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Make upstream aware of 3.2.4 release.

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# Apache Hadoop Changelog
## Release 3.2.4 - 2022-07-12
### NEW FEATURES:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HDFS-16337](https://issues.apache.org/jira/browse/HDFS-16337) | Show start time of Datanode on Web | Minor | . | Tao Li | Tao Li |
### IMPROVEMENTS:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HDFS-15075](https://issues.apache.org/jira/browse/HDFS-15075) | Remove process command timing from BPServiceActor | Major | . | Íñigo Goiri | Xiaoqiao He |
| [HDFS-15150](https://issues.apache.org/jira/browse/HDFS-15150) | Introduce read write lock to Datanode | Major | datanode | Stephen O'Donnell | Stephen O'Donnell |
| [HDFS-16175](https://issues.apache.org/jira/browse/HDFS-16175) | Improve the configurable value of Server #PURGE\_INTERVAL\_NANOS | Major | ipc | JiangHua Zhu | JiangHua Zhu |
| [HDFS-16173](https://issues.apache.org/jira/browse/HDFS-16173) | Improve CopyCommands#Put#executor queue configurability | Major | fs | JiangHua Zhu | JiangHua Zhu |
| [HADOOP-17897](https://issues.apache.org/jira/browse/HADOOP-17897) | Allow nested blocks in switch case in checkstyle settings | Minor | build | Masatake Iwasaki | Masatake Iwasaki |
| [HADOOP-17857](https://issues.apache.org/jira/browse/HADOOP-17857) | Check real user ACLs in addition to proxied user ACLs | Major | . | Eric Payne | Eric Payne |
| [HDFS-14997](https://issues.apache.org/jira/browse/HDFS-14997) | BPServiceActor processes commands from NameNode asynchronously | Major | datanode | Xiaoqiao He | Xiaoqiao He |
| [HADOOP-17926](https://issues.apache.org/jira/browse/HADOOP-17926) | Maven-eclipse-plugin is no longer needed since Eclipse can import Maven projects by itself. | Minor | documentation | Rintaro Ikeda | Rintaro Ikeda |
| [YARN-10935](https://issues.apache.org/jira/browse/YARN-10935) | AM Total Queue Limit goes below per-user AM Limit if parent is full. | Major | capacity scheduler, capacityscheduler | Eric Payne | Eric Payne |
| [HDFS-16241](https://issues.apache.org/jira/browse/HDFS-16241) | Standby close reconstruction thread | Major | . | zhanghuazong | zhanghuazong |
| [YARN-1115](https://issues.apache.org/jira/browse/YARN-1115) | Provide optional means for a scheduler to check real user ACLs | Major | capacity scheduler, scheduler | Eric Payne | |
| [HDFS-16279](https://issues.apache.org/jira/browse/HDFS-16279) | Print detail datanode info when process first storage report | Minor | . | Tao Li | Tao Li |
| [HDFS-16294](https://issues.apache.org/jira/browse/HDFS-16294) | Remove invalid DataNode#CONFIG\_PROPERTY\_SIMULATED | Major | datanode | JiangHua Zhu | JiangHua Zhu |
| [HDFS-16299](https://issues.apache.org/jira/browse/HDFS-16299) | Fix bug for TestDataNodeVolumeMetrics#verifyDataNodeVolumeMetrics | Minor | . | Tao Li | Tao Li |
| [HDFS-16301](https://issues.apache.org/jira/browse/HDFS-16301) | Improve BenchmarkThroughput#SIZE naming standardization | Minor | benchmarks, test | JiangHua Zhu | JiangHua Zhu |
| [YARN-10997](https://issues.apache.org/jira/browse/YARN-10997) | Revisit allocation and reservation logging | Major | . | Andras Gyori | Andras Gyori |
| [HDFS-16315](https://issues.apache.org/jira/browse/HDFS-16315) | Add metrics related to Transfer and NativeCopy for DataNode | Major | . | Tao Li | Tao Li |
| [HADOOP-17998](https://issues.apache.org/jira/browse/HADOOP-17998) | Allow get command to run with multi threads. | Major | fs | Chengwei Wang | Chengwei Wang |
| [HDFS-16345](https://issues.apache.org/jira/browse/HDFS-16345) | Fix test cases fail in TestBlockStoragePolicy | Major | build | guophilipse | guophilipse |
| [HADOOP-18035](https://issues.apache.org/jira/browse/HADOOP-18035) | Skip unit test failures to run all the unit tests | Major | build | Akira Ajisaka | Akira Ajisaka |
| [HADOOP-18040](https://issues.apache.org/jira/browse/HADOOP-18040) | Use maven.test.failure.ignore instead of ignoreTestFailure | Major | build | Akira Ajisaka | Akira Ajisaka |
| [HDFS-16352](https://issues.apache.org/jira/browse/HDFS-16352) | return the real datanode numBlocks in #getDatanodeStorageReport | Major | . | qinyuren | qinyuren |
| [HDFS-16386](https://issues.apache.org/jira/browse/HDFS-16386) | Reduce DataNode load when FsDatasetAsyncDiskService is working | Major | datanode | JiangHua Zhu | JiangHua Zhu |
| [HDFS-16391](https://issues.apache.org/jira/browse/HDFS-16391) | Avoid evaluation of LOG.debug statement in NameNodeHeartbeatService | Trivial | . | wangzhaohui | wangzhaohui |
| [YARN-8234](https://issues.apache.org/jira/browse/YARN-8234) | Improve RM system metrics publisher's performance by pushing events to timeline server in batch | Critical | resourcemanager, timelineserver | Hu Ziqian | Ashutosh Gupta |
| [HDFS-16430](https://issues.apache.org/jira/browse/HDFS-16430) | Validate maximum blocks in EC group when adding an EC policy | Minor | ec, erasure-coding | daimin | daimin |
| [HDFS-16403](https://issues.apache.org/jira/browse/HDFS-16403) | Improve FUSE IO performance by supporting FUSE parameter max\_background | Minor | fuse-dfs | daimin | daimin |
| [HADOOP-18136](https://issues.apache.org/jira/browse/HADOOP-18136) | Verify FileUtils.unTar() handling of missing .tar files | Minor | test, util | Steve Loughran | Steve Loughran |
| [HDFS-16529](https://issues.apache.org/jira/browse/HDFS-16529) | Remove unnecessary setObserverRead in TestConsistentReadsObserver | Trivial | test | wangzhaohui | wangzhaohui |
| [HDFS-16530](https://issues.apache.org/jira/browse/HDFS-16530) | setReplication debug log creates a new string even if debug is disabled | Major | namenode | Stephen O'Donnell | Stephen O'Donnell |
| [HDFS-16427](https://issues.apache.org/jira/browse/HDFS-16427) | Add debug log for BlockManager#chooseExcessRedundancyStriped | Minor | erasure-coding | Tao Li | Tao Li |
| [HDFS-16389](https://issues.apache.org/jira/browse/HDFS-16389) | Improve NNThroughputBenchmark test mkdirs | Major | benchmarks, namenode | JiangHua Zhu | JiangHua Zhu |
| [MAPREDUCE-7373](https://issues.apache.org/jira/browse/MAPREDUCE-7373) | Building MapReduce NativeTask fails on Fedora 34+ | Major | build, nativetask | Kengo Seki | Kengo Seki |
| [HDFS-16355](https://issues.apache.org/jira/browse/HDFS-16355) | Improve the description of dfs.block.scanner.volume.bytes.per.second | Minor | documentation, hdfs | guophilipse | guophilipse |
| [HADOOP-18088](https://issues.apache.org/jira/browse/HADOOP-18088) | Replace log4j 1.x with reload4j | Major | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
| [HDFS-16501](https://issues.apache.org/jira/browse/HDFS-16501) | Print the exception when reporting a bad block | Major | datanode | qinyuren | qinyuren |
| [YARN-11116](https://issues.apache.org/jira/browse/YARN-11116) | Migrate Times util from SimpleDateFormat to thread-safe DateTimeFormatter class | Minor | . | Jonathan Turner Eagles | Jonathan Turner Eagles |
| [YARN-10080](https://issues.apache.org/jira/browse/YARN-10080) | Support show app id on localizer thread pool | Major | nodemanager | zhoukang | Ashutosh Gupta |
| [HADOOP-18240](https://issues.apache.org/jira/browse/HADOOP-18240) | Upgrade Yetus to 0.14.0 | Major | build | Akira Ajisaka | Ashutosh Gupta |
| [HDFS-16585](https://issues.apache.org/jira/browse/HDFS-16585) | Add @VisibleForTesting in Dispatcher.java after HDFS-16268 | Trivial | . | Wei-Chiu Chuang | Ashutosh Gupta |
| [HDFS-16610](https://issues.apache.org/jira/browse/HDFS-16610) | Make fsck read timeout configurable | Major | hdfs-client | Stephen O'Donnell | Stephen O'Donnell |
### BUG FIXES:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HDFS-13983](https://issues.apache.org/jira/browse/HDFS-13983) | TestOfflineImageViewer crashes in windows | Major | . | Vinayakumar B | Vinayakumar B |
| [YARN-9744](https://issues.apache.org/jira/browse/YARN-9744) | RollingLevelDBTimelineStore.getEntityByTime fails with NPE | Major | timelineserver | Prabhu Joseph | Prabhu Joseph |
| [HDFS-15113](https://issues.apache.org/jira/browse/HDFS-15113) | Missing IBR when NameNode restart if open processCommand async feature | Blocker | datanode | Xiaoqiao He | Xiaoqiao He |
| [HADOOP-16985](https://issues.apache.org/jira/browse/HADOOP-16985) | Handle release package related issues | Major | . | Vinayakumar B | Vinayakumar B |
| [HADOOP-17116](https://issues.apache.org/jira/browse/HADOOP-17116) | Skip Retry INFO logging on first failover from a proxy | Major | ha | Hanisha Koneru | Hanisha Koneru |
| [HDFS-15651](https://issues.apache.org/jira/browse/HDFS-15651) | Client could not obtain block when DN CommandProcessingThread exit | Major | . | Yiqun Lin | Mingxiang Li |
| [HDFS-15963](https://issues.apache.org/jira/browse/HDFS-15963) | Unreleased volume references cause an infinite loop | Critical | datanode | Shuyan Zhang | Shuyan Zhang |
| [HDFS-14575](https://issues.apache.org/jira/browse/HDFS-14575) | LeaseRenewer#daemon threads leak in DFSClient | Major | . | Tao Yang | Renukaprasad C |
| [HADOOP-17796](https://issues.apache.org/jira/browse/HADOOP-17796) | Upgrade jetty version to 9.4.43 | Major | . | Wei-Chiu Chuang | Renukaprasad C |
| [HDFS-15175](https://issues.apache.org/jira/browse/HDFS-15175) | Multiple CloseOp shared block instance causes the standby namenode to crash when rolling editlog | Critical | . | Yicong Cai | Wan Chang |
| [HDFS-16177](https://issues.apache.org/jira/browse/HDFS-16177) | Bug fix for Util#receiveFile | Minor | . | Tao Li | Tao Li |
| [YARN-10814](https://issues.apache.org/jira/browse/YARN-10814) | YARN shouldn't start with empty hadoop.http.authentication.signature.secret.file | Major | . | Benjamin Teke | Tamas Domok |
| [HADOOP-17874](https://issues.apache.org/jira/browse/HADOOP-17874) | ExceptionsHandler to add terse/suppressed Exceptions in thread-safe manner | Major | . | Viraj Jasani | Viraj Jasani |
| [HADOOP-15129](https://issues.apache.org/jira/browse/HADOOP-15129) | Datanode caches namenode DNS lookup failure and cannot startup | Minor | ipc | Karthik Palaniappan | Chris Nauroth |
| [YARN-10901](https://issues.apache.org/jira/browse/YARN-10901) | Permission checking error on an existing directory in LogAggregationFileController#verifyAndCreateRemoteLogDir | Major | nodemanager | Tamas Domok | Tamas Domok |
| [HDFS-16207](https://issues.apache.org/jira/browse/HDFS-16207) | Remove NN logs stack trace for non-existent xattr query | Major | namenode | Ahmed Hussein | Ahmed Hussein |
| [HDFS-16187](https://issues.apache.org/jira/browse/HDFS-16187) | SnapshotDiff behaviour with Xattrs and Acls is not consistent across NN restarts with checkpointing | Major | snapshots | Srinivasu Majeti | Shashikant Banerjee |
| [HDFS-16198](https://issues.apache.org/jira/browse/HDFS-16198) | Short circuit read leaks Slot objects when InvalidToken exception is thrown | Major | . | Eungsop Yoo | Eungsop Yoo |
| [YARN-10870](https://issues.apache.org/jira/browse/YARN-10870) | Missing user filtering check -\> yarn.webapp.filter-entity-list-by-user for RM Scheduler page | Major | yarn | Siddharth Ahuja | Gergely Pollák |
| [HADOOP-17919](https://issues.apache.org/jira/browse/HADOOP-17919) | Fix command line example in Hadoop Cluster Setup documentation | Minor | documentation | Rintaro Ikeda | Rintaro Ikeda |
| [HDFS-16235](https://issues.apache.org/jira/browse/HDFS-16235) | Deadlock in LeaseRenewer for static remove method | Major | hdfs | angerszhu | angerszhu |
| [HDFS-16181](https://issues.apache.org/jira/browse/HDFS-16181) | [SBN Read] Fix metric of RpcRequestCacheMissAmount can't display when tailEditLog form JN | Critical | . | wangzhaohui | wangzhaohui |
| [HADOOP-17925](https://issues.apache.org/jira/browse/HADOOP-17925) | BUILDING.txt should not encourage to activate docs profile on building binary artifacts | Minor | documentation | Rintaro Ikeda | Masatake Iwasaki |
| [HADOOP-16532](https://issues.apache.org/jira/browse/HADOOP-16532) | Fix TestViewFsTrash to use the correct homeDir. | Minor | test, viewfs | Steve Loughran | Xing Lin |
| [HDFS-16268](https://issues.apache.org/jira/browse/HDFS-16268) | Balancer stuck when moving striped blocks due to NPE | Major | balancer & mover, erasure-coding | Leon Gao | Leon Gao |
| [HDFS-7612](https://issues.apache.org/jira/browse/HDFS-7612) | TestOfflineEditsViewer.testStored() uses incorrect default value for cacheDir | Major | test | Konstantin Shvachko | Michael Kuchenbecker |
| [HDFS-16311](https://issues.apache.org/jira/browse/HDFS-16311) | Metric metadataOperationRate calculation error in DataNodeVolumeMetrics | Major | . | Tao Li | Tao Li |
| [HDFS-16182](https://issues.apache.org/jira/browse/HDFS-16182) | numOfReplicas is given the wrong value in BlockPlacementPolicyDefault$chooseTarget can cause DataStreamer to fail with Heterogeneous Storage | Major | namanode | Max Xie | Max Xie |
| [HADOOP-17999](https://issues.apache.org/jira/browse/HADOOP-17999) | No-op implementation of setWriteChecksum and setVerifyChecksum in ViewFileSystem | Major | . | Abhishek Das | Abhishek Das |
| [HDFS-16329](https://issues.apache.org/jira/browse/HDFS-16329) | Fix log format for BlockManager | Minor | . | Tao Li | Tao Li |
| [HDFS-16330](https://issues.apache.org/jira/browse/HDFS-16330) | Fix incorrect placeholder for Exception logs in DiskBalancer | Major | . | Viraj Jasani | Viraj Jasani |
| [HDFS-16328](https://issues.apache.org/jira/browse/HDFS-16328) | Correct disk balancer param desc | Minor | documentation, hdfs | guophilipse | guophilipse |
| [HDFS-16343](https://issues.apache.org/jira/browse/HDFS-16343) | Add some debug logs when the dfsUsed are not used during Datanode startup | Major | datanode | Mukul Kumar Singh | Mukul Kumar Singh |
| [YARN-10991](https://issues.apache.org/jira/browse/YARN-10991) | Fix to ignore the grouping "[]" for resourcesStr in parseResourcesString method | Minor | distributed-shell | Ashutosh Gupta | Ashutosh Gupta |
| [HADOOP-17975](https://issues.apache.org/jira/browse/HADOOP-17975) | Fallback to simple auth does not work for a secondary DistributedFileSystem instance | Major | ipc | István Fajth | István Fajth |
| [HDFS-16350](https://issues.apache.org/jira/browse/HDFS-16350) | Datanode start time should be set after RPC server starts successfully | Minor | . | Viraj Jasani | Viraj Jasani |
| [YARN-11007](https://issues.apache.org/jira/browse/YARN-11007) | Correct words in YARN documents | Minor | documentation | guophilipse | guophilipse |
| [HDFS-16332](https://issues.apache.org/jira/browse/HDFS-16332) | Expired block token causes slow read due to missing handling in sasl handshake | Major | datanode, dfs, dfsclient | Shinya Yoshida | Shinya Yoshida |
| [YARN-9063](https://issues.apache.org/jira/browse/YARN-9063) | ATS 1.5 fails to start if RollingLevelDb files are corrupt or missing | Major | timelineserver, timelineservice | Tarun Parimi | Ashutosh Gupta |
| [HDFS-16333](https://issues.apache.org/jira/browse/HDFS-16333) | fix balancer bug when transfer an EC block | Major | balancer & mover, erasure-coding | qinyuren | qinyuren |
| [HDFS-16373](https://issues.apache.org/jira/browse/HDFS-16373) | Fix MiniDFSCluster restart in case of multiple namenodes | Major | . | Ayush Saxena | Ayush Saxena |
| [HDFS-16377](https://issues.apache.org/jira/browse/HDFS-16377) | Should CheckNotNull before access FsDatasetSpi | Major | . | Tao Li | Tao Li |
| [YARN-6862](https://issues.apache.org/jira/browse/YARN-6862) | Nodemanager resource usage metrics sometimes are negative | Major | nodemanager | YunFan Zhou | Benjamin Teke |
| [YARN-10178](https://issues.apache.org/jira/browse/YARN-10178) | Global Scheduler async thread crash caused by 'Comparison method violates its general contract | Major | capacity scheduler | tuyu | Andras Gyori |
| [HDFS-16395](https://issues.apache.org/jira/browse/HDFS-16395) | Remove useless NNThroughputBenchmark#dummyActionNoSynch() | Major | benchmarks, namenode | JiangHua Zhu | JiangHua Zhu |
| [HADOOP-18063](https://issues.apache.org/jira/browse/HADOOP-18063) | Remove unused import AbstractJavaKeyStoreProvider in Shell class | Minor | . | JiangHua Zhu | JiangHua Zhu |
| [HDFS-16409](https://issues.apache.org/jira/browse/HDFS-16409) | Fix typo: testHasExeceptionsReturnsCorrectValue -\> testHasExceptionsReturnsCorrectValue | Trivial | . | Ashutosh Gupta | Ashutosh Gupta |
| [HDFS-16408](https://issues.apache.org/jira/browse/HDFS-16408) | Ensure LeaseRecheckIntervalMs is greater than zero | Major | namenode | Jingxuan Fu | Jingxuan Fu |
| [YARN-11055](https://issues.apache.org/jira/browse/YARN-11055) | In cgroups-operations.c some fprintf format strings don't end with "\\n" | Minor | nodemanager | Gera Shegalov | Gera Shegalov |
| [HDFS-16303](https://issues.apache.org/jira/browse/HDFS-16303) | Losing over 100 datanodes in state decommissioning results in full blockage of all datanode decommissioning | Major | . | Kevin Wikant | Kevin Wikant |
| [HDFS-16443](https://issues.apache.org/jira/browse/HDFS-16443) | Fix edge case where DatanodeAdminDefaultMonitor doubly enqueues a DatanodeDescriptor on exception | Major | hdfs | Kevin Wikant | Kevin Wikant |
| [HDFS-16449](https://issues.apache.org/jira/browse/HDFS-16449) | Fix hadoop web site release notes and changelog not available | Minor | documentation | guophilipse | guophilipse |
| [HADOOP-18192](https://issues.apache.org/jira/browse/HADOOP-18192) | Fix multiple\_bindings warning about slf4j-reload4j | Major | . | Masatake Iwasaki | Masatake Iwasaki |
| [HDFS-16479](https://issues.apache.org/jira/browse/HDFS-16479) | EC: NameNode should not send a reconstruction work when the source datanodes are insufficient | Critical | ec, erasure-coding | Yuanbo Liu | Takanobu Asanuma |
| [HDFS-16509](https://issues.apache.org/jira/browse/HDFS-16509) | Fix decommission UnsupportedOperationException: Remove unsupported | Major | namenode | daimin | daimin |
| [HDFS-16456](https://issues.apache.org/jira/browse/HDFS-16456) | EC: Decommission a rack with only on dn will fail when the rack number is equal with replication | Critical | ec, namenode | caozhiqiang | caozhiqiang |
| [HDFS-16437](https://issues.apache.org/jira/browse/HDFS-16437) | ReverseXML processor doesn't accept XML files without the SnapshotDiffSection. | Critical | hdfs | yanbin.zhang | yanbin.zhang |
| [HDFS-16507](https://issues.apache.org/jira/browse/HDFS-16507) | [SBN read] Avoid purging edit log which is in progress | Critical | . | Tao Li | Tao Li |
| [YARN-10720](https://issues.apache.org/jira/browse/YARN-10720) | YARN WebAppProxyServlet should support connection timeout to prevent proxy server from hanging | Critical | . | Qi Zhu | Qi Zhu |
| [HDFS-16428](https://issues.apache.org/jira/browse/HDFS-16428) | Source path with storagePolicy cause wrong typeConsumed while rename | Major | hdfs, namenode | lei w | lei w |
| [YARN-11014](https://issues.apache.org/jira/browse/YARN-11014) | YARN incorrectly validates maximum capacity resources on the validation API | Major | . | Benjamin Teke | Benjamin Teke |
| [YARN-11075](https://issues.apache.org/jira/browse/YARN-11075) | Explicitly declare serialVersionUID in LogMutation class | Major | . | Benjamin Teke | Benjamin Teke |
| [HDFS-11041](https://issues.apache.org/jira/browse/HDFS-11041) | Unable to unregister FsDatasetState MBean if DataNode is shutdown twice | Trivial | datanode | Wei-Chiu Chuang | Wei-Chiu Chuang |
| [HDFS-16538](https://issues.apache.org/jira/browse/HDFS-16538) | EC decoding failed due to not enough valid inputs | Major | erasure-coding | qinyuren | qinyuren |
| [HDFS-16544](https://issues.apache.org/jira/browse/HDFS-16544) | EC decoding failed due to invalid buffer | Major | erasure-coding | qinyuren | qinyuren |
| [HDFS-16546](https://issues.apache.org/jira/browse/HDFS-16546) | Fix UT TestOfflineImageViewer#testReverseXmlWithoutSnapshotDiffSection to branch branch-3.2 | Major | test | daimin | daimin |
| [HDFS-16552](https://issues.apache.org/jira/browse/HDFS-16552) | Fix NPE for TestBlockManager | Major | . | Tao Li | Tao Li |
| [MAPREDUCE-7246](https://issues.apache.org/jira/browse/MAPREDUCE-7246) | In MapredAppMasterRest#Mapreduce\_Application\_Master\_Info\_API, the datatype of appId should be "string". | Major | documentation | jenny | Ashutosh Gupta |
| [YARN-10187](https://issues.apache.org/jira/browse/YARN-10187) | Removing hadoop-yarn-project/hadoop-yarn/README as it is no longer maintained. | Minor | documentation | N Sanketh Reddy | Ashutosh Gupta |
| [HDFS-16185](https://issues.apache.org/jira/browse/HDFS-16185) | Fix comment in LowRedundancyBlocks.java | Minor | documentation | Akira Ajisaka | Ashutosh Gupta |
| [HADOOP-17479](https://issues.apache.org/jira/browse/HADOOP-17479) | Fix the examples of hadoop config prefix | Minor | documentation | Akira Ajisaka | Ashutosh Gupta |
| [HDFS-16579](https://issues.apache.org/jira/browse/HDFS-16579) | Fix build failure for TestBlockManager on branch-3.2 | Major | . | Tao Li | Tao Li |
| [YARN-11092](https://issues.apache.org/jira/browse/YARN-11092) | Upgrade jquery ui to 1.13.1 | Major | . | D M Murali Krishna Reddy | Ashutosh Gupta |
| [YARN-11133](https://issues.apache.org/jira/browse/YARN-11133) | YarnClient gets the wrong EffectiveMinCapacity value | Major | api | Zilong Zhu | Zilong Zhu |
| [YARN-10850](https://issues.apache.org/jira/browse/YARN-10850) | TimelineService v2 lists containers for all attempts when filtering for one | Major | timelinereader | Benjamin Teke | Benjamin Teke |
| [YARN-11126](https://issues.apache.org/jira/browse/YARN-11126) | ZKConfigurationStore Java deserialisation vulnerability | Major | yarn | Tamas Domok | Tamas Domok |
| [YARN-11162](https://issues.apache.org/jira/browse/YARN-11162) | Set the zk acl for nodes created by ZKConfigurationStore. | Major | resourcemanager | Owen O'Malley | Owen O'Malley |
| [HDFS-16586](https://issues.apache.org/jira/browse/HDFS-16586) | Purge FsDatasetAsyncDiskService threadgroup; it causes BPServiceActor$CommandProcessingThread IllegalThreadStateException 'fatal exception and exit' | Major | datanode | Michael Stack | Michael Stack |
| [HADOOP-18251](https://issues.apache.org/jira/browse/HADOOP-18251) | Fix failure of extracting JIRA id from commit message in git\_jira\_fix\_version\_check.py | Minor | build | Masatake Iwasaki | Masatake Iwasaki |
| [HDFS-16583](https://issues.apache.org/jira/browse/HDFS-16583) | DatanodeAdminDefaultMonitor can get stuck in an infinite loop | Major | . | Stephen O'Donnell | Stephen O'Donnell |
| [HDFS-16623](https://issues.apache.org/jira/browse/HDFS-16623) | IllegalArgumentException in LifelineSender | Major | . | ZanderXu | ZanderXu |
| [HDFS-16064](https://issues.apache.org/jira/browse/HDFS-16064) | Determine when to invalidate corrupt replicas based on number of usable replicas | Major | datanode, namenode | Kevin Wikant | Kevin Wikant |
| [HADOOP-18100](https://issues.apache.org/jira/browse/HADOOP-18100) | Change scope of inner classes in InodeTree to make them accessible outside package | Major | . | Abhishek Das | Abhishek Das |
| [HADOOP-18334](https://issues.apache.org/jira/browse/HADOOP-18334) | Fix create-release to address removal of GPG\_AGENT\_INFO in branch-3.2 | Major | build | Masatake Iwasaki | Masatake Iwasaki |
### TESTS:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [MAPREDUCE-7342](https://issues.apache.org/jira/browse/MAPREDUCE-7342) | Stop RMService in TestClientRedirect.testRedirect() | Minor | . | Zhengxi Li | Zhengxi Li |
| [MAPREDUCE-7311](https://issues.apache.org/jira/browse/MAPREDUCE-7311) | Fix non-idempotent test in TestTaskProgressReporter | Minor | . | Zhengxi Li | Zhengxi Li |
| [HDFS-15862](https://issues.apache.org/jira/browse/HDFS-15862) | Make TestViewfsWithNfs3.testNfsRenameSingleNN() idempotent | Minor | nfs | Zhengxi Li | Zhengxi Li |
### SUB-TASKS:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HDFS-15457](https://issues.apache.org/jira/browse/HDFS-15457) | TestFsDatasetImpl fails intermittently | Major | hdfs | Ahmed Hussein | Ahmed Hussein |
| [HDFS-15818](https://issues.apache.org/jira/browse/HDFS-15818) | Fix TestFsDatasetImpl.testReadLockCanBeDisabledByConfig | Minor | test | Leon Gao | Leon Gao |
| [YARN-10503](https://issues.apache.org/jira/browse/YARN-10503) | Support queue capacity in terms of absolute resources with custom resourceType. | Critical | . | Qi Zhu | Qi Zhu |
| [HADOOP-17126](https://issues.apache.org/jira/browse/HADOOP-17126) | implement non-guava Precondition checkNotNull | Major | . | Ahmed Hussein | Ahmed Hussein |
| [HADOOP-17929](https://issues.apache.org/jira/browse/HADOOP-17929) | implement non-guava Precondition checkArgument | Major | . | Ahmed Hussein | Ahmed Hussein |
| [HADOOP-17947](https://issues.apache.org/jira/browse/HADOOP-17947) | Provide alternative to Guava VisibleForTesting | Major | . | Viraj Jasani | Viraj Jasani |
| [HADOOP-17930](https://issues.apache.org/jira/browse/HADOOP-17930) | implement non-guava Precondition checkState | Major | . | Ahmed Hussein | Ahmed Hussein |
| [HADOOP-17374](https://issues.apache.org/jira/browse/HADOOP-17374) | AliyunOSS: support ListObjectsV2 | Major | fs/oss | wujinhu | wujinhu |
| [HDFS-16336](https://issues.apache.org/jira/browse/HDFS-16336) | De-flake TestRollingUpgrade#testRollback | Minor | hdfs, test | Kevin Wikant | Viraj Jasani |
| [HDFS-16171](https://issues.apache.org/jira/browse/HDFS-16171) | De-flake testDecommissionStatus | Major | . | Viraj Jasani | Viraj Jasani |
| [HDFS-16169](https://issues.apache.org/jira/browse/HDFS-16169) | Fix TestBlockTokenWithDFSStriped#testEnd2End failure | Major | test | Hui Fei | secfree |
| [HDFS-16484](https://issues.apache.org/jira/browse/HDFS-16484) | [SPS]: Fix an infinite loop bug in SPSPathIdProcessor thread | Major | . | qinyuren | qinyuren |
| [HADOOP-16663](https://issues.apache.org/jira/browse/HADOOP-16663) | Backport "HADOOP-16560 [YARN] use protobuf-maven-plugin to generate protobuf classes" to all active branches | Major | . | Duo Zhang | Duo Zhang |
| [HADOOP-16664](https://issues.apache.org/jira/browse/HADOOP-16664) | Backport "HADOOP-16561 [MAPREDUCE] use protobuf-maven-plugin to generate protobuf classes" to all active branches | Major | . | Duo Zhang | Duo Zhang |
### OTHER:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HDFS-16298](https://issues.apache.org/jira/browse/HDFS-16298) | Improve error msg for BlockMissingException | Minor | . | Tao Li | Tao Li |
| [HDFS-16312](https://issues.apache.org/jira/browse/HDFS-16312) | Fix typo for DataNodeVolumeMetrics and ProfilingFileIoEvents | Minor | . | Tao Li | Tao Li |
| [HDFS-16326](https://issues.apache.org/jira/browse/HDFS-16326) | Simplify the code for DiskBalancer | Minor | . | Tao Li | Tao Li |
| [HDFS-16339](https://issues.apache.org/jira/browse/HDFS-16339) | Show the threshold when mover threads quota is exceeded | Minor | . | Tao Li | Tao Li |
| [YARN-10820](https://issues.apache.org/jira/browse/YARN-10820) | Make GetClusterNodesRequestPBImpl thread safe | Major | client | Prabhu Joseph | SwathiChandrashekar |
| [HADOOP-13464](https://issues.apache.org/jira/browse/HADOOP-13464) | update GSON to 2.7+ | Minor | build | Sean Busbey | Igor Dvorzhak |
| [HADOOP-18191](https://issues.apache.org/jira/browse/HADOOP-18191) | Log retry count while handling exceptions in RetryInvocationHandler | Minor | . | Viraj Jasani | Viraj Jasani |
| [HDFS-16551](https://issues.apache.org/jira/browse/HDFS-16551) | Backport HADOOP-17588 to 3.3 and other active old branches. | Major | . | Renukaprasad C | Renukaprasad C |
| [HDFS-16618](https://issues.apache.org/jira/browse/HDFS-16618) | sync\_file\_range error should include more volume and file info | Minor | . | Viraj Jasani | Viraj Jasani |
| [HADOOP-18300](https://issues.apache.org/jira/browse/HADOOP-18300) | Update Gson to 2.9.0 | Minor | build | Igor Dvorzhak | Igor Dvorzhak |

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# Apache Hadoop 3.2.4 Release Notes
These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.
---
* [YARN-10820](https://issues.apache.org/jira/browse/YARN-10820) | *Major* | **Make GetClusterNodesRequestPBImpl thread safe**
Added syncronization so that the "yarn node list" command does not fail intermittently
---
* [YARN-8234](https://issues.apache.org/jira/browse/YARN-8234) | *Critical* | **Improve RM system metrics publisher's performance by pushing events to timeline server in batch**
When Timeline Service V1 or V1.5 is used, if "yarn.resourcemanager.system-metrics-publisher.timeline-server-v1.enable-batch" is set to true, ResourceManager sends timeline events in batch. The default value is false. If this functionality is enabled, the maximum number that events published in batch is configured by "yarn.resourcemanager.system-metrics-publisher.timeline-server-v1.batch-size". The default value is 1000. The interval of publishing events can be configured by "yarn.resourcemanager.system-metrics-publisher.timeline-server-v1.interval-seconds". By default, it is set to 60 seconds.
---
* [HADOOP-18088](https://issues.apache.org/jira/browse/HADOOP-18088) | *Major* | **Replace log4j 1.x with reload4j**
log4j 1 was replaced with reload4j which is fork of log4j 1.2.17 with the goal of fixing pressing security issues.
If you are depending on the hadoop artifacts in your build were explicitly excluding log4 artifacts, and now want to exclude the reload4j files, you will need to update your exclusion lists
\<exclusion\>
\<groupId\>org.slf4j\</groupId\>
\<artifactId\>slf4j-reload4j\</artifactId\>
\</exclusion\>
\<exclusion\>
\<groupId\>ch.qos.reload4j\</groupId\>
\<artifactId\>reload4j\</artifactId\>
\</exclusion\>

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