[jira] [Commented] (HIVE-2299) Optimize Hive query startup time for multiple partitions

["jiraposter@reviews.apache.org (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-2299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13070768#comment-13070768 ] 

jiraposter@reviews.apache.org commented on HIVE-2299:
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https://reviews.apache.org/r/1188/
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Review request for hive.


Summary
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Review request for HIVE-2299.


This addresses bug HIVE-2299.
    https://issues.apache.org/jira/browse/HIVE-2299


Diffs
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  ql/src/java/org/apache/hadoop/hive/ql/io/CombineHiveInputFormat.java 421140f 

Diff: https://reviews.apache.org/r/1188/diff


Testing
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Thanks,

Carl



> Optimize Hive query startup time for multiple partitions
> --------------------------------------------------------
>
>                 Key: HIVE-2299
>                 URL: https://issues.apache.org/jira/browse/HIVE-2299
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Vaibhav Aggarwal
>            Assignee: Vaibhav Aggarwal
>         Attachments: HIVE-2299.patch
>
>
> Added an optimization to the way input splits are computed.
> Reduced an O(n^2) operation to O n operation.

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