[oslo][release] Oslo's Transition To Independent
openstack at nemebean.com
Wed Nov 4 14:49:57 UTC 2020
On 11/4/20 7:31 AM, Herve Beraud wrote:
> Is it time for us to move some parts of Oslo to the independent release
> model ?
> I think we could consider Oslo world is mostly stable enough to answer
> yes to the previous question.
> However, the goal of this email is to trigger the debat and see which
> deliverables could be transitioned to the independent model.
> Do we need to expect that major changes will happen within Oslo and who
> could warrant to continue to follow cycle-with-intermediary model ?
I would hesitate to try to predict the future on what will see major
changes and what won't. I would prefer to look at this more from the
perspective of what Oslo libraries are tied to the OpenStack version.
For example, I don't think oslo.messaging should be moved to
independent. It's important that RPC has a sane version to version
upgrade path, and the easiest way to ensure that is to keep it on the
regular cycle release schedule. The same goes for other libraries too:
oslo.versionedobjects, oslo.policy, oslo.service, oslo.db, possibly also
things like oslo.config and oslo.context (I suspect contexts need to be
release-specific, but maybe someone from a consuming project can weigh
in). Even oslo.serialization could have upgrade impacts if it is being
used to serialize internal data in a service.
That said, many of the others can probably be moved. oslo.i18n and
oslo.upgradecheck are both pretty stable at this point and not really
tied to a specific release. As long as we're responsible with any future
changes to them it should be pretty safe to make them independent.
This does raise a question though: Are the benefits of going independent
with the release model sufficient to justify splitting the release
models of the Oslo projects? I assume the motivation is to avoid having
to do as many backports of bug fixes, but if we're mostly doing this
with low-volume, stable projects does it gain us that much?
I guess I don't have a strong opinion one way or another on this yet,
and would defer to our release liaisons if they want to go one way or
other other. Hopefully this provides some things to think about though.
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