Hadoop Common
  1. Hadoop Common
  2. HADOOP-5572

The map progress value should have a separate phase for doing the final sort.

    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

      Currently, the final spill and sort doesn't record any progress while it runs, leading to the perception that the map is done, but "stuck".

      This patch reserves 33.3% of map task's progress to sort by dividing map task in to 2 phases. Also makes the progress of sort phase(merges) work, both in map side and reduce side.

      1. HADOOP-5572.v1.patch
        35 kB
        Ravi Gummadi
      2. HADOOP-5572.v1.4.patch
        41 kB
        Ravi Gummadi
      3. HADOOP-5572.v1.3.patch
        39 kB
        Ravi Gummadi
      4. HADOOP-5572.v1.2.patch
        38 kB
        Ravi Gummadi
      5. HADOOP-5572.v1.1.patch
        36 kB
        Ravi Gummadi
      6. HADOOP-5572.patch
        33 kB
        Ravi Gummadi

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

              • Created:
                Updated:
                Resolved:

                Development