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  1. Hive
  2. HIVE-9210

Support split sampling for parallel order by

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Details

    • Improvement
    • Status: Patch Available
    • Minor
    • Resolution: Unresolved
    • None
    • None
    • Query Processor
    • None

    Description

      Random sampling cannot sure it covers whole range of input data. See HIVE-7661

      Attachments

        1. HIVE-9210.1.patch.txt
          36 kB
          Navis Ryu
        2. HIVE-9210.2.patch.txt
          35 kB
          Navis Ryu

        Issue Links

          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. HIVE-7978 Implement SplitSampler for parallel orderby

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. HIVE-7661 Observed performance issues while sorting using Hive's Parallel Order by clause while retaining pre-existing sort order.

          • Major - Major loss of function.
          • Open
          links to

          Web Link review board

          Activity

            People

              navis Navis Ryu
              navis Navis Ryu
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              Dates

                Created:
                Updated: