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  1. Hadoop Map/Reduce
  2. MAPREDUCE-63

TaskTracker falls into an infinite loop.

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Details

    • Bug
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • None
    • None

    Description

      All maps had been completed successfully. I had only one reduce task during which
      TaskTracker infinitely outputs:

      07/05/15 19:35:41 INFO mapred.TaskTracker: task_0001_r_000000_0 0.16666667% reduce > copy (4 of 8 at 0.00 MB/s) >
      07/05/15 19:35:42 INFO mapred.TaskTracker: task_0001_r_000000_0 0.16666667% reduce > copy (4 of 8 at 0.00 MB/s) >
      07/05/15 19:35:43 INFO mapred.TaskTracker: task_0001_r_000000_0 0.16666667% reduce > copy (4 of 8 at 0.00 MB/s) >
      07/05/15 19:35:44 INFO mapred.TaskTracker: task_0001_r_000000_0 0.16666667% reduce > copy (4 of 8 at 0.00 MB/s) >
      07/05/15 19:35:45 INFO mapred.TaskTracker: task_0001_r_000000_0 0.16666667% reduce > copy (4 of 8 at 0.00 MB/s) >

      JobTracker does not log anything about task task_0001_r_000000_0 except for
      07/05/15 19:49:01 INFO mapred.JobTracker: Adding task 'task_0001_r_000000_0' to tip tip_0001_r_000000, for tracker 'tracker_my-host.com:50050'

      Attachments

        1. DataNode1.log
          6 kB
          Konstantin Shvachko
        2. DataNode2.log
          7 kB
          Konstantin Shvachko
        3. hadoop-1374-yunhong.tar.gz
          4 kB
          Yunhong Gu
        4. JobTracker.log
          11 kB
          Konstantin Shvachko
        5. NameNode.log
          4 kB
          Konstantin Shvachko
        6. TaskTracker1.log
          14 kB
          Konstantin Shvachko
        7. TaskTracker2.log
          9 kB
          Konstantin Shvachko
        8. TestDFSIO.log
          0.9 kB

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            acmurthy Arun Murthy
            shv Konstantin Shvachko

            Dates

              Created:
              Updated:

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