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  1. Hive
  2. HIVE-15227

Optimize join + gby into semijoin

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.2.0
    • Component/s: Logical Optimizer
    • Labels:
    • Target Version/s:

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

        Issue Links

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          $i18n.getText('security.level.explanation', $currentSelection) Viewable by All Users
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            People

            • Assignee:
              ashutoshc Ashutosh Chauhan Assign to me
              Reporter:
              ashutoshc Ashutosh Chauhan

              Dates

              • Created:
                Updated:
                Resolved:

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