[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: Order of Deliveries between Backup and Live Node

[timfox]

I think I can understand this now.

I believe it can be explained in a more simple use case:

consumer A rolls back message M1 on Queue Q
rollback is replicated
delivery of message M2 on live to consumer B on Queue Q
delivery is replicated
rollback hits backup and M1 added to top of Q
replicated delivery hits backup looking to find M2 on top of Q but instead find M1

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