Uploaded image for project: 'Hive'
  1. Hive
  2. HIVE-15227

Optimize join + gby into semijoin

    XMLWordPrintableJSON

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-15227.2.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

          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

          Activity

            People

              ashutoshc Ashutosh Chauhan
              ashutoshc Ashutosh Chauhan
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: