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  1. Hive
  2. HIVE-9984

JoinReorder's getOutputSize is exponential

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.2.0
    • Component/s: None
    • Labels:

      Description

      Found by Mostafa Mokhtar. Causes major issues in large plans (50+ joins). Simple fix would be to memoize the recursion. There should also be a flag to switch this opt off.

        Attachments

        1. HIVE-9984.1.patch
          5 kB
          Gunther Hagleitner
        2. HIVE-9984.2.patch
          4 kB
          Gopal V

          Activity

            People

            • Assignee:
              gopalv Gopal V
              Reporter:
              hagleitn Gunther Hagleitner
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              Dates

              • Created:
                Updated:
                Resolved: