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https://issues.apache.org/jira/browse/MAPREDUCE-3749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13196482#comment-13196482
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Hadoop QA commented on MAPREDUCE-3749:
--------------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12512462/MAPREDUCE-3749.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/1711//testReport/
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1711//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-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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