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https://issues.apache.org/jira/browse/MAPREDUCE-3851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13445548#comment-13445548
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Todd Lipcon commented on MAPREDUCE-3851:
----------------------------------------

[~tgraves], I finally figured out the bug that causes the acceptors to 
occasionally not start. It's JETTY-1316. I pushed a patched jetty here: 
https://github.com/toddlipcon/jetty-hadoop-fix/

and we'll try to deploy it to our maven repository as 6.1.26.cloudera.2 soon.

Hope this helps!
                
> Allow more aggressive action on detection of the jetty issue
> ------------------------------------------------------------
>
>                 Key: MAPREDUCE-3851
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3851
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: tasktracker
>    Affects Versions: 1.0.0
>            Reporter: Kihwal Lee
>            Assignee: Thomas Graves
>             Fix For: 1.0.2
>
>         Attachments: MAPREDUCE-3851.patch, MAPREDUCE-3851.patch, 
> MAPREDUCE-3851.patch, MAPREDUCE-3851.patch
>
>
> MAPREDUCE-2529 added the useful failure detection mechanism. In this jira, I 
> propose we add a periodic check inside TT and configurable action to 
> self-destruct. Blacklisting helps but is not enough. Hung jetty still accepts 
> connection and it takes very long time for clients to fail out. Short jobs 
> are delayed for hours because of this. This feature will be a nice companion 
> to MAPREDUCE-3184.

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