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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: