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  1. Calcite
  2. CALCITE-2287

StackOverflowError from FlatList equals()

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.17.0
    • Component/s: None
    • Labels:
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      Description

      The equals() method of `Flat3List` and `Flat4List` may invoke each other in an infinite loop.

      See also https://issues.apache.org/jira/browse/HIVE-18427

       

      We found this problem when such lists are used as keys in `RelMetadataQuery.map`; occasionally there are hashcode collisions between `Flat3List` and `Flat4List`, hence their equals() methods will be invoked.

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            • Assignee:
              julianhyde Julian Hyde
              Reporter:
              zhong.j.yu Zhong Yu
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                Updated:
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