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https://issues.apache.org/jira/browse/HDFS-415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12728384#action_12728384
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Konstantin Boudnik commented on HDFS-415:
-----------------------------------------

The above mentioned java warnings are unrelated and seems to belong to a 
totally different class. Thus, the Hudson's comment could be disregarded.



> Unchecked exception thrown inside of BlockReceiver cause some threads hang
> --------------------------------------------------------------------------
>
>                 Key: HDFS-415
>                 URL: https://issues.apache.org/jira/browse/HDFS-415
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Konstantin Boudnik
>            Assignee: Konstantin Boudnik
>         Attachments: copy.txt.log, HADOOP-6073.patch, HADOOP-6073.patch, 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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