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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-1898) locking for the ReflectionUtils.logThreadInfo is too conservative
Date Wed, 24 Oct 2007 23:33:50 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Owen O'Malley updated HADOOP-1898:
----------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

I just committed this. Thanks, Amareshwari!

> 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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