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From "zachary.zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMQ-4619) lose messages in Shared File System Master/Slave while swich master to slave quickly and many times
Date Fri, 05 Jul 2013 08:45:48 GMT
zachary.zhang created AMQ-4619:
----------------------------------

             Summary: lose messages in  Shared File System Master/Slave while swich master
to slave quickly and many times
                 Key: AMQ-4619
                 URL: https://issues.apache.org/jira/browse/AMQ-4619
             Project: ActiveMQ
          Issue Type: Bug
          Components: JMS client, Message Store
    Affects Versions: 5.8.0
         Environment: pc(computer), windows 7(os), Shared File System Master/Slave
            Reporter: zachary.zhang
             Fix For: 5.x


There are two activemq instance in my pc, they are in  Shared File System Master/Slave with
kahaDB model. 
1 set up the consumer listener and  receive message use failover protocol.
2 set up the producer to send message. the total is 6000.
3 close the master actviemq , so the slave can replace the master to work.
repeat the step 3 many times (more than 5) and quickly.

result:
1 the producer will throw exception several times:
javax.jms.TransactionRolledBackException: Transaction completion in doubt due to failover.
Forcing rollback of TX:ID:wcmis175-55198-1372489851858-1:1:643
                at org.apache.activemq.state.ConnectionStateTracker.restoreTransactions(ConnectionStateTracker.java:231)
                at org.apache.activemq.state.ConnectionStateTracker.restore(ConnectionStateTracker.java:169)
                at org.apache.activemq.transport.failover.FailoverTransport.restoreTransport(FailoverTransport.java:821)
                at org.apache.activemq.transport.failover.FailoverTransport.doReconnect(FailoverTransport.java:996)
                at org.apache.activemq.transport.failover.FailoverTransport$2.iterate(FailoverTransport.java:143)
                at org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:129)
                at org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:47)
                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
                at java.lang.Thread.run(Thread.java:722)

2 sometimes it will lose messages in consumer side (for example producer send 6000 messages
,throw 8 exceptions , the consumer will receive 5998 messages).I don't know where the lost
messages going.


So ,I think this bug is dangerous if it was really exsit. Someetimes we must use failover
switch the master and slave,and we don't want to face losing messages.


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