[jira] [Created] (SPARK-33832) Add an option in AQE to mitigate skew even if it causes an new shuffle

["Eugene Koifman (Jira)" <ji...@apache.org>]

Eugene Koifman created SPARK-33832:
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             Summary: Add an option in AQE to mitigate skew even if it causes an new shuffle
                 Key: SPARK-33832
                 URL: https://issues.apache.org/jira/browse/SPARK-33832
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Eugene Koifman


Currently {{OptimizeSkewJoin}} will not apply if skew mitigation causes a new shuffle.
There are situations where it's better to mitigate skew even if it means a new shuffle is added, for example if the join outputs small amount of data.

As a first step I propose adding a SQLConf option to enable this.  

I'll open a PR shortly to get feedback on the approach.



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