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https://issues.apache.org/activemq/browse/AMQNET-194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=54669#action_54669
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Mark Gellings commented on AMQNET-194:
--------------------------------------

Hi Timothy,

Thanks for you prompt response to this issue.  As of a few weeks ago I couldn't 
get JDBC Master/Slave in a 5.3 snapshot to work with NMS???  I was trying to 
confirm a bug fix for ActiveMQ 5.3.  See [1].  You actually did respond in the 
thread.  :)  I understand just setting a JDBC Master/Slave environment to test 
this may be tedious for you.  So I will try again with the latest snapshot. 

A question for you, did the consumer process more than 65535 messages?  It 
seems like the failure for me generally occurs at that count.  I'm not 
explicitly failing over the broker.  The broker actually "does" not fail over 
at all when my test runs.  The master stays the master, so I'm not sure at this 
point what triggers the restore to occur other than the probable not 
coincidence of 65535 messages.

I'll be continuing to troubleshoot.

Let me know what you think.

[1] 
http://www.nabble.com/Re%3A-Getting-negative-number-of-pending-messages-p25458685.html

-Mark

> Async error occurred: javax.jms.JMSException: Unmatched acknowledege when 
> Acknowledgemode of Transactional used
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: AMQNET-194
>                 URL: https://issues.apache.org/activemq/browse/AMQNET-194
>             Project: ActiveMQ .Net
>          Issue Type: Bug
>          Components: ActiveMQ, NMS
>    Affects Versions: 1.0.0, 1.1.0
>         Environment: ActiveMQ 5.2 as Windows Service on Windows Server 2008 
> 64-bit.  Client producer and consumer on Windows XP
>            Reporter: Mark Gellings
>            Assignee: Timothy Bish
>             Fix For: 1.2.0
>
>         Attachments: activemq.xml, NativeNMSConsumerAndProducer.zip
>
>
> See 
> http://www.nabble.com/Async-error-occurred--%3E-ActiveMQ-5.2-and-NMS-td25474605.html
>  for a primer to this issue.
> After troubleshooting this,  it appears that if a producer sends 65535+ 
> messages to the broker that the consumer gets into an infinite loop after 
> consuming 65535 messages.  
> I will be attaching a test case for this.  Run a producer and a consumer, 
> send 100,000 messages and the test case fails at 65535 messages consumed 
> exactly.
> What appears to be happening is that the NMS provider (or ActiveMQ 5.2) is 
> hitting the upper bound of a ushort and then starting all back over again 
> sending message acknowledgements from message #1.  This message was already 
> dispatched though and the broker lot shows an error that the message is not 
> in the dispatched-list .
> The consumer shows a message acknowledgement going out.
> These errors repeat infinitely it seems.  Once the 65535th message errors out 
> then it starts all over again at the 1st message.
> Notice the ProducerSequenceId growing beyond 65535.  I can't seem to avoid 
> this error, even if I reinstantiate the producer sporadically.
> At the beginning of the source code I have included a loop which shows the 
> behavior of incrementing a ushort beyond 65535.  The variable resets to the 
> lower bound as expected.
> [DEBUG] Apache.NMS.Tracer - Sending Ack: MessageAck[ 
> Destination=queue://testmonday150 TransactionId=LocalTransactionId[ 
> Value=30558 ConnectionId=ConnectionId[ 
> Value=2b6ae5a1-c0e1-4523-8d9c-4143cc9d74e8 ] ] ConsumerId=ConsumerId[ 
> ConnectionId=2b6ae5a1-c0e1-4523-8d9c-4143cc9d74e8 SessionId=1 Value=1 ] 
> AckType=2 FirstMessageId=MessageId[ ProducerId=ProducerId[ 
> ConnectionId=9e256437-df18-44e5-9cb2-b7f3feaebcfd Value=1 SessionId=1 ] 
> ProducerSequenceId=30558 BrokerSequenceId=80280 ] LastMessageId=MessageId[ 
> ProducerId=ProducerId[ ConnectionId=9e256437-df18-44e5-9cb2-b7f3feaebcfd 
> Value=1 SessionId=1 ] ProducerSequenceId=30558 BrokerSequenceId=80280 ] 
> MessageCount=1 ]
>  ERROR Service                        -
>  Async error occurred: javax.jms.JMSException: Unmatched acknowledege: 
> MessageAc
> k {commandId = 26140, responseRequired = false, ackType = 2, consumerId = 
> 41b092
> 97-da4b-4d11-9ed7-09d344825740:1:1, firstMessageId = 
> 4128971e-c69b-4892-8be5-d99
> 868045881:1:1:30558, lastMessageId = 
> 4128971e-c69b-4892-8be5-d99868045881:1:1:30
> 558, destination = queue://testwed924, transactionId = 
> TX:41b09297-da4b-4d11-9ed
> 7-09d344825740:30558, messageCount = 1}; Could not find Message-ID 
> 4128971e-c69b
> -4892-8be5-d99868045881:1:1:30558 in dispatched-list (start of ack)
> INFO   | jvm 1    | 2009/10/07 14:03:27 | javax.jms.JMSException: Unmatched 
> ackn
> owledege: MessageAck {commandId = 26140, responseRequired = false, ackType = 
> 2,
> consumerId = 41b09297-da4b-4d11-9ed7-09d344825740:1:1, firstMessageId = 
> 4128971e
> -c69b-4892-8be5-d99868045881:1:1:30558, lastMessageId = 
> 4128971e-c69b-4892-8be5-
> d99868045881:1:1:30558, destination = queue://testwed924, transactionId = 
> TX:41b
> 09297-da4b-4d11-9ed7-09d344825740:30558, messageCount = 1}; Could not find 
> Messa
> ge-ID 4128971e-c69b-4892-8be5-d99868045881:1:1:30558 in dispatched-list 
> (start o
> f ack)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.re
> gion.PrefetchSubscription.assertAckMatchesDispatched(PrefetchSubscription.java:4
> 38)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.re
> gion.PrefetchSubscription.acknowledge(PrefetchSubscription.java:188)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.re
> gion.AbstractRegion.acknowledge(AbstractRegion.java:373)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.re
> gion.RegionBroker.acknowledge(RegionBroker.java:462)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.Tr
> ansactionBroker.acknowledge(TransactionBroker.java:194)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.Br
> okerFilter.acknowledge(BrokerFilter.java:74)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.Br
> okerFilter.acknowledge(BrokerFilter.java:74)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.Br
> okerFilter.acknowledge(BrokerFilter.java:74)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.Br
> okerFilter.acknowledge(BrokerFilter.java:74)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.Mu
> tableBrokerFilter.acknowledge(MutableBrokerFilter.java:85)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.Tr
> ansportConnection.processMessageAck(TransportConnection.java:456)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.command.M
> essageAck.visit(MessageAck.java:205)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.Tr
> ansportConnection.service(TransportConnection.java:305)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.broker.Tr
> ansportConnection$1.onCommand(TransportConnection.java:179)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.transport
> .TransportFilter.onCommand(TransportFilter.java:68)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.transport
> .WireFormatNegotiator.onCommand(WireFormatNegotiator.java:143)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.transport
> .InactivityMonitor.onCommand(InactivityMonitor.java:206)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.transport
> .TransportSupport.doConsume(TransportSupport.java:84)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.transport
> .tcp.TcpTransport.doRun(TcpTransport.java:203)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> org.apache.activemq.transport
> .tcp.TcpTransport.run(TcpTransport.java:185)
> INFO   | jvm 1    | 2009/10/07 14:03:27 |       at 
> java.lang.Thread.run(Unknown
> Source)

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