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  1. Hive
  2. HIVE-22507

KeyWrapper comparator create field comparator instances at every comparison

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 4.0.0
    • Component/s: Physical Optimizer
    • Labels:
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      Description

      TopNKeyOperator.KeyWrapperComparator uses separate comparators for each field of the keys. Every time when TopNKeyOperator.KeyWrapperComparator.compare is called a new instance of the field operators are created.

      The field comparators should be created prior any comparison. Probably in the constructor of KeyWrapperComparator or during initializeOp.

      https://github.com/apache/hive/blob/fc81b8909b1a0e6aa15900387a98bccf38ae2247/serde/src/java/org/apache/hadoop/hive/serde2/objectinspector/ObjectInspectorUtils.java#L964
       

        Attachments

        1. HIVE-22507.2.patch
          4 kB
          Krisztian Kasa
        2. HIVE-22507.2.patch
          4 kB
          Krisztian Kasa
        3. HIVE-22507.1.patch
          4 kB
          Krisztian Kasa

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              • Assignee:
                kkasa Krisztian Kasa
                Reporter:
                kkasa Krisztian Kasa
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                • Created:
                  Updated:
                  Resolved: