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https://issues.apache.org/jira/browse/HIVE-11726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14992607#comment-14992607
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Hari Sankar Sivarama Subramaniyan commented on HIVE-11726:
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ltgm +1
> 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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