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  1. Bug HDFS-5432
    TestDatanodeJsp fails on Windows due to assumption that loopback address resolves to host name localhost.
  2. Improvement HDFS-5833
    SecondaryNameNode have an incorrect java doc
  3. Improvement HDFS-5825
    Use FileUtils.copyFile() to implement DFSTestUtils.copyFile()
  4. Bug HDFS-5666
    Fix inconsistent synchronization in BPOfferService
  5. Bug HDFS-5844
    Fix broken link in WebHDFS.apt.vm
  6. Bug HDFS-5675
    Add Mkdirs operation to NNThroughputBenchmark
  7. Bug HDFS-5560
    Trash configuration log statements prints incorrect units
  8. Bug HDFS-5408
    Optional fields in PB definitions should be optional in HTTP deserialization as well
  9. Bug HDFS-5443
    Delete 0-sized block when deleting an under-construction file that is included in snapshot
  10. Bug HDFS-5365
    Fix libhdfs compile error on FreeBSD9
  11. Bug HDFS-5504
    In HA mode, OP_DELETE_SNAPSHOT is not decrementing the safemode threshold, leads to NN safemode.
  12. Bug HDFS-5413
    hdfs.cmd does not support passthrough to any arbitrary class.
  13. Bug HDFS-5427
    not able to read deleted files from snapshot directly under snapshottable dir after checkpoint and NN restart
  14. Bug HDFS-5425
    Renaming underconstruction file with snapshots can make NN failure on restart
  15. Bug HDFS-5428
    under construction files deletion after snapshot+checkpoint+nn restart leads nn safemode
  16. Bug HDFS-5400
    DFS_CLIENT_MMAP_CACHE_THREAD_RUNS_PER_TIMEOUT constant is set to the wrong value
  17. Bug HDFS-5474
    Deletesnapshot can make Namenode in safemode on NN restarts.
  18. Bug HDFS-5476
    Snapshot: clean the blocks/files/directories under a renamed file/directory while deletion
  19. Bug HDFS-5403
    WebHdfs client cannot communicate with older WebHdfs servers post HDFS-5306
  20. Bug HDFS-5257
    addBlock() retry should return LocatedBlock with locations else client will get AIOBE
  21. Bug HDFS-5074
    Allow starting up from an fsimage checkpoint in the middle of a segment
  22. Bug HDFS-5065
    TestSymlinkHdfsDisable fails on Windows
  23. Bug HDFS-4633
    TestDFSClientExcludedNodes fails sporadically if excluded nodes cache expires too quickly
  24. New Feature HDFS-2832
    Enable support for heterogeneous storages in HDFS - DN as a collection of storages
  25. Bug HDFS-4997
    libhdfs doesn't return correct error codes in most cases
  26. Bug HDFS-5297
    Fix dead links in HDFS site documents
  27. Bug HDFS-4201
    NPE in BPServiceActor#sendHeartBeat
  28. Bug HDFS-5921
    Cannot browse file system via NN web UI if any directory has the sticky bit set
  29. Bug HDFS-5433
    When reloading fsimage during checkpointing, we should clear existing snapshottable directories
  30. Bug HDFS-5438
    Flaws in block report processing can cause data loss
  31. Bug HDFS-5456
    NameNode startup progress creates new steps if caller attempts to create a counter for a step that doesn't already exist.
  32. Bug HDFS-4516
    Client crash after block allocation and NN switch before lease recovery for the same file can cause readers to fail forever
  33. Bug HDFS-5353
    Short circuit reads fail when dfs.encrypt.data.transfer is enabled
  34. Bug HDFS-5449
    WebHdfs compatibility broken between 2.2 and 1.x / 23.x
  35. Bug HDFS-5526
    Datanode cannot roll back to previous layout version
  36. Bug HDFS-5830
    WebHdfsFileSystem.getFileBlockLocations throws IllegalArgumentException when accessing another cluster.
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