[jboss-jira] [JBoss JIRA] Created: (JBMESSAGING-1889) Duplicate messages are produced during cluster failover when a cluster node is shutdown

[Tom Ross (JIRA)]

Duplicate messages are produced during cluster failover when a cluster node is shutdown
---------------------------------------------------------------------------------------

                 Key: JBMESSAGING-1889
                 URL: https://issues.jboss.org/browse/JBMESSAGING-1889
             Project: JBoss Messaging
          Issue Type: Bug
          Components: Messaging Core
    Affects Versions: 1.4.8.SP1
         Environment: JBoss EAP 5.1.1
            Reporter: Tom Ross
            Assignee: Yong Hao Gao


The scenarion describes a set-up consisting of JBoss cluster and a stand alone JBoss instance hosting a MDB. 

During the test the master node of the JBoss cluster is shutdown using CTRL/C or shutdown.sh script.

The following is a description of the events that hava happened that lead to duplicate messages.

- Message is delivered to a MDB from node-1 of the cluster to a MDB in a transaction. The transaction prepare has failed because the server peer of node-1 is shutting down.

- Message is rolled back and received again in another transaction. This happens at the client side only. Then the transaction is committed on node-2 as the client has failed over to node-2 of the cluster.

- Meanwhile the fact that node-1 is shutting down causes server side failover to happen and the message is failed over to node-2.

- node-2 redelivers the message to the MDB in a separate transaction and committs.

So the message is received twice.



--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira