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https://issues.apache.org/jira/browse/SPARK-41413?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chao Sun updated SPARK-41413:
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Summary: SPJ: Avoid shuffle when partition keys mismatch, but join
expressions are compatible (was: SPJ: Spark should avoid shuffle when
partition keys mismatch, but join expressions are compatible)
> SPJ: 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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