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https://issues.apache.org/jira/browse/AMQNET-332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13064265#comment-13064265
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Matthew Good commented on AMQNET-332:
-------------------------------------
I would love to create a unit test but I can't determine the cause. If you
look at the GetPriority method, there is only one possible place where a NRE
could exist. It seems like it lost track of the message.
This error is killing me because the message just hangs and doesn't get resent.
> Rollback fails with Null Reference
> ----------------------------------
>
> Key: AMQNET-332
> URL: https://issues.apache.org/jira/browse/AMQNET-332
> Project: ActiveMQ .Net
> Issue Type: Bug
> Components: NMS
> Affects Versions: 1.5.0
> Environment: Windows .NET client
> Reporter: Matthew Good
> Assignee: Jim Gomes
>
> I call rollback several times and retries occur as expected. At some point,
> the rollback fails and I no longer receive the message. I would like to give
> information on how to produce this but it just happens randomly. I'm hoping
> from the stack trace, you might have an idea of the cause.
> There are no errors logged on the server. This error is on the client side:
> Message: Unable to rollback transaction.
> Stack:SessionExecutor.Dispatch => MessageConsumer.Dispatch =>
> MessageListenerDelegate.OnMessage
> System.NullReferenceException: Object reference not set to an instance of an
> object.
> at
> Apache.NMS.ActiveMQ.Util.SimplePriorityMessageDispatchChannel.GetPriority(MessageDispatch
> message)
> at
> Apache.NMS.ActiveMQ.Util.SimplePriorityMessageDispatchChannel.GetList(MessageDispatch
> md)
> at
> Apache.NMS.ActiveMQ.Util.SimplePriorityMessageDispatchChannel.EnqueueFirst(MessageDispatch
> dispatch)
> at Apache.NMS.ActiveMQ.SessionExecutor.ExecuteFirst(MessageDispatch
> dispatch)
> at Apache.NMS.ActiveMQ.Session.Redispatch(MessageDispatchChannel channel)
> at Apache.NMS.ActiveMQ.MessageConsumer.Rollback()
> at
> Apache.NMS.ActiveMQ.MessageConsumer.MessageConsumerSynchronization.AfterRollback()
> at Apache.NMS.ActiveMQ.TransactionContext.AfterRollback()
> at Apache.NMS.ActiveMQ.TransactionContext.Rollback()
> at Apache.NMS.ActiveMQ.Session.DoRollback()
> at Apache.NMS.ActiveMQ.Session.Rollback()
> at
> Ipc.General.ActiveMQ.ActiveMqListenerBase.MessageListenerDelegate.OnMessage(IMessage
> message)
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