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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-11726) Pushed IN predicates to the metastore
Date Wed, 04 Nov 2015 08:38:27 GMT

    [ https://issues.apache.org/jira/browse/HIVE-11726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14989122#comment-14989122
] 

Jesus Camacho Rodriguez commented on HIVE-11726:
------------------------------------------------

QA test fails are unrelated.

> Pushed IN predicates to the metastore
> -------------------------------------
>
>                 Key: HIVE-11726
>                 URL: https://issues.apache.org/jira/browse/HIVE-11726
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-11726.01.patch, HIVE-11726.patch
>
>
> The PointLookupOptimizer can turn off some of the optimizations due to its use of tuple
IN() clauses.
> HIVE-11573 introduced the extraction of sub-clauses that could be pushed down till the
TableScan operators, though they wouldn't be pushed down to the metastore.
> In this issue, we tackle this problem by extending the filter parser of the metastore
to support IN clauses, including multiple columns. This allows to push those additional predicates
down throw directSQL to the metastore.



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