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From "metatech (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-3472) Negative number of pending messages in broker
Date Tue, 17 Feb 2015 08:19:11 GMT

    [ https://issues.apache.org/jira/browse/AMQ-3472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14323912#comment-14323912
] 

metatech commented on AMQ-3472:
-------------------------------

A workaround in 5.7 is to replace the following line in method "purge" of class "org.apache.activemq.broker.region.Queue"
-        this.destinationStatistics.getMessages().setCount(0);
+        this.destinationStatistics.getMessages().setCount(this.destinationStatistics.getInflight().getCount());
AMQ-4598 included in ActiveMQ 5.8 probably has a real fix.


> Negative number of pending messages in broker
> ---------------------------------------------
>
>                 Key: AMQ-3472
>                 URL: https://issues.apache.org/jira/browse/AMQ-3472
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.5.0
>         Environment: RHEL 5.5, Sun Java 1.6.0_21, Tomcat 6, Synchronous message consumers,
10k messages per consumer prefetch, 2-10 million messages a day,  in-container broker.
>            Reporter: Marcin Depinski
>
> After the purge and deletion of a queue and a restart of the broker, the broker shows
a negative number of pending messages. Similar to AMQ-1693. Seen this at least a dozen times
in our environment. Another restart with no messages pending and no consumers will zero the
counter correctly but we can't be restarting our app every time this happens. Things still
seem to work after the counter goes negative but if anything inside ActiveMQ is counting on
this counter being correct well... let me know if I can help



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