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https://issues.apache.org/jira/browse/HADOOP-4552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12647158#action_12647158
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Hudson commented on HADOOP-4552:
--------------------------------
Integrated in Hadoop-trunk #659 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/659/])
. Fix a deadlock in RPC server. (Raghu Angadi)
> Deadlock in RPC Server
> ----------------------
>
> Key: HADOOP-4552
> URL: https://issues.apache.org/jira/browse/HADOOP-4552
> Project: Hadoop Core
> Issue Type: Bug
> Components: ipc
> Affects Versions: 0.16.3
> Reporter: Raghu Angadi
> Assignee: Raghu Angadi
> Fix For: 0.19.0
>
> Attachments: deadlock-example.txt, HADOOP-4552.patch
>
>
> RPC server could get into a deadlock especially when clients or server are
> network starved. This is a deadlock between RPC responder thread trying to
> check if there are any connection to be purged and RPC handler trying to
> queue a response to be written by the responder.
> This was first observed [this
> thread|http://www.nabble.com/TaskTrackers-disengaging-from-JobTracker-to20234317.html].
>
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