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From "Omar Bashir (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQCPP-150) ActiveMQ-CPP consumer client hanging after receiving 32767 messages.
Date Thu, 25 Oct 2007 12:02:24 GMT
ActiveMQ-CPP consumer client hanging after receiving 32767 messages.
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                 Key: AMQCPP-150
                 URL: https://issues.apache.org/activemq/browse/AMQCPP-150
             Project: ActiveMQ C++ Client
          Issue Type: Bug
    Affects Versions: 2.1
         Environment: Ubuntu 6.10
            Reporter: Omar Bashir
            Assignee: Nathan Mittler


I was stress-testing an ActiveMQ-CPP consumer client by transmitting to it a large burst of
messages (100 per second). I realised that the client hangs after receiving 32767 messages
and the broker has a log message 

INFO PrefetchSubscription - Could not correlate acknowledgment with dispatched message: MessageAck
... 

I changed the size of the message from 40 bytes to over 600 bytes but it still behaved the
same way. Behaviour remained the same when I reduced message frequency to one per second.
I am using ActiveMQ-CPP-2.1 and ActiveMQ broker 4.1.1. 

I replaced the C++ consumer with the Java consumer and the problem disappeared. Then I ran
both the Java and C++ consumers concurrently both listening to the same queue, the C++ client
froze after 16 messages whereas the Java client continued to receive and process messages.

Now, I have the C++ producer client that disconnects after sending 32000 messages, reconnects
and then starts transmitting again. The problem disappears with this configuration. Both Java
and C++ clients have now received in excess of 230k messages and are still running perfectly
well.


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