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  1. Pig
  2. PIG-5211

Optimize Nested Limited Sort

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.17.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Currently in FOREACH clause, if both LIMIT and ORDER BY are present, pig stores all elements and sort them. It should use a priority queue to be more efficient in space.

        Attachments

        1. pig-5211-testfix-postcommit.patch
          0.6 kB
          Koji Noguchi
        2. PIG-5211-5.patch
          38 kB
          Jin Sun
        3. PIG-5211-4.patch
          35 kB
          Jin Sun
        4. PIG-5211-3.patch
          34 kB
          Jin Sun
        5. PIG-5211-2.patch
          23 kB
          Jin Sun
        6. PIG-5211-1.patch
          13 kB
          Jin Sun

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              • Assignee:
                jins Jin Sun
                Reporter:
                jins Jin Sun
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                Dates

                • Created:
                  Updated:
                  Resolved: