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  1. Calcite
  2. CALCITE-995

Sort transpose rules might fall in an infinite loop

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.6.0
    • Fix Version/s: 1.6.0
    • Component/s: core
    • Labels:
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      Description

      CALCITE-987 introduced the RelMdMaxRowCount metadata provider. By default, RelMdMaxRowCount returns Double.MAX, which is causing some infinite loops in the current test suite, as Sort will continue being pushed below Union/Join (if the estimate row count for Union/Join is Double.MAX).

      I propose to return null by default if we cannot get the maximum number of rows, which makes more sense and allows catching this issue.

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            • Assignee:
              jcamachorodriguez Jesus Camacho Rodriguez
              Reporter:
              jcamachorodriguez Jesus Camacho Rodriguez

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                Updated:
                Resolved:

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