2015-12-02 16:52 GMT+03:00 Jordan Pittier <jordan.pittier at scality.com>: > > On Wed, Dec 2, 2015 at 1:05 PM, Dmitry Mescheryakov < > dmescheryakov at mirantis.com> wrote: > >> >> >> My point is simple - lets increase our architecture scalability by 2-3 >> times by _maybe_ causing more errors for users during failover. The >> failover time itself should not get worse (to be tested by me) and errors >> should be correctly handler by services anyway. >> > > Scalability is great, but what about correctness ? > Jordan, users will encounter problems only when some of RabbitMQ nodes go down. Under normal circumstances it will not cause any additional errors. And when RabbitMQ goes down and oslo.messaging fails over to alive hosts, we anyway have couple minutes messaging downtime at the moment, which disrupts almost all RPC calls. On the other side, disabling mirroring greatly reduces chances a RabbitMQ node goes down due to high load. > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20151202/405c2dd4/attachment.html>