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  1. Hive
  2. HIVE-4160 Vectorized Query Execution in Hive
  3. HIVE-6222

Make Vector Group By operator abandon grouping if too many distinct keys

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    • Hadoop Flags:
      Reviewed

      Description

      Row mode GBY is becoming a pass-through if not enough aggregation occurs on the map side, relying on the shuffle+reduce side to do the work. Have VGBY do the same.

        Attachments

        1. HIVE-6222.1.patch
          50 kB
          Remus Rusanu
        2. HIVE-6222.2.patch
          50 kB
          Remus Rusanu
        3. HIVE-6222.3.patch
          51 kB
          Remus Rusanu
        4. HIVE-6222.4.patch
          52 kB
          Remus Rusanu
        5. HIVE-6222.5.patch
          52 kB
          Remus Rusanu

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            • Assignee:
              rusanu Remus Rusanu
              Reporter:
              rusanu Remus Rusanu
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              • Created:
                Updated:
                Resolved: