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From "Andrew Lusk (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-677) ActiveMQ broker leaks advisory topics
Date Thu, 06 Apr 2006 05:32:49 GMT
ActiveMQ broker leaks advisory topics
-------------------------------------

         Key: AMQ-677
         URL: https://issues.apache.org/activemq/browse/AMQ-677
     Project: ActiveMQ
        Type: Bug

  Components: Broker  
 Environment: linux, near-trunk version of ActiveMQ
    Reporter: Andrew Lusk
 Attachments: ProducerTool.java

When I run the attached code, which AFAIK is completely legal JMS, the ActiveMQ broker grows
to 500+ mb and crashes due to being out of heap space.  

Some investigation with hprof has lead me to believe that the advisory topics created by the
MessageConsumers (and Producers, but I use the same producer each time so that's not causing
a problem) are being put into a DestinationMap and not being removed.

The rough origin of this is in the addProducer call in AdvisoryBroker, which creates the advisory
topic.

Note that this memory is not freed when the DestinationInfo removing the original temptopic
is received, nor when the actual client exits.  The object lifetime of these advisory destinations
seems very poorly defined.  If they are implicitly created by the server, they should be implicitly
destroyed by the same.

To reproduce, I've been running this code with -Dtopic=true and -Dmax=10000 (though the problem
shows up well before this amount).  This is just a modified version of the example ProducerTool
(note it doesn't actually send any messages).

Please verify the correctness of the attached code.

Andrew Lusk


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