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From jerdavis <jerda...@speakeasy.net>
Subject Re: Total Message Order of Queues (not topics) durring edge cases(crashes)
Date Thu, 06 Aug 2009 22:37:51 GMT

Thanks for your answer Rob, this is exactly what I was looking for. :)
Total Ordering seems like such a fundamental thing for a Persistent Queue.
I'm surprised there hasn't been a solid answer to this question. Is there a
standard way people get around this?
Would an Exclusive Consumer guarantee Total Order? 
I would think that a new Exclusive consumer wouldn't be able to consume
messages until the crashed TCP connection/consumer finally closed and
released the outstanding messages.

Regards,
-JD






rajdavies wrote:
> 
> 
> On 5 Aug 2009, at 23:13, jerdavis wrote:
> 
>>
>> No takers?
>> --  
>> View this message in context:
>> http://www.nabble.com/Total-Message-Order-of-Queues-%28not-topics%29-durring-edge-cases%28crashes%29-tp24705154p24837185.html
>> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>>
> 
> 
> Total ordering may be violated for consumer crashes with the default  
> prefetch sizes - see
> http://activemq.apache.org/what-is-the-prefetch-limit-for.html
>   to reduce this possibility to a single message - set a prefetch size  
> = 0.
> 
> cheers,
> 
> Rob
> 
> Rob Davies
> I work here: http://fusesource.com
> My Blog: http://rajdavies.blogspot.com/
> I'm writing this: http://www.manning.com/snyder/
> 
> 
> 
> 
> 
> 

-- 
View this message in context: http://www.nabble.com/Total-Message-Order-of-Queues-%28not-topics%29-durring-edge-cases%28crashes%29-tp24705154p24855824.html
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