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From Joe Fernandez <>
Subject Re: QueueSize and InFlightCount on a Topic keeps growing
Date Mon, 04 Aug 2008 01:52:28 GMT

Re #1, see the following JIRA

I am using AMQ 5.1, with a similar setup and except for the QueueSize issue,
everything seems to run okay for me. It sounds like there is a problem with
how the messages are being acknowledged.  

I'd upgrade to 5.1; a lot of issues were addressed w/5.1. 


Gaurav Hariani wrote:
> I have a non-persistent Topic with a single producer (Java-JMS) and 
> multiple non-durable consumers (written in C# NMS)
> Looking at the Topic in jconsole I notice the following:
>    1. The QueueSize on the Topic is the same as the EnqueueCount  and
>       keeps increasing with each new message.
>    2. The InFlightCount stays around zero for a while, but then starts
>       to increase (the value being the difference between DequeueCount
>       and DispatchCount
>    3. Eventually the consumers stop receiving any new messages.
> Can anyone explain what these various values represent and what might be 
> causing this behaviour?
> I'm using ActiveMQ 5.0
> Thanks
> Gaurav

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