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https://issues.apache.org/jira/browse/SPARK-2826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14084429#comment-14084429
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Apache Spark commented on SPARK-2826:
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User 'chenghao-intel' has created a pull request for this issue:
https://github.com/apache/spark/pull/1765
> Reduce the Memory Copy for HashOuterJoin
> ----------------------------------------
>
> Key: SPARK-2826
> URL: https://issues.apache.org/jira/browse/SPARK-2826
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Cheng Hao
> Assignee: Cheng Hao
> Priority: Minor
>
> This is actually a follow up for
> https://issues.apache.org/jira/browse/SPARK-2212 , the previous
> implementation has potential memory copy.
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