Hive
  1. Hive
  2. HIVE-1743

Group-by to determine equals of Keys in reverse order

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Minor Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.7.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      When processing group-by, in reduce side, keys are ordered. Comparing equality of two keys can be more efficient in reverse order.

        Activity

        Hide
        Namit Jain added a comment -

        Committed. Thanks Siying

        Show
        Namit Jain added a comment - Committed. Thanks Siying
        Hide
        Namit Jain added a comment -

        +1

        running tests

        Show
        Namit Jain added a comment - +1 running tests
        Hide
        Siying Dong added a comment -

        Use revers order to compare list of keys. Also a couple of minor bugs in GenericUDF OP codes.

        Show
        Siying Dong added a comment - Use revers order to compare list of keys. Also a couple of minor bugs in GenericUDF OP codes.

          People

          • Assignee:
            Siying Dong
            Reporter:
            Siying Dong
          • Votes:
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            Watchers:
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            Dates

            • Created:
              Updated:
              Resolved:

              Development