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https://issues.apache.org/jira/browse/MAPREDUCE-4844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14394765#comment-14394765
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Brahma Reddy Battula commented on MAPREDUCE-4844:
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Thanks a lot @gera shegalov for review and commit!!!
> Counters / AbstractCounters have constant references not declared final
> -----------------------------------------------------------------------
>
> Key: MAPREDUCE-4844
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4844
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.6.0
> Reporter: Gera Shegalov
> Assignee: Brahma Reddy Battula
> Fix For: 2.8.0
>
> Attachments: MAPREDUCE-4844-002.patch, MAPREDUCE-4844-002.patch,
> MAPREDUCE-4844-branch-1.patch
>
>
> Counters have a number of immutable fields that have not been declared
> 'final'.
> For example, the field groups is not final. It is, however, accessed in a
> couple of methods that are declared 'synchronized'. While there is a
> happens-before relationship between these methods calls, there is none
> between the Counters object initialization and these synchronized methods.
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