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From "Shannon Ladymon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-1538) FilterOperator is applied twice with ppd on.
Date Tue, 26 Jan 2016 00:46:39 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15116394#comment-15116394
] 

Shannon Ladymon commented on HIVE-1538:
---------------------------------------

[~ashutoshc], can you confirm what description should be used for *hive.ppd.remove.duplicatefilters*
in the wiki? In HiveConf.java, the description is: "Whether to push predicates down into storage
handlers.  Ignored when hive.optimize.ppd is false" which seems to be an incorrect description
for this property.

Would something like "When hive.optimize.ppd is true, removes duplicate filters from the query
plan.  Set this to false if it filters too aggressively." be more accurate?


> 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
>             Fix For: 0.8.0
>
>         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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