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https://issues.apache.org/jira/browse/SPARK-38406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17500749#comment-17500749
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Apache Spark commented on SPARK-38406:
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User 'ulysses-you' has created a pull request for this issue:
https://github.com/apache/spark/pull/35722
> Improve perfermance of ShufflePartitionsUtil createSkewPartitionSpecs
> ---------------------------------------------------------------------
>
> Key: SPARK-38406
> URL: https://issues.apache.org/jira/browse/SPARK-38406
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: XiDuo You
> Priority: Major
>
> If shuffle is skewed with tens of thousands of map partitions and reduce
> partitions in AQE, the method
> `ShufflePartitionsUtil#createSkewPartitionSpecs` will be very slow. More
> unfortunately, it is running at driver side.
>
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