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  1. Hive
  2. HIVE-20490

UDAF: Add an 'approx_distinct' to Hive

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 4.0.0
    • Fix Version/s: 4.0.0
    • Component/s: UDF
    • Labels:
      None
    • Tags:
      TODOC

      Description

      This gives a direct pathway to call the equivalent of Hive's default compute_stats() UDAF which computes a HyperLogLog bitVector + approx distinct on a column.

        Attachments

        1. HIVE-20490.1.patch
          35 kB
          Gopal Vijayaraghavan
        2. HIVE-20490.2.patch
          36 kB
          Gopal Vijayaraghavan
        3. HIVE-20490.2.patch
          36 kB
          Gopal Vijayaraghavan

          Issue Links

          supercedes

          New Feature - A new feature of the product, which has yet to be developed. HIVE-7402 add `approx_distinct` & composable nDV UDAFs

          • Major - Major loss of function.
          • Resolved

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              People

              • Assignee:
                gopalv Gopal Vijayaraghavan
                Reporter:
                gopalv Gopal Vijayaraghavan
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                Dates

                • Created:
                  Updated:
                  Resolved: