[jboss-jira] [JBoss JIRA] Created: (JBMESSAGING-490) Race condition on ServerConsumerEndpoint creation
Race condition on ServerConsumerEndpoint creation
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Key: JBMESSAGING-490
URL: http://jira.jboss.com/jira/browse/JBMESSAGING-490
Project: JBoss Messaging
Issue Type: Bug
Reporter: Ovidiu Feodorov
Assigned To: Ovidiu Feodorov
Priority: Minor
Fix For: 1.0.1.CR4
Because "started" is not declared volatile, there's a minor race condition
between the construction of the the ServerConsumerEndpoint on a started connection, and
delivery request.
Test fragment:
conn.start();
Session sess = conn.createSession(true, Session.SESSION_TRANSACTED);
....
MessageConsumer cons1 = sess.createConsumer(queue);
Trace:
2006-08-04 10:05:24,050 23375 DEBUG [org.jboss.jms.server.endpoint.ServerSessionEndpoint]
(main:) creating consumer for JBossQueue[Queue], selector null, subscription null
2006-08-04 10:05:24,050 23375 TRACE [org.jboss.jms.server.endpoint.ServerConsumerEndpoint]
(main:) creating consumer endpoint -2147483430
2006-08-04 10:05:24,050 23375 TRACE [org.jboss.messaging.core.ChannelSupport] (main:)
CoreQueue[1] attempting to add receiver ConsumerEndpoint[-2147483430]
2006-08-04 10:05:24,050 23375 TRACE [org.jboss.messaging.core.ChannelSupport] (main:)
receiver ConsumerEndpoint[-2147483430] added
2006-08-04 10:05:24,050 23375 DEBUG [org.jboss.jms.server.endpoint.ServerConsumerEndpoint]
(main:) ConsumerEndpoint[-2147483430] created
2006-08-04 10:05:24,050 23375 TRACE [org.jboss.jms.server.endpoint.ServerConsumerEndpoint]
(Thread-3:) ConsumerEndpoint[-2147483439] receives reference 3584 for delivery
2006-08-04 10:05:24,050 23375 TRACE [org.jboss.jms.server.endpoint.ServerSessionEndpoint]
(main:) SessionEndpoint[-2147483431] caching consumer -2147483430
2006-08-04 10:05:24,050 23375 DEBUG [org.jboss.jms.server.endpoint.ServerConsumerEndpoint]
(Thread-3:) ConsumerEndpoint[-2147483439] NOT started yet!
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