[jboss-user] [JBoss Messaging] - Re: Connecting to two JBoss messaging servers causes interfe

[davidrh]

The uncommenting that I was talking about referred to the code in my example that is currently commented out for when any exception is caught on sending a message on connection1.  I was attempting to see if cleaning up (i.e. trying to close) the defunct connection on an exception affected the operation of the second connection (it does seem to). I think that the example never uses the first connection again after it has detected any exception.

I know this code is not how you would do it in practice, but I was trying to keep the sample as tight as possible to demonstrate the problem. Our actual application is more complex, as it initiates reconnect in a background thread and obtains its sessions from a session pool but I didn't think this was the cause of the problem that we are observing.

Is there any chance of getting the fix that Tim is talking about into a 1.0.x release?  We are hoping to offer JBoss Messaging support as part of our application, but with this problem we cannot as we need some form of high availability.  Was it a relatively confined change that we could patch in ourselves? Would you be able to give us a start and tell us a class and revision to look at?

As an aside, could the problem that Tim mentioned cause incorrect messages to get placed on a queue? We have sporadic reports from our testers of incorrect messages being placed on the queue. We only get these errors when running JBoss Messaging (i.e. not other providers that we support) and only when running two instances.  The error that they were reporting was that callback message objects were being placed onto the queues which then caused class cast exceptions in our application as weren't expecting that type of message. I don't know if that makes any sense to you, but if it doesn't I can get more information.

Thanks for the assistance,

David

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