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  1. IMPALA
  2. IMPALA-5727

Join Order Optimization time increases non-linearly with the number of tables

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Frontend
    • Epic Color:
      ghx-label-2

      Description

      The planning time (believed to be in join order optimization) increases non-linearly with increasing number of tables in the join. By increasing the number of tables in the join from 5 to 10, the planning time increases from 200ms to 700+ms.

      For small data query, 700+ms planning time is significant.

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            • Assignee:
              Unassigned
              Reporter:
              alanchoi Alan Choi
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              Dates

              • Created:
                Updated: