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  1. Hadoop Map/Reduce
  2. MAPREDUCE-1367

LocalJobRunner should support parallel mapper execution

    Details

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

      Description

      The LocalJobRunner currently supports only a single execution thread. Given the prevalence of multi-core CPUs, it makes sense to allow users to run multiple tasks in parallel for improved performance on small (local-only) jobs.

        Attachments

        1. MAPREDUCE-1367-branch1.patch
          28 kB
          Sandy Ryza
        2. MAPREDUCE-1367.7.patch
          29 kB
          Aaron Kimball
        3. MAPREDUCE-1367.6.patch
          28 kB
          Aaron Kimball
        4. MAPREDUCE-1367.5.patch
          28 kB
          Aaron Kimball
        5. MAPREDUCE-1367.4.patch
          26 kB
          Aaron Kimball
        6. MAPREDUCE-1367.3.patch
          24 kB
          Aaron Kimball
        7. MAPREDUCE-1367.2.patch
          24 kB
          Aaron Kimball
        8. MAPREDUCE-1367.patch
          22 kB
          Aaron Kimball

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              • Assignee:
                kimballa Aaron Kimball
                Reporter:
                kimballa Aaron Kimball
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                Dates

                • Created:
                  Updated:
                  Resolved: