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https://issues.apache.org/jira/browse/HADOOP-1898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12537680
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Hudson commented on HADOOP-1898:
--------------------------------
Integrated in Hadoop-Nightly #282 (See
[http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/282/])
> locking for the ReflectionUtils.logThreadInfo is too conservative
> -----------------------------------------------------------------
>
> Key: HADOOP-1898
> URL: https://issues.apache.org/jira/browse/HADOOP-1898
> Project: Hadoop
> Issue Type: Bug
> Components: util
> Affects Versions: 0.15.0
> Reporter: Owen O'Malley
> Assignee: Amareshwari Sri Ramadasu
> Fix For: 0.16.0
>
> Attachments: patch-1898.txt, patch-1898.txt, patch-1898.txt,
> patch-1898.txt
>
>
> When the RPC servers get into trouble with their call queues backing up, they
> occasionally dump the call stacks. These are very useful for identifying hot
> spots, but the locking is too conservative and so all of the handlers are
> blocked while the thread call stacks are dumped.
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