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  1. Improvement YARN-2159
    Better logging in SchedulerNode#allocateContainer
  2. Test YARN-2011
    Fix typo and warning in TestLeafQueue
  3. Test YARN-2224
    Explicitly enable vmem check in TestContainersMonitor#testContainerKillOnMemoryOverflow
  4. Bug YARN-2204
    TestAMRestart#testAMRestartWithExistingContainers assumes CapacityScheduler
  5. Test YARN-766
    TestNodeManagerShutdown in branch-2 should use Shell to form the output path and a format issue in trunk
  6. Bug YARN-2042
    String shouldn't be compared using == in QueuePlacementRule#NestedUserQueue#getQueueForApp()
  7. Bug YARN-2036
    Document yarn.resourcemanager.hostname in ClusterSetup
  8. Bug YARN-1784
    TestContainerAllocation assumes CapacityScheduler
  9. Bug YARN-2241
    ZKRMStateStore: On startup, show nicer messages if znodes already exist
  10. Task YARN-2125
    ProportionalCapacityPreemptionPolicy should only log CSV when debug enabled
  11. Sub-task YARN-2117
    Close of Reader in TimelineAuthenticationFilterInitializer#initFilter() should be enclosed in finally block
  12. Test YARN-2216
    TestRMApplicationHistoryWriter sometimes fails in trunk
  13. Bug YARN-2163
    WebUI: Order of AppId in apps table should be consistent with ApplicationId.compareTo().
  14. Improvement YARN-1424
    RMAppAttemptImpl should return the DummyApplicationResourceUsageReport for all invalid accesses
  15. Improvement YARN-2061
    Revisit logging levels in ZKRMStateStore
  16. Test YARN-1970
    Prepare YARN codebase for JUnit 4.11.
  17. Test YARN-2270
    TestFSDownload#testDownloadPublicWithStatCache fails in trunk
  18. Improvement YARN-614
    Separate AM failures from hardware failure or YARN error and do not count them to AM retry count
  19. Improvement YARN-4981
    limit the max containers to assign to one application per heartbeart
  20. Bug YARN-1940
    deleteAsUser() terminates early without deleting more files on error
  21. Improvement YARN-1939
    Improve the packaging of AmIpFilter
  22. Sub-task YARN-1757
    NM Recovery. Auxiliary service support.
  23. Bug YARN-2068
    FairScheduler uses the same ResourceCalculator for all policies
  24. Improvement YARN-2030
    Use StateMachine to simplify handleStoreEvent() in RMStateStore
  25. Sub-task YARN-2049
    Delegation token stuff for the timeline sever
  26. Sub-task YARN-2040
    Recover information about finished containers
  27. Improvement YARN-1845
    Elapsed time for failed tasks that never started is wrong
  28. New Feature YARN-1864
    Fair Scheduler Dynamic Hierarchical User Queues
  29. Bug YARN-1885
    RM may not send the app-finished signal after RM restart to some nodes where the application ran before RM restarts
  30. Sub-task YARN-2071
    Enforce more restricted permissions for the directory of Leveldb store
  31. Bug YARN-1981
    Nodemanager version is not updated when a node reconnects
  32. Improvement YARN-1987
    Wrapper for leveldb DBIterator to aid in handling database exceptions
  33. Sub-task YARN-1702
    Expose kill app functionality as part of RM web services
  34. Sub-task YARN-1408
    Preemption caused Invalid State Event: ACQUIRED at KILLED and caused a task timeout for 30mins
  35. Sub-task YARN-1368
    Common work to re-populate containers’ state into scheduler
  36. Sub-task YARN-1367
    After restart NM should resync with the RM without killing containers
  37. Sub-task YARN-1365
    ApplicationMasterService to allow Register of an app that was running before restart
  38. Sub-task YARN-1362
    Distinguish between nodemanager shutdown for decommission vs shutdown for restart
  39. Sub-task YARN-1338
    Recover localized resource cache state upon nodemanager restart
  40. Sub-task YARN-1339
    Recover DeletionService state upon nodemanager restart
  41. Bug YARN-2365
    TestAMRestart.testShouldNotCountFailureToMaxAttemptRetry fails on branch-2
  42. Test YARN-2319
    Fix MiniKdc not close in TestRMWebServicesDelegationTokens.java
  43. Sub-task YARN-1938
    Kerberos authentication for the timeline server
  44. Sub-task YARN-1937
    Add entity-level access control of the timeline data for owners only
  45. Sub-task YARN-1936
    Secured timeline client
  46. Bug YARN-1907
    TestRMApplicationHistoryWriter#testRMWritingMassiveHistory runs slow and intermittently fails
  47. Bug YARN-2167
    LeveldbIterator should get closed in NMLeveldbStateStoreService#loadLocalizationState() within finally block
  48. Bug YARN-2181
    Add preemption info to RM Web UI and add logs when preemption occurs
  49. Bug YARN-2145
    FairScheduler can assign more resources to queue with MaxShare set.
  50. Sub-task YARN-2152
    Recover missing container information
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