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https://issues.apache.org/jira/browse/QPID-7593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15766697#comment-15766697
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Keith Wall commented on QPID-7593:
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In the fix above, we opted to prevent the removed QueueConsumerNode holding a
reference to the QueueConsumer. This resolves the issue.
> Ending an AMQP1.0 connection with consumer leaks the connection, session and
> objects related to the consumer
> ------------------------------------------------------------------------------------------------------------
>
> Key: QPID-7593
> URL: https://issues.apache.org/jira/browse/QPID-7593
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Affects Versions: qpid-java-7.0.0
> Reporter: Keith Wall
> Fix For: qpid-java-7.0.0
>
> Attachments: Screen Shot 2016-12-20 at 08.16.37.png
>
>
> If I run the following code, jvisualvm shows that the object that underlies
> the AMQP1.0 Connection, Session and Consumer are leaked.
> The GC root is the QueueConsumerNodeList associated with the
> Queue/QueueConsumerManager. The node the tail and is in the deleted state
> and will be eventually scavenged (once new consumers join the queue). This
> is common with the other protocols and I believe this aspect is as designed.
> However, I think the fact that the Connections/Session/ConsumerTarget remains
> referenced is a defect. It shows us that the ConsumerTarget_1.0
> (org/apache/qpid/server/consumer/AbstractConsumerTarget.java:284) is not
> being closed. Other protocols don't show this same defect.
> {code:java}
> Properties properties = new Properties();
> properties.load(resourceAsStream);
> Context context = new InitialContext(properties);
> ConnectionFactory connectionFactory = (ConnectionFactory)
> context.lookup("qpidConnectionfactory");
> Connection connection = connectionFactory.createConnection();
> connection.start();
> Session session = connection.createSession(false,
> Session.AUTO_ACKNOWLEDGE);
> Destination destination = (Destination) context.lookup("myqueue");
> MessageConsumer messageConsumer =
> session.createConsumer(destination);
> if (true) System.exit(1);
> {code}
> I expect this defect does not appear in release versions of the product.
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