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https://issues.apache.org/jira/browse/HADOOP-6762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HADOOP-6762:
--------------------------------

    Attachment: hadoop-6762.txt

Rebased on trunk. A few changes since the earlier revs:
- added a new "simple" test case with a single thread
- moved the serialization of the call response into the calling thread, outside 
of the lock acquisition, to get better CPU parallelism
- used guava's ThreadFactoryBuilder to make the thread factory
- Cleaned up some of the warning messages to include thread name

> exception while doing RPC I/O closes channel
> --------------------------------------------
>
>                 Key: HADOOP-6762
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6762
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.20.2
>            Reporter: sam rash
>            Assignee: Todd Lipcon
>            Priority: Critical
>             Fix For: 0.22.0, 0.23.0
>
>         Attachments: hadoop-6762-1.txt, hadoop-6762-10.txt, 
> hadoop-6762-2.txt, hadoop-6762-3.txt, hadoop-6762-4.txt, hadoop-6762-6.txt, 
> hadoop-6762-7.txt, hadoop-6762-8.txt, hadoop-6762-9.txt, hadoop-6762.txt
>
>
> If a single process creates two unique fileSystems to the same NN using 
> FileSystem.newInstance(), and one of them issues a close(), the leasechecker 
> thread is interrupted.  This interrupt races with the rpc namenode.renew() 
> and can cause a ClosedByInterruptException.  This closes the underlying 
> channel and the other filesystem, sharing the connection will get errors.

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