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  1. Hive
  2. HIVE-20842

Fix logic introduced in HIVE-20660 to estimate statistics for group by

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 4.0.0
    • Fix Version/s: 4.0.0
    • Component/s: Statistics
    • Labels:
      None

      Description

      HIVE-20660 introduced better estimation for group by operator. But the logic did not account for Partial and Full group by separately.
      For partial group by parallelism (i.e. number of tasks) should be taken into account.

        Attachments

        1. HIVE-20842.1.patch
          2 kB
          Vineet Garg
        2. HIVE-20842.2.patch
          2 kB
          Vineet Garg
        3. HIVE-20842.3.patch
          708 kB
          Vineet Garg
        4. HIVE-20842.4.patch
          710 kB
          Vineet Garg
        5. HIVE-20842.5.patch
          747 kB
          Vineet Garg
        6. HIVE-20842.6.patch
          746 kB
          Vineet Garg
        7. HIVE-20842.7.patch
          734 kB
          Vineet Garg
        8. HIVE-20842.8.patch
          608 kB
          Vineet Garg
        9. HIVE-20842.9.patch
          556 kB
          Vineet Garg
        10. HIVE-20842.10.patch
          42 kB
          Vineet Garg
        11. HIVE-20842.11.patch
          28 kB
          Vineet Garg
        12. HIVE-20842.12.patch
          28 kB
          Vineet Garg

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              • Assignee:
                vgarg Vineet Garg
                Reporter:
                vgarg Vineet Garg
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                Dates

                • Created:
                  Updated:
                  Resolved: