| YARN-7773 | YARN Federation used Mysql as state store throw exception, Unknown column ‘homeSubCluster’ in ‘field list’ | Blocker | federation | Yiran Wu | Yiran Wu | 
| YARN-8426 | Upgrade jquery-ui to 1.12.1 in YARN | Major | webapp | Sunil Govindan | Sunil Govindan | 
| HADOOP-15550 | Avoid static initialization of ObjectMappers | Minor | performance | Todd Lipcon | Todd Lipcon | 
| HDFS-13721 | NPE in DataNode due to uninitialized DiskBalancer | Major | datanode, diskbalancer | Xiao Chen | Xiao Chen | 
| YARN-8360 | Yarn service conflict between restart policy and NM configuration | Critical | yarn | Chandni Singh | Suma Shivaprasad | 
| YARN-8380 | Support bind propagation options for mounts in docker runtime | Major | . | Billie Rinaldi | Billie Rinaldi | 
| YARN-8544 | [DS] AM registration fails when hadoop authorization is enabled | Blocker | . | Bibin A Chundatt | Bibin A Chundatt | 
| YARN-8548 | AllocationRespose proto setNMToken initBuilder not done | Major | . | Bibin A Chundatt | Bilwa S T | 
| YARN-7748 | TestContainerResizing.testIncreaseContainerUnreservedWhenApplicationCompleted fails due to multiple container fail events | Major | capacityscheduler | Haibo Chen | Weiwei Yang | 
| YARN-8577 | Fix the broken anchor in SLS site-doc | Minor | documentation | Weiwei Yang | Weiwei Yang | 
| YARN-4606 | CapacityScheduler: applications could get starved because computation of #activeUsers considers pending apps | Critical | capacity scheduler, capacityscheduler | Karam Singh | Manikandan R | 
| YARN-8330 | Avoid publishing reserved container to ATS from RM | Critical | yarn-native-services | Yesha Vora | Suma Shivaprasad | 
| YARN-8429 | Improve diagnostic message when artifact is not set properly | Major | . | Yesha Vora | Gour Saha | 
| YARN-8571 | Validate service principal format prior to launching yarn service | Major | security, yarn | Eric Yang | Eric Yang | 
| HADOOP-15637 | LocalFs#listLocatedStatus does not filter out hidden .crc files | Minor | fs | Erik Krogen | Erik Krogen | 
| YARN-8579 | New AM attempt could not retrieve previous attempt component data | Critical | . | Yesha Vora | Gour Saha | 
| YARN-8397 | Potential thread leak in ActivitiesManager | Major | . | Rohith Sharma K S | Rohith Sharma K S | 
| YARN-8595 | [UI2] Container diagnostic information is missing from container page | Major | yarn-ui-v2 | Akhil PB | Akhil PB | 
| YARN-8403 | Nodemanager logs failed to download file with INFO level | Major | yarn | Eric Yang | Eric Yang | 
| YARN-8610 | Yarn Service Upgrade: Typo in Error message | Major | . | Chandni Singh | Chandni Singh | 
| YARN-8593 | Add RM web service endpoint to get user information | Major | resourcemanager | Akhil PB | Akhil PB | 
| YARN-8594 | [UI2] Display current logged in user | Major | . | Akhil PB | Akhil PB | 
| YARN-8592 | [UI2] rmip:port/ui2 endpoint shows a blank page in windows OS and Chrome browser | Major | . | Akhil S Naik | Akhil PB | 
| YARN-8318 | [UI2] IP address in component page shows N/A | Major | yarn-ui-v2 | Yesha Vora | Yesha Vora | 
| YARN-6966 | NodeManager metrics may return wrong negative values when NM restart | Major | . | Yang Wang | Szilard Nemeth | 
| YARN-8620 | [UI2] YARN Services UI new submission failures are not debuggable | Major | yarn-ui-v2 | Akhil PB | Akhil PB | 
| YARN-8615 | [UI2] Resource Usage tab shows only memory related info. No info available for vcores/gpu. | Major | yarn-ui-v2 | Sumana Sathish | Akhil PB | 
| HDFS-13792 | Fix FSN read/write lock metrics name | Trivial | documentation, metrics | Chao Sun | Chao Sun | 
| YARN-8629 | Container cleanup fails while trying to delete Cgroups | Critical | . | Yesha Vora | Suma Shivaprasad | 
| YARN-8407 | Container launch exception in AM log should be printed in ERROR level | Major | . | Yesha Vora | Yesha Vora | 
| HDFS-13799 | TestEditLogTailer#testTriggersLogRollsForAllStandbyNN fails due to missing synchronization between rollEditsRpcExecutor and tailerThread shutdown | Minor | ha | Hrishikesh Gadre | Hrishikesh Gadre | 
| HDFS-13786 | EC: Display erasure coding policy for sub-directories is not working | Major | erasure-coding | Souryakanta Dwivedy | Ayush Saxena | 
| HDFS-13785 | EC: “removePolicy” is not working for built-in/system Erasure Code policies | Minor | documentation, erasure-coding | Souryakanta Dwivedy | Ayush Saxena | 
| YARN-8633 | Update DataTables version in yarn-common in line with JQuery 3 upgrade | Major | yarn | Akhil PB | Akhil PB | 
| YARN-8331 | Race condition in NM container launched after done | Major | . | Yang Wang | Pradeep Ambati | 
| YARN-8521 | NPE in AllocationTagsManager when a container is removed more than once | Major | resourcemanager | Weiwei Yang | Weiwei Yang | 
| YARN-8575 | Avoid committing allocation proposal to unavailable nodes in async scheduling | Major | capacityscheduler | Tao Yang | Tao Yang | 
| HDFS-13668 | FSPermissionChecker may throws AIOOE when check inode permission | Major | namenode | He Xiaoqiao | He Xiaoqiao | 
| HADOOP-15638 | KMS Accept Queue Size default changed from 500 to 128 in Hadoop 3.x | Major | kms | Wei-Chiu Chuang | Wei-Chiu Chuang | 
| HDFS-13823 | NameNode UI : “Utilities -> Browse the file system -> open a file -> Head the file” is not working | Major | ui | Nanda kumar | Nanda kumar | 
| HDFS-13738 | fsck -list-corruptfileblocks has infinite loop if user is not privileged. | Major | tools | Wei-Chiu Chuang | Yuen-Kuei Hsueh | 
| HDFS-13758 | DatanodeManager should throw exception if it has BlockRecoveryCommand but the block is not under construction | Major | namenode | Wei-Chiu Chuang | chencan | 
| YARN-8614 | Fix few annotation typos in YarnConfiguration | Trivial | . | Sen Zhao | Sen Zhao | 
| HDFS-13819 | TestDirectoryScanner#testDirectoryScannerInFederatedCluster is flaky | Minor | hdfs | Daniel Templeton | Daniel Templeton | 
| YARN-8656 | container-executor should not write cgroup tasks files for docker containers | Major | . | Jim Brennan | Jim Brennan | 
| YARN-8474 | sleeper service fails to launch with “Authentication Required” | Critical | yarn | Sumana Sathish | Billie Rinaldi | 
| YARN-8667 | Cleanup symlinks when container restarted by NM to solve issue “find: File system loop detected;” for tar ball artifacts. | Critical | . | Rohith Sharma K S | Chandni Singh | 
| HDFS-10240 | Race between close/recoverLease leads to missing block | Major | . | zhouyingchao | Jinglun | 
| HADOOP-15655 | Enhance KMS client retry behavior | Critical | kms | Kitti Nanasi | Kitti Nanasi | 
| YARN-8612 | Fix NM Collector Service Port issue in YarnConfiguration | Major | ATSv2 | Prabha Manepalli | Prabha Manepalli | 
| HDFS-13747 | Statistic for list_located_status is incremented incorrectly by listStatusIterator | Minor | hdfs-client | Todd Lipcon | Antal Mihalyi | 
| HADOOP-15674 | Test failure TestSSLHttpServer.testExcludedCiphers with TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 cipher suite | Major | common | Gabor Bota | Szilard Nemeth | 
| YARN-8640 | Restore previous state in container-executor after failure | Major | . | Jim Brennan | Jim Brennan | 
| YARN-8679 | [ATSv2] If HBase cluster is down for long time, high chances that NM ContainerManager dispatcher get blocked | Major | . | Rohith Sharma K S | Wangda Tan | 
| HDFS-13772 | Erasure coding: Unnecessary NameNode Logs displaying for Enabling/Disabling Erasure coding policies which are already enabled/disabled | Trivial | erasure-coding | Souryakanta Dwivedy | Ayush Saxena | 
| YARN-8649 | NPE in localizer hearbeat processing if a container is killed while localizing | Major | . | lujie | lujie | 
| YARN-8719 | Typo correction for yarn configuration in OpportunisticContainers(federation) docs | Major | documentation, federation | Y. SREENIVASULU REDDY | Y. SREENIVASULU REDDY | 
| YARN-8675 | Setting hostname of docker container breaks with “host” networking mode for Apps which do not run as a YARN service | Major | . | Yesha Vora | Suma Shivaprasad | 
| HDFS-13858 | RBF: Add check to have single valid argument to safemode command | Major | federation | Soumyapn | Ayush Saxena | 
| HDFS-13731 | ReencryptionUpdater fails with ConcurrentModificationException during processCheckpoints | Major | encryption | Xiao Chen | Zsolt Venczel | 
| YARN-8723 | Fix a typo in CS init error message when resource calculator is not correctly set | Minor | . | Weiwei Yang | Abhishek Modi | 
| HADOOP-15705 | Typo in the definition of “stable” in the interface classification | Minor | . | Daniel Templeton | Daniel Templeton | 
| HDFS-13863 | FsDatasetImpl should log DiskOutOfSpaceException | Major | hdfs | Fei Hui | Fei Hui | 
| HADOOP-15698 | KMS log4j is not initialized properly at startup | Major | kms | Kitti Nanasi | Kitti Nanasi | 
| HADOOP-15680 | ITestNativeAzureFileSystemConcurrencyLive times out | Major | . | Andras Bokor | Andras Bokor | 
| HADOOP-15706 | Typo in compatibility doc: SHOUD -> SHOULD | Trivial | . | Daniel Templeton | Laszlo Kollar | 
| HDFS-13027 | Handle possible NPEs due to deleted blocks in race condition | Major | namenode | Vinayakumar B | Vinayakumar B | 
| YARN-8535 | Fix DistributedShell unit tests | Major | distributed-shell, timelineservice | Eric Yang | Abhishek Modi | 
| HDFS-13867 | RBF: Add validation for max arguments for Router admin ls, clrQuota, setQuota, rm and nameservice commands | Major | . | Ayush Saxena | Ayush Saxena | 
| HDFS-13774 | EC: “hdfs ec -getPolicy” is not retrieving policy details when the special REPLICATION policy set on the directory | Minor | erasure-coding | Souryakanta Dwivedy | Ayush Saxena | 
| HADOOP-10219 | ipc.Client.setupIOstreams() needs to check for ClientCache.stopClient requested shutdowns | Major | ipc | Steve Loughran | Kihwal Lee | 
| HDFS-13815 | RBF: Add check to order command | Major | federation | Soumyapn | Ranith Sardar | 
| HADOOP-15696 | KMS performance regression due to too many open file descriptors after Jetty migration | Blocker | kms | Wei-Chiu Chuang | Wei-Chiu Chuang | 
| MAPREDUCE-7131 | Job History Server has race condition where it moves files from intermediate to finished but thinks file is in intermediate | Major | . | Anthony Hsu | Anthony Hsu | 
| HDFS-13836 | RBF: Handle mount table znode with null value | Major | federation, hdfs | yanghuafeng | yanghuafeng | 
| YARN-8751 | Container-executor permission check errors cause the NM to be marked unhealthy | Critical | . | Shane Kumpf | Craig Condit | 
| HDFS-13862 | RBF: Router logs are not capturing few of the dfsrouteradmin commands | Major | . | Soumyapn | Ayush Saxena | 
| HDFS-12716 | ‘dfs.datanode.failed.volumes.tolerated’ to support minimum number of volumes to be available | Major | datanode | usharani | Ranith Sardar | 
| HDFS-13895 | EC: Fix Intermittent Failure in TestDFSStripedOutputStreamWithFailureWithRandomECPolicy | Major | erasure-coding | Ayush Saxena | Ayush Saxena | 
| YARN-8709 | CS preemption monitor always fails since one under-served queue was deleted | Major | capacityscheduler, scheduler preemption | Tao Yang | Tao Yang | 
| HDFS-13051 | Fix dead lock during async editlog rolling if edit queue is full | Major | namenode | zhangwei | Daryn Sharp | 
| YARN-8630 | ATSv2 REST APIs should honor filter-entity-list-by-user in non-secure cluster when ACls are enabled | Major | . | Rohith Sharma K S | Rohith Sharma K S | 
| YARN-8729 | Node status updater thread could be lost after it is restarted | Critical | nodemanager | Tao Yang | Tao Yang | 
| HDFS-13914 | Fix DN UI logs link broken when https is enabled after HDFS-13902 | Minor | datanode | Jianfei Jiang | Jianfei Jiang | 
| MAPREDUCE-7133 | History Server task attempts REST API returns invalid data | Major | jobhistoryserver | Oleksandr Shevchenko | Oleksandr Shevchenko | 
| HDFS-13838 | WebHdfsFileSystem.getFileStatus() won’t return correct “snapshot enabled” status | Major | hdfs, webhdfs | Siyao Meng | Siyao Meng | 
| HADOOP-15733 | Correct the log when Invalid emptier Interval configured | Major | trash | Harshakiran Reddy | Ayush Saxena | 
| YARN-8720 | CapacityScheduler does not enforce max resource allocation check at queue level | Major | capacity scheduler, capacityscheduler, resourcemanager | Tarun Parimi | Tarun Parimi | 
| YARN-8782 | Fix exception message in Resource.throwExceptionWhenArrayOutOfBound | Minor | . | Szilard Nemeth | Gergely Pollak | 
| HDFS-13844 | Fix the fmt_bytes function in the dfs-dust.js | Minor | hdfs, ui | yanghuafeng | yanghuafeng | 
| YARN-8726 | [UI2] YARN UI2 is not accessible when config.env file failed to load | Critical | yarn-ui-v2 | Akhil PB | Akhil PB | 
| YARN-8652 | [UI2] YARN UI2 breaks if getUserInfo REST API is not available in older versions. | Critical | . | Akhil PB | Akhil PB | 
| YARN-8787 | Fix broken list items in PlacementConstraints documentation | Minor | documentation | Masahiro Tanaka | Masahiro Tanaka | 
| HDFS-11719 | Arrays.fill() wrong index in BlockSender.readChecksum() exception handling | Major | datanode | Tao Zhang | Tao Zhang | 
| YARN-8648 | Container cgroups are leaked when using docker | Major | . | Jim Brennan | Jim Brennan | 
| HADOOP-15755 | StringUtils#createStartupShutdownMessage throws NPE when args is null | Major | . | Lokesh Jain | Dinesh Chitlangia | 
| MAPREDUCE-3801 | org.apache.hadoop.mapreduce.v2.app.TestRuntimeEstimators.testExponentialEstimator fails intermittently | Major | mrv2 | Robert Joseph Evans | Jason Lowe | 
| MAPREDUCE-7137 | MRAppBenchmark.benchmark1() fails with NullPointerException | Minor | test | Oleksandr Shevchenko | Oleksandr Shevchenko | 
| MAPREDUCE-7138 | ThrottledContainerAllocator in MRAppBenchmark should implement RMHeartbeatHandler | Minor | test | Oleksandr Shevchenko | Oleksandr Shevchenko | 
| HDFS-13886 | HttpFSFileSystem.getFileStatus() doesn’t return “snapshot enabled” bit | Major | httpfs | Siyao Meng | Siyao Meng | 
| HDFS-13868 | WebHDFS: GETSNAPSHOTDIFF API NPE when param “snapshotname” is given but “oldsnapshotname” is not. | Major | hdfs, webhdfs | Siyao Meng | Pranay Singh | 
| YARN-8771 | CapacityScheduler fails to unreserve when cluster resource contains empty resource type | Critical | capacityscheduler | Tao Yang | Tao Yang | 
| HDFS-13908 | TestDataNodeMultipleRegistrations is flaky | Major | . | Íñigo Goiri | Ayush Saxena | 
| HADOOP-15684 | triggerActiveLogRoll stuck on dead name node, when ConnectTimeoutException happens. | Critical | ha | Rong Tang | Rong Tang | 
| HADOOP-15772 | Remove the ‘Path … should be specified as a URI’ warnings on startup | Major | conf | Arpit Agarwal | Ayush Saxena | 
| YARN-8784 | DockerLinuxContainerRuntime prevents access to distributed cache entries on a full disk | Major | nodemanager | Jason Lowe | Eric Badger | 
| HADOOP-15736 | Trash : Negative Value For Deletion Interval Leads To Abnormal Behaviour. | Major | . | Ayush Saxena | Ayush Saxena | 
| YARN-8628 | [UI2] Few duplicated or inconsistent information displayed in UI2 | Major | yarn-ui-v2 | Akhil PB | Akhil PB | 
| YARN-8742 | [UI2] Container logs on Application / Service pages on UI2 are not available many case, improve error messages in such cases. | Major | yarn-ui-v2 | Akhil PB | Akhil PB | 
| MAPREDUCE-7125 | JobResourceUploader creates LocalFileSystem when it’s not necessary | Major | job submission | Peter Cseh | Peter Cseh | 
| YARN-8815 | RM fails to recover finished unmanaged AM | Critical | . | Rakesh Shah | Bibin A Chundatt | 
| YARN-8752 | yarn-registry.md has wrong word ong-lived, it should be long-lived | Trivial | documentation | leiqiang | leiqiang | 
| YARN-8824 | App Nodelabel missed after  RM restart for finished apps | Major | . | Bibin A Chundatt | Bibin A Chundatt | 
| HDFS-13840 | RBW Blocks which are having less GS should be added to Corrupt | Minor | . | Brahma Reddy Battula | Brahma Reddy Battula | 
| YARN-8804 | resourceLimits may be wrongly calculated when leaf-queue is blocked in cluster with 3+ level queues | Critical | capacityscheduler | Tao Yang | Tao Yang | 
| YARN-8774 | Memory leak when CapacityScheduler allocates from reserved container with non-default label | Critical | capacityscheduler | Tao Yang | Tao Yang | 
| HADOOP-15817 | Reuse Object Mapper in KMSJSONReader | Major | kms | Jonathan Eagles | Jonathan Eagles | 
| YARN-8844 | TestNMProxy unit test is failing | Major | yarn | Eric Yang | Eric Yang | 
| HDFS-13957 | Fix incorrect option used in description of InMemoryAliasMap | Minor | documentation | Yiqun Lin | Yiqun Lin | 
| YARN-7957 | [UI2] YARN service delete option disappears after stopping application | Critical | yarn-ui-v2 | Yesha Vora | Akhil PB | 
| YARN-8797 | [UI2] Improve error pages in new YARN UI | Major | yarn-ui-v2 | Akhil PB | Akhil PB | 
| HADOOP-15820 | ZStandardDecompressor native code sets an integer field as a long | Blocker | . | Jason Lowe | Jason Lowe | 
| HDFS-13964 | RBF: TestRouterWebHDFSContractAppend fails with No Active Namenode under nameservice | Major | . | Ayush Saxena | Ayush Saxena | 
| YARN-7825 | [UI2] Maintain constant horizontal application info bar for Application Attempt page | Major | yarn-ui-v2 | Yesha Vora | Akhil PB | 
| HDFS-13768 | Adding replicas to volume map makes DataNode start slowly | Major | . | Yiqun Lin | Surendra Singh Lilhore | 
| HDFS-13962 | Add null check for add-replica pool to avoid lock acquiring | Major | . | Yiqun Lin | Surendra Singh Lilhore | 
| YARN-8853 | [UI2] Application Attempts tab is not shown correctly when there are no attempts | Major | . | Charan Hebri | Akhil PB | 
| YARN-8845 | hadoop.registry.rm.enabled is not used | Major | . | Íñigo Goiri | Íñigo Goiri | 
| HDFS-13926 | ThreadLocal aggregations for FileSystem.Statistics are incorrect with striped reads | Major | erasure-coding | Xiao Chen | Hrishikesh Gadre | 
| YARN-8666 | [UI2] Remove application tab from YARN Queue Page | Major | yarn-ui-v2 | Yesha Vora | Yesha Vora | 
| YARN-8753 | [UI2] Lost nodes representation missing from Nodemanagers Chart | Major | yarn-ui-v2 | Yesha Vora | Yesha Vora | 
| HADOOP-15679 | ShutdownHookManager shutdown time needs to be configurable & extended | Major | util | Steve Loughran | Steve Loughran | 
| HDFS-13945 | TestDataNodeVolumeFailure is Flaky | Major | . | Ayush Saxena | Ayush Saxena | 
| HDFS-13802 | RBF: Remove FSCK from Router Web UI | Major | . | Fei Hui | Fei Hui | 
| YARN-8869 | YARN Service Client might not work correctly with RM REST API for Kerberos authentication | Blocker | . | Eric Yang | Eric Yang | 
| MAPREDUCE-7132 | JobSplitWriter prints unnecessary warnings if EC(RS10,4) is used | Major | client, mrv2 | Peter Bacsko | Peter Bacsko | 
| YARN-8892 | YARN UI2 doc changes to update security status (verified under security environment) | Blocker | . | Sunil Govindan | Sunil Govindan | 
| YARN-8810 | Yarn Service: discrepancy between hashcode and equals of ConfigFile | Minor | . | Chandni Singh | Chandni Singh | 
| HADOOP-15802 | start-build-env.sh creates an invalid /etc/sudoers.d/hadoop-build-${USER_ID} file entry | Minor | build | Jon Boone | Jon Boone | 
| HADOOP-15861 | Move DelegationTokenIssuer to the right path | Blocker | security | Wei-Chiu Chuang | Wei-Chiu Chuang | 
| HADOOP-15859 | ZStandardDecompressor.c mistakes a class for an instance | Blocker | . | Ben Lau | Jason Lowe | 
| HDFS-14000 | RBF: Documentation should reflect right scripts for v3.0 and above | Major | . | CR Hota | CR Hota | 
| YARN-8868 | Set HTTPOnly attribute to Cookie | Major | . | Chandni Singh | Chandni Singh | 
| HDFS-14003 | Fix findbugs warning in trunk for FSImageFormatPBINode | Major | . | Yiqun Lin | Yiqun Lin | 
| HDFS-14005 | RBF: Web UI update to bootstrap-3.3.7 | Major | . | Íñigo Goiri | Íñigo Goiri | 
| YARN-8910 | Misleading log statement in NM when max retries is -1 | Minor | . | Chandni Singh | Chandni Singh | 
| HADOOP-15850 | CopyCommitter#concatFileChunks should check that the blocks per chunk is not 0 | Critical | tools/distcp | Ted Yu | Ted Yu | 
| YARN-7502 | Nodemanager restart docs should describe nodemanager supervised property | Major | documentation | Jason Lowe | Suma Shivaprasad | 
| HADOOP-15866 | Renamed HADOOP_SECURITY_GROUP_SHELL_COMMAND_TIMEOUT keys break compatibility | Blocker | . | Wei-Chiu Chuang | Wei-Chiu Chuang | 
| YARN-8826 | Fix lingering timeline collector after serviceStop in TimelineCollectorManager | Trivial | ATSv2 | Prabha Manepalli | Prabha Manepalli | 
| HADOOP-15822 | zstd compressor can fail with a small output buffer | Major | . | Jason Lowe | Jason Lowe | 
| HDFS-14021 | TestReconstructStripedBlocksWithRackAwareness#testReconstructForNotEnoughRacks fails intermittently | Major | erasure-coding, test | Xiao Chen | Xiao Chen | 
| MAPREDUCE-7151 | RMContainerAllocator#handleJobPriorityChange expects application_priority always | Major | . | Bibin A Chundatt | Bilwa S T | 
| HADOOP-14445 | Use DelegationTokenIssuer to create KMS delegation tokens that can authenticate to all KMS instances | Major | kms | Wei-Chiu Chuang | Xiao Chen | 
| HDFS-14028 | HDFS OIV temporary dir deletes folder | Major | hdfs | Adam Antal | Adam Antal | 
| HDFS-14027 | DFSStripedOutputStream should implement both hsync methods | Critical | erasure-coding | Xiao Chen | Xiao Chen | 
| YARN-8950 | Compilation fails with dependency convergence error for hbase.profile=2.0 | Blocker | . | Rohith Sharma K S | Rohith Sharma K S | 
| HADOOP-15899 | Update AWS Java SDK versions in NOTICE.txt | Major | . | Akira Ajisaka | Akira Ajisaka | 
| HADOOP-15900 | Update JSch versions in LICENSE.txt | Major | . | Akira Ajisaka | Akira Ajisaka | 
| HDFS-14043 | Tolerate corrupted seen_txid file | Major | hdfs, namenode | Lukas Majercak | Lukas Majercak | 
| YARN-8858 | CapacityScheduler should respect maximum node resource when per-queue maximum-allocation is being used. | Major | . | Sumana Sathish | Wangda Tan | 
| YARN-8970 | Improve the debug message in CS#allocateContainerOnSingleNode | Trivial | . | Weiwei Yang | Zhankun Tang | 
| YARN-8865 | RMStateStore contains large number of expired RMDelegationToken | Major | resourcemanager | Wilfred Spiegelenburg | Wilfred Spiegelenburg | 
| HDFS-14048 | DFSOutputStream close() throws exception on subsequent call after DataNode restart | Major | hdfs-client | Erik Krogen | Erik Krogen | 
| MAPREDUCE-7156 | NullPointerException when reaching max shuffle connections | Major | mrv2 | Peter Bacsko | Peter Bacsko | 
| YARN-8866 | Fix a parsing error for crossdomain.xml | Major | build, yarn-ui-v2 | Takanobu Asanuma | Takanobu Asanuma | 
| HDFS-14039 | ec -listPolicies doesn’t show correct state for the default policy when the default is not RS(6,3) | Major | erasure-coding | Xiao Chen | Kitti Nanasi | 
| HADOOP-15916 | Upgrade Maven Surefire plugin to 3.0.0-M1 | Blocker | build | Akira Ajisaka | Akira Ajisaka | 
| YARN-9002 | YARN Service keytab does not support s3, wasb, gs and is restricted to HDFS and local filesystem only | Major | yarn-native-services | Gour Saha | Gour Saha | 
| YARN-8233 | NPE in CapacityScheduler#tryCommit when handling allocate/reserve proposal whose allocatedOrReservedContainer is null | Critical | capacityscheduler | Tao Yang | Tao Yang | 
| HDFS-14065 | Failed Storage Locations shows nothing in the Datanode Volume Failures | Major | . | Ayush Saxena | Ayush Saxena | 
| HADOOP-15923 | create-release script should set max-cache-ttl as well as default-cache-ttl for gpg-agent | Blocker | build | Akira Ajisaka | Akira Ajisaka | 
| HADOOP-15912 | start-build-env.sh still creates an invalid /etc/sudoers.d/hadoop-build-${USER_ID} file entry after HADOOP-15802 | Major | build | Akira Ajisaka | Akira Ajisaka | 
| HADOOP-15869 | BlockDecompressorStream#decompress should not return -1 in case of IOException. | Major | . | Surendra Singh Lilhore | Surendra Singh Lilhore | 
| MAPREDUCE-7158 | Inefficient Flush Logic in JobHistory EventWriter | Major | . | Zichen Sun | Zichen Sun | 
| HADOOP-15930 | Exclude MD5 checksum files from release artifact | Critical | build | Akira Ajisaka | Akira Ajisaka | 
| HADOOP-15925 | The config and log of gpg-agent are removed in create-release script | Major | build | Akira Ajisaka | Dinesh Chitlangia | 
| HDFS-13963 | NN UI is broken with IE11 | Minor | namenode, ui | Daisuke Kobayashi | Ayush Saxena | 
| HDFS-14056 | Fix error messages in HDFS-12716 | Minor | hdfs | Adam Antal | Ayush Saxena | 
| MAPREDUCE-7162 | TestEvents#testEvents fails | Critical | jobhistoryserver, test | Zhaohui Xin | Zhaohui Xin | 
| YARN-9056 | Yarn Service Upgrade: Instance state changes from UPGRADING to READY without performing a readiness check | Critical | . | Chandni Singh | Chandni Singh | 
| YARN-8812 | Containers fail during creating a symlink which started with hyphen for a resource file | Minor | . | Oleksandr Shevchenko | Oleksandr Shevchenko | 
| YARN-9067 | YARN Resource Manager is running OOM because of leak of Configuration Object | Major | yarn-native-services | Eric Yang | Eric Yang | 
| MAPREDUCE-7165 | mapred-site.xml is misformatted in single node setup document | Major | documentation | Akira Ajisaka | Zhaohui Xin | 
| HADOOP-15970 | Upgrade plexus-utils from 2.0.5 to 3.1.0 | Major | security | Akira Ajisaka | Akira Ajisaka | 
| HADOOP-15974 | Upgrade Curator version to 2.13.0 to fix ZK tests | Major | . | Jason Lowe | Akira Ajisaka | 
| YARN-9071 | NM and service AM don’t have updated status for reinitialized containers | Critical | . | Billie Rinaldi | Chandni Singh | 
| MAPREDUCE-7159 | FrameworkUploader: ensure proper permissions of generated framework tar.gz if restrictive umask is used | Major | mrv2 | Peter Bacsko | Peter Bacsko | 
| YARN-9009 | Fix flaky test TestEntityGroupFSTimelineStore.testCleanLogs | Minor | . | OrDTesters | OrDTesters | 
| MAPREDUCE-7170 | Doc typo in PluggableShuffleAndPluggableSort.md | Minor | documentation | Zhaohui Xin | Zhaohui Xin | 
| YARN-9040 | LevelDBCacheTimelineStore in ATS 1.5 leaks native memory | Major | timelineserver | Tarun Parimi | Tarun Parimi | 
| YARN-9084 | Service Upgrade: With default readiness check, the status of upgrade is reported to be successful prematurely | Major | . | Chandni Singh | Chandni Singh | 
| HDFS-13661 | Ls command with e option fails when the filesystem is not HDFS | Major | erasure-coding, tools | Takanobu Asanuma | Takanobu Asanuma | 
| HADOOP-15973 | Configuration: Included properties are not cached if resource is a stream | Critical | . | Eric Payne | Eric Payne | 
| YARN-9154 | Fix itemization in YARN service quickstart document | Minor | documentation | Akira Ajisaka | Ayush Saxena | 
| HDFS-14166 | Ls with -e option not giving the result in proper format | Major | . | Soumyapn | Shubham Dewan | 
| HDFS-14046 | In-Maintenance ICON is missing in datanode info page | Major | datanode | Harshakiran Reddy | Ranith Sardar | 
| MAPREDUCE-7174 | MapReduce example wordmedian should handle generic options | Major | . | Fei Hui | Fei Hui | 
| YARN-9164 | Shutdown NM may cause NPE when opportunistic container scheduling is enabled | Critical | . | lujie | lujie | 
| HADOOP-15997 | KMS client uses wrong UGI after HADOOP-14445 | Blocker | kms | Wei-Chiu Chuang | Wei-Chiu Chuang | 
| HADOOP-15992 | JSON License is included in the transitive dependency of aliyun-sdk-oss 3.0.0 | Blocker | . | Akira Ajisaka | Akira Ajisaka | 
| HADOOP-16030 | AliyunOSS: bring fixes back from HADOOP-15671 | Blocker | fs/oss | wujinhu | wujinhu | 
| YARN-9173 | FairShare calculation broken for large values after YARN-8833 | Major | fairscheduler | Wilfred Spiegelenburg | Wilfred Spiegelenburg | 
| YARN-8833 | Avoid potential integer overflow when computing fair shares | Major | fairscheduler | liyakun | liyakun | 
| YARN-8747 | [UI2] YARN UI2 page loading failed due to js error under some time zone configuration | Critical | webapp | collinma | collinma | 
| YARN-9194 | Invalid event: REGISTERED and LAUNCH_FAILED at FAILED, and NullPointerException happens in RM while shutdown a NM | Critical | . | lujie | lujie | 
| YARN-9204 | RM fails to start if absolute resource is specified for partition capacity in CS queues | Blocker | yarn | Jiandan Yang | Jiandan Yang | 
| YARN-9210 | RM nodes web page can not display node info | Blocker | yarn | Jiandan Yang | Jiandan Yang | 
| YARN-9205 | When using custom resource type, application will fail to run due to the CapacityScheduler throws InvalidResourceRequestException(GREATER_THEN_MAX_ALLOCATION) | Critical | . | Zhankun Tang | Zhankun Tang | 
| HADOOP-15781 | S3A assumed role tests failing due to changed error text in AWS exceptions | Major | fs/s3, test | Steve Loughran | Steve Loughran | 
| HDFS-14228 | Incorrect getSnapshottableDirListing() javadoc | Major | snapshots | Wei-Chiu Chuang | Dinesh Chitlangia |