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  1. Hive
  2. HIVE-12508

HiveAggregateJoinTransposeRule places a heavy load on the metadata system

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Duplicate
    • 2.0.0
    • 2.0.0
    • CBO
    • None

    Description

      Finding out whether the input is already unique requires a call to areColumnsUnique that currently (until CALCITE-794 is fixed) places a heavy load on the metadata system. This can lead to long CBO planning.

      This is a temporary fix that avoid the call to the method till then.

      Attachments

        1. HIVE-12508.patch
          4 kB
          jcamachorodriguez

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. HIVE-12503 GBY-Join transpose rule may go in infinite loop

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

          Bug - A problem which impairs or prevents the functions of the product. CALCITE-794 Detect cycles when computing statistics

          • Major - Major loss of function.
          • Closed

          New Feature - A new feature of the product, which has yet to be developed. HIVE-10785 Support aggregate push down through joins

          • Major - Major loss of function.
          • Closed

          Activity

            People

              jcamacho Jesús Camacho Rodríguez
              jcamacho Jesús Camacho Rodríguez
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              Dates

                Created:
                Updated:
                Resolved: