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  1. Hive
  2. HIVE-12763

Use bit vector to track NDV

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 1.2.0, 1.2.1
    • 2.1.0
    • None
    • None

    Description

      This will improve merging of per partitions stats. It will also help merge NDV for auto-gather column stats.

      Attachments

        1. performanceOfMergingNDV.png
          62 kB
          Pengcheng Xiong
        2. aggrStatsPerformance.png
          83 kB
          Pengcheng Xiong
        3. HIVE-12763.05.patch
          277 kB
          Pengcheng Xiong
        4. HIVE-12763.04.patch
          301 kB
          Pengcheng Xiong
        5. HIVE-12763.03.patch
          287 kB
          Pengcheng Xiong
        6. HIVE-12763.02.patch
          235 kB
          Pengcheng Xiong
        7. HIVE-12763.01.patch
          7.47 MB
          Pengcheng Xiong

        Issue Links

          is related to

          New Feature - A new feature of the product, which has yet to be developed. HIVE-11160 Auto-gather column stats

          • Major - Major loss of function.
          • Patch Available
          links to

          Web Link RB

          Activity

            People

              pxiong Pengcheng Xiong
              pxiong Pengcheng Xiong
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              Dates

                Created:
                Updated:
                Resolved: