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https://issues.apache.org/jira/browse/SPARK-30524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-30524.
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Fix Version/s: 3.0.0
Resolution: Fixed
Issue resolved by pull request 27226
[https://github.com/apache/spark/pull/27226]
> Disable OptimizeSkewJoin rule if introducing additional shuffle.
> ----------------------------------------------------------------
>
> Key: SPARK-30524
> URL: https://issues.apache.org/jira/browse/SPARK-30524
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Ke Jia
> Assignee: Ke Jia
> Priority: Major
> Fix For: 3.0.0
>
>
> The OptimizeSkewedJoin will break the outputPartitioning of origin SMJ. And
> it may introduce additional shuffle after apply the OptimizeSkewedJoin. This
> PR will disable "OptimizeSkewedJoin" rule if introducing additional shuffle.
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