In theory it should work.
Only change that might break compatibility is https://github.com/apache/activemq-artemis/commit/68f6d8263d8c795722805f0e4d6939e7a8b9ed48 which is ARTEMIS-3743 / ARTEMIS-3766 Use ACKReason on Mirror to determine target operations and fixing Delivering statistics on Mirror I tried to not break compatibility, but I just realized we should add a test to validate compatibility between mirrors. so, I will say it should be compatible, but I would test it before doing it in the real system. if you are willing to contribute to a compatibility test :) On Tue, Oct 11, 2022 at 10:06 AM Stephen Baker <stephen.ba...@rmssoftwareinc.com> wrote: > > We are planning our production upgrade from 2.20 to 2.25. These upgrades > involve a loss of service in the window between stopping the live and when > the backup instance becomes ready to process messages. > > I was wondering if the mirror protocol is expected to be compatible between > those versions. If so we could upgrade our cold site, and then wait for a > planned failover to avoid any additional down time. I know that quite a bit > of work was done by Clebert in 2.24 so I was hoping he could weigh in. > > Stephen E Baker -- Clebert Suconic
