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https://issues.apache.org/jira/browse/HDFS-12754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16236680#comment-16236680
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Kuhu Shukla commented on HDFS-12754:
------------------------------------

Adding the test as it is causes a hang since the deadlock of the surefire 
process for this test class cannot recover or shutdown without external 
intervention. Thread joins or interrupts do not work therefore. Will update on 
more finds or ways to fix the test but would appreciate any more ideas from 
[~yangjiandan] / [~elgoiri]/ [~kihwal]. Thanks again.

> Lease renewal can hit a deadlock 
> ---------------------------------
>
>                 Key: HDFS-12754
>                 URL: https://issues.apache.org/jira/browse/HDFS-12754
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.8.1
>            Reporter: Kuhu Shukla
>            Assignee: Kuhu Shukla
>            Priority: Major
>         Attachments: HDFS-12754.001.patch
>
>
> The Client and the renewer can hit a deadlock during close operation since 
> closeFile() reaches back to the DFSClient#removeFileBeingWritten. This is 
> possible if the client class close when the renewer is renewing a lease.



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