Haisheng Yuan created CALCITE-4002:
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Summary: Add security check to make sure TransformationRule
doesn't generate PhysicalNode
Key: CALCITE-4002
URL: https://issues.apache.org/jira/browse/CALCITE-4002
Project: Calcite
Issue Type: Improvement
Components: core
Reporter: Haisheng Yuan
Right now, it is not allowed to generate {{PhysicalNode}} in logical
{{TransformationRule}}, but it is just a contract, not being enforced. Add a
security check to make sure we throw if a {{PhysicalNode}} is generated in
{{VolcanoPlanner}}.
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