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  1. Calcite
  2. CALCITE-760

Aggregate recommender blows up if row count estimate is too high

    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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      Description

      If you run the aggregate recommendation algorithm with a value of rowCountEstimate that is wrong and large, the algorithm runs for a long time and eventually fails with "OutOfMemoryError: GC overhead limit exceeded".

      I have added LatticeTest.testLatticeWithBadRowCountEstimate as a test case.

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            • Assignee:
              julianhyde Julian Hyde
              Reporter:
              julianhyde Julian Hyde
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              • Created:
                Updated: