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From "Justin Pitts (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-1990) Failing network connectors randomly log SEVERE message : Could not accept connection : java.lang.Object cannot be cast to org.apache.activemq.command.Command
Date Thu, 30 Oct 2008 01:13:52 GMT
Failing network connectors randomly log SEVERE message : Could not accept connection : java.lang.Object
cannot be cast to org.apache.activemq.command.Command
-------------------------------------------------------------------------------------------------------------------------------------------------------------

                 Key: AMQ-1990
                 URL: https://issues.apache.org/activemq/browse/AMQ-1990
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.1.0
         Environment: Linux, Windows XP, Mac OSX 10.5.1
            Reporter: Justin Pitts


I have an application which embeds the broker service. A common deployment scenario is a sometimes-connected
network of these applications. Unfortunately, I don't have many situations where I can use
discovery, so the network connectors are static configurations. Randomly, when these network
connections are unable to connect, I see the following exception trace:

30 Sep 2008 18:36:18 ERROR [ActiveMQ Transport Initiator: vm://instance-2#2] (TransportConnector.java:234)
- Could not accept connection : java.lang.Object cannot be cast to org.apache.activemq.command.Command

These errors seem like they might be the result of a race condition during start or stop of
a network connector. I will attach a sample application which demonstrates the problem. You
may have to run the application a couple times to provoke it.



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