[ https://issues.apache.org/activemq/browse/AMQ-1946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Rob Davies resolved AMQ-1946.
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Fix Version/s: 5.3.0
Resolution: Fixed
Fixed by SVN revision 697937
> Negative ConsumerCount
> ----------------------
>
> Key: AMQ-1946
> URL: https://issues.apache.org/activemq/browse/AMQ-1946
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.1.0
> Environment: ActiveMQ 5.1
> Reporter: Joe Fernandez
> Assignee: Rob Davies
> Priority: Minor
> Fix For: 5.3.0
>
> Attachments: DestinationStatistics.patch
>
>
> Here's the scenario.
> You have one or more active consumers for a particular queue.
> Via the JConsole, you invoke the DestinationView's resetStatistics() method for that
queue
> The consumer count is reset to 0, even though you still have one or more active consumers
> If you shutdown the consumers and then refresh the 'Attributes' panel for the queue,
you end up with a negative value for the ConsumerCount attribute.
> The negative number reflects the number of once active consumers. So if you had 2 consumers,
you'll see -2.
> If you then restart the consumers, the negative value is increased by the number of active
consumers thus leaving you with an invalid consumer count. So if you previously had 2 consumers,
when you bring 2 back up you'll end up with a 0 value for the ConsumerCount
> This probably also holds true for the ProducerCount.
> The resetStatistics() method shouldn't reset these two counts.
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