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https://issues.apache.org/jira/browse/HDFS-1692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13033880#comment-13033880
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Bharath Mundlapudi commented on HDFS-1692:
------------------------------------------

As i was tracking this hang issue, i have cleaned up some threads which were 
not exiting. So the change to ipc/Server.java. But yes we can move this 
particular code to other Jira. For 0.23, we can do separately. 

> In secure mode, Datanode process doesn't exit when disks fail.
> --------------------------------------------------------------
>
>                 Key: HDFS-1692
>                 URL: https://issues.apache.org/jira/browse/HDFS-1692
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 0.20.204.0
>            Reporter: Bharath Mundlapudi
>            Assignee: Bharath Mundlapudi
>             Fix For: 0.20.204.0
>
>         Attachments: HDFS-1692-1.patch
>
>
> In secure mode, when disks fail more than volumes tolerated, datanode process 
> doesn't exit properly and it just hangs even though shutdown method is 
> called. 

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