Hadoop Map/Reduce
  1. Hadoop Map/Reduce
  2. MAPREDUCE-4592

Collect statistics on key distributions/samples in intermediate data

    Details

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

      Description

      Some jobs would benefit from statistics about the key distribution of intermediate data, including sampling for jobs implementing a total-order in the job. These data can inform a policy for handling skew.

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            • Assignee:
              Unassigned
              Reporter:
              Chris Douglas
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              • Created:
                Updated:

                Development