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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3862) Race conditions in aggregate calculation
Date Sat, 07 May 2011 00:09:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030211#comment-13030211
] 

Hudson commented on HBASE-3862:
-------------------------------

Integrated in HBase-TRUNK #1909 (See [https://builds.apache.org/hudson/job/HBase-TRUNK/1909/])
    

> Race conditions in aggregate calculation
> ----------------------------------------
>
>                 Key: HBASE-3862
>                 URL: https://issues.apache.org/jira/browse/HBASE-3862
>             Project: HBase
>          Issue Type: Bug
>          Components: coprocessors
>    Affects Versions: 0.92.0
>            Reporter: John Heitmann
>         Attachments: coprocessor_race.patch
>
>
> The AggregationClient requests aggregations from multiple region servers in parallel.
The calculations in the reducer callbacks of the AggregationClient are not thread safe, and
therefore could return an incorrect result due to simultaneous/interleaved execution.

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