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From "Michal Singer (JIRA)" <>
Subject [jira] Created: (AMQ-1626) Active MQ version 5.X - java 5 - memory leaks
Date Wed, 19 Mar 2008 05:51:32 GMT
Active MQ version 5.X - java 5 - memory leaks 

                 Key: AMQ-1626
             Project: ActiveMQ
          Issue Type: Bug
    Affects Versions: 5.0.0, 5.1.0
            Reporter: Michal Singer
            Priority: Blocker

when working with jdk1.5 and activemq 5.X. there are problems with memory leaks.
I use an embedded broker configured in spring 2.0.8.
I have a client application (producer ) and a server  (consumer) which inside it the broker.
The client uses PooledConnectionFactory, creates one connection, 2 sessions (receive and send),
and 1 producer. 
the client connects to 2 queues defined in the broker (configured in spring), and sets the
"reply to" to a temporary queue.
The server receives the messages from the client, does some processing, and returns a reply
on the temp q.
each request is handled by a diiferent temp q. the temp q is deleted once the client receives
the responses.
All resources are deleted on client side. the server is hanlded by spring. the server responses
on the temp queues.

During run, i see a few problems (in jconsole)
1. memory of broker increases gradually and never released
2. memory of temp queues increases gradually and never released
3. advisory topic node is created with many objects under it - which seem like with the same
ids as some of the temp queue. they accumulate,
and are never released.

These leaks prevent me from working,. the activemq will stop working after a few hours due
to 100%memory consumption.

There are also memory leaks concerning temp queues usage. 
I tried creating one connection on client or using a pool of connections but nothing helped.

It looks like some memory leak on the temp queues.

Do you have a work around for these problems, when will there be fixes for these problems?

If i will use a static queues, will all the leaks in the broker be solved? 

If i create a new connection for each request process, should this solve the problem?  (checked
- does not work)

I attached the client (producer) code and the server (consumer)

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