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  1. Hive
  2. HIVE-12325

Turn hive.map.groupby.sorted on by default

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 2.0.0
    • Logical Optimizer
    • None

    Description

      When applicable it can avoid shuffle phase altogether for group by, which will be a performance win.

      Attachments

        1. HIVE-12325.1.patch
          7 kB
          Chetna Chaudhari

        Issue Links

          relates to

          Improvement - An improvement or enhancement to an existing feature or task. HIVE-3432 perform a map-only group by if grouping key matches the sorting properties of the table

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. HIVE-4281 add hive.map.groupby.sorted.testmode

          • Major - Major loss of function.
          • Closed

          Activity

            People

              chetna Chetna Chaudhari
              ashutoshc Ashutosh Chauhan
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              Dates

                Created:
                Updated:
                Resolved: