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Posted to issues@spark.apache.org by "Cheng Su (Jira)" <ji...@apache.org> on 2021/03/17 21:51:00 UTC

[jira] [Created] (SPARK-34781) Eliminate LEFT SEMI/ANTI join to its left child side with AQE

Cheng Su created SPARK-34781:
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             Summary: Eliminate LEFT SEMI/ANTI join to its left child side with AQE
                 Key: SPARK-34781
                 URL: https://issues.apache.org/jira/browse/SPARK-34781
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.2.0
            Reporter: Cheng Su


In `EliminateJoinToEmptyRelation.scala`, we can extend it to cover more cases for LEFT SEMI and LEFT ANI joins:
 # Join is left semi join, join right side is non-empty and condition is empty. Eliminate join to its left side.
 # Join is left anti join, join right side is empty. Eliminate join to its left side.



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