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From Joe Fernandez <joe.fernan...@ttmsolutions.com>
Subject Re: CLIENT_ACKNOWLEDGE mode for a session misunderstanding?
Date Thu, 30 Oct 2008 23:05:15 GMT

I think this is because when you set prefetch to 0, your consumer must use
the receive method to 'pull' messages from the broker; the broker will not
'push' messages to the consumer. 

Joe
http://www.ttmsolutions.com - get a free ActiveMQ user guide 


Eugeny N Dzhurinsky-2 wrote:
> 
> On Wed, Oct 29, 2008 at 05:06:33PM +0000, Rob Davies wrote:
>> Hi Eugeny,
>> 
>> As James stated earlier - you need to set the prefetch - but the value  
>> should be 0 - this will make ActiveMQ 'pull' rather than 'push'
> 
> This doesn't work:
> 
> javax.jms.JMSException: Illegal prefetch size of zero. This setting is not
> supported for asynchronous consumers please set a value of at least 1
>         at
>        
> org.apache.activemq.ActiveMQMessageConsumer.setMessageListener(ActiveMQMessageConsumer.java:358)
> 
> if I set URL to this value:
> 
>      private static final String CONNECTION_URL =
> "vm://localhost?broker.persistent=false&jms.prefetchPolicy.all=0";
> 
> -- 
> Eugene N Dzhurinsky
> 
>  
> 

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