Xiening Dai created CALCITE-3487:
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Summary: Should not hard code RelMetadataQuery class in
VolcanoPlanner.isValid()
Key: CALCITE-3487
URL: https://issues.apache.org/jira/browse/CALCITE-3487
Project: Calcite
Issue Type: Bug
Reporter: Xiening Dai
With CALCITE-3446, a calcite user can choose to provide a customized provide a
sub-class of RelMetadataQuery through RelOptCluster.setMetadataQuery(). We
cannot assume the base class RelMetadataQuery is always used in planner.
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