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  1. Pig
  2. PIG-5083

CombinerPackager and LitePackager should not materialize bags

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    Details

    • Type: Bug
    • 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

      Before PIG-3591 and creation of CombinerPackager, POCombinerPackage directly read from the combiner/reducer input instead of materializing the bag.

      https://github.com/apache/pig/blob/branch-0.12/src/org/apache/pig/backend/hadoop/executionengine/physicalLayer/relationalOperators/POCombinerPackage.java#L140-L161

      The unnecessary materialization leads to lot of spills and OOMs in some cases.

        Attachments

        1. PIG-5083-1.patch
          13 kB
          Rohini Palaniswamy

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              • Assignee:
                rohini Rohini Palaniswamy
                Reporter:
                rohini Rohini Palaniswamy
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                • Created:
                  Updated:
                  Resolved: