[openstack-dev] [CI] Try to introduce RFC mechanism to CI.

Jordan Pittier jordan.pittier at scality.com
Fri Oct 9 09:48:40 UTC 2015

On Fri, Oct 9, 2015 at 11:00 AM, Tang Chen <tangchen at cn.fujitsu.com> wrote:

> Hi,
> CI systems will run tests for each patch once it is submitted or modified.
> But most CI systems occupy a lot of resource, and take a long time to
> run tests (1 or 2 hours for one patch).
> I think, not all the patches submitted need to be tested. Even those
> patches
> with an approved BP and spec may be reworked for 20+ versions. So I think
> CI should support a RFC (Require For Comments) mechanism for developers
> to submit and review the code detail and rework. When the patches are
> fully ready, I mean all reviewers have agreed on the implementation detail,
> then CI will test the patches.

So have the humans do the hard work to eventually find out that the patch
breaks the world ?

> For a 20+ version patch-set, maybe 3 or 4 rounds
> of tests are enough. Just test the last 3 or 4 versions.
 How do know, when a new patchset arrives, that it's part of the last 3 or
4 versions ?

> This can significantly reduce CI overload.
> This workflow appears in many other OSS communities, such as Linux kernel,
> qemu and libvirt. Testers won't test patches with a [RFC] tag in the
> commit message.
> So I want to enable CI to support a similar mechanism.
> I'm not sure if it is a good idea. Please help to review the following BP.
> https://blueprints.launchpad.net/openstack-ci/+spec/ci-rfc-mechanism
> Thanks.
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I am running a 3rd party for Cinder. The amount of time to setup, operate
and watch after the CI results cost way more than the 1 or 2 servers it
take to run the jobs. So, I don"t want to be a party pooper here, but in my
opinion I am not sure it's worth the effort.

Note: I don"t know about nova or neutron.

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