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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-4552) Deadlock in RPC Server
Date Mon, 03 Nov 2008 19:20:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-4552?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Raghu Angadi updated HADOOP-4552:
---------------------------------

    Fix Version/s: 0.20.0
                   0.19.1

Thanks Aaaron. I propose this for 0.19.1 and 0.20.0. Not a blocker for most users.

> 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: 0.19.1, 0.20.0
>
>         Attachments: 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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