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From "ying (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-2183) Master/slave out of sync with multiple consumers of a VirtualTopic on the same broker
Date Wed, 25 Mar 2009 19:18:44 GMT
Master/slave out of sync with multiple consumers of a VirtualTopic on the same broker
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                 Key: AMQ-2183
                 URL: https://issues.apache.org/activemq/browse/AMQ-2183
             Project: ActiveMQ
          Issue Type: Bug
    Affects Versions: 5.2.0
         Environment: solaris 10
            Reporter: ying
            Priority: Blocker
             Fix For: 5.3.0


1. producer of VirtualTopic.testTopic publish message to brokerA
2. consumer 1 on brokerB with "Consumer.A.VirtualTopic.testTopic
    consumer 2 on brokerB with "Consumer.A2.VirtualTopic.testTopic
3. brokerA and brokerB are bridged.

Result: you will get 
ERROR MasterBroker - Slave Failed
javax.jms.JMSException: Slave broker out of sync with master - Message: ID:yhe-1337-1236273055924-0:16:1:1:738
on queue does not exist among pending(0) for subscription: ID:yhe-3603-1236271682179-0:13:1:1

Reason:
In TransactionBroker.java there is a ActiveMQMessageAudit and it will be configured if the
broker is a slave. ActiveMQMessageAudit is using the messageId alone to check whether the
message is a duplicate. The message for consumer2 will be ignored as duplicate and not saved
to the message store because consumer1's same message arrives early.


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