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https://issues.apache.org/jira/browse/HIVE-1538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13064384#comment-13064384
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John Sichi commented on HIVE-1538:
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Since Yongqiang already reviewed this one, I can commit it assuming there were
no new functional changes after his last review.
One question though; I see a bunch of the new SELECT statements in the unit
tests do not have ORDER BY. Are those all guaranteed to return at most one
row? If not, they need to have an ORDER BY on a complete key to guarantee test
determinism.
> FilterOperator is applied twice with ppd on.
> --------------------------------------------
>
> Key: HIVE-1538
> URL: https://issues.apache.org/jira/browse/HIVE-1538
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Amareshwari Sriramadasu
> Assignee: Amareshwari Sriramadasu
> Attachments: patch-1538-1.txt, patch-1538-2.txt, patch-1538-3.txt,
> patch-1538-4.txt, patch-1538.txt
>
>
> With hive.optimize.ppd set to true, FilterOperator is applied twice. And it
> seems second operator is always filtering zero rows.
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