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https://issues.apache.org/jira/browse/HADOOP-6762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876433#action_12876433
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sam rash commented on HADOOP-6762:
----------------------------------
turns out this is just a really bad case of logging. the exception was a
BrokenBarrierException and I wasn't logging the real exception. changed that
and fixed the test so this doesn't occur
> 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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