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https://issues.apache.org/jira/browse/HDFS-7005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14125662#comment-14125662
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stack commented on HDFS-7005:
-----------------------------

+1

> DFS input streams do not timeout
> --------------------------------
>
>                 Key: HDFS-7005
>                 URL: https://issues.apache.org/jira/browse/HDFS-7005
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>    Affects Versions: 3.0.0, 2.5.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>         Attachments: HDFS-7005.patch
>
>
> Input streams lost their timeout.  The problem appears to be 
> {{DFSClient#newConnectedPeer}} does not set the read timeout.  During a 
> temporary network interruption the server will close the socket, unbeknownst 
> to the client host, which blocks on a read forever.
> The results are dire.  Services such as the RM, JHS, NMs, oozie servers, etc 
> all need to be restarted to recover - unless you want to wait many hours for 
> the tcp stack keepalive to detect the broken socket.



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