Re: [ovirt-devel] Creating a new gerrit flag

From: "David Caro" <dcaroest(a)redhat.com&gt; To: "Nir Soffer" <nsoffer(a)redhat.com&gt; Cc: "Eyal Edri" <eedri(a)redhat.com&gt;, "Oved Ourfali" <ovedo(a)redhat.com&gt;, "infra" <infra(a)ovirt.org&gt;, devel(a)ovirt.org Sent: Thursday, December 11, 2014 12:06:24 PM Subject: Re: [ovirt-devel] Creating a new gerrit flag On 12/11, Nir Soffer wrote: > ----- Original Message ----- > > From: "David Caro" <dcaroest(a)redhat.com&gt; > > To: "Nir Soffer" <nsoffer(a)redhat.com&gt; > > Cc: "Eyal Edri" <eedri(a)redhat.com&gt;, "Oved Ourfali" <ovedo(a)redhat.com&gt;, > > "infra" <infra(a)ovirt.org&gt;, devel(a)ovirt.org > > Sent: Wednesday, December 10, 2014 4:59:36 PM > > Subject: Re: [ovirt-devel] Creating a new gerrit flag > > > > On 12/10, Nir Soffer wrote: > > > > > > > > > ----- Original Message ----- > > > > From: "Eyal Edri" <eedri(a)redhat.com&gt; > > > > To: devel(a)ovirt.org > > > > Cc: "Oved Ourfali" <ovedo(a)redhat.com&gt;, "infra" <infra(a)ovirt.org&gt; > > > > Sent: Wednesday, December 10, 2014 10:40:47 AM > > > > Subject: Re: [ovirt-devel] Creating a new gerrit flag > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > From: "Oved Ourfali" <ovedo(a)redhat.com&gt; > > > > > To: "David Caro" <dcaroest(a)redhat.com&gt; > > > > > Cc: devel(a)ovirt.org > > > > > Sent: Wednesday, December 10, 2014 8:30:30 AM > > > > > Subject: Re: [ovirt-devel] Creating a new gerrit flag > > > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > > From: "David Caro" <dcaroest(a)redhat.com&gt; > > > > > > To: "Oved Ourfali" <ovedo(a)redhat.com&gt; > > > > > > Cc: devel(a)ovirt.org > > > > > > Sent: Tuesday, December 9, 2014 7:02:44 PM > > > > > > Subject: Re: [ovirt-devel] Creating a new gerrit flag > > > > > > > > > > > > On 12/09, Oved Ourfali wrote: > > > > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > > > > From: "David Caro" <dcaroest(a)redhat.com&gt; > > > > > > > > To: "Oved Ourfali" <ovedo(a)redhat.com&gt; > > > > > > > > Cc: "Sven Kieske" <s.kieske(a)mittwald.de&gt;, devel(a)ovirt.org > > > > > > > > Sent: Tuesday, December 9, 2014 3:40:30 PM > > > > > > > > Subject: Re: [ovirt-devel] Creating a new gerrit flag > > > > > > > > > > > > > > > > On 12/09, Oved Ourfali wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > > > > > > From: "Sven Kieske" <s.kieske(a)mittwald.de&gt; > > > > > > > > > > To: devel(a)ovirt.org > > > > > > > > > > Sent: Tuesday, December 9, 2014 3:21:43 PM > > > > > > > > > > Subject: Re: [ovirt-devel] Creating a new gerrit flag > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On 09/12/14 13:47, Oved Ourfali wrote: > > > > > > > > > > > safe up to 95% or so. > > > > > > > > > > > > > > > > > > > > You just made up that number. > > > > > > > > > > I don't really understand why you would want > > > > > > > > > > to downgrade your code quality by circumventing tests. > > > > > > > > > > > > > > > > > > > > Maybe someone can elaborate on this a bit? > > > > > > > > > > > > > > > > > > > > > > > > > > > > It doesn't downgrade the code quality. > > > > > > > > > It is just a way to ensure developers can both merge > > > > > > > > > changes, > > > > > > > > > and > > > > > > > > > do > > > > > > > > > it > > > > > > > > > as > > > > > > > > > safely as possible without relying on post-submit tools. > > > > > > > > > The number is indeed invented... as I don't have real > > > > > > > > > statistics, > > > > > > > > > but > > > > > > > > > it > > > > > > > > > comes to say that it would be safe most of the time. > > > > > > > > > After the patch is merged, if CI will fail, it is the > > > > > > > > > responsibility > > > > > > > > > of > > > > > > > > > the > > > > > > > > > developer to check that out and fix that. > > > > > > > > > > > > > > > > This thread was started to avoid getting to that point, as > > > > > > > > getting a > > > > > > > > failed patch inside the code means breaking all the other > > > > > > > > tests > > > > > > > > that > > > > > > > > run on top of it and that blocks all the development, not > > > > > > > > only > > > > > > > > that > > > > > > > > specific patch. > > > > > > > > > > > > > > > > > > > > > > The issue that started the discussion was an issue in which > > > > > > > there > > > > > > > was a > > > > > > > Tests "-1" flag, and it was ignored. > > > > > > > My suggestion will enforce that it won't be ignored. > > > > > > > In more rare cases, in which the rebase is the source of the > > > > > > > tests > > > > > > > issue, > > > > > > > then you'll find about it later. > > > > > > > > > > > > I started the discussion, and I started it because a developer > > > > > > complained about not being able to merge a patch because it was > > > > > > failing the tests due to an already merged patch that was making > > > > > > all > > > > > > the builds to fail. And was trying to get a solution to avoid > > > > > > getting > > > > > > to that point where a patch is merged while breaking the tests. > > > > > > > > > > > > > > > > > > So in summary, you are suggestion this: > > > > > > > > > > > > Creating a new flag 'tested' with values +1, 0 and -1 that only > > > > > > jenkins > > > > > > and managers can set > > > > > > > > > > > > Block form submitting any patches that have a -1 > > > > > > > > > > > > Carry the value of that flag to following patches only if the > > > > > > flag > > > > > > was > > > > > > -1 > > > > > > > > > > > > > > > > > > > +1, we need a way to block bad patches from being merged, even with a > > > > rebase > > > > in gerrit. > > > > going forward we're planning a few changes to the way jenkins jobs > > > > are > > > > run on > > > > ovirt ci, which will help > > > > reduce noise and imrove resources usages. > > > > > > > > 1. moving into a flow process, where critical jobs like unit > > > > tests/checkstyle > > > > will run first and only then other heavy jobs will run > > > > (integration/rpms/findbugs) > > > > > > This is already implemented in vdsm for few months - running "make > > > check" > > > will run the fast tests first and will not run the slower tests if a > > > fast > > > test > > > failed. > > > > Please change to be able to run only fast tests or only slow tests, > > that way we can separate the job into two and give feedback about the > > fast tests before the slows have finished running. > > These are the available targets (from faster to slower): > > - gitignore - check that certain files are ignored > > - pyflakes - check common Python errors (e.g. unused imports) > > - pep8 - style check > > - check - run the fast checks above and if successful, the unittests > > Environment variables: > > NOSE_SLOW_TESTS=1 - enable slow tests (we have only few) > NOSE_STRESS_TESTS=1 - enable stress tests (probably not useful for the > CI) > > Note that the environment variables are used only for the tests in > vdsm/tests there are few tests in various sub directories that do > not use the test infrastructure in vdsm/tests. > > - check-all - run make check enbaling both slow and stress tests > > Do you need a separate target for the unittests? I just want to be able to execute: > make fast-check for fast checks (you decide what are and what are not) > make slow-check for slow checks, non overlapping, meaning that if you want to runa ll the checks, you'll have to use fast and then slow. The idea is to generalize the interface we use for the tests between all the ovirt projects so from ci we don't have to go keeping specific scripts for each provect and for each project version. And be able to run the fast checks (on each patchset, merges included) and the slow ones (on each merge only) separated so we can give feedback faster and not start the slow ones. Then after that goes the building of the rpm, and then the functional tests. And last the release if relevant. On patch: fast_check

On merge: fast_check -> slow_check -> build -> functional_check -> release

That flow is generic for all the projects, so each project will have to implement the same interface to run each step (I don't really care if it's make fast-check or just a bash script that runs whatever you need underneath, the key is not having to specify any options if possible and running just one line, the same everywhere).

That simplifies a LOT the maintenance of the jenkins jobs, and allows to change the way checks are run bound to the version of the product.