[QPID-4428] HA add UUID tag to avoid using an out of date queue.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.19
• Fix Version/s: 0.19
• Component/s: C++ Clustering
• Assignee: Alan Conway
• Reporter: Alan Conway
• Created: 07/Nov/12 21:10
• Updated: 29/Jul/13 18:53
• Resolved: 14/Nov/12 16:06

Description

Here's the scenario: we have a cluster with primary A and backups B and C. There is a queue Q that is replicated to both. Now A dies and B takes over as primary. Before C has connected to B, a client destroys Q and creates a new queue with the same name, Q. When C does connect it sees a queue named Q and mistakenly assumes it is the same queue as it's own Q - so it has an incorrect replica of Q. The same scenario applies to exchanges.

The fix is to tag queues and exchanges with a UUID, so backups can identify that the queue has changed even if the name is the same.