Hello All! Well, side-effects (or any other effects) are quite obvious and predictable - this will decrease availability of RPC queues a bit. That's for sure.
However, Dmitry's guess is that the overall messaging backplane stability increase (RabitMQ won't fail too often in some cases) would compensate for this change. This issue is very much real - speaking of me I've seen an awful cluster's performance degradation when a failing RabbitMQ node was killed by some watchdog application (or even worse wasn't killed at all). One of these issues was quite recently, and I'd love to see them less frequently. That said I'm uncertain about the stability impact of this change, yet I see a reasoning worth discussing behind it. 2015-12-01 20:53 GMT+01:00 Sergii Golovatiuk <sgolovat...@mirantis.com>: > Hi, > > -1 for FFE for disabling HA for RPC queue as we do not know all side effects > in HA scenarios. > > On Tue, Dec 1, 2015 at 7:34 PM, Dmitry Mescheryakov > <dmescherya...@mirantis.com> wrote: >> >> Folks, >> >> I would like to request feature freeze exception for disabling HA for RPC >> queues in RabbitMQ [1]. >> >> As I already wrote in another thread [2], I've conducted tests which >> clearly show benefit we will get from that change. The change itself is a >> very small patch [3]. The only thing which I want to do before proposing to >> merge this change is to conduct destructive tests against it in order to >> make sure that we do not have a regression here. That should take just >> several days, so if there will be no other objections, we will be able to >> merge the change in a week or two timeframe. >> >> Thanks, >> >> Dmitry >> >> [1] https://review.openstack.org/247517 >> [2] >> http://lists.openstack.org/pipermail/openstack-dev/2015-December/081006.html >> [3] https://review.openstack.org/249180 >> >> __________________________________________________________________________ >> OpenStack Development Mailing List (not for usage questions) >> Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >> > > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > -- With best regards, Peter Lemenkov. __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
