[rabbitmq-discuss] Clustering Question

Jason J. W. Williams jasonjwwilliams at gmail.com
Mon Jun 8 22:30:36 BST 2009

Hey Matthias,

My wording is a bit sloppy. :-) My consumer recreated the queue on
reconnect. Then when Node A came up, it saw the queue already existed
and didn't replay into it.


On Mon, Jun 8, 2009 at 3:19 PM, Matthias Radestock<matthias at lshift.net> wrote:
> Jason,
> Jason J. W. Williams wrote:
>> I'll recheck. The issue we ran into was:
>> Node A & Node B
>> Node A contains queue 1.
>> Node A dies. Persistent unserviced messages remain in queue 1.
>> Queue 1 moves to Node B.
>> Node A restarts and rejoins cluster.
>> Unserviced messages from before failure, do not replay into queue 1 as
>> located now on Node B.
> Interesting!
> How did you "move" the queue between nodes? That is not a feature that is
> supported in RabbitMQ (yet).
> I suppose that while node A is down a client may connect to node B and
> declare a queue with the same name. I am actually not sure what happens in
> that case, and how it affects re-queueing of persisted messages when node A
> subsequently recovers. So some test scenarios along these lines and
> observations of current behaviour would be very much appreciated.
> Regards,
> Matthias.

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