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  1. Calcite
  2. CALCITE-987

Push limit 0 will result in an infinite loop

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 1.5.0
    • 1.6.0
    • core
    • None

    Description

      We use "checkInputForCollationAndLimit" in RelMdUtil.java to check the input #rows. However, it calls RelMetadataQuery.getRowCount which will validate the #rows. The validation will change #row=0 to #row=1. This will result in an infinite loop to push limit. The affected rules include
      SortUnionTransposeRule and any Sort***TransposeRules that call checkInputForCollationAndLimit.

      Attachments

        1. CALCITE-987.01.patch
          5 kB
          Pengcheng Xiong
        2. CALCITE-987.02.patch
          4 kB
          Pengcheng Xiong
        3. CALCITE-987.03.patch
          11 kB
          Pengcheng Xiong
        4. CALCITE-987.04.patch
          11 kB
          Pengcheng Xiong

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            pxiong Pengcheng Xiong
            pxiong Pengcheng Xiong
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              Updated:
              Resolved:

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