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Posted to dev@hive.apache.org by "Ashutosh Chauhan (JIRA)" <ji...@apache.org> on 2014/07/01 05:46:25 UTC

[jira] [Commented] (HIVE-7304) Transitive Predicate Propagation doesn't happen properly after HIVE-7159

    [ https://issues.apache.org/jira/browse/HIVE-7304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14048471#comment-14048471 ] 

Ashutosh Chauhan commented on HIVE-7304:
----------------------------------------

[~rhbutani] Shall we commit this one and address above concern in a follow-up jira or do you want to take that up in this one only. I am fine either ways.

> Transitive Predicate Propagation doesn't happen properly after HIVE-7159
> ------------------------------------------------------------------------
>
>                 Key: HIVE-7304
>                 URL: https://issues.apache.org/jira/browse/HIVE-7304
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Harish Butani
>            Assignee: Harish Butani
>         Attachments: HIVE-7304.1.patch, HIVE-7304.2.patch
>
>
> The reason for the regression is that PredicateTransitivePropagate looks at the FilterOperator below the ReduceSink. 
> SemanticAnalyzer::genNotNullFilterForJoinSourcePlan was stacking another FilterOp for the not null check, so only that predicate was being applied transitively by PredicateTransitivePropagate.



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