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https://issues.apache.org/jira/browse/HDFS-1478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12925187#action_12925187
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Joydeep Sen Sarma commented on HDFS-1478:
-----------------------------------------

we should also check shutdown conditions under almost all interruptedException 
handlers before terminating. Please see comments at:

https://issues.apache.org/jira/browse/MAPREDUCE-2157?focusedCommentId=12925186&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12925186

> unsafe interrupted condition check in DFSClient lease renewal thread
> --------------------------------------------------------------------
>
>                 Key: HDFS-1478
>                 URL: https://issues.apache.org/jira/browse/HDFS-1478
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Joydeep Sen Sarma
>            Assignee: dhruba borthakur
>
> the lease renewal thread bails out if thread interrupted condition is set:
>     while (clientRunning && !Thread.interrupted()) {
> this seems incorrect. we have seen cases (MAPREDUCE-2157) where (apparently) 
> log4j may be setting the interrupted condition. if that is the case - the 
> lease renewal thread will terminate - and i think we have heard of cases 
> where lease renewal is not happening. so these seem to fit.

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