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DurableMessagesGoesToDLQAfterRestart
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created by <a href="http://community.jboss.org/people/rickard%40rdahl.se">Rickard Dahl</a> in <i>JBoss Messaging</i> - <a href="http://community.jboss.org/message/536312#536312">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Short problem description: After restarting JBoss, pending messages on a durable topic will be put on DLQ. I expect them to stay on the topic even after a restart.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Background to my problem:</p><p>I have a topic and two durable subscribers (two MDB's). One of the subscribers will try to deliver messages to a web service, which _can_ be offline. In this case, the MDB will throw an exception. By doing like this, the message will be delivered when the web service comes up again.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>By default, the MDB will run 16 sessions in parallell.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The problem is that when the web service is offline and I restart JBoss, all pending messages will be put on DLQ.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>After the restart, ther is still 16 messages in </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>An example:</p><p>- I publish 56 messages to the topic</p><p>- The web service is offline</p><p>- Subscriber 1 (the "web service" one) now has 56 pending messages</p><p>- Subscriber 2: 56 successfully processed messages, 0 pending messages</p><p>- DLQ: 0 pending messages</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Result after the restart:</p><p>- Subscriber 1 (the "web service" one) now has 16 pending messages</p><p>- Subscriber 2: 0 pending messages</p><p>- DLQ: 40 pending messages</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>My setup:</p><p>- JBoss 4.2.3</p><p>- JBoss Messaging 1.4.4 (have also tried with 1.4.2 with the same result)</p><p>- Using a MSSQL database for persistance</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Note that the problem is NOT that the max number of retries has been reached since the MDB's have a LARGE numer of retries set with annotation "dlqMaxRetries" + each onMessage() takes a ouple of sec because of the web service call.</p></div>
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