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https://issues.apache.org/jira/browse/AMQ-4950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13853933#comment-13853933
 ] 

Torsten Mielke commented on AMQ-4950:
-------------------------------------

Full error message:
{noformat}
2013-12-20 13:38:12,558 [0.1:61249@61251] - WARN  FailoverTransport             
 - Transport (tcp://127.0.0.1:61249) failed, reason:  java.io.IOException: 
Unexpected error occured: java.lang.ClassCastException: 
org.apache.activemq.command.ExceptionResponse cannot be cast to 
org.apache.activemq.command.IntegerResponse, attempting to automatically 
reconnect
...
2013-12-20 13:38:12,581 [main           ] - WARN  TransactionContext            
 - prepare of: XID:[86,globalId=00000001,branchId=00000001] failed with: 
javax.jms.JMSException: Cannot call prepare now.
javax.jms.JMSException: Cannot call prepare now.
        at 
org.apache.activemq.util.JMSExceptionSupport.create(JMSExceptionSupport.java:54)
        at 
org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:1405)
        at 
org.apache.activemq.TransactionContext.syncSendPacketWithInterruptionHandling(TransactionContext.java:757)
        at 
org.apache.activemq.TransactionContext.prepare(TransactionContext.java:453)
        at 
org.apache.activemq.bugs.AMQXXXTest.testXAPrepareFailure(AMQXXXTest.java:121)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at junit.framework.TestCase.runTest(TestCase.java:176)
        at junit.framework.TestCase.runBare(TestCase.java:141)
        at 
org.apache.activemq.CombinationTestSupport.runBare(CombinationTestSupport.java:107)
        at 
org.apache.activemq.CombinationTestSupport.runBare(CombinationTestSupport.java:113)
        at junit.framework.TestResult$1.protect(TestResult.java:122)
        at junit.framework.TestResult.runProtected(TestResult.java:142)
        at junit.framework.TestResult.run(TestResult.java:125)
        at junit.framework.TestCase.run(TestCase.java:129)
        at junit.framework.TestSuite.runTest(TestSuite.java:255)
        at junit.framework.TestSuite.run(TestSuite.java:250)
        at 
org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:84)
        at 
org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at 
org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
        at 
org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
        at 
org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:175)
        at 
org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:81)
        at 
org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:68)
Caused by: javax.transaction.xa.XAException: Cannot call prepare now.
        at 
org.apache.activemq.transaction.XATransaction.illegalStateTransition(XATransaction.java:100)
        at 
org.apache.activemq.transaction.XATransaction.prepare(XATransaction.java:195)
        at 
org.apache.activemq.broker.TransactionBroker.prepareTransaction(TransactionBroker.java:248)
        at 
org.apache.activemq.bugs.AMQXXXTest$1.prepareTransaction(AMQXXXTest.java:81)
        at 
org.apache.activemq.broker.MutableBrokerFilter.prepareTransaction(MutableBrokerFilter.java:127)
        at 
org.apache.activemq.broker.TransportConnection.processPrepareTransaction(TransportConnection.java:408)
        at 
org.apache.activemq.command.TransactionInfo.visit(TransactionInfo.java:98)
        at 
org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:295)
        at 
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:152)
        at 
org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
        at 
org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:113)
        at 
org.apache.activemq.transport.AbstractInactivityMonitor.onCommand(AbstractInactivityMonitor.java:270)
        at 
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
        at 
org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:214)
        at java.lang.Thread.run(Thread.java:695)
{noformat}

> " java.lang.ClassCastException: org.apache.activemq.command.ExceptionResponse 
> cannot be cast to org.apache.activemq.command.IntegerResponse, attempting to 
> automatically reconnect"
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-4950
>                 URL: https://issues.apache.org/jira/browse/AMQ-4950
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.9.0
>            Reporter: Torsten Mielke
>            Assignee: Torsten Mielke
>              Labels: XA, prepare, transaction
>
> If an XA prepare() raises an exception back to the client it results in the 
> warning 
> {noformat}
> WARN  FailoverTransport - Transport (tcp://127.0.0.1:61249) failed, reason:  
> java.io.IOException: 
> Unexpected error occured: java.lang.ClassCastException: 
> org.apache.activemq.command.ExceptionResponse cannot be cast to 
> org.apache.activemq.command.IntegerResponse, attempting to automatically 
> reconnect
> {noformat}
> which triggers a failover reconnect and a replay of the transaction which 
> then causes
> {noformat}
> 2013-12-20 13:38:12,581 [main] - WARN  TransactionContext - prepare of: 
> XID:[86,globalId=00000001,branchId=00000001] failed with: 
> javax.jms.JMSException: Cannot call prepare now.
> {noformat}



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