ReplicationTracker.getListOfRegionServers to return ServerName instead of String |  Major | . |
+| [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 |
+| [HBASE-25431](https://issues.apache.org/jira/browse/HBASE-25431) | MAX\_FILESIZE and MEMSTORE\_FLUSHSIZE should not be set negative number |  Major | . |
+| [HBASE-25439](https://issues.apache.org/jira/browse/HBASE-25439) | Add BYTE unit in PrettyPrinter.Unit |  Major | . |
+| [HBASE-25249](https://issues.apache.org/jira/browse/HBASE-25249) | Adding StoreContext |  Major | . |
+| [HBASE-23340](https://issues.apache.org/jira/browse/HBASE-23340) | hmaster  /hbase/replication/rs  session expired (hbase replication default value is true, we don't use ) causes logcleaner can not clean oldWALs, which resulits in oldWALs too large (more than 2TB) |  Major | master |
+| [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-25211](https://issues.apache.org/jira/browse/HBASE-25211) | Rack awareness in region\_mover |  Major | . |
+| [HBASE-25483](https://issues.apache.org/jira/browse/HBASE-25483) | set the loadMeta log level to debug. |  Major | MTTR, Region Assignment |
+| [HBASE-25471](https://issues.apache.org/jira/browse/HBASE-25471) | Move RegionScannerImpl out of HRegion |  Major | regionserver |
+| [HBASE-25458](https://issues.apache.org/jira/browse/HBASE-25458) | HRegion methods cleanup |  Major | regionserver |
+| [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-25450](https://issues.apache.org/jira/browse/HBASE-25450) | The parameter "hbase.bucketcache.size" is misdescribed |  Major | conf |
+| [HBASE-24751](https://issues.apache.org/jira/browse/HBASE-24751) | Display Task completion time and/or processing duration on Web UI |  Minor | UI |
+| [HBASE-25379](https://issues.apache.org/jira/browse/HBASE-25379) | Make retry pause time configurable for regionserver short operation RPC (reportRegionStateTransition/reportProcedureDone) |  Minor | regionserver |
+| [HBASE-24850](https://issues.apache.org/jira/browse/HBASE-24850) | CellComparator perf improvement |  Critical | Performance, scan |
+| [HBASE-25443](https://issues.apache.org/jira/browse/HBASE-25443) | Improve the experience of using the Master webpage by change the loading process of snapshot list to asynchronous |  Minor | master, UI |
+| [HBASE-25425](https://issues.apache.org/jira/browse/HBASE-25425) | Some notes on RawCell |  Trivial | . |
+| [HBASE-25084](https://issues.apache.org/jira/browse/HBASE-25084) | RegexStringComparator in ParseFilter should support case-insensitive regexes |  Major | Thrift |
+| [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-25363](https://issues.apache.org/jira/browse/HBASE-25363) | Improve performance of HFileLinkCleaner by using ReadWriteLock instead of synchronize |  Major | master |
+| [HBASE-25328](https://issues.apache.org/jira/browse/HBASE-25328) | Add builder method to create Tags. |  Minor | . |
+| [HBASE-25187](https://issues.apache.org/jira/browse/HBASE-25187) | Improve SizeCachedKV variants initialization |  Minor | . |
+| [HBASE-23303](https://issues.apache.org/jira/browse/HBASE-23303) | Add security headers to REST server/info page |  Major | REST |
+
+
+### BUG FIXES:
+
+| JIRA | Summary | Priority | Component |
+|:---- |:---- | :--- |:---- |
+| [HBASE-25970](https://issues.apache.org/jira/browse/HBASE-25970) | MOB data loss - incorrect concatenation of MOB\_FILE\_REFS |  Critical | mob |
+| [HBASE-24163](https://issues.apache.org/jira/browse/HBASE-24163) | MOB compactor implementations should use format specifiers when calling String.format |  Major | Compaction, mob |
+| [HBASE-27292](https://issues.apache.org/jira/browse/HBASE-27292) | Fix build failure against Hadoop 3.3.4 due to added dependency on okhttp |  Major | build, hadoop3, pom |
+| [HBASE-27275](https://issues.apache.org/jira/browse/HBASE-27275) | graceful\_stop.sh unable to restore the balance state |  Blocker | regionserver |
+| [HBASE-27282](https://issues.apache.org/jira/browse/HBASE-27282) | CME in AuthManager causes region server crash |  Major | acl |
+| [HBASE-26775](https://issues.apache.org/jira/browse/HBASE-26775) | TestProcedureSchedulerConcurrency fails in pre commit |  Major | proc-v2, test |
+| [HBASE-27269](https://issues.apache.org/jira/browse/HBASE-27269) | The implementation of TestReplicationStatus.waitOnMetricsReport is incorrect |  Major | Replication, test |
+| [HBASE-27271](https://issues.apache.org/jira/browse/HBASE-27271) | BufferCallBeforeInitHandler should ignore the flush request |  Major | IPC/RPC |
+| [HBASE-26977](https://issues.apache.org/jira/browse/HBASE-26977) | HMaster's ShutdownHook does not take effect, if tablesOnMaster is false |  Major | master |
+| [HBASE-27247](https://issues.apache.org/jira/browse/HBASE-27247) | TestPerTableCFReplication.testParseTableCFsFromConfig is broken because of  ReplicationPeerConfigUtil.parseTableCFsFromConfig |  Major | Replication |
+| [HBASE-27087](https://issues.apache.org/jira/browse/HBASE-27087) | TestQuotaThrottle times out |  Major | test |
+| [HBASE-27179](https://issues.apache.org/jira/browse/HBASE-27179) | Issues building with OpenJDK 17 |  Minor | build |
+| [HBASE-27204](https://issues.apache.org/jira/browse/HBASE-27204) | BlockingRpcClient will hang for 20 seconds when SASL is enabled after finishing negotiation |  Critical | rpc, sasl, security |
+| [HBASE-27075](https://issues.apache.org/jira/browse/HBASE-27075) | TestUpdateRSGroupConfiguration.testCustomOnlineConfigChangeInRSGroup is flaky |  Minor | rsgroup, test |
+| [HBASE-27219](https://issues.apache.org/jira/browse/HBASE-27219) | Change JONI encoding in RegexStringComparator |  Minor | Filters |
+| [HBASE-27195](https://issues.apache.org/jira/browse/HBASE-27195) | Clean up netty worker/thread pool configuration |  Major | . |
+| [HBASE-27211](https://issues.apache.org/jira/browse/HBASE-27211) | Data race in MonitoredTaskImpl could cause split wal failure |  Critical | monitoring, wal |
+| [HBASE-27053](https://issues.apache.org/jira/browse/HBASE-27053) | IOException during caching of uncompressed block to the block cache. |  Major | BlockCache |
+| [HBASE-27192](https://issues.apache.org/jira/browse/HBASE-27192) | The retry number for TestSeparateClientZKCluster is too small |  Major | test, Zookeeper |
+| [HBASE-27193](https://issues.apache.org/jira/browse/HBASE-27193) | TestZooKeeper is flaky |  Major | test, Zookeeper |
+| [HBASE-27097](https://issues.apache.org/jira/browse/HBASE-27097) | SimpleRpcServer is broken |  Blocker | rpc |
+| [HBASE-27189](https://issues.apache.org/jira/browse/HBASE-27189) | NettyServerRpcConnection is not properly closed when the netty channel is closed |  Blocker | netty, rpc |
+| [HBASE-27169](https://issues.apache.org/jira/browse/HBASE-27169) | TestSeparateClientZKCluster is flaky |  Major | test |
+| [HBASE-27180](https://issues.apache.org/jira/browse/HBASE-27180) | Multiple possible buffer leaks |  Major | netty, regionserver |
+| [HBASE-26708](https://issues.apache.org/jira/browse/HBASE-26708) | Netty "leak detected" and OutOfDirectMemoryError due to direct memory buffering with SASL implementation |  Blocker | netty, rpc, sasl |
+| [HBASE-27171](https://issues.apache.org/jira/browse/HBASE-27171) | Fix Annotation Error in HRegionFileSystem |  Trivial | . |
+| [HBASE-27170](https://issues.apache.org/jira/browse/HBASE-27170) | ByteBuffAllocator leak when decompressing blocks near minSizeForReservoirUse |  Major | . |
+| [HBASE-27160](https://issues.apache.org/jira/browse/HBASE-27160) | ClientZKSyncer.deleteDataForClientZkUntilSuccess should break from the loop when deletion is succeeded |  Major | Client, Zookeeper |
+| [HBASE-27001](https://issues.apache.org/jira/browse/HBASE-27001) | The deleted variable cannot be printed out |  Minor | . |
+| [HBASE-27105](https://issues.apache.org/jira/browse/HBASE-27105) | HBaseInterClusterReplicationEndpoint should honor replication adaptive timeout |  Major | Replication |
+| [HBASE-27098](https://issues.apache.org/jira/browse/HBASE-27098) | Fix link for field comments |  Minor | . |
+| [HBASE-27143](https://issues.apache.org/jira/browse/HBASE-27143) | Add hbase-unsafe as a dependency for a MR job triggered by hbase shell |  Major | integration tests, mapreduce |
+| [HBASE-27099](https://issues.apache.org/jira/browse/HBASE-27099) | In the HFileBlock class, the log printing fspread/fsread cost time unit should be milliseconds |  Minor | HFile |
+| [HBASE-27128](https://issues.apache.org/jira/browse/HBASE-27128) | when open archiveRetries totalLogSize calculation mistake |  Minor | wal |
+| [HBASE-27117](https://issues.apache.org/jira/browse/HBASE-27117) | Update the method comments for RegionServerAccounting |  Minor | . |
+| [HBASE-27103](https://issues.apache.org/jira/browse/HBASE-27103) | All MR UTs are broken because of ClassNotFound |  Critical | hadoop3, test |
+| [HBASE-27066](https://issues.apache.org/jira/browse/HBASE-27066) | The Region Visualizer display failed |  Major | . |
+| [HBASE-27038](https://issues.apache.org/jira/browse/HBASE-27038) | CellComparator should extend Serializable |  Minor | . |
+| [HBASE-27017](https://issues.apache.org/jira/browse/HBASE-27017) | MOB snapshot is broken when FileBased SFT is used |  Major | mob |
+| [HBASE-26985](https://issues.apache.org/jira/browse/HBASE-26985) | SecureBulkLoadManager will set wrong permission if umask too strict |  Major | regionserver |
+| [HBASE-27081](https://issues.apache.org/jira/browse/HBASE-27081) | Fix disallowed compatibility breaks on branch-2.5 and branch-2 |  Blocker | . |
+| [HBASE-27079](https://issues.apache.org/jira/browse/HBASE-27079) | Lower some DEBUG level logs in ReplicationSourceWALReader to TRACE |  Minor | . |
+| [HBASE-27068](https://issues.apache.org/jira/browse/HBASE-27068) | NPE occurs when the active master has not yet been elected |  Major | . |
+| [HBASE-27064](https://issues.apache.org/jira/browse/HBASE-27064) | CME in TestRegionNormalizerWorkQueue |  Minor | test |
+| [HBASE-27069](https://issues.apache.org/jira/browse/HBASE-27069) | Hbase SecureBulkload permission regression |  Major | . |
+| [HBASE-27065](https://issues.apache.org/jira/browse/HBASE-27065) | Build against Hadoop 3.3.3 |  Major | build |
+| [HBASE-26854](https://issues.apache.org/jira/browse/HBASE-26854) | Shell startup logs a bunch of noise |  Major | . |
+| [HBASE-27061](https://issues.apache.org/jira/browse/HBASE-27061) | two phase bulkload is broken when SFT is in use. |  Major | . |
+| [HBASE-27055](https://issues.apache.org/jira/browse/HBASE-27055) | Add additional comments when using HBASE\_TRACE\_OPTS with standalone mode |  Minor | tracing |
+| [HBASE-27030](https://issues.apache.org/jira/browse/HBASE-27030) | Fix undefined local variable error in draining\_servers.rb |  Major | jruby, shell |
+| [HBASE-27047](https://issues.apache.org/jira/browse/HBASE-27047) | Fix typo for metric drainingRegionServers |  Minor | metrics |
+| [HBASE-27027](https://issues.apache.org/jira/browse/HBASE-27027) | Deprecated jetty SslContextFactory cause HMaster startup failure due to multiple certificates in KeyStores |  Major | security |
+| [HBASE-27032](https://issues.apache.org/jira/browse/HBASE-27032) | The draining region servers metric description is incorrect |  Minor | . |
+| [HBASE-27019](https://issues.apache.org/jira/browse/HBASE-27019) | Minor compression performance improvements |  Trivial | . |
+| [HBASE-26905](https://issues.apache.org/jira/browse/HBASE-26905) | ReplicationPeerManager#checkPeerExists should throw ReplicationPeerNotFoundException if peer doesn't exists |  Major | Replication |
+| [HBASE-27021](https://issues.apache.org/jira/browse/HBASE-27021) | StoreFileInfo should set its initialPath in a consistent way |  Major | . |
+| [HBASE-26994](https://issues.apache.org/jira/browse/HBASE-26994) | MasterFileSystem create directory without permission check |  Major | master |
+| [HBASE-26963](https://issues.apache.org/jira/browse/HBASE-26963) | ReplicationSource#removePeer hangs if we try to remove bad peer. |  Major | regionserver, Replication |
+| [HBASE-27000](https://issues.apache.org/jira/browse/HBASE-27000) | Block cache stats (Misses Caching) display error in RS web UI |  Major | . |
+| [HBASE-26984](https://issues.apache.org/jira/browse/HBASE-26984) | Chaos Monkey thread dies in ITBLL Chaos GracefulRollingRestartRsAction |  Major | integration tests |
+| [HBASE-26992](https://issues.apache.org/jira/browse/HBASE-26992) | Brotli compressor has unexpected behavior during reinitialization |  Minor | . |
+| [HBASE-26988](https://issues.apache.org/jira/browse/HBASE-26988) | Balancer should reset to default setting for hbase.master.loadbalance.bytable if dynamically reloading configuration |  Minor | Balancer |
+| [HBASE-26917](https://issues.apache.org/jira/browse/HBASE-26917) | Do not add --threads when running 'mvn site' |  Major | build, scripts |
+| [HBASE-22349](https://issues.apache.org/jira/browse/HBASE-22349) | Stochastic Load Balancer skips balancing when node is replaced in cluster |  Major | Balancer |
+| [HBASE-26979](https://issues.apache.org/jira/browse/HBASE-26979) | StoreFileListFile logs frequent stacktraces at INFO level |  Minor | . |
+| [HBASE-26941](https://issues.apache.org/jira/browse/HBASE-26941) | LocalHBaseCluster.waitOnRegionServer should not call join while interrupted |  Critical | test |
+| [HBASE-26938](https://issues.apache.org/jira/browse/HBASE-26938) | Compaction failures after StoreFileTracker integration |  Blocker | Compaction |
+| [HBASE-26944](https://issues.apache.org/jira/browse/HBASE-26944) | Possible resource leak while creating new region scanner |  Major | . |
+| [HBASE-26895](https://issues.apache.org/jira/browse/HBASE-26895) | on hbase shell, 'delete/deleteall' for a columnfamily is not working |  Major | shell |
+| [HBASE-26901](https://issues.apache.org/jira/browse/HBASE-26901) | delete with null columnQualifier occurs NullPointerException when NewVersionBehavior is on |  Major | Deletes, Scanners |
+| [HBASE-26880](https://issues.apache.org/jira/browse/HBASE-26880) | Misspelling commands in hbase shell will crash the shell |  Minor | shell |
+| [HBASE-26939](https://issues.apache.org/jira/browse/HBASE-26939) | Typo in admin.rb "COMPRESSION\_COMPACT\_MAJPR" |  Trivial | . |
+| [HBASE-26924](https://issues.apache.org/jira/browse/HBASE-26924) | [Documentation] Fix log parameter error and spelling error |  Trivial | logging |
+| [HBASE-26811](https://issues.apache.org/jira/browse/HBASE-26811) | Secondary replica may be disabled for read incorrectly forever |  Major | read replicas |
+| [HBASE-26812](https://issues.apache.org/jira/browse/HBASE-26812) | ShortCircuitingClusterConnection fails to close RegionScanners when making short-circuited calls |  Critical | . |
+| [HBASE-26838](https://issues.apache.org/jira/browse/HBASE-26838) | Junit jar is not included in the hbase tar ball, causing issues for some  hbase tools that do rely on it |  Major | integration tests, tooling |
+| [HBASE-26871](https://issues.apache.org/jira/browse/HBASE-26871) | shaded mapreduce and shaded byo-hadoop client artifacts contains no classes |  Blocker | integration tests, jenkins, mapreduce |
+| [HBASE-26896](https://issues.apache.org/jira/browse/HBASE-26896) | list\_quota\_snapshots fails with ‘ERROR NameError: uninitialized constant Shell::Commands::ListQuotaSnapshots::TABLE’ |  Major | shell |
+| [HBASE-26718](https://issues.apache.org/jira/browse/HBASE-26718) | HFileArchiver can remove referenced StoreFiles from the archive |  Major | Compaction, HFile, snapshots |
+| [HBASE-26864](https://issues.apache.org/jira/browse/HBASE-26864) | SplitTableRegionProcedure calls openParentRegions() at a wrong state during rollback. |  Major | Region Assignment |
+| [HBASE-26876](https://issues.apache.org/jira/browse/HBASE-26876) | Use toStringBinary for rowkey in RegionServerCallable error string |  Minor | . |
+| [HBASE-26875](https://issues.apache.org/jira/browse/HBASE-26875) | RpcRetryingCallerImpl translateException ignores return value of recursive call |  Minor | . |
+| [HBASE-26869](https://issues.apache.org/jira/browse/HBASE-26869) | RSRpcServices.scan should deep clone cells when RpcCallContext is null |  Major | regionserver |
+| [HBASE-26870](https://issues.apache.org/jira/browse/HBASE-26870) | Log4j2 integration is incorrect in nighly's client integration test |  Critical | jenkins, logging |
+| [HBASE-26840](https://issues.apache.org/jira/browse/HBASE-26840) | Fix NPE in the retry of logroller |  Minor | wal |
+| [HBASE-26670](https://issues.apache.org/jira/browse/HBASE-26670) | HFileLinkCleaner should be added even if snapshot is disabled |  Critical | snapshots |
+| [HBASE-26761](https://issues.apache.org/jira/browse/HBASE-26761) | TestMobStoreScanner (testGetMassive) can OOME |  Minor | mob, test |
+| [HBASE-26816](https://issues.apache.org/jira/browse/HBASE-26816) | Fix CME in ReplicationSourceManager |  Minor | Replication |
+| [HBASE-26715](https://issues.apache.org/jira/browse/HBASE-26715) | Blocked on SyncFuture in AsyncProtobufLogWriter#write |  Major | . |
+| [HBASE-26804](https://issues.apache.org/jira/browse/HBASE-26804) | Missing opentelemetry agent in hadoop-two-compat.xml |  Blocker | tracing |
+| [HBASE-26815](https://issues.apache.org/jira/browse/HBASE-26815) | TestFanOutOneBlockAsyncDFSOutput is flakey |  Major | test |
+| [HBASE-26783](https://issues.apache.org/jira/browse/HBASE-26783) | ScannerCallable doubly clears meta cache on retries |  Major | . |
+| [HBASE-26777](https://issues.apache.org/jira/browse/HBASE-26777) | BufferedDataBlockEncoder$OffheapDecodedExtendedCell.deepClone throws UnsupportedOperationException |  Major | regionserver |
+| [HBASE-26745](https://issues.apache.org/jira/browse/HBASE-26745) | MetricsStochasticBalancerSource metrics don't render in /jmx endpoint |  Minor | . |
+| [HBASE-26776](https://issues.apache.org/jira/browse/HBASE-26776) | RpcServer failure to SASL handshake always logs user "unknown" to audit log |  Major | security |
+| [HBASE-26772](https://issues.apache.org/jira/browse/HBASE-26772) | Shell suspended in background |  Minor | shell |
+| [HBASE-26767](https://issues.apache.org/jira/browse/HBASE-26767) | Rest server should not use a large Header Cache. |  Major | REST |

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