Uploaded image for project: 'Hadoop Map/Reduce'
  1. Hadoop Map/Reduce
  2. MAPREDUCE-6978

MR task counters deserialized through RPC throws OutOfBoundsException if Counter enum class version not match

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: 3.0.0-alpha4
    • Fix Version/s: None
    • Component/s: mr-am, task
    • Labels:
      None
    • Environment:

      NM1 TaskCounter.class old version;
      NM2 TaskCounter.class new version (new Enumeration values appended);

      Description

      Environment:
      NM1 TaskCounter.class old version;
      NM2 TaskCounter.class new version (new Enumeration values appended);

      Result:
      When an MR app's AM running on NM1, and it's containers on NM2; the containers on NM2 will all failed, AM cause OutOfBoundsException;

      Reason:
      When app running, containers will report their counters to AM through RPC, while the Container with new version TaskCounter.class will write more Counter values to RPC; however, the AM with old version TaskCounter.class which can not read them correctly from RPC.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                Unassigned
                Reporter:
                NeoMatrix rangjiaheng
              • Votes:
                0 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: