THIS IS A TEST INSTANCE THIS IS A TEST INSTANCE THIS IS A TEST INSTANCE THIS IS A TEST INSTANCE THIS IS A TEST INSTANCE

DO NOT USE THIS INSTANCE FOR LIVE DATA!!!!

  1. Sub-task HDFS-6042
    Fix rolling upgrade documentation and error messges
  2. Sub-task HDFS-6034
    DN registration should use DataNodeLayoutVersion instead of NameNodeLayoutVersion
  3. Sub-task HDFS-6031
    NN running newer software rejects loading the fsimage during rolling upgrade.
  4. Sub-task HDFS-6026
    Fix TestDFSUpgrade and TestDataNodeRollingUpgrade
  5. Sub-task HDFS-6020
    Fix the five findbugs warnings
  6. Sub-task HDFS-6017
    Query the status of rolling upgrade in the preparation stage in TestRollingUpgrade and TestRollingUpgradeRollback
  7. Sub-task HDFS-6015
    Fix TestBlockRecovery#testRaceBetweenReplicaRecoveryAndFinalizeBlock
  8. Sub-task HDFS-6014
    Fix findbug warnings introduced by HDFS-5583
  9. Sub-task HDFS-6013
    add rollingUpgrade information to latest UI
  10. Sub-task HDFS-6005
    Simplify Datanode rollback and downgrade
  11. Sub-task HDFS-6004
    Change DFSAdmin for rolling upgrade commands
  12. Sub-task HDFS-6003
    Add '-rollingUpgrade <rollback|downgrade>' to namenode usage message
  13. Sub-task HDFS-5994
    Fix TestDataNodeRollingUpgrade failure
  14. Sub-task HDFS-5992
    Fix TestOfflineEditsViewer and NPE in MD5FileUtils
  15. Sub-task HDFS-5987
    Fix findbugs warnings in Rolling Upgrade branch
  16. Sub-task HDFS-5985
    SimulatedFSDataset#disableAndPurgeTrashStorage should not throw UnsupportedOperationException
  17. Sub-task HDFS-5984
    Fix TestEditLog and TestStandbyCheckpoints
  18. Sub-task HDFS-5980
    Rollback does not need to load edits
  19. Sub-task HDFS-5976
    Create unit tests for downgrade and finalize
  20. Sub-task HDFS-5974
    Fix compilation error after merge
  21. Sub-task HDFS-5966
    Fix rollback of rolling upgrade in NameNode HA setup
  22. Sub-task HDFS-5963
    TestRollingUpgrade#testSecondaryNameNode causes subsequent tests to fail
  23. Sub-task HDFS-5960
    Fix TestRollingUpgrade
  24. Sub-task HDFS-5954
    Merge Protobuf-based-FSImage code from trunk
  25. Sub-task HDFS-5945
    Add rolling upgrade information to fsimage
  26. Sub-task HDFS-5924
    Utilize OOB upgrade message processing for writes
  27. Sub-task HDFS-5907
    BlockPoolSliceStorage trash to handle block deletions during rolling upgrade
  28. Sub-task HDFS-5890
    Avoid NPE in Datanode heartbeat
  29. Sub-task HDFS-5889
    When rolling upgrade is in progress, standby NN should create checkpoint for downgrade.
  30. Sub-task HDFS-5874
    Should not compare DataNode current layout version with that of NameNode in DataStrorage
  31. Sub-task HDFS-5869
    When rolling upgrade is in progress, NN should only create checkpoint right before the upgrade marker
  32. Sub-task HDFS-5848
    Add rolling upgrade infomation to heartbeat response
  33. Sub-task HDFS-5835
    Add a new option for starting standby NN when rolling upgrade is in progress
  34. Sub-task HDFS-5786
    Support query and finalize rolling upgrade
  35. Sub-task HDFS-5778
    Document new commands and parameters for improved rolling upgrades
  36. Sub-task HDFS-5754
    Split LayoutVerion into NamenodeLayoutVersion and DatanodeLayoutVersion
  37. Sub-task HDFS-5753
    Add new NN startup options for downgrade and rollback using upgrade marker
  38. Sub-task HDFS-5752
    Add a new DFSAdminCommand for rolling upgrade
  39. Sub-task HDFS-5645
    Support upgrade marker in editlog streams
  40. Sub-task HDFS-5585
    Provide admin commands for data node upgrade
  41. Sub-task HDFS-5583
    Make DN send an OOB Ack on shutdown before restarting
  42. Sub-task HDFS-5498
    Improve datanode startup time
  43. Sub-task HDFS-5496
    Make replication queue initialization asynchronous
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