Hadoop Common
  1. Hadoop Common
  2. HADOOP-2721

Use job control for tasks (and therefore for pipes and streaming)

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.21.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      We should use the setsid command when the task is launched to create a new session. We should be able to use the setsid program when we launch the bash process to create a new session. That will allow us to kill the entire session with a single signal and remove the need for the ping methods in both TaskTracker.Child and pipes.

      The patch uses setsid when creating new tasks sothat subprocesses of this process will be with in this new session(and this process will be the process leader for all the subprocesses). Thus killing the subprocesses becomes easy(just by killing all the processes in this process group) when killing the task.

      1. HADOOP-2721-v11.4.patch
        57 kB
        Ravi Gummadi
      2. HADOOP-2721-v11.3.patch
        58 kB
        Ravi Gummadi
      3. HADOOP-2721-v11.1.patch
        58 kB
        Ravi Gummadi
      4. HADOOP-2721-v11.patch
        56 kB
        Ravi Gummadi
      5. HADOOP-2721-v10.patch
        53 kB
        Ravi Gummadi
      6. HADOOP-2721-v9.patch
        51 kB
        Ravi Gummadi
      7. HADOOP-2721-v3.patch
        34 kB
        Ravi Gummadi
      8. HADOOP-2721-v2.patch
        24 kB
        Ravi Gummadi
      9. HADOOP-2721.patch
        6 kB
        Ravi Gummadi
      10. HADOOP-2721.patch
        6 kB
        Ravi Gummadi
      11. HADOOP-2721.patch
        5 kB
        Ravi Gummadi

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            • Assignee:
              Ravi Gummadi
              Reporter:
              Owen O'Malley
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              Dates

              • Created:
                Updated:
                Resolved:

                Development