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https://issues.apache.org/jira/browse/YARN-184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13498289#comment-13498289
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Sandy Ryza commented on YARN-184:
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Putting the QueueManager assignment in reinitialize would either require a
findbugs exclude or synchronizing all accesses to it, which seems unnecessary
because its value never changes after creation.
I'll update the comment. [~tucu00] is there anything else you'd like me to
change?
> Remove unnecessary locking in fair scheduler, and address findbugs excludes.
> ----------------------------------------------------------------------------
>
> Key: YARN-184
> URL: https://issues.apache.org/jira/browse/YARN-184
> Project: Hadoop YARN
> Issue Type: Improvement
> Affects Versions: 2.0.2-alpha
> Reporter: Sandy Ryza
> Assignee: Sandy Ryza
> Attachments: YARN-184-1.patch, YARN-184-2.patch, YARN-184.patch
>
>
> In YARN-12, locks were added to all fields of QueueManager to address
> findbugs. In addition, findbugs exclusions were added in response to
> MAPREDUCE-4439, without a deep look at the code.
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