Haisheng Yuan created CALCITE-4122:
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Summary: Support on-demand rule matching
Key: CALCITE-4122
URL: https://issues.apache.org/jira/browse/CALCITE-4122
Project: Calcite
Issue Type: Improvement
Components: core
Reporter: Haisheng Yuan
Currently in top-down planner, rule is matched whenever a new relnode is added
to memo, no matter the group is pruned or not. We should do the rule matching
for each operator only when needed, hence rule queue is not required anymore.
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