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  1. Hive
  2. HIVE-15227

Optimize join + gby into semijoin

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 2.2.0
    • Logical Optimizer

    Description

      Calcite has a rule which can do this transformation. Lets take advantage of this since Hive has native Left semi join operator.

      Attachments

        1. HIVE-15227.4.patch
          50 kB
          Ashutosh Chauhan
        2. HIVE-15227.3.patch
          42 kB
          Ashutosh Chauhan
        3. HIVE-15227.2.patch
          12 kB
          Ashutosh Chauhan
        4. HIVE-15227.patch
          7 kB
          Ashutosh Chauhan

        Issue Links

        is related to

        Improvement - An improvement or enhancement to an existing feature or task. HIVE-15894 Add logical semijoin config in sqlstd safe list

        • Major - Major loss of function.
        • Closed
        links to

        Web Link RB request

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            ashutoshc Ashutosh Chauhan Assign to me
            ashutoshc Ashutosh Chauhan
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              Updated:
              Resolved:

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