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Posted to dev@calcite.apache.org by "Ruben Q L (Jira)" <ji...@apache.org> on 2019/12/12 10:57:00 UTC

[jira] [Created] (CALCITE-3598) ClassCastException in MaterializationTest testJoinMaterialization8 and testJoinMaterialization9

Ruben Q L created CALCITE-3598:
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             Summary: ClassCastException in MaterializationTest testJoinMaterialization8 and testJoinMaterialization9
                 Key: CALCITE-3598
                 URL: https://issues.apache.org/jira/browse/CALCITE-3598
             Project: Calcite
          Issue Type: Bug
    Affects Versions: 1.21.0
            Reporter: Ruben Q L


Problem unveil by CALCITE-3535, and also separately by CALCITE-3576.
When CALCITE-3535 was committed, it made MaterializationTest#testJoinMaterialization8 and MaterializationTest#testJoinMaterialization9 change their execution plan from hashJoin to nestedLoopJoin. This caused an exception
{code}
java.lang.ClassCastException: java.lang.String$CaseInsensitiveComparator cannot be cast to java.lang.String
{code}
which seems unrelated to CALCITE-3535 (or CALCITE-3576), so the tests were temporarily disabled.
The goal of this ticket is to investigate the root cause of this issue and re-activate both tests.



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