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https://issues.apache.org/jira/browse/SPARK-13739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15189719#comment-15189719
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Apache Spark commented on SPARK-13739:
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User 'gatorsmile' has created a pull request for this issue:
https://github.com/apache/spark/pull/11635
> Predicate Push Down Through Window Operator
> -------------------------------------------
>
> Key: SPARK-13739
> URL: https://issues.apache.org/jira/browse/SPARK-13739
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Xiao Li
>
> Push down the predicate through the Window operator.
> In this JIRA, predicates are pushed through Window if and only if the
> following conditions are satisfied:
> - Predicate involves one and only one column that is part of window
> partitioning key
> - Window partitioning key is just a sequence of attributeReferences. (i.e.,
> none of them is an expression)
> - Predicate must be deterministic
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