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From "jiraposter@reviews.apache.org (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2440) make hive mapper initialize faster when having tons of input files
Date Mon, 12 Sep 2011 19:17:11 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13102935#comment-13102935
] 

jiraposter@reviews.apache.org commented on HIVE-2440:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/1813/
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Review request for hive and Ning Zhang.


Summary
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make hive mapper initialize faster when having tons of input files


This addresses bug hive-2440.
    https://issues.apache.org/jira/browse/hive-2440


Diffs
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  trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/MapOperator.java 1167289 

Diff: https://reviews.apache.org/r/1813/diff


Testing
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Thanks,

Yongqiang



> make hive mapper initialize faster when having tons of input files
> ------------------------------------------------------------------
>
>                 Key: HIVE-2440
>                 URL: https://issues.apache.org/jira/browse/HIVE-2440
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: He Yongqiang
>            Assignee: He Yongqiang
>         Attachments: HIVE-2440.1.patch, HIVE-2440.2.patch
>
>
> when one hive job has tons of input files, a lot of mappers may fail because of slow
initialization.

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