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https://issues.apache.org/jira/browse/SPARK-41511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17646600#comment-17646600
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Apache Spark commented on SPARK-41511:
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User 'ulysses-you' has created a pull request for this issue:
https://github.com/apache/spark/pull/39051
> LongToUnsafeRowMap support ignoresDuplicatedKey
> -----------------------------------------------
>
> Key: SPARK-41511
> URL: https://issues.apache.org/jira/browse/SPARK-41511
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: XiDuo You
> Priority: Major
>
> For left semi and left anti hash join, the duplicated keys of build side have
> no meaning.
> Previous, we supported ingore duplicated keys for UnsafeHashedRelation. We
> can also optimize LongHashedRelation.
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