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  1. Calcite
  2. CALCITE-624

IllegalArgumentException: duplicate key in ReflectiveRelMetadataProvider

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Cannot Reproduce
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None

      Description

      We have our own implementation of RelMDParallelism provider in Hive: HiveRelMDParallelism. It has two methods for the HiveJoin class: isPhaseTransition and splitCount. We hit the problem shown in the stacktrace, that we have not been able to reproduce again.

      java.lang.IllegalArgumentException: duplicate key: class org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveJoin
              at com.google.common.base.Preconditions.checkArgument(Preconditions.java:119)
              at com.google.common.collect.RegularImmutableMap.<init>(RegularImmutableMap.java:67)
              at com.google.common.collect.ImmutableMap.copyOf(ImmutableMap.java:303)
              at org.apache.calcite.rel.metadata.ReflectiveRelMetadataProvider.reflectiveSource(ReflectiveRelMetadataProvider.java:204)
              at org.apache.calcite.rel.metadata.ReflectiveRelMetadataProvider.reflectiveSource(ReflectiveRelMetadataProvider.java:112)
              at org.apache.hadoop.hive.ql.optimizer.calcite.stats.HiveRelMdParallelism.getMetadataProvider(HiveRelMdParallelism.java:44)
              at org.apache.hadoop.hive.ql.optimizer.calcite.HiveDefaultRelMetadataProvider.getMetadataProvider(HiveDefaultRelMetadataProvider.java:52)
              at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.apply(CalcitePlanner.java:760)
              at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.apply(CalcitePlanner.java:713)
              at org.apache.calcite.tools.Frameworks$1.apply(Frameworks.java:109)
              at org.apache.calcite.prepare.CalcitePrepareImpl.perform(CalcitePrepareImpl.java:730)
              at org.apache.calcite.tools.Frameworks.withPrepare(Frameworks.java:145)
              at org.apache.calcite.tools.Frameworks.withPlanner(Frameworks.java:105)
              at org.apache.hadoop.hive.ql.parse.CalcitePlanner.getOptimizedAST(CalcitePlanner.java:580)
      ...
      

      We realized that the same class was ending up twice in a Set when the methods are added for reflection calls.

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              • Assignee:
                Unassigned
                Reporter:
                jcamachorodriguez Jesus Camacho Rodriguez
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                • Created:
                  Updated:
                  Resolved: