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From DominicTulley <>
Subject Re: CMS does not correctly support prefetchSize=0
Date Mon, 28 Jan 2008 16:35:28 GMT

Thanks for the prompt reply Tim.  I didn't want to raise a Jira until it
seemed likely that it was a defect rather than a mistake I was making.

I've now raised Jira
AMQCPP-161  to cover this.

I don't have a test case at this point (the code encountering it is too big
to use) but I'll see what I can do about this.


Timothy Bish wrote:
> Its possible we don't support it correctly, I don't know as we've ever
> really tested that.  
> I'd suggest you write a Jira Issue describing what you are seeing as
> well as some sample code that reproduces the problem so that when one of
> us has time we can look into it.
> Regards
> Tim.
> On Mon, 2008-01-28 at 08:15 -0800, DominicTulley wrote:
>> AMQ-850 introduced the ability to set the message prefetch size to 0. 
>> This
>> appears to all work correctly with a java client (using a synchronous
>> consumer) but using the C++ client libraries, it does not work.
>> Instead, what we see is that messages are never consumed from the queue
>> and
>> the client sits idle.
>> We are using AUTO_ACK mode (which worked in the java client) and a non
>> transactional queue.
>> Is this broken, or am I missing some subtlety that is required?  
>> >From the discussion in AMQ-850 it appears quite an intricate issue...
>> Thanks,
>> -Dominic

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