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From Johan Edstrom <seij...@gmail.com>
Subject Re: Possibly a daft question
Date Tue, 10 May 2011 14:42:19 GMT
It is possible that 4 made it on the "extra" message in a buffer,  but your client did not
yet see it.
If you have CLIENT_ACKNOWLEDGE you will then ack all messages on the session,
to truly force ack of everything you can use AMQ's INDIVIDUAL_ACKNOWLEDGEMENT



> But I'll ask it anyway...
> 
> Client(s) receiving from a topic messages 1, 2, 3 and 4. prefetch is set to
> 1, client to ACK. Msgs 1,2 come in and are ACK'd. Msg 3 comes in but is not
> ACK'd. Does msg 4 make it through or must 3 be either ACK'd or expired
> first?
> 
> I am expecting that the queue comes to a halt unless msg 3 is "dealt
> with"... Something's just been noticed which causes me to ask to confirm
> this... :-)
> 
> James


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