Uploaded image for project: 'Hadoop Common'
  1. Hadoop Common
  2. HADOOP-3333

job failing because of reassigning same tasktracker to failing tasks

VotersWatch issueWatchersCreate sub-taskLinkCloneUpdate Comment AuthorReplace String in CommentUpdate Comment VisibilityDelete Comments
    XMLWordPrintableJSON

Details

    • Bug
    • Status: Closed
    • Blocker
    • Resolution: Fixed
    • 0.16.3
    • 0.18.0
    • None
    • None
    • Reviewed

    Description

      We have a long running a job in a 2nd atttempt. Previous job was failing and current jobs risks to fail as well, because reduce tasks failing on marginal TaskTrackers are assigned repeatedly to the same TaskTrackers (probably because it is the only available slot), eventually running out of attempts.
      Reduce tasks should be assigned to the same TaskTrackers at most twice, or TaskTrackers need to get some better smarts to find failing hardware.
      BTW, mapred.reduce.max.attempts=12, which is high, but does not help in this case.

      Attachments

        1. hadoop-3333-v3.patch
          17 kB
          Jothi Padmanabhan
        2. hadoop-3333-v2.patch
          16 kB
          Jothi Padmanabhan
        3. hadoop-3333-v1.patch
          16 kB
          Jothi Padmanabhan
        4. hadoop-3333.patch
          16 kB
          Jothi Padmanabhan
        5. HADOOP-3333_2_20080506.patch
          12 kB
          Arun Murthy
        6. HADOOP-3333_1_20080505.patch
          11 kB
          Arun Murthy
        7. HADOOP-3333_0_20080503.patch
          9 kB
          Arun Murthy

        Issue Links

        Activity

          This comment will be Viewable by All Users Viewable by All Users
          Cancel

          People

            jothipn Jothi Padmanabhan
            ckunz Christian Kunz
            Votes:
            0 Vote for this issue
            Watchers:
            0 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved:

              Slack

                Issue deployment