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https://issues.apache.org/jira/browse/SPARK-41413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17644088#comment-17644088
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Apache Spark commented on SPARK-41413:
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User 'sunchao' has created a pull request for this issue:
https://github.com/apache/spark/pull/38950
> Storage-Partitioned Join should avoid shuffle when partition keys mismatch,
> but join expressions are compatible
> ---------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-41413
> URL: https://issues.apache.org/jira/browse/SPARK-41413
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.3.1
> Reporter: Chao Sun
> Priority: Major
>
> Currently when checking whether two sides of a Storage Partitioned Join are
> compatible, we requires both the partition expressions as well as the
> partition keys are compatible. However, this condition could be relaxed so
> that we only require the former. In the case that the latter is not
> compatible, we can calculate a common superset of keys and push down the
> information to both sides of the join, and use empty partitions for the
> missing keys.
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