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https://issues.apache.org/jira/browse/SPARK-546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14060763#comment-14060763
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Aaron commented on SPARK-546:
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I created a PR for a full outer join implementation here:
https://github.com/apache/spark/pull/1395
If there is interest I can also implement multiJoin.
> Support full outer join and multiple join in a single shuffle
> -------------------------------------------------------------
>
> Key: SPARK-546
> URL: https://issues.apache.org/jira/browse/SPARK-546
> Project: Spark
> Issue Type: Improvement
> Reporter: Reynold Xin
>
> RDD[(K,V)] now supports left/right outer join but not full outer join.
> Also it'd be nice to provide a way for users to join multiple RDDs on the
> same key in a single shuffle.
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