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  1. Hadoop Common
  2. HADOOP-3762

Task tracker died due to OOM

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Details

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

    Description

      When running about 100 moderate jobs on a small cluster (with 19 Task Trackers),
      the task trackers all died due to OOM.
      I got a chance to dump the jstack strace of a task tracker before it died.
      Its image size was close 4GB!
      I saw 1200+ threads of DFSClient.LeaseChecker.
      Clearly we have a severe resource leakage problem!

      Attachments

        1. 3762_20080715.patch
          1 kB
          Tsz-wo Sze
        2. 3762_20080715b.patch
          2 kB
          Tsz-wo Sze
        3. 3762_20080715c.patch
          2 kB
          Tsz-wo Sze
        4. 3762_20080717.patch
          7 kB
          Tsz-wo Sze
        5. HADOOP-3762.patch
          6 kB
          Doug Cutting
        6. HADOOP-3762.patch
          3 kB
          Doug Cutting
        7. HADOOP-3762.patch
          3 kB
          Doug Cutting
        8. HADOOP-3762.patch
          2 kB
          Doug Cutting
        9. TaskTrackerStackTrace.txt
          335 kB
          Runping Qi

        Activity

          People

            cutting Doug Cutting
            runping Runping Qi
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            Dates

              Created:
              Updated:
              Resolved: