Cheng Su created SPARK-34533:
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Summary: Eliminate LEFT ANTI join to empty relation in AQE
Key: SPARK-34533
URL: https://issues.apache.org/jira/browse/SPARK-34533
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.2.0
Reporter: Cheng Su
I discovered from review discussion -
[https://github.com/apache/spark/pull/31630#discussion_r581774000] , that we
can eliminate LEFT ANTI join (with no join condition) to empty relation, if the
right side is known to be non-empty. So with AQE, this is doable similar to
[https://github.com/apache/spark/pull/29484] .
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