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https://issues.apache.org/jira/browse/AMQ-1940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14316080#comment-14316080
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Sergey commented on AMQ-1940:
------------------------------
What I can see in JMX using Hawtio:
Total dequeue count 2474137
Total enqueue count 1795563
Total message count -678584
BTW, I have camel route within broker, where incoming messages are duplicated
in two queues. And, at the moment, web console displays something like:
||queue||pending||enqueued||dequeued||
|algo250a|856725|906471|1552909|
|algo250b|-23451|906472|929923|
|highwayQueue|0|0| 0|
Last one is inbound queue, algoxxx are outbound. I expect that number of
enqueued messages for inbound Q should be equal to number of dequeued. But its
always zero.
> Negative queue size (reproducible)
> ----------------------------------
>
> Key: AMQ-1940
> URL: https://issues.apache.org/jira/browse/AMQ-1940
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.2.0
> Environment: Found on Windows but reproduced under Linux
> Reporter: Vadim Chekan
> Assignee: Rob Davies
> Priority: Critical
> Fix For: 5.3.0
>
> Attachments: Main.java, Picture 6.png, QueuePurgeTest.java.diff.txt
>
>
> When you "purge" queue from web admin console, it zeroes queue message
> counter. But if you have an active consumer at that time which
> pre-fetched messages than your consumer will keep sending ack as it
> process messages from its buffer. ActiveMQ will keep decrement counter
> upon receiving each ack. So when consumer is done queue will show
> MINUS<consumer buffer size>.
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