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https://issues.apache.org/activemq/browse/AMQNET-194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=54799#action_54799
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Mark Gellings commented on AMQNET-194:
--------------------------------------
Okay thanks for your opinion. Provided fix
https://issues.apache.org/activemq/browse/AMQNET-159 works as expected may
consider just using trunk. Seems like the failover protocol may have a problem
though from my testing today. I need to investigate a bit more. I also need
to code review AMQNET-159 so maybe I'll find something.
One last thing. I noticed CommandId just keeps incrementing. I assume it may
get to Int32.MaxValue * 2 and cause problems again. Thoughts???
Albeit that is a very large number, and the request map is now being cleared
correctly, so the "An item with the same key has already been added." exception
should not occur.
Either way do you see any harm in making the nextCommandId in the
ResponseCorrelator a long vs. int? Could this have any implications on other
classes if it's a long (as other classes may expect a max value of
Int32.MaxValue if their member variables use int).
Thoughts?
> 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, CropperCapture[61].jpg,
> CropperCapture[62].jpg, CropperCapture[63].jpg, debugging.patch,
> debuggingTrunk.patch, NativeNMSConsumerAndProducer.zip,
> screenshot-of-captured-exception.jpg
>
>
> 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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