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https://issues.apache.org/jira/browse/HADOOP-1898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amareshwari Sri Ramadasu updated HADOOP-1898:
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    Status: Open  (was: Patch Available)

> 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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