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From "Minutello, Nick" <nick.minute...@credit-suisse.com>
Subject RE: Uncaught exception in subscriber ends subscription
Date Tue, 25 May 2010 14:48:28 GMT

Has anyone else seen this issue?
I don't believe I've stumbled across a bug like this... seems a bit too
fundamental ... 
-Nick

> _____________________________________________ 
> From: 	Minutello, Nick  
> Sent:	24 May 2010 20:00
> To:	'users@activemq.apache.org'
> Subject:	RE: Uncaught exception in subscriber ends subscription
> 
> 
> Forgive me if I'm missing something daft - its been a while since I
> read the JMS spec - but I'm pretty sure an uncaught exception isn't
> meant to kill a subscription... 
> 
> Here is the simplest code sample to reproduce the problem.
> 
>  << File: TestMessageSenderer.java >> 
> 
> This is running against AMQ 5.3.0.
> 
> Can someone confirm this is a bug? I'll raise an issue in Jira.
> 
> Cheers, thanks,
> Nick
> 
> 
> 
> _____________________________________________ 
> From: 	Minutello, Nick  
> Sent:	24 May 2010 16:27
> To:	'users@activemq.apache.org'
> Subject:	Uncaught exception in subscriber ends subscription
> 
> 
> Hi chaps/chappettes,
> 
> We are seeing an issue with ActiveMQ Topic subscription when there is
> an uncaught exception.
> 
> It appears to be related to an old report (but who knows) :
> http://mail-archives.apache.org/mod_mbox/activemq-users/200805.mbox/<1
> 7189972.post@talk.nabble.com>
> <http://mail-archives.apache.org/mod_mbox/activemq-users/200805.mbox/%
> 3C17189972.post@talk.nabble.com%3E>  
> 
> Basically, what happens is our Consumer (onMessage) was throwing an
> NPE. After that happens, the consumer no longer receives any more
> messages.
> 
> Following it through in the debugger - when the exception is thrown,
> what we see is the the "ActiveMQ Session Task" thread completes... 
> After that, it never seems to execute again. Seems some state in the
> PooledTaskRunner gets borked? Investigating further - but at first
> glance it appears it thinks the connection is shutting down...
> 
> -Nick

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