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  1. Hadoop Map/Reduce
  2. MAPREDUCE-1463

Reducer should start faster for smaller jobs

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: jobtracker
    • Labels:
      None

      Description

      Our users often complain about the slowness of smaller ad-hoc jobs.
      The overhead to wait for the reducers to start in this case is significant.
      It will be good if we can start the reducer sooner in this case.

        Attachments

        1. MAPREDUCE-1463-v3.patch
          3 kB
          Scott Chen
        2. MAPREDUCE-1463-v2.patch
          3 kB
          Scott Chen
        3. MAPREDUCE-1463-v1.patch
          2 kB
          Scott Chen

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              • Assignee:
                schen Scott Chen
                Reporter:
                schen Scott Chen
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                Dates

                • Created:
                  Updated: