Tanel Kiis created SPARK-34014:
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Summary: Ignore Distinct if it is the right child of a left semi
or anti join
Key: SPARK-34014
URL: https://issues.apache.org/jira/browse/SPARK-34014
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.2.0
Reporter: Tanel Kiis
Left semi and anti joins ignore duplicates in the right child. Finding distinct
values there will only add overhead.
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