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  1. Hive
  2. HIVE-15489

Alternatively use table scan stats for HoS

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.2.0
    • Fix Version/s: 2.3.0
    • Component/s: Spark, Statistics
    • Labels:
      None

      Description

      For MapJoin in HoS, we should provide an option to only use stats in the TS rather than the populated stats in each of the join branch. This could be pretty conservative but more reliable.

        Attachments

        1. HIVE-15489.wip.patch
          9 kB
          Chao Sun
        2. HIVE-15489.1.patch
          9 kB
          Chao Sun
        3. HIVE-15489.2.patch
          9 kB
          Chao Sun
        4. HIVE-15489.3.patch
          9 kB
          Chao Sun
        5. HIVE-15489.6.patch
          10 kB
          Chao Sun
        6. HIVE-15489.7.patch
          24 kB
          Chao Sun

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              • Assignee:
                csun Chao Sun
                Reporter:
                csun Chao Sun
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                Dates

                • Created:
                  Updated:
                  Resolved: