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https://issues.apache.org/jira/browse/HIVE-14176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15365293#comment-15365293
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Ashutosh Chauhan commented on HIVE-14176:
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+1
> CBO nesting windowing function within each other when merging Project
> operators
> -------------------------------------------------------------------------------
>
> Key: HIVE-14176
> URL: https://issues.apache.org/jira/browse/HIVE-14176
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Affects Versions: 2.1.0, 2.2.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-14176.patch
>
>
> The translation into a physical plan does not support this way of expressing
> windowing functions. Instead, we will not merge the Project operators when we
> find this pattern.
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