Hadoop Map/Reduce
  1. Hadoop Map/Reduce
  2. MAPREDUCE-3678

The Map tasks logs should have the value of input split it processed

    Details

    • Type: New Feature New Feature
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 1.0.0, 2.0.0-alpha
    • Fix Version/s: 1.2.0, 2.0.3-alpha
    • Component/s: mrv1, mrv2
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
      A map-task's syslogs now carries basic info on the InputSplit it processed.

      Description

      It would be easier to debug some corner in tasks if we knew what was the input split processed by that task. Map reduce task tracker log should accommodate the same. Also in the jobdetails web UI, the split also should be displayed along with the Split Locations.

      Sample as
      Input Split
      hdfs://myserver:9000/userdata/sampleapp/inputdir/file1.csv - <split no>/<offset from beginning of file>

      This would be much beneficial to nail down some data quality issues in large data volume processing.

      1. MAPREDUCE-3678-branch-1.patch
        0.9 kB
        Harsh J
      2. MAPREDUCE-3678.patch
        1 kB
        Harsh J

        Issue Links

          Activity

          Bejoy KS created issue -
          Harsh J made changes -
          Field Original Value New Value
          Assignee Harsh J [ qwertymaniac ]
          Harsh J made changes -
          Release Note A Map Task's syslogs now carries basic info on the InputSplit it processed.
          Affects Version/s 2.0.0-alpha [ 12320354 ]
          Affects Version/s 0.20.203.0 [ 12316151 ]
          Affects Version/s 0.20.205.0 [ 12316391 ]
          Target Version/s 1.2.0, 2.2.0-alpha [ 12321661, 12322471 ]
          Environment Linux red hat.
          Harsh J made changes -
          Link This issue duplicates MAPREDUCE-2076 [ MAPREDUCE-2076 ]
          Harsh J made changes -
          Attachment MAPREDUCE-3678-branch-1.patch [ 12537724 ]
          Harsh J made changes -
          Attachment MAPREDUCE-3678.patch [ 12537726 ]
          Harsh J made changes -
          Status Open [ 1 ] Patch Available [ 10002 ]
          Release Note A Map Task's syslogs now carries basic info on the InputSplit it processed. A map-task's syslogs now carries basic info on the InputSplit it processed.
          Harsh J made changes -
          Status Patch Available [ 10002 ] Resolved [ 5 ]
          Hadoop Flags Reviewed [ 10343 ]
          Target Version/s 1.2.0, 2.0.2-alpha [ 12321661, 12322471 ]
          Fix Version/s 1.2.0 [ 12321661 ]
          Fix Version/s 2.0.3-alpha [ 12323275 ]
          Resolution Fixed [ 1 ]
          Harsh J made changes -
          Component/s mrv1 [ 12315344 ]
          Component/s mrv2 [ 12314301 ]
          Component/s tasktracker [ 12312906 ]
          Component/s nodemanager [ 12315341 ]
          Arun C Murthy made changes -
          Status Resolved [ 5 ] Closed [ 6 ]

            People

            • Assignee:
              Harsh J
              Reporter:
              Bejoy KS
            • Votes:
              0 Vote for this issue
              Watchers:
              8 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Development