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Posted to issues@spark.apache.org by "Takuya Ueshin (JIRA)" <ji...@apache.org> on 2014/05/23 12:46:02 UTC

[jira] [Commented] (SPARK-1914) Simplify CountFunction not to traverse to evaluate all child expressions.

    [ https://issues.apache.org/jira/browse/SPARK-1914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14007033#comment-14007033 ] 

Takuya Ueshin commented on SPARK-1914:
--------------------------------------

Pull-requested: https://github.com/apache/spark/pull/861

> Simplify CountFunction not to traverse to evaluate all child expressions.
> -------------------------------------------------------------------------
>
>                 Key: SPARK-1914
>                 URL: https://issues.apache.org/jira/browse/SPARK-1914
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Takuya Ueshin
>
> {{CountFunction}} should count up only if the child's evaluated value is not null.
> Because it traverses to evaluate all child expressions, even if the child is null, it counts up if one of the all children is not null.



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