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From "Christian Gross (JIRA)" <>
Subject [jira] Created: (AMQNET-132) Deadlock with acknowledgement
Date Sun, 07 Dec 2008 23:18:05 GMT
Deadlock with acknowledgement

                 Key: AMQNET-132
             Project: ActiveMQ .Net
          Issue Type: Bug
          Components: ActiveMQ Client
         Environment: Windows Quadcore machine, running Visual Studio 2008, and .NET 2.0
            Reporter: Christian Gross
            Assignee: Jim Gomes

When I send and receive very large number of text based messages the code doing the receiving
will lock up. This behavior occurs when you use async or the IMessageConsumer.Read method.

The problem is that when the Receive method is called it calls the CheckClosed. In the method
CheckClosed there is a lock(this) statement, and it is waiting for the lock to be released.
The problem is that the method Dispatch that also uses the same lock is deadlocked on something.
In specific the following line is the deadlock:


If I switch the session settings from AutoAcknowledge to ClientAcknowledge then I can retrieve
all of the messages without any deadlocks occurring.

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