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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3749) ConcurrentModificationException in counter groups
Date Tue, 31 Jan 2012 00:15:10 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13196567#comment-13196567
] 

Hadoop QA commented on MAPREDUCE-3749:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12512490/MAPREDUCE-3749-concurrent.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    -1 javac.  The applied patch generated 3715 javac compiler warnings (more than the trunk's
current 3713 warnings).

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed unit tests in .

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1714//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1714//console

This message is automatically generated.
                
> ConcurrentModificationException in counter groups
> -------------------------------------------------
>
>                 Key: MAPREDUCE-3749
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3749
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.0
>            Reporter: Tom White
>            Assignee: Tom White
>            Priority: Blocker
>         Attachments: MAPREDUCE-3749-concurrent.patch, MAPREDUCE-3749-test.patch, MAPREDUCE-3749.patch,
MAPREDUCE-3749.patch
>
>
> Iterating over a counter's groups while adding more groups will cause a ConcurrentModificationException.
> This was found while running Hive unit tests against a recent 0.23 version.

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