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  1. Pig
  2. PIG-3497

JobControlCompiler should only do reducer estimation when the job has a reduce phase

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.12.0
    • Component/s: None
    • Labels:
      None

      Description

      Currently, JobControlCompiler makes an estimation for the number of reducers required (by default based on input size into mappers) regardless of whether there is a reduce phase in the job. This is unnecessary, especially when running more complex custom reducer estimators.

      Change to only estimate reducers when necessary.

        Attachments

        1. reducer_estimation.patch
          2 kB
          Akihiro Matsukawa

          Activity

            People

            • Assignee:
              amatsukawa Akihiro Matsukawa
              Reporter:
              amatsukawa Akihiro Matsukawa
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              Dates

              • Created:
                Updated:
                Resolved: