Details

    • Type: Sub-task
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: tez-branch
    • Fix Version/s: tez-branch
    • Component/s: tez
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      Description

      Implement optimizations for LIMIT when other parts of Pig-on-Tez are more mature. Some of the optimizations mentioned by Daniel include:

      1. If the previous stage using 1 reduce, no need to add one more vertex
      2. If the limitplan is null (ie, not the "limited order by" case), we might not need a shuffle edge, a pass through edge should be enough if possible
      3. Similar to PIG-1270, we can push limit to InputHandler
      4. We also need to think through the "limited order by" case once "order by" is implemented

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            • Assignee:
              abain Alex Bain
              Reporter:
              abain Alex Bain
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