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From "Michael Chen (JIRA)" <>
Subject [jira] Created: (AMQ-2787) ActiveMQ.Advisory.TempQueue dequeueCount is 0
Date Mon, 21 Jun 2010 15:39:51 GMT
ActiveMQ.Advisory.TempQueue dequeueCount is 0

                 Key: AMQ-2787
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.3.2
         Environment: Java SE 6
            Reporter: Michael Chen
            Priority: Minor

After several clients have connect to ActiveMQ, if you use jconsole to check on the attributes
of topic ActiveMQ.Advisory.TempQueue, it shows that there are 16 consumers (in my case), but
the DequeueCount is always 0. InFlightCount == DispatchCount and is not zero. EnqueueCount
== QueueSize. The InFlightCount continues to grow without bound.

We have a monitor module that checks for InFlightCount not zero, which is how we discovered
this. I understand that for a topic, if there is no consumer, the message is dropped. However,
this shows there are consumers (no our code, probably ActiveMQ or Camel), why they are not

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