Ziqi Liu created SPARK-48465:
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Summary: Avoid no-op empty relation propagation in AQE
Key: SPARK-48465
URL: https://issues.apache.org/jira/browse/SPARK-48465
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 4.0.0
Reporter: Ziqi Liu
We should avoid no-op empty relation propagation in AQE: if we convert an empty
QueryStageExec to empty relation, it will further wrapped into a new query
stage and execute -> produce empty result -> empty relation propagation again.
This issue is currently not exposed because AQE will try to reuse shuffle.
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