Open Stack

Excerpts from Henry Gessau's message of 2016-02-17 11:00:53 -0500:
> Doug Hellmann <doug at doughellmann.com> wrote:
> > Excerpts from Morgan Fainberg's message of 2016-02-17 07:10:34 -0800:
> >> On Wed, Feb 17, 2016 at 5:55 AM, Sean Dague <sean at dague.net> wrote:
> >>
> >>> On 02/17/2016 08:42 AM, Doug Hellmann wrote:
> >>>> Excerpts from Victor Stinner's message of 2016-02-17 14:14:18 +0100:
> >>>>> Le 17/02/2016 13:43, Henry Gessau a écrit :
> >>>>>> And it looks like eventlet 0.18.3 breaks neutron:
> >>>>>> https://bugs.launchpad.net/neutron/+bug/1546506
> >>>>>
> >>>>> 2 releases, 2 regressions in OpenStack. Should we cap eventlet version?
> >>>>> The requirement bot can produce patches to update eventlet, patches
> >>>>> which would run integration tests using Nova, Keystone, Neutron on the
> >>>>> new eventlet version.
> >>>>>
> >>>>> eventlet 0.18.2 broke OpenStack Keystone and OpenStack Nova
> >>>>> https://github.com/eventlet/eventlet/issues/296
> >>>>> https://github.com/eventlet/eventlet/issues/299
> >>>>> https://review.openstack.org/#/c/278147/
> >>>>> https://bugs.launchpad.net/nova/+bug/1544801
> >>>>>
> >>>>> eventlet 0.18.3 broke OpenStack Neutron
> >>>>> https://github.com/eventlet/eventlet/issues/301
> >>>>> https://bugs.launchpad.net/neutron/+bug/1546506
> >>>>>
> >>>>> FYI eventlet 0.18.0 broke WSGI servers:
> >>>>> https://github.com/eventlet/eventlet/issues/295
> >>>>>
> >>>>> It was followed quickly by eventlet 0.18.2 to fix this issue.
> >>>>>
> >>>>> Sadly, it looks like bugfix releases of eventlet don't include a single
> >>>>> bugfix, but include also other changes. For example, 0.18.3 fixed the
> >>>>> bug #296 but introduced "wsgi: TCP_NODELAY enabled by default"
> >>> optimization.
> >>>>>
> >>>>> IMHO the problem is not the release manager of eventlet, but more the
> >>>>> lack of tests on eventlet, especially on OpenStack services.
> >>>>>
> >>>>> Current "Continious Delivery"-like with gates do detect bugs, yeah, but
> >>>>> also block a lot of developers when the gates are broken. It doesn't
> >>>>> seem trivial to investigate and fix eventlet issues.
> >>>>>
> >>>>> Victor
> >>>>>
> >>>>
> >>>> Whether we cap or not, we should exclude the known broken versions.
> >>>> It looks like getting back to a good version will also require
> >>>> lowering the minimum version we support, since we have >=0.18.2
> >>>> now.
> >>>>
> >>>> What was the last version of eventlet known to work?
> >>>
> >>> 0.18.2 works. On the Nova side we had a failure around unit tests which
> >>> was quite synthetic that we fixed. I don' know what the keystone issue
> >>> turned out to be.
> >>>
> >>
> >> I believe the keystone issue was a test specific issue, not a runtime
> >> issue. We disabled the test.
> >> --Morgan
> > 
> > OK. Can someone from the neutron team verify that 0.18.2 works? If so,
> > we can just exclude 0.18.3 and reset the constraint.
> 
> I can confirm that neutron works with 0.18.2 as far as we know.
> 

Great. If you (or someone else) wants to submit a requirements update, I
can approve it. Ping me in #openstack-release.

Doug