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HDFS-8307
Spurious DNS Queries from hdfs shellHDFS-11839
Backport HDFS-9726 to branch-2.7: Refactor IBR code to a new classHDFS-11717
Add unit test for HDFS-11709 StandbyCheckpointer should handle non-existing legacyOivImageDir gracefully
TestBalancer#testUnknownDatanodeSimple and testBalancerWithKeytabs are flaky in branch-2.7
Document the configuration key for FSNamesystem lock fairness
Wrong HttpFS test command in doc
Doc about upgrading to a version of HDFS with snapshots may be confusing
Implement a space balanced block placement policy
option to disable fsck dots
Add option for balancer to disperse getBlocks calls to avoid NameNode's rpc.CallQueueLength spike
Fix NPE in LazyPersistFileScrubber
name node fail over failed with ssh fence failed because of jsch login failed with key check
Backport HDFS-7990 to branch-2.7: IBR delete ack should not be delayed
Fix findbugs warning in branch-2.7
Parent spans are not initialized to NullScope for every DFSPacket
Backport HDFS-9412 to branch-2.7: getBlocks occupies FSLock and takes too long to complete
Backport HDFS-9710 to branch-2.7: Change DN to send block receipt IBRs in batches
Backport HDFS-8549 to branch-2.7: Abort the balancer if an upgrade is in progress
Fix TestDFSShell.testMoveWithTargetPortEmpty failure.
Document Metrics to track usage of memory for writes
Backport HDFS-6291 to branch 2.7
Backport HDFS-8674 to branch 2.7
Backport HDFS-11078 to branch 2.7
Ability to re-add Upgrading Nodes (remote) to pipeline for future pipeline updates
Fix ASF Licence warnings in branch-2.7
OIV tests should not write outside 'target' directory.
Optimize BlockIterator when iterating starts in the middle.
NameNode WebUI should display DataNode usage histogram
NPE when applying AvailableSpaceBlockPlacementPolicy
BlockManager.processReport() should print blockReportId in each log message.
FileDistribution fails in hdfs oiv command due to ArrayIndexOutOfBoundsException
NameNode terminated after full GC thinking QJM is unresponsive.
Change dfs.namenode.write-lock-reporting-threshold-ms default from 1000ms to 5000ms
Make the threshold of reporting FSNamesystem lock contention configurable
Add Logging for Long-held NN Read LocksHDFS-10896
Move lock logging logic from FSNamesystem into FSNamesystemLock
Fix broken attr/getfattr/setfattr links in ExtendedAttributes.md
Client close() should not fail fast if the last block is being decommissioned
Balancer hung due to no available mover threads
Tighten the authorization of datanode RPC
build hadoop in windows 7/10 64 bit using Visual C++ Build Tools Standalone compiler, dotnet 4.5
Support different values of dfs.datanode.du.reserved per storage type
getBlocks occupies FSLock and takes too long to complete
Change DN to send block receipt IBRs in batches
Fix TestDataNodeVolumeFailure on 2.* branches.
Volume Scanner marks a block as "suspect" even if the exception is network-related
VolumeScanner to report why a block is found bad
datanodesSoftwareVersions map may counting wrong when rolling upgrade
getNumEncryptionZones causes NPE in branch-2.7
VolumeScanner reports write-in-progress replicas as corrupt incorrectly