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https://issues.apache.org/jira/browse/HADOOP-6762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876546#action_12876546
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sam rash commented on HADOOP-6762:
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-8 is the latest.  i ran it 100 times and did not get any failures.  do you 
still see a failure with rev 8?  if so, I can do some more work with latches to 
tighten it up (right now I have a simple sleep that should allow the threads to 
get warmed up, and a latch to let them gracefully exit)


> 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: sam rash
>         Attachments: hadoop-6762-1.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
>
>
> 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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