Open Stack

++

On Wed, Nov 9, 2011 at 10:50 AM, Thierry Carrez <thierry at openstack.org> wrote:
> Hi everyone,
>
> Since there seems to be some confusion around master vs. stable/diablo
> vs. core reviewers, I think it warrants a small thread.
>
> When at the Design Summit we discussed setting up stable branches, I
> warned about the risks that setting them up brings for trunk development:
>
> 1) Reduce resources affected to trunk development
> 2) Reduce quality of trunk
>
> To mitigate that, we decided that the group doing stable branch
> maintenance would be a separate group (i.e. *not* core developers), and
> we decided that whatever ends up in the stable branch must first land in
> the master branch.
>
> So a change goes like this:
> * Change is proposed to trunk
> * Change is reviewed by core (is it appropriate, well-written, etc)
> * Change lands in trunk
> * Change is proposed to stable/diablo
> * Change is reviewed by stable team (is it relevant for a stable update,
> did it land in trunk first)
> * Change lands in stable/diablo
>
> This avoids the aforementioned risks, avoids duplicating review efforts
> (the two reviews actually check for different things), and keep the
> teams separate (so trunk reviews are not slowed down by stable reviews).
>
> Note that this does not prevent core developers that have an interest in
> stable/diablo from being in the two teams.
>
> Apparently people in core can easily mistake master for stable/diablo,
> and can also +2 stable/diablo changes. In order to avoid mistakes, I
> think +2 powers on stable/diablo should be limited to members of the
> stable maintenance team (who know their stable review policy).
>
> That should help avoid mistakes (like landing a fix in stable/diablo
> that never made it to master), while not preventing individual core devs
> from helping in stable reviews.
>
> Regards,
>
> --
> Thierry Carrez (ttx)
> Release Manager, OpenStack
>
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