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https://issues.apache.org/jira/browse/SPARK-9862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16020913#comment-16020913
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Sean Owen commented on SPARK-9862:
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[~Daimon] it always has that status if any pull request is open, but no this
does not seem to be in progress.
> Join: Handling data skew
> ------------------------
>
> Key: SPARK-9862
> URL: https://issues.apache.org/jira/browse/SPARK-9862
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Yin Huai
> Attachments: Handling skew data in join.pdf
>
>
> For a two way shuffle join, if one or multiple groups are skewed in one table
> (say left table) but having a relative small number of rows in another table
> (say right table), we can use broadcast join for these skewed groups and use
> shuffle join for other groups.
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