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  1. Hive
  2. HIVE-3401

Diversify grammar for split sampling

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Trivial
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.11.0
    • Component/s: Query Processor
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Current split sampling only supports grammar like TABLESAMPLE(n PERCENT). But some users wants to specify just the size of input. It can be easily calculated with a few commands but it seemed good to support more grammars something like TABLESAMPLE(500M).

        Attachments

        1. HIVE-3401.D4821.2.patch
          37 kB
          Phabricator
        2. HIVE-3401.D4821.3.patch
          83 kB
          Phabricator
        3. HIVE-3401.D4821.4.patch
          83 kB
          Phabricator
        4. HIVE-3401.D4821.5.patch
          43 kB
          Phabricator
        5. HIVE-3401.D4821.6.patch
          50 kB
          Phabricator
        6. HIVE-3401.D4821.7.patch
          56 kB
          Phabricator

          Issue Links

          is related to

          Improvement - An improvement or enhancement to an existing feature or task. HIVE-2780 Implement more restrictive table sampler

          • Trivial - Cosmetic problem like misspelt words or misaligned text.
          • Patch Available

            Activity

              People

              • Assignee:
                navis Navis Ryu
                Reporter:
                navis Navis Ryu
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                Dates

                • Created:
                  Updated:
                  Resolved: