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https://issues.apache.org/jira/browse/SPARK-2076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14021630#comment-14021630
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Cheng Hao commented on SPARK-2076:
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PR can be found at https://github.com/apache/spark/pull/1015
> Push Down the Predicate & Join Filter for OuterJoin
> ---------------------------------------------------
>
> Key: SPARK-2076
> URL: https://issues.apache.org/jira/browse/SPARK-2076
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Cheng Hao
> Priority: Minor
>
> The Join Filter and where condition could also be pushed down for outer join,
> and the basic rule is described as
> https://cwiki.apache.org/confluence/display/Hive/OuterJoinBehavior
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