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https://issues.apache.org/activemq/browse/AMQ-1698?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rob Davies reassigned AMQ-1698:
-------------------------------
Assignee: Rob Davies
> AMQ Threads prevent clean jvm termination
> -----------------------------------------
>
> Key: AMQ-1698
> URL: https://issues.apache.org/activemq/browse/AMQ-1698
> Project: ActiveMQ
> Issue Type: Bug
> Components: JMS client
> Affects Versions: 5.0.0
> Environment: Any
> Reporter: Dominic Tulley
> Assignee: Rob Davies
>
> A java process using the AMQ client and connecting to a broker will end up
> with a couple of threads running called "InactivityMonitor WriteCheck" and
> "InactivityMonitor ReadCheck".
> When the main jvm thread finishes and the jvm tries to exit, these two
> threads have not stopped running and, because they are not daemon threads,
> the jvm is not able to exit. The process ends up hanging - mostly shut down
> but not quite.
> This is easily reproduced with the most trivial of messaging code (See below)
> which will not terminate.
> Changing the creation of these two threads (which arise from the
> instantiation of Timers really) to make them daemons resolves the problem.
> Sample Code
> -------------------
> public static void main(String [] args)
> {
> ActiveMQConnectionFactory connectionFactory = new
> ActiveMQConnectionFactory("","","tcp://localhost:61616");
> Connection connection = connectionFactory.createConnection();
> connection.start();
> // Create the session
> Session session = connection.createSession(false,
> Session.AUTO_ACKNOWLEDGE);
> Destination destination = session.createQueue("TEST_QUEUE");
> // Create the producer.
> MessageProducer producer = session.createProducer(destination);
> producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
> TextMessage message = session.createTextMessage("Hello");
> producer.send(message);
>
> producer.close();
> session.close();
> connection.close();
> }
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