Details

    • Type: Sub-task Sub-task
    • Status: Closed
    • Priority: Blocker Blocker
    • Resolution: Fixed
    • Affects Version/s: 0.23.0
    • Fix Version/s: 0.23.1
    • Component/s: mr-am, mrv2
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
      Batching JobHistory flushing to DFS so that we don't flush for every event slowing down AM.

      Description

      The mr-am flushes each individual job history event to disk for AM recovery. The history even handler ends up with a significant backlog for tests like MAPREDUCE-3402.
      History events could be batched up based on num records / time / TaskFinishedEvents to reduce the number of DFS writes - with the potential drawback of having to rerun some tasks during AM recovery.

      1. MAPREDUCE-3512-20120111.txt
        25 kB
        Vinod Kumar Vavilapalli
      2. MR3512.txt
        25 kB
        Siddharth Seth
      3. MR3512.txt
        9 kB
        Siddharth Seth

        Activity

        Siddharth Seth created issue -
        Siddharth Seth made changes -
        Field Original Value New Value
        Link This issue is blocked by MAPREDUCE-3402 [ MAPREDUCE-3402 ]
        Vinod Kumar Vavilapalli made changes -
        Link This issue is blocked by MAPREDUCE-3402 [ MAPREDUCE-3402 ]
        Vinod Kumar Vavilapalli made changes -
        Parent MAPREDUCE-3561 [ 12535237 ]
        Issue Type Improvement [ 4 ] Sub-task [ 7 ]
        Mahadev konar made changes -
        Priority Major [ 3 ] Critical [ 2 ]
        Siddharth Seth made changes -
        Assignee Siddharth Seth [ sseth ]
        Arun C Murthy made changes -
        Priority Critical [ 2 ] Blocker [ 1 ]
        Siddharth Seth made changes -
        Attachment MR3512.txt [ 12510083 ]
        Siddharth Seth made changes -
        Attachment MR3512.txt [ 12510129 ]
        Siddharth Seth made changes -
        Status Open [ 1 ] Patch Available [ 10002 ]
        Vinod Kumar Vavilapalli made changes -
        Attachment MAPREDUCE-3512-20120111.txt [ 12510270 ]
        Vinod Kumar Vavilapalli made changes -
        Status Patch Available [ 10002 ] Open [ 1 ]
        Fix Version/s 0.23.1 [ 12318883 ]
        Vinod Kumar Vavilapalli made changes -
        Status Open [ 1 ] Patch Available [ 10002 ]
        Hadoop Flags Reviewed [ 10343 ]
        Vinod Kumar Vavilapalli made changes -
        Status Patch Available [ 10002 ] Resolved [ 5 ]
        Release Note Batching JobHistory flushing to DFS so that we don't flush for every event slowing down AM.
        Resolution Fixed [ 1 ]
        Arun C Murthy made changes -
        Status Resolved [ 5 ] Closed [ 6 ]

          People

          • Assignee:
            Siddharth Seth
            Reporter:
            Siddharth Seth
          • Votes:
            0 Vote for this issue
            Watchers:
            3 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development