Gary, That doesn't seem to be the case here - namely, the JConsole queue count is accurately reflecting what the ActiveMQ web console is showing. I have rechecked our application code as well as the ActiveMQ server settings and in both cases we are using the default *dispatchAsync* value of false which, according to your blog post from Jan 2010, should take care of the "inflight" counts issue.
It seems to be more a case where the queue "counters" seem to get "thrown off" and never get back in-sync until the broker is restarted. For example, I can see a number "-10" in the "Pending Messages" on the ActiveMQ web admin console (and in JConsole), but clicking on the queue name and showing the actual contents of the queue might reveal 0 items or 5 items, etc. (Note: in the above scenario, the producers were not putting any new items onto the queue, so the # of "Pending Messages" wasn't changing). On Thu, Sep 9, 2010 at 5:44 AM, Gary Tully <gary.tu...@gmail.com> wrote: > Is it by any chance the inflight count in jconsole that is negative? > There is a good explanation for that, > http://blog.garytully.com/2010/01/activemq-prefetch-and-asyncdispatch.html > > On 8 September 2010 21:42, Colleen Velo <cmv...@gmail.com> wrote: > > Gary, > > * * > > *Sorry - last message was incomplete - technical difficulties* > > > > Haven't had any luck reproducing this issue with a JMeter test, however, > I > > can reproduce > > it on a fairly regular basis using our in-house application script, which > > puts tons of application > > messages on the queues. > > > > Also, I don't seem to see this issue when there is only a single broker > > running, only when > > there is two or more running in a network of brokers configuration. > > > > When I do see this issue, I •do• see it on JConsole as well as in the > > ActiveMQ WebAdmin console. > > > > *Possible Test Case:* > > > > To reproduce, start up multiple Producers, both of which are throwing > > 80,000+ messages > > to the two brokers (which are configured as a network of brokers ) and > have > > two consumers running on > > separate servers pulling items off of the application queue(s). > > > > > > On Wed, Sep 8, 2010 at 3:39 PM, Colleen Velo <cmv...@gmail.com> wrote: > > > >> Gary, > >> > >> Haven't had any luck reproducing this issue with a JMeter test, however, > I > >> can reproduce > >> it on a fairly regular basis using our in-house application script, > which > >> puts > >> > >> Also, I don't seem to see this issue when there is only a single broker > >> running, only when > >> there is two or more running in a network of brokers configuration. > >> > >> When I do see this issue, I •do• see it on JConsole as well as in the > >> ActiveMQ WebAdmin console. > >> > >> > > > >> To reproduce, start up multiple Producers, both of which are throwing > >> 80,000+ messages > >> at two brokers (which are networked together) and have the two consumers > >> running on > >> separate servers pulling items off of the application queue. > >> > >> On Wed, Sep 1, 2010 at 8:52 AM, Gary Tully <gary.tu...@gmail.com> > wrote: > >> > >>> does jconsole show the same negative number? Do you have a test case? > >>> > >>> On 1 September 2010 13:52, Colleen Velo <cmv...@gmail.com> wrote: > >>> > After only running my 3 ActiveMQ brokers for short time, I am seeing > >>> > negative numbers in > >>> > the "Number of Pending Messages" column. I started seeing this at > 5.3.2 > >>> > (after upgrading > >>> > from 5.2.0) and opened and issue on it: > >>> > • https://issues.apache.org/activemq/browse/AMQ-2887 > >>> > > >>> > It was recommended that I upgrade to ActiveMQ 5.4.0, which I did, > >>> however, I > >>> > am still > >>> > seeing this issue. > >>> > > >>> > Current Environment: > >>> > • CentOS release 5.2 (both consumers and brokers) > >>> > • 3 ActiveMQ brokers > >>> > • 7 consumers (across different queues) > >>> > > >>> > > >>> > Thanks, > >>> > > >>> > -- > >>> > Colleen Velo > >>> > email: cmv...@gmail.com > >>> > > >>> -- > >>> http://blog.garytully.com > >>> > >>> Open Source Integration > >>> http://fusesource.com > >>> > > > > > > > -- > http://blog.garytully.com > > Open Source Integration > http://fusesource.com > -- Colleen Velo email: cmv...@gmail.com
