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HDFS-15211. EC: File write hangs during close in case of Exception during updatePipeline. Contributed by Ayush Saxena.

HDFS-15197. [SBN read] Change ObserverRetryOnActiveException log to debug. Contributed by Chen Liang.

HDFS-15197. [SBN read] Change ObserverRetryOnActiveException log to debug. Contributed by Chen Liang.

HDFS-15197. [SBN read] Change ObserverRetryOnActiveException log to debug. Contributed by Chen Liang.

HDFS-15197. [SBN read] Change ObserverRetryOnActiveException log to debug. Contributed by Chen Liang.

HDFS-15159. Prevent adding same DN multiple times in PendingReconstructionBlocks. Contributed by hemanthboyina.

HDFS-14820. The default 8KB buffer of BlockReaderRemote#newBlockReader#BufferedOutputStream is too big. Contributed by Lisheng Sun.

HDFS-15113. Missing IBR when NameNode restart if open processCommand async feature. Contributed by Xiaoqiao He.

Signed-off-by: Wei-Chiu Chuang <weichiu@apache.org>

Reviewed-by: Brahma Reddy Battula <brahma@apache.org>

Reviewed-by: Inigo Goiri <inigoiri@apache.org>

HDFS-11396. TestNameNodeMetadataConsistency#testGenerationStampInFuture timed out. Contributed by Ayush Saxena

YARN-9567. Add diagnostics for outstanding resource requests on app attempts page. Contributed by Tao Yang.

YARN-9538. Document scheduler/app activities and REST APIs. Contributed by Tao Yang.

HADOOP-16775. DistCp reuses the same temp file within the task for different files.

Contributed by Amir Shenavandeh.

This avoids overwrite consistency issues with S3 and other stores

Change-Id: Ic4d05ef3397e963ba28fd9f775bb362b0da36ad9

HDFS-14743. Enhance INodeAttributeProvider/ AccessControlEnforcer Interface in HDFS to support Authorization of mkdir, rm, rmdir, copy, move etc... (#1829)

Reviewed-by: Xiaoyu Yao <xyao@apache.org>

YARN-10195. Dependency divergence building Timeline Service on HBase 2.2.0 and above. (#1895)

HDFS-15155. writeIoRate of DataNodeVolumeMetrics is never used. Contributed by Haibin Huang.

HDFS-15216. Wrong Use Case of -showprogress in fsck. Contributed by Ravuri Sushma sree.

(cherry picked from commit 25497799cb60a0550355d65466dafb72ee5b387a)

HDFS-15216. Wrong Use Case of -showprogress in fsck. Contributed by Ravuri Sushma sree.

HDFS-15216. Wrong Use Case of -showprogress in fsck. Contributed by Ravuri Sushma sree.

HDFS-15039. Cache meta file length of FinalizedReplica to reduce call File.length(). Contributed by Yang Yun.

HDFS-14612. SlowDiskReport won't update when SlowDisks is always empty in heartbeat. Contributed by Haibin Huang.

HADOOP-15430. hadoop fs -mkdir -p path-ending-with-slash/ fails with s3guard (#1646)

Contributed by Steve Loughran

* move qualify logic to S3AFileSystem.makeQualified()

* make S3AFileSystem.qualify() a private redirect to that

* ITestS3GuardFsShell turned off

HDFS-14442. Disagreement between HAUtil.getAddressOfActive and RpcInvocationHandler.getConnectionId. Contributed by Ravuri Sushma sree.

HDFS-14442. Disagreement between HAUtil.getAddressOfActive and RpcInvocationHandler.getConnectionId. Contributed by Ravuri Sushma sree.

YARN-9997. Code cleanup in ZKConfigurationStore. Contributed by Andras Gyori

YARN-10193. FS-CS converter: fix incorrect capacity conversion. Contributed by Peter Bacsko

YARN-10191. FS-CS converter: call System.exit function call for every code path in main method. Contributed by Peter Bacsko.

HDFS-15077. Fix intermittent failure of TestDFSClientRetries#testLeaseRenewSocketTimeout.

Hadoop 16890. Change in expiry calculation for MSI token provider.

Contributed by Bilahari T H

YARN-10110. Adding RouterPolicyProvider for RM Federation.

Contributed by Bilwa S T.

HDFS-15135. EC : ArrayIndexOutOfBoundsException in BlockRecoveryWorker#RecoveryTaskStriped. Contributed by Ravuri Sushma sree.