Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.18.0
    • Component/s: None
    • Labels:
      None
    • Release Note:
      Improved shuffle so that all fetched map-outputs are kept in-memory before being merged by stalling the shuffle so that the in-memory merge executes and frees up memory for the shuffle.

      Description

      This is intended to be a meta-issue to track various improvements to shuffle/merge in the reducer.

        Attachments

        1. 3366.1.patch
          9 kB
          Devaraj Das
        2. 3366.1.patch
          9 kB
          Devaraj Das
        3. ifile.patch
          9 kB
          Arun C Murthy
        4. HADOOP-3366_0_20080605.patch
          10 kB
          Arun C Murthy
        5. 3366.reducetask.patch
          3 kB
          Devaraj Das
        6. HADOOP-3366_2_20080606.patch
          15 kB
          Arun C Murthy
        7. HADOOP-3366_2_20080606.patch
          16 kB
          Arun C Murthy

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              • Assignee:
                acmurthy Arun C Murthy
                Reporter:
                acmurthy Arun C Murthy
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                Dates

                • Created:
                  Updated:
                  Resolved: