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From "Konstantin Boudnik (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6073) Unchecked exception thrown inside of BlockReceiver cause some threads hang
Date Wed, 17 Jun 2009 23:20:07 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6073?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Konstantin Boudnik updated HADOOP-6073:
---------------------------------------

    Attachment: HADOOP-6073.patch

> 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, 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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