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Posted to issues@calcite.apache.org by "Chunhui Shi (JIRA)" <ji...@apache.org> on 2016/12/22 00:48:58 UTC

[jira] [Created] (CALCITE-1550) ConventionTraitDef.plannerConversionMap is not thread safe

Chunhui Shi created CALCITE-1550:
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             Summary: ConventionTraitDef.plannerConversionMap is not thread safe
                 Key: CALCITE-1550
                 URL: https://issues.apache.org/jira/browse/CALCITE-1550
             Project: Calcite
          Issue Type: Bug
            Reporter: Chunhui Shi
            Assignee: Julian Hyde
            Priority: Critical


We are using static instance ConventionTraitDef.INSTANCE globally and plannerConversionMap(class WeakHashMap) defined in ConventionTraitDef class is not threadsafe. And the data in the map could corrupt and cause dead loop or other data error.

  private final WeakHashMap<RelOptPlanner, ConversionData>
  plannerConversionMap =
      new WeakHashMap<RelOptPlanner, ConversionData>();




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