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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-13739) Predicate Push Down Through Window Operator
Date Thu, 10 Mar 2016 18:49:40 GMT

    [ https://issues.apache.org/jira/browse/SPARK-13739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15189719#comment-15189719
] 

Apache Spark commented on SPARK-13739:
--------------------------------------

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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