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https://issues.apache.org/jira/browse/HADOOP-6073?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720923#action_12720923
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Raghu Angadi commented on HADOOP-6073:
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BlockReceiver.receiveBlock() does not clean up properly in case of runtime
exception. It should interrupt the responder inside finally clause rather than
just when IOException is caught. DN functions normally for other IO requests.
> Unchecked exception thrown inside of BlockReceiver cause some threads hang
> --------------------------------------------------------------------------
>
> Key: HADOOP-6073
> URL: https://issues.apache.org/jira/browse/HADOOP-6073
> Project: Hadoop Core
> Issue Type: Bug
> Reporter: Konstantin Boudnik
> Attachments: copy.txt.log, x2
>
>
> One is able to inject all sorts of faults into Hadoop's classes using new
> fault injection framework (HADOOP-6003).
> I've been injecting unchecked exception (RuntimeException) into
> BlockReceiver.receivePacket() method before any
> of write() operations (e.g. line 401, 449, 463, 529) and running some of
> the existing HDFS tests. The injection of unchecked exceptions causes
> DataXceiver to die silently and without any traces.
> From a debugger run it seems like some threads are being left alive or not
> notified about the exception.
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