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https://issues.apache.org/jira/browse/SPARK-32286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17156409#comment-17156409
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Apache Spark commented on SPARK-32286:
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User 'c21' has created a pull request for this issue:
https://github.com/apache/spark/pull/29079
> Coalesce bucketed tables for shuffled hash join if applicable
> -------------------------------------------------------------
>
> Key: SPARK-32286
> URL: https://issues.apache.org/jira/browse/SPARK-32286
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Cheng Su
> Priority: Trivial
>
> Based on a follow up comment in PR
> [#28123|https://github.com/apache/spark/pull/28123], where we can coalesce
> buckets for shuffled hash join as well. The note here is we only coalesce the
> buckets from shuffled hash join stream side (i.e. the side not building hash
> map), so we don't need to worry about OOM when coalescing multiple buckets in
> one task for building hash map.
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