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# Apache Hadoop Changelog
## Release 3.3.2 - 2022-02-21
### IMPORTANT ISSUES:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HDFS-15814](https://issues.apache.org/jira/browse/HDFS-15814) | Make some parameters configurable for DataNodeDiskMetrics | Major | hdfs | tomscut | tomscut |
### NEW FEATURES:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HDFS-15288](https://issues.apache.org/jira/browse/HDFS-15288) | Add Available Space Rack Fault Tolerant BPP | Major | . | Ayush Saxena | Ayush Saxena |
| [HDFS-16048](https://issues.apache.org/jira/browse/HDFS-16048) | RBF: Print network topology on the router web | Minor | . | tomscut | tomscut |
| [HDFS-16337](https://issues.apache.org/jira/browse/HDFS-16337) | Show start time of Datanode on Web | Minor | . | tomscut | tomscut |
| [HADOOP-17979](https://issues.apache.org/jira/browse/HADOOP-17979) | Interface EtagSource to allow FileStatus subclasses to provide etags | Major | fs, fs/azure, fs/s3 | Steve Loughran | Steve Loughran |
### IMPROVEMENTS:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [YARN-10123](https://issues.apache.org/jira/browse/YARN-10123) | Error message around yarn app -stop/start can be improved to highlight that an implementation at framework level is needed for the stop/start functionality to work | Minor | client, documentation | Siddharth Ahuja | Siddharth Ahuja |
| [HADOOP-17756](https://issues.apache.org/jira/browse/HADOOP-17756) | Increase precommit job timeout from 20 hours to 24 hours. | Major | build | Takanobu Asanuma | Takanobu Asanuma |
| [HDFS-16073](https://issues.apache.org/jira/browse/HDFS-16073) | Remove redundant RPC requests for getFileLinkInfo in ClientNamenodeProtocolTranslatorPB | Minor | . | lei w | lei w |
| [HDFS-16074](https://issues.apache.org/jira/browse/HDFS-16074) | Remove an expensive debug string concatenation | Major | . | Wei-Chiu Chuang | Wei-Chiu Chuang |
| [HDFS-16080](https://issues.apache.org/jira/browse/HDFS-16080) | RBF: Invoking method in all locations should break the loop after successful result | Minor | . | Viraj Jasani | Viraj Jasani |
| [HDFS-16075](https://issues.apache.org/jira/browse/HDFS-16075) | Use empty array constants present in StorageType and DatanodeInfo to avoid creating redundant objects | Major | . | Viraj Jasani | Viraj Jasani |
| [MAPREDUCE-7354](https://issues.apache.org/jira/browse/MAPREDUCE-7354) | Use empty array constants present in TaskCompletionEvent to avoid creating redundant objects | Minor | . | Viraj Jasani | Viraj Jasani |
| [HDFS-16082](https://issues.apache.org/jira/browse/HDFS-16082) | Avoid non-atomic operations on exceptionsSinceLastBalance and failedTimesSinceLastSuccessfulBalance in Balancer | Major | . | Viraj Jasani | Viraj Jasani |
| [HDFS-16076](https://issues.apache.org/jira/browse/HDFS-16076) | Avoid using slow DataNodes for reading by sorting locations | Major | hdfs | tomscut | tomscut |
| [HDFS-16085](https://issues.apache.org/jira/browse/HDFS-16085) | Move the getPermissionChecker out of the read lock | Minor | . | tomscut | tomscut |
| [YARN-10834](https://issues.apache.org/jira/browse/YARN-10834) | Intra-queue preemption: apps that don't use defined custom resource won't be preempted. | Major | . | Eric Payne | Eric Payne |
| [HADOOP-17777](https://issues.apache.org/jira/browse/HADOOP-17777) | Update clover-maven-plugin version from 3.3.0 to 4.4.1 | Major | . | Wanqiang Ji | Wanqiang Ji |
| [HDFS-16090](https://issues.apache.org/jira/browse/HDFS-16090) | Fine grained locking for datanodeNetworkCounts | Major | . | Viraj Jasani | Viraj Jasani |
| [HADOOP-17749](https://issues.apache.org/jira/browse/HADOOP-17749) | Remove lock contention in SelectorPool of SocketIOWithTimeout | Major | common | Xuesen Liang | Xuesen Liang |
| [HADOOP-17775](https://issues.apache.org/jira/browse/HADOOP-17775) | Remove JavaScript package from Docker environment | Major | build | Masatake Iwasaki | Masatake Iwasaki |
| [HADOOP-17402](https://issues.apache.org/jira/browse/HADOOP-17402) | Add GCS FS impl reference to core-default.xml | Major | fs | Rafal Wojdyla | Rafal Wojdyla |
| [HADOOP-17794](https://issues.apache.org/jira/browse/HADOOP-17794) | Add a sample configuration to use ZKDelegationTokenSecretManager in Hadoop KMS | Major | documentation, kms, security | Akira Ajisaka | Akira Ajisaka |
| [HDFS-16122](https://issues.apache.org/jira/browse/HDFS-16122) | Fix DistCpContext#toString() | Minor | . | tomscut | tomscut |
| [HADOOP-12665](https://issues.apache.org/jira/browse/HADOOP-12665) | Document hadoop.security.token.service.use\_ip | Major | documentation | Arpit Agarwal | Akira Ajisaka |
| [YARN-10456](https://issues.apache.org/jira/browse/YARN-10456) | RM PartitionQueueMetrics records are named QueueMetrics in Simon metrics registry | Major | resourcemanager | Eric Payne | Eric Payne |
| [HDFS-15650](https://issues.apache.org/jira/browse/HDFS-15650) | Make the socket timeout for computing checksum of striped blocks configurable | Minor | datanode, ec, erasure-coding | Yushi Hayasaka | Yushi Hayasaka |
| [YARN-10858](https://issues.apache.org/jira/browse/YARN-10858) | [UI2] YARN-10826 breaks Queue view | Major | yarn-ui-v2 | Andras Gyori | Masatake Iwasaki |
| [HADOOP-16290](https://issues.apache.org/jira/browse/HADOOP-16290) | Enable RpcMetrics units to be configurable | Major | ipc, metrics | Erik Krogen | Viraj Jasani |
| [YARN-10860](https://issues.apache.org/jira/browse/YARN-10860) | Make max container per heartbeat configs refreshable | Major | . | Eric Badger | Eric Badger |
| [HADOOP-17813](https://issues.apache.org/jira/browse/HADOOP-17813) | Checkstyle - Allow line length: 100 | Major | . | Akira Ajisaka | Viraj Jasani |
| [HADOOP-17811](https://issues.apache.org/jira/browse/HADOOP-17811) | ABFS ExponentialRetryPolicy doesn't pick up configuration values | Minor | documentation, fs/azure | Brian Frank Loss | Brian Frank Loss |
| [HADOOP-17819](https://issues.apache.org/jira/browse/HADOOP-17819) | Add extensions to ProtobufRpcEngine RequestHeaderProto | Major | common | Hector Sandoval Chaverri | Hector Sandoval Chaverri |
| [HDFS-15936](https://issues.apache.org/jira/browse/HDFS-15936) | Solve BlockSender#sendPacket() does not record SocketTimeout exception | Minor | . | JiangHua Zhu | JiangHua Zhu |
| [HDFS-16153](https://issues.apache.org/jira/browse/HDFS-16153) | Avoid evaluation of LOG.debug statement in QuorumJournalManager | Trivial | . | wangzhaohui | wangzhaohui |
| [HDFS-16154](https://issues.apache.org/jira/browse/HDFS-16154) | TestMiniJournalCluster failing intermittently because of not reseting UserGroupInformation completely | Minor | . | wangzhaohui | wangzhaohui |
| [HADOOP-17837](https://issues.apache.org/jira/browse/HADOOP-17837) | Make it easier to debug UnknownHostExceptions from NetUtils.connect | Minor | . | Bryan Beaudreault | Bryan Beaudreault |
| [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-16210](https://issues.apache.org/jira/browse/HDFS-16210) | RBF: Add the option of refreshCallQueue to RouterAdmin | Major | . | Janus Chow | Janus Chow |
| [HDFS-16221](https://issues.apache.org/jira/browse/HDFS-16221) | RBF: Add usage of refreshCallQueue for Router | Major | . | Janus Chow | Janus Chow |
| [HDFS-16223](https://issues.apache.org/jira/browse/HDFS-16223) | AvailableSpaceRackFaultTolerantBlockPlacementPolicy should use chooseRandomWithStorageTypeTwoTrial() for better performance. | Major | . | Ayush Saxena | Ayush Saxena |
| [HADOOP-17893](https://issues.apache.org/jira/browse/HADOOP-17893) | Improve PrometheusSink for Namenode TopMetrics | Major | metrics | Max Xie | Max Xie |
| [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 |
| [HADOOP-17939](https://issues.apache.org/jira/browse/HADOOP-17939) | Support building on Apple Silicon | Major | build, common | Dongjoon Hyun | Dongjoon Hyun |
| [HADOOP-17941](https://issues.apache.org/jira/browse/HADOOP-17941) | Update xerces to 2.12.1 | Minor | . | Zhongwei Zhu | Zhongwei Zhu |
| [HDFS-16246](https://issues.apache.org/jira/browse/HDFS-16246) | Print lockWarningThreshold in InstrumentedLock#logWarning and InstrumentedLock#logWaitWarning | Minor | . | tomscut | tomscut |
| [HDFS-16252](https://issues.apache.org/jira/browse/HDFS-16252) | Correct docs for dfs.http.client.retry.policy.spec | Major | . | Stephen O'Donnell | Stephen O'Donnell |
| [HDFS-16241](https://issues.apache.org/jira/browse/HDFS-16241) | Standby close reconstruction thread | Major | . | zhanghuazong | zhanghuazong |
| [HADOOP-17974](https://issues.apache.org/jira/browse/HADOOP-17974) | Fix the import statements in hadoop-aws module | Minor | build, fs/azure | Tamas Domok | |
| [HDFS-16277](https://issues.apache.org/jira/browse/HDFS-16277) | Improve decision in AvailableSpaceBlockPlacementPolicy | Major | block placement | guophilipse | guophilipse |
| [HADOOP-17770](https://issues.apache.org/jira/browse/HADOOP-17770) | WASB : Support disabling buffered reads in positional reads | Major | . | Anoop Sam John | Anoop Sam John |
| [HDFS-16282](https://issues.apache.org/jira/browse/HDFS-16282) | Duplicate generic usage information to hdfs debug command | Minor | tools | daimin | daimin |
| [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 | . | tomscut | tomscut |
| [HDFS-16286](https://issues.apache.org/jira/browse/HDFS-16286) | Debug tool to verify the correctness of erasure coding on file | Minor | erasure-coding, tools | daimin | daimin |
| [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 | . | tomscut | tomscut |
| [HDFS-16301](https://issues.apache.org/jira/browse/HDFS-16301) | Improve BenchmarkThroughput#SIZE naming standardization | Minor | benchmarks, test | JiangHua Zhu | JiangHua Zhu |
| [HDFS-16287](https://issues.apache.org/jira/browse/HDFS-16287) | Support to make dfs.namenode.avoid.read.slow.datanode reconfigurable | Major | . | Haiyang Hu | Haiyang Hu |
| [HDFS-16321](https://issues.apache.org/jira/browse/HDFS-16321) | Fix invalid config in TestAvailableSpaceRackFaultTolerantBPP | Minor | test | guophilipse | guophilipse |
| [HDFS-16315](https://issues.apache.org/jira/browse/HDFS-16315) | Add metrics related to Transfer and NativeCopy for DataNode | Major | . | tomscut | tomscut |
| [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-16344](https://issues.apache.org/jira/browse/HDFS-16344) | Improve DirectoryScanner.Stats#toString | Major | . | tomscut | tomscut |
| [HADOOP-18023](https://issues.apache.org/jira/browse/HADOOP-18023) | Allow cp command to run with multi threads. | Major | fs | Chengwei Wang | Chengwei Wang |
| [HDFS-16314](https://issues.apache.org/jira/browse/HDFS-16314) | Support to make dfs.namenode.block-placement-policy.exclude-slow-nodes.enabled reconfigurable | Major | . | Haiyang Hu | Haiyang Hu |
| [HADOOP-18026](https://issues.apache.org/jira/browse/HADOOP-18026) | Fix default value of Magic committer | Minor | common | guophilipse | guophilipse |
| [HDFS-16345](https://issues.apache.org/jira/browse/HDFS-16345) | Fix test cases fail in TestBlockStoragePolicy | Major | build | guophilipse | guophilipse |
| [HADOOP-18040](https://issues.apache.org/jira/browse/HADOOP-18040) | Use maven.test.failure.ignore instead of ignoreTestFailure | Major | build | Akira Ajisaka | Akira Ajisaka |
| [HADOOP-17643](https://issues.apache.org/jira/browse/HADOOP-17643) | WASB : Make metadata checks case insensitive | Major | . | Anoop Sam John | Anoop Sam John |
| [HADOOP-18033](https://issues.apache.org/jira/browse/HADOOP-18033) | Upgrade fasterxml Jackson to 2.13.0 | Major | build | Akira Ajisaka | Viraj Jasani |
| [HDFS-16327](https://issues.apache.org/jira/browse/HDFS-16327) | Make dfs.namenode.max.slowpeer.collect.nodes reconfigurable | Major | . | tomscut | tomscut |
| [HDFS-16375](https://issues.apache.org/jira/browse/HDFS-16375) | The FBR lease ID should be exposed to the log | Major | . | tomscut | tomscut |
| [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 |
| [HADOOP-18052](https://issues.apache.org/jira/browse/HADOOP-18052) | Support Apple Silicon in start-build-env.sh | Major | build | Akira Ajisaka | Akira Ajisaka |
| [HADOOP-18056](https://issues.apache.org/jira/browse/HADOOP-18056) | DistCp: Filter duplicates in the source paths | Major | . | Ayush Saxena | Ayush Saxena |
| [HADOOP-18065](https://issues.apache.org/jira/browse/HADOOP-18065) | ExecutorHelper.logThrowableFromAfterExecute() is too noisy. | Minor | . | Mukund Thakur | Mukund Thakur |
| [HDFS-16043](https://issues.apache.org/jira/browse/HDFS-16043) | Add markedDeleteBlockScrubberThread to delete blocks asynchronously | Major | hdfs, namanode | Xiangyi Zhu | Xiangyi Zhu |
| [HADOOP-18094](https://issues.apache.org/jira/browse/HADOOP-18094) | Disable S3A auditing by default. | Blocker | fs/s3 | Steve Loughran | Steve Loughran |
### BUG FIXES:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [YARN-10438](https://issues.apache.org/jira/browse/YARN-10438) | Handle null containerId in ClientRMService#getContainerReport() | Major | resourcemanager | Raghvendra Singh | Shubham Gupta |
| [YARN-10428](https://issues.apache.org/jira/browse/YARN-10428) | Zombie applications in the YARN queue using FAIR + sizebasedweight | Critical | capacityscheduler | Guang Yang | Andras Gyori |
| [HDFS-15916](https://issues.apache.org/jira/browse/HDFS-15916) | DistCp: Backward compatibility: Distcp fails from Hadoop 3 to Hadoop 2 for snapshotdiff | Major | distcp | Srinivasu Majeti | Ayush Saxena |
| [HDFS-15977](https://issues.apache.org/jira/browse/HDFS-15977) | Call explicit\_bzero only if it is available | Major | libhdfs++ | Akira Ajisaka | Akira Ajisaka |
| [HADOOP-14922](https://issues.apache.org/jira/browse/HADOOP-14922) | Build of Mapreduce Native Task module fails with unknown opcode "bswap" | Major | . | Anup Halarnkar | Anup Halarnkar |
| [HADOOP-17700](https://issues.apache.org/jira/browse/HADOOP-17700) | ExitUtil#halt info log should log HaltException | Major | . | Viraj Jasani | Viraj Jasani |
| [YARN-10770](https://issues.apache.org/jira/browse/YARN-10770) | container-executor permission is wrong in SecureContainer.md | Major | documentation | Akira Ajisaka | Siddharth Ahuja |
| [YARN-10691](https://issues.apache.org/jira/browse/YARN-10691) | DominantResourceCalculator isInvalidDivisor should consider only countable resource types | Major | . | Bilwa S T | Bilwa S T |
| [HDFS-16031](https://issues.apache.org/jira/browse/HDFS-16031) | Possible Resource Leak in org.apache.hadoop.hdfs.server.aliasmap#InMemoryAliasMap | Major | . | Narges Shadab | Narges Shadab |
| [MAPREDUCE-7348](https://issues.apache.org/jira/browse/MAPREDUCE-7348) | TestFrameworkUploader#testNativeIO fails | Major | test | Akira Ajisaka | Akira Ajisaka |
| [HDFS-15915](https://issues.apache.org/jira/browse/HDFS-15915) | Race condition with async edits logging due to updating txId outside of the namesystem log | Major | hdfs, namenode | Konstantin Shvachko | Konstantin Shvachko |
| [HDFS-16040](https://issues.apache.org/jira/browse/HDFS-16040) | RpcQueueTime metric counts requeued calls as unique events. | Major | hdfs | Simbarashe Dzinamarira | Simbarashe Dzinamarira |
| [MAPREDUCE-7287](https://issues.apache.org/jira/browse/MAPREDUCE-7287) | Distcp will delete existing file , If we use "-delete and -update" options and distcp file. | Major | distcp | zhengchenyu | zhengchenyu |
| [HDFS-15998](https://issues.apache.org/jira/browse/HDFS-15998) | Fix NullPointException In listOpenFiles | Major | . | Haiyang Hu | Haiyang Hu |
| [HDFS-16050](https://issues.apache.org/jira/browse/HDFS-16050) | Some dynamometer tests fail | Major | test | Akira Ajisaka | Akira Ajisaka |
| [HADOOP-17631](https://issues.apache.org/jira/browse/HADOOP-17631) | Configuration ${env.VAR:-FALLBACK} should eval FALLBACK when restrictSystemProps=true | Minor | common | Steve Loughran | Steve Loughran |
| [YARN-10809](https://issues.apache.org/jira/browse/YARN-10809) | testWithHbaseConfAtHdfsFileSystem consistently failing | Major | . | Viraj Jasani | Viraj Jasani |
| [YARN-10803](https://issues.apache.org/jira/browse/YARN-10803) | [JDK 11] TestRMFailoverProxyProvider and TestNoHaRMFailoverProxyProvider fails by ClassCastException | Major | test | Akira Ajisaka | Akira Ajisaka |
| [HDFS-16057](https://issues.apache.org/jira/browse/HDFS-16057) | Make sure the order for location in ENTERING\_MAINTENANCE state | Minor | . | tomscut | tomscut |
| [HDFS-16055](https://issues.apache.org/jira/browse/HDFS-16055) | Quota is not preserved in snapshot INode | Major | hdfs | Siyao Meng | Siyao Meng |
| [HDFS-16068](https://issues.apache.org/jira/browse/HDFS-16068) | WebHdfsFileSystem has a possible connection leak in connection with HttpFS | Major | . | Takanobu Asanuma | Takanobu Asanuma |
| [YARN-10767](https://issues.apache.org/jira/browse/YARN-10767) | Yarn Logs Command retrying on Standby RM for 30 times | Major | . | D M Murali Krishna Reddy | D M Murali Krishna Reddy |
| [HADOOP-17760](https://issues.apache.org/jira/browse/HADOOP-17760) | Delete hadoop.ssl.enabled and dfs.https.enable from docs and core-default.xml | Major | documentation | Takanobu Asanuma | Takanobu Asanuma |
| [HDFS-13671](https://issues.apache.org/jira/browse/HDFS-13671) | Namenode deletes large dir slowly caused by FoldedTreeSet#removeAndGet | Major | . | Yiqun Lin | Haibin Huang |
| [HDFS-16061](https://issues.apache.org/jira/browse/HDFS-16061) | DFTestUtil.waitReplication can produce false positives | Major | hdfs | Ahmed Hussein | Ahmed Hussein |
| [HDFS-14575](https://issues.apache.org/jira/browse/HDFS-14575) | LeaseRenewer#daemon threads leak in DFSClient | Major | . | Tao Yang | Renukaprasad C |
| [YARN-10826](https://issues.apache.org/jira/browse/YARN-10826) | [UI2] Upgrade Node.js to at least v12.22.1 | Major | yarn-ui-v2 | Akira Ajisaka | Masatake Iwasaki |
| [HADOOP-17769](https://issues.apache.org/jira/browse/HADOOP-17769) | Upgrade JUnit to 4.13.2 | Major | . | Ahmed Hussein | Ahmed Hussein |
| [YARN-10824](https://issues.apache.org/jira/browse/YARN-10824) | Title not set for JHS and NM webpages | Major | . | Rajshree Mishra | Bilwa S T |
| [HDFS-16092](https://issues.apache.org/jira/browse/HDFS-16092) | Avoid creating LayoutFlags redundant objects | Major | . | Viraj Jasani | Viraj Jasani |
| [HADOOP-17764](https://issues.apache.org/jira/browse/HADOOP-17764) | S3AInputStream read does not re-open the input stream on the second read retry attempt | Major | fs/s3 | Zamil Majdy | Zamil Majdy |
| [HDFS-16109](https://issues.apache.org/jira/browse/HDFS-16109) | Fix flaky some unit tests since they offen timeout | Minor | test | tomscut | tomscut |
| [HDFS-16108](https://issues.apache.org/jira/browse/HDFS-16108) | Incorrect log placeholders used in JournalNodeSyncer | Minor | . | Viraj Jasani | Viraj Jasani |
| [MAPREDUCE-7353](https://issues.apache.org/jira/browse/MAPREDUCE-7353) | Mapreduce job fails when NM is stopped | Major | . | Bilwa S T | Bilwa S T |
| [HDFS-16121](https://issues.apache.org/jira/browse/HDFS-16121) | Iterative snapshot diff report can generate duplicate records for creates, deletes and Renames | Major | snapshots | Srinivasu Majeti | Shashikant Banerjee |
| [HDFS-15796](https://issues.apache.org/jira/browse/HDFS-15796) | ConcurrentModificationException error happens on NameNode occasionally | Critical | hdfs | Daniel Ma | Daniel Ma |
| [HADOOP-17793](https://issues.apache.org/jira/browse/HADOOP-17793) | Better token validation | Major | . | Artem Smotrakov | Artem Smotrakov |
| [HDFS-16042](https://issues.apache.org/jira/browse/HDFS-16042) | DatanodeAdminMonitor scan should be delay based | Major | datanode | Ahmed Hussein | Ahmed Hussein |
| [HADOOP-17803](https://issues.apache.org/jira/browse/HADOOP-17803) | Remove WARN logging from LoggingAuditor when executing a request outside an audit span | Major | fs/s3 | Mehakmeet Singh | Mehakmeet Singh |
| [HDFS-16127](https://issues.apache.org/jira/browse/HDFS-16127) | Improper pipeline close recovery causes a permanent write failure or data loss. | Major | . | Kihwal Lee | Kihwal Lee |
| [HADOOP-17028](https://issues.apache.org/jira/browse/HADOOP-17028) | ViewFS should initialize target filesystems lazily | Major | client-mounts, fs, viewfs | Uma Maheswara Rao G | Abhishek Das |
| [HADOOP-17801](https://issues.apache.org/jira/browse/HADOOP-17801) | No error message reported when bucket doesn't exist in S3AFS | Major | fs/s3 | Mehakmeet Singh | Mehakmeet Singh |
| [HADOOP-17796](https://issues.apache.org/jira/browse/HADOOP-17796) | Upgrade jetty version to 9.4.43 | Major | . | Wei-Chiu Chuang | Renukaprasad C |
| [HDFS-12920](https://issues.apache.org/jira/browse/HDFS-12920) | HDFS default value change (with adding time unit) breaks old version MR tarball work with Hadoop 3.x | Critical | configuration, hdfs | Junping Du | Akira Ajisaka |
| [HDFS-16145](https://issues.apache.org/jira/browse/HDFS-16145) | CopyListing fails with FNF exception with snapshot diff | Major | distcp | Shashikant Banerjee | Shashikant Banerjee |
| [YARN-10813](https://issues.apache.org/jira/browse/YARN-10813) | Set default capacity of root for node labels | Major | . | Andras Gyori | Andras Gyori |
| [HDFS-16144](https://issues.apache.org/jira/browse/HDFS-16144) | Revert HDFS-15372 (Files in snapshots no longer see attribute provider permissions) | Major | . | Stephen O'Donnell | Stephen O'Donnell |
| [HADOOP-17817](https://issues.apache.org/jira/browse/HADOOP-17817) | HADOOP-17817. S3A to raise IOE if both S3-CSE and S3Guard enabled | Major | fs/s3 | Mehakmeet Singh | Mehakmeet Singh |
| [YARN-9551](https://issues.apache.org/jira/browse/YARN-9551) | TestTimelineClientV2Impl.testSyncCall fails intermittently | Minor | ATSv2, test | Prabhu Joseph | Andras Gyori |
| [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 |
| [YARN-10869](https://issues.apache.org/jira/browse/YARN-10869) | CS considers only the default maximum-allocation-mb/vcore property as a maximum when it creates dynamic queues | Major | capacity scheduler | Benjamin Teke | Benjamin Teke |
| [YARN-10789](https://issues.apache.org/jira/browse/YARN-10789) | RM HA startup can fail due to race conditions in ZKConfigurationStore | Major | . | Tarun Parimi | Tarun Parimi |
| [HADOOP-17812](https://issues.apache.org/jira/browse/HADOOP-17812) | NPE in S3AInputStream read() after failure to reconnect to store | Major | fs/s3 | Bobby Wang | Bobby Wang |
| [YARN-6221](https://issues.apache.org/jira/browse/YARN-6221) | Entities missing from ATS when summary log file info got returned to the ATS before the domain log | Critical | yarn | Sushmitha Sreenivasan | Xiaomin Zhang |
| [MAPREDUCE-7258](https://issues.apache.org/jira/browse/MAPREDUCE-7258) | HistoryServerRest.html#Task\_Counters\_API, modify the jobTaskCounters's itemName from "taskcounterGroup" to "taskCounterGroup". | Minor | documentation | jenny | jenny |
| [HADOOP-17370](https://issues.apache.org/jira/browse/HADOOP-17370) | Upgrade commons-compress to 1.21 | Major | common | Dongjoon Hyun | Akira Ajisaka |
| [HDFS-16151](https://issues.apache.org/jira/browse/HDFS-16151) | Improve the parameter comments related to ProtobufRpcEngine2#Server() | Minor | documentation | JiangHua Zhu | JiangHua Zhu |
| [HADOOP-17844](https://issues.apache.org/jira/browse/HADOOP-17844) | Upgrade JSON smart to 2.4.7 | Major | . | Renukaprasad C | Renukaprasad C |
| [HDFS-16177](https://issues.apache.org/jira/browse/HDFS-16177) | Bug fix for Util#receiveFile | Minor | . | tomscut | tomscut |
| [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-17858](https://issues.apache.org/jira/browse/HADOOP-17858) | Avoid possible class loading deadlock with VerifierNone initialization | Major | . | Viraj Jasani | Viraj Jasani |
| [HADOOP-17869](https://issues.apache.org/jira/browse/HADOOP-17869) | fs.s3a.connection.maximum should be bigger than fs.s3a.threads.max | Major | common | Dongjoon Hyun | Dongjoon Hyun |
| [HADOOP-17886](https://issues.apache.org/jira/browse/HADOOP-17886) | Upgrade ant to 1.10.11 | Major | . | Ahmed Hussein | Ahmed Hussein |
| [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 |
| [HADOOP-17870](https://issues.apache.org/jira/browse/HADOOP-17870) | HTTP Filesystem to qualify paths in open()/getFileStatus() | Minor | fs | VinothKumar Raman | VinothKumar Raman |
| [HADOOP-17899](https://issues.apache.org/jira/browse/HADOOP-17899) | Avoid using implicit dependency on junit-jupiter-api | Major | test | Masatake Iwasaki | Masatake Iwasaki |
| [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 |
| [HADOOP-17804](https://issues.apache.org/jira/browse/HADOOP-17804) | Prometheus metrics only include the last set of labels | Major | common | Adam Binford | Adam Binford |
| [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-17891](https://issues.apache.org/jira/browse/HADOOP-17891) | lz4-java and snappy-java should be excluded from relocation in shaded Hadoop libraries | Major | . | L. C. Hsieh | L. C. Hsieh |
| [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 |
| [YARN-9606](https://issues.apache.org/jira/browse/YARN-9606) | Set sslfactory for AuthenticatedURL() while creating LogsCLI#webServiceClient | Major | . | Bilwa S T | Bilwa S T |
| [HDFS-16233](https://issues.apache.org/jira/browse/HDFS-16233) | Do not use exception handler to implement copy-on-write for EnumCounters | Major | namenode | Wei-Chiu Chuang | Wei-Chiu Chuang |
| [HDFS-16235](https://issues.apache.org/jira/browse/HDFS-16235) | Deadlock in LeaseRenewer for static remove method | Major | hdfs | angerszhu | angerszhu |
| [HADOOP-17940](https://issues.apache.org/jira/browse/HADOOP-17940) | Upgrade Kafka to 2.8.1 | Major | . | Takanobu Asanuma | Takanobu Asanuma |
| [YARN-10970](https://issues.apache.org/jira/browse/YARN-10970) | Standby RM should expose prom endpoint | Major | resourcemanager | Max Xie | Max Xie |
| [HADOOP-17934](https://issues.apache.org/jira/browse/HADOOP-17934) | NullPointerException when no HTTP response set on AbfsRestOperation | Major | fs/azure | Josh Elser | Josh Elser |
| [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-17922](https://issues.apache.org/jira/browse/HADOOP-17922) | Lookup old S3 encryption configs for JCEKS | Major | fs/s3 | Mehakmeet Singh | Mehakmeet Singh |
| [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-16271](https://issues.apache.org/jira/browse/HDFS-16271) | RBF: NullPointerException when setQuota through routers with quota disabled | Major | . | Chengwei Wang | Chengwei Wang |
| [YARN-10976](https://issues.apache.org/jira/browse/YARN-10976) | Fix resource leak due to Files.walk | Minor | . | lujie | lujie |
| [HADOOP-17932](https://issues.apache.org/jira/browse/HADOOP-17932) | Distcp file length comparison have no effect | Major | common, tools, tools/distcp | yinan zhan | yinan zhan |
| [HDFS-16272](https://issues.apache.org/jira/browse/HDFS-16272) | Int overflow in computing safe length during EC block recovery | Critical | 3.1.1 | daimin | daimin |
| [HADOOP-17953](https://issues.apache.org/jira/browse/HADOOP-17953) | S3A: ITestS3AFileContextStatistics test to lookup global or per-bucket configuration for encryption algorithm | Minor | fs/s3 | Mehakmeet Singh | Mehakmeet Singh |
| [HADOOP-17971](https://issues.apache.org/jira/browse/HADOOP-17971) | Exclude IBM Java security classes from being shaded/relocated | Major | build | Nicholas Marion | Nicholas Marion |
| [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-16269](https://issues.apache.org/jira/browse/HDFS-16269) | [Fix] Improve NNThroughputBenchmark#blockReport operation | Major | benchmarks, namenode | JiangHua Zhu | JiangHua Zhu |
| [HADOOP-17945](https://issues.apache.org/jira/browse/HADOOP-17945) | JsonSerialization raises EOFException reading JSON data stored on google GCS | Major | fs | Steve Loughran | Steve Loughran |
| [HDFS-16259](https://issues.apache.org/jira/browse/HDFS-16259) | Catch and re-throw sub-classes of AccessControlException thrown by any permission provider plugins (eg Ranger) | Major | namenode | Stephen O'Donnell | Stephen O'Donnell |
| [HADOOP-17988](https://issues.apache.org/jira/browse/HADOOP-17988) | Disable JIRA plugin for YETUS on Hadoop | Critical | build | Gautham Banasandra | Gautham Banasandra |
| [HDFS-16311](https://issues.apache.org/jira/browse/HDFS-16311) | Metric metadataOperationRate calculation error in DataNodeVolumeMetrics | Major | . | tomscut | tomscut |
| [HADOOP-18002](https://issues.apache.org/jira/browse/HADOOP-18002) | abfs rename idempotency broken -remove recovery | Major | fs/azure | Steve Loughran | Steve Loughran |
| [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 | . | tomscut | tomscut |
| [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-16334](https://issues.apache.org/jira/browse/HDFS-16334) | Correct NameNode ACL description | Minor | documentation | 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 |
| [YARN-10975](https://issues.apache.org/jira/browse/YARN-10975) | EntityGroupFSTimelineStore#ActiveLogParser parses already processed files | Major | timelineserver | Prabhu Joseph | Ravuri Sushma sree |
| [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 |
| [HDFS-16293](https://issues.apache.org/jira/browse/HDFS-16293) | Client sleeps and holds 'dataQueue' when DataNodes are congested | Major | hdfs-client | Yuanxin Zhu | Yuanxin Zhu |
| [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 |
| [YARN-11020](https://issues.apache.org/jira/browse/YARN-11020) | [UI2] No container is found for an application attempt with a single AM container | Major | yarn-ui-v2 | Andras Gyori | Andras Gyori |
| [HDFS-16373](https://issues.apache.org/jira/browse/HDFS-16373) | Fix MiniDFSCluster restart in case of multiple namenodes | Major | . | Ayush Saxena | Ayush Saxena |
| [HADOOP-18048](https://issues.apache.org/jira/browse/HADOOP-18048) | [branch-3.3] Dockerfile\_aarch64 build fails with fatal error: Python.h: No such file or directory | Major | . | Siyao Meng | Siyao Meng |
| [HDFS-16377](https://issues.apache.org/jira/browse/HDFS-16377) | Should CheckNotNull before access FsDatasetSpi | Major | . | tomscut | tomscut |
| [YARN-6862](https://issues.apache.org/jira/browse/YARN-6862) | Nodemanager resource usage metrics sometimes are negative | Major | nodemanager | YunFan Zhou | Benjamin Teke |
| [HADOOP-13500](https://issues.apache.org/jira/browse/HADOOP-13500) | Synchronizing iteration of Configuration properties object | Major | conf | Jason Darrell Lowe | Dhananjay Badaya |
| [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 |
| [YARN-11053](https://issues.apache.org/jira/browse/YARN-11053) | AuxService should not use class name as default system classes | Major | auxservices | Cheng Pan | Cheng Pan |
| [HDFS-16395](https://issues.apache.org/jira/browse/HDFS-16395) | Remove useless NNThroughputBenchmark#dummyActionNoSynch() | Major | benchmarks, namenode | JiangHua Zhu | JiangHua Zhu |
| [HADOOP-18045](https://issues.apache.org/jira/browse/HADOOP-18045) | Disable TestDynamometerInfra | Major | test | Akira Ajisaka | Akira Ajisaka |
| [HDFS-14099](https://issues.apache.org/jira/browse/HDFS-14099) | Unknown frame descriptor when decompressing multiple frames in ZStandardDecompressor | Major | . | xuzq | xuzq |
| [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 |
| [HDFS-16410](https://issues.apache.org/jira/browse/HDFS-16410) | Insecure Xml parsing in OfflineEditsXmlLoader | Minor | . | Ashutosh Gupta | Ashutosh Gupta |
| [HDFS-16420](https://issues.apache.org/jira/browse/HDFS-16420) | Avoid deleting unique data blocks when deleting redundancy striped blocks | Critical | ec, erasure-coding | qinyuren | Jackson Wang |
| [YARN-10561](https://issues.apache.org/jira/browse/YARN-10561) | Upgrade node.js to 12.22.1 and yarn to 1.22.5 in YARN application catalog webapp | Critical | webapp | Akira Ajisaka | Akira Ajisaka |
| [HADOOP-18096](https://issues.apache.org/jira/browse/HADOOP-18096) | Distcp: Sync moves filtered file to home directory rather than deleting | Critical | . | Ayush Saxena | Ayush Saxena |
### 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 |
| [HADOOP-17936](https://issues.apache.org/jira/browse/HADOOP-17936) | TestLocalFSCopyFromLocal.testDestinationFileIsToParentDirectory failure after reverting HADOOP-16878 | Major | . | Chao Sun | Chao Sun |
| [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 |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [YARN-10337](https://issues.apache.org/jira/browse/YARN-10337) | TestRMHATimelineCollectors fails on hadoop trunk | Major | test, yarn | Ahmed Hussein | Bilwa S T |
| [HDFS-15457](https://issues.apache.org/jira/browse/HDFS-15457) | TestFsDatasetImpl fails intermittently | Major | hdfs | Ahmed Hussein | Ahmed Hussein |
| [HADOOP-17424](https://issues.apache.org/jira/browse/HADOOP-17424) | Replace HTrace with No-Op tracer | Major | . | Siyao Meng | Siyao Meng |
| [HADOOP-17705](https://issues.apache.org/jira/browse/HADOOP-17705) | S3A to add option fs.s3a.endpoint.region to set AWS region | Major | fs/s3 | Mehakmeet Singh | Mehakmeet Singh |
| [HADOOP-17670](https://issues.apache.org/jira/browse/HADOOP-17670) | S3AFS and ABFS to log IOStats at DEBUG mode or optionally at INFO level in close() | Minor | fs/azure, fs/s3 | Mehakmeet Singh | Mehakmeet Singh |
| [HADOOP-17511](https://issues.apache.org/jira/browse/HADOOP-17511) | Add an Audit plugin point for S3A auditing/context | Major | . | Steve Loughran | Steve Loughran |
| [HADOOP-17470](https://issues.apache.org/jira/browse/HADOOP-17470) | Collect more S3A IOStatistics | Major | fs/s3 | Steve Loughran | Steve Loughran |
| [HADOOP-17735](https://issues.apache.org/jira/browse/HADOOP-17735) | Upgrade aws-java-sdk to 1.11.1026 | Major | build, fs/s3 | Steve Loughran | Steve Loughran |
| [HADOOP-17547](https://issues.apache.org/jira/browse/HADOOP-17547) | Magic committer to downgrade abort in cleanup if list uploads fails with access denied | Major | fs/s3 | Steve Loughran | Bogdan Stolojan |
| [HADOOP-17771](https://issues.apache.org/jira/browse/HADOOP-17771) | S3AFS creation fails "Unable to find a region via the region provider chain." | Blocker | fs/s3 | Steve Loughran | Steve Loughran |
| [HDFS-15659](https://issues.apache.org/jira/browse/HDFS-15659) | Set dfs.namenode.redundancy.considerLoad to false in MiniDFSCluster | Major | test | Akira Ajisaka | Ahmed Hussein |
| [HADOOP-17774](https://issues.apache.org/jira/browse/HADOOP-17774) | bytesRead FS statistic showing twice the correct value in S3A | Major | fs/s3 | Mehakmeet Singh | Mehakmeet Singh |
| [HADOOP-17290](https://issues.apache.org/jira/browse/HADOOP-17290) | ABFS: Add Identifiers to Client Request Header | Major | fs/azure | Sumangala Patki | Sumangala Patki |
| [HADOOP-17250](https://issues.apache.org/jira/browse/HADOOP-17250) | ABFS: Random read perf improvement | Major | fs/azure | Sneha Vijayarajan | Mukund Thakur |
| [HADOOP-17596](https://issues.apache.org/jira/browse/HADOOP-17596) | ABFS: Change default Readahead Queue Depth from num(processors) to const | Major | fs/azure | Sumangala Patki | Sumangala Patki |
| [HADOOP-17715](https://issues.apache.org/jira/browse/HADOOP-17715) | ABFS: Append blob tests with non HNS accounts fail | Minor | . | Sneha Varma | Sneha Varma |
| [HADOOP-17714](https://issues.apache.org/jira/browse/HADOOP-17714) | ABFS: testBlobBackCompatibility, testRandomRead & WasbAbfsCompatibility tests fail when triggered with default configs | Minor | test | Sneha Varma | Sneha Varma |
| [HDFS-16140](https://issues.apache.org/jira/browse/HDFS-16140) | TestBootstrapAliasmap fails by BindException | Major | test | Akira Ajisaka | Akira Ajisaka |
| [HADOOP-13887](https://issues.apache.org/jira/browse/HADOOP-13887) | Encrypt S3A data client-side with AWS SDK (S3-CSE) | Minor | fs/s3 | Jeeyoung Kim | Mehakmeet Singh |
| [HADOOP-17458](https://issues.apache.org/jira/browse/HADOOP-17458) | S3A to treat "SdkClientException: Data read has a different length than the expected" as EOFException | Minor | fs/s3 | Steve Loughran | Bogdan Stolojan |
| [HADOOP-17628](https://issues.apache.org/jira/browse/HADOOP-17628) | Distcp contract test is really slow with ABFS and S3A; timing out | Minor | fs/azure, fs/s3, test, tools/distcp | Bilahari T H | Steve Loughran |
| [HADOOP-17822](https://issues.apache.org/jira/browse/HADOOP-17822) | fs.s3a.acl.default not working after S3A Audit feature added | Major | fs/s3 | Steve Loughran | Steve Loughran |
| [HADOOP-17139](https://issues.apache.org/jira/browse/HADOOP-17139) | Re-enable optimized copyFromLocal implementation in S3AFileSystem | Minor | fs/s3 | Sahil Takiar | Bogdan Stolojan |
| [HADOOP-17823](https://issues.apache.org/jira/browse/HADOOP-17823) | S3A Tests to skip if S3Guard and S3-CSE are enabled. | Major | build, fs/s3 | Mehakmeet Singh | Mehakmeet Singh |
| [HDFS-16184](https://issues.apache.org/jira/browse/HDFS-16184) | De-flake TestBlockScanner#testSkipRecentAccessFile | Major | . | Viraj Jasani | Viraj Jasani |
| [HADOOP-17677](https://issues.apache.org/jira/browse/HADOOP-17677) | Distcp is unable to determine region with S3 PrivateLink endpoints | Major | fs/s3, tools/distcp | KJ | |
| [HDFS-16192](https://issues.apache.org/jira/browse/HDFS-16192) | ViewDistributedFileSystem#rename wrongly using src in the place of dst. | Major | . | Uma Maheswara Rao G | Uma Maheswara Rao G |
| [HADOOP-17156](https://issues.apache.org/jira/browse/HADOOP-17156) | Clear abfs readahead requests on stream close | Major | fs/azure | Rajesh Balamohan | Mukund Thakur |
| [HADOOP-17618](https://issues.apache.org/jira/browse/HADOOP-17618) | ABFS: Partially obfuscate SAS object IDs in Logs | Major | fs/azure | Sumangala Patki | Sumangala Patki |
| [HADOOP-17894](https://issues.apache.org/jira/browse/HADOOP-17894) | CredentialProviderFactory.getProviders() recursion loading JCEKS file from s3a | Major | conf, fs/s3 | Steve Loughran | Steve Loughran |
| [HADOOP-17126](https://issues.apache.org/jira/browse/HADOOP-17126) | implement non-guava Precondition checkNotNull | Major | . | Ahmed Hussein | Ahmed Hussein |
| [HADOOP-17195](https://issues.apache.org/jira/browse/HADOOP-17195) | Intermittent OutOfMemory error while performing hdfs CopyFromLocal to abfs | Major | fs/azure | Mehakmeet Singh | Mehakmeet Singh |
| [HADOOP-17929](https://issues.apache.org/jira/browse/HADOOP-17929) | implement non-guava Precondition checkArgument | Major | . | Ahmed Hussein | Ahmed Hussein |
| [HADOOP-17198](https://issues.apache.org/jira/browse/HADOOP-17198) | Support S3 Access Points | Major | fs/s3 | Steve Loughran | Bogdan Stolojan |
| [HADOOP-17871](https://issues.apache.org/jira/browse/HADOOP-17871) | S3A CSE: minor tuning | Minor | fs/s3 | Steve Loughran | Mehakmeet Singh |
| [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 |
| [HADOOP-17863](https://issues.apache.org/jira/browse/HADOOP-17863) | ABFS: Fix compiler deprecation warning in TextFileBasedIdentityHandler | Minor | fs/azure | Sumangala Patki | Sumangala Patki |
| [HADOOP-17928](https://issues.apache.org/jira/browse/HADOOP-17928) | s3a: set fs.s3a.downgrade.syncable.exceptions = true by default | Major | fs/s3 | Steve Loughran | Steve Loughran |
| [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 |
| [HADOOP-17226](https://issues.apache.org/jira/browse/HADOOP-17226) | Failure of ITestAssumeRole.testRestrictedCommitActions | Minor | fs/s3, test | Steve Loughran | Steve Loughran |
| [HADOOP-14334](https://issues.apache.org/jira/browse/HADOOP-14334) | S3 SSEC tests to downgrade when running against a mandatory encryption object store | Minor | fs/s3, test | Steve Loughran | Monthon Klongklaew |
| [HADOOP-16223](https://issues.apache.org/jira/browse/HADOOP-16223) | remove misleading fs.s3a.delegation.tokens.enabled prompt | Minor | fs/s3 | Steve Loughran | |
### OTHER:
| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HDFS-16078](https://issues.apache.org/jira/browse/HDFS-16078) | Remove unused parameters for DatanodeManager.handleLifeline() | Minor | . | tomscut | tomscut |
| [HDFS-16079](https://issues.apache.org/jira/browse/HDFS-16079) | Improve the block state change log | Minor | . | tomscut | tomscut |
| [HDFS-16089](https://issues.apache.org/jira/browse/HDFS-16089) | EC: Add metric EcReconstructionValidateTimeMillis for StripedBlockReconstructor | Minor | . | tomscut | tomscut |
| [HDFS-16298](https://issues.apache.org/jira/browse/HDFS-16298) | Improve error msg for BlockMissingException | Minor | . | tomscut | tomscut |
| [HDFS-16312](https://issues.apache.org/jira/browse/HDFS-16312) | Fix typo for DataNodeVolumeMetrics and ProfilingFileIoEvents | Minor | . | tomscut | tomscut |
| [HADOOP-18005](https://issues.apache.org/jira/browse/HADOOP-18005) | Correct log format for LdapGroupsMapping | Minor | . | tomscut | tomscut |
| [HDFS-16319](https://issues.apache.org/jira/browse/HDFS-16319) | Add metrics doc for ReadLockLongHoldCount and WriteLockLongHoldCount | Minor | . | tomscut | tomscut |
| [HDFS-16326](https://issues.apache.org/jira/browse/HDFS-16326) | Simplify the code for DiskBalancer | Minor | . | tomscut | tomscut |
| [HDFS-16335](https://issues.apache.org/jira/browse/HDFS-16335) | Fix HDFSCommands.md | Minor | . | tomscut | tomscut |
| [HDFS-16339](https://issues.apache.org/jira/browse/HDFS-16339) | Show the threshold when mover threads quota is exceeded | Minor | . | tomscut | tomscut |
| [YARN-10820](https://issues.apache.org/jira/browse/YARN-10820) | Make GetClusterNodesRequestPBImpl thread safe | Major | client | Prabhu Joseph | SwathiChandrashekar |
| [HADOOP-17808](https://issues.apache.org/jira/browse/HADOOP-17808) | ipc.Client not setting interrupt flag after catching InterruptedException | Minor | . | Viraj Jasani | Viraj Jasani |
| [HADOOP-17834](https://issues.apache.org/jira/browse/HADOOP-17834) | Bump aliyun-sdk-oss to 3.13.0 | Major | . | Siyao Meng | Siyao Meng |
| [HADOOP-17950](https://issues.apache.org/jira/browse/HADOOP-17950) | Provide replacement for deprecated APIs of commons-io IOUtils | Major | . | Viraj Jasani | Viraj Jasani |
| [HADOOP-17955](https://issues.apache.org/jira/browse/HADOOP-17955) | Bump netty to the latest 4.1.68 | Major | . | Takanobu Asanuma | Takanobu Asanuma |
| [HADOOP-17946](https://issues.apache.org/jira/browse/HADOOP-17946) | Update commons-lang to latest 3.x | Minor | . | Sean Busbey | Renukaprasad C |
| [HDFS-16323](https://issues.apache.org/jira/browse/HDFS-16323) | DatanodeHttpServer doesn't require handler state map while retrieving filter handlers | Minor | . | Viraj Jasani | Viraj Jasani |
| [HADOOP-13464](https://issues.apache.org/jira/browse/HADOOP-13464) | update GSON to 2.7+ | Minor | build | Sean Busbey | Igor Dvorzhak |
| [HADOOP-18061](https://issues.apache.org/jira/browse/HADOOP-18061) | Update the year to 2022 | Major | . | Ayush Saxena | Ayush Saxena |

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# 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
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# Apache Hadoop 3.3.2 Release Notes
These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.
---
* [HDFS-15288](https://issues.apache.org/jira/browse/HDFS-15288) | *Major* | **Add Available Space Rack Fault Tolerant BPP**
Added a new BlockPlacementPolicy: "AvailableSpaceRackFaultTolerantBlockPlacementPolicy" which uses the same optimization logic as the AvailableSpaceBlockPlacementPolicy along with spreading the replicas across maximum number of racks, similar to BlockPlacementPolicyRackFaultTolerant.
The BPP can be configured by setting the blockplacement policy class as org.apache.hadoop.hdfs.server.blockmanagement.AvailableSpaceRackFaultTolerantBlockPlacementPolicy
---
* [HADOOP-17424](https://issues.apache.org/jira/browse/HADOOP-17424) | *Major* | **Replace HTrace with No-Op tracer**
Dependency on HTrace and TraceAdmin protocol/utility were removed. Tracing functionality is no-op until alternative tracer implementation is added.
---
* [HDFS-15814](https://issues.apache.org/jira/browse/HDFS-15814) | *Major* | **Make some parameters configurable for DataNodeDiskMetrics**
**WARNING: No release note provided for this change.**
---
* [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
---
* [HADOOP-13887](https://issues.apache.org/jira/browse/HADOOP-13887) | *Minor* | **Encrypt S3A data client-side with AWS SDK (S3-CSE)**
Adds support for client side encryption in AWS S3,
with keys managed by AWS-KMS.
Read the documentation in encryption.md very, very carefully before
use and consider it unstable.
S3-CSE is enabled in the existing configuration option
"fs.s3a.server-side-encryption-algorithm":
fs.s3a.server-side-encryption-algorithm=CSE-KMS
fs.s3a.server-side-encryption.key=\<KMS\_KEY\_ID\>
You cannot enable CSE and SSE in the same client, although
you can still enable a default SSE option in the S3 console.
\* Not compatible with S3Guard.
\* Filesystem list/get status operations subtract 16 bytes from the length
of all files \>= 16 bytes long to compensate for the padding which CSE
adds.
\* The SDK always warns about the specific algorithm chosen being
deprecated. It is critical to use this algorithm for ranged
GET requests to work (i.e. random IO). Ignore.
\* Unencrypted files CANNOT BE READ.
The entire bucket SHOULD be encrypted with S3-CSE.
\* Uploading files may be a bit slower as blocks are now
written sequentially.
\* The Multipart Upload API is disabled when S3-CSE is active.
---
* [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.

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<activeByDefault>false</activeByDefault> <activeByDefault>false</activeByDefault>
</activation> </activation>
<properties> <properties>
<jdiff.stable.api>3.3.1</jdiff.stable.api> <jdiff.stable.api>3.3.2</jdiff.stable.api>
<jdiff.stability>-unstable</jdiff.stability> <jdiff.stability>-unstable</jdiff.stability>
<!-- Commented out for HADOOP-11776 --> <!-- Commented out for HADOOP-11776 -->
<!-- Uncomment param name="${jdiff.compatibility}" in javadoc doclet if compatibility is not empty --> <!-- Uncomment param name="${jdiff.compatibility}" in javadoc doclet if compatibility is not empty -->