[openstack-dev] [nova] [scheduler] [gantt] Please stop using "Gantt" for discussing about Nova scheduler

Dugger, Donald D donald.d.dugger at intel.com
Wed Apr 1 23:28:19 UTC 2015


I think there's a lot of `a rose by any other name would smell as sweet' going on here, we're really just arguing about how we label things.  I admit I use the term gantt as a very expansive, this is the effort to clean up the current scheduler and create a separate scheduler as a service project.  There should be no reason that this effort should turn off people, if you're interested in the scheduler then very quickly you will get pointed to gantt.

I'd like to hear what others think but I still don't see a need to change the name (but I'm willing to change if the majority thinks we should drop gantt for now).

--
Don Dugger
"Censeo Toto nos in Kansa esse decisse." - D. Gale
Ph: 303/443-3786

-----Original Message-----
From: Sylvain Bauza [mailto:sbauza at redhat.com] 
Sent: Tuesday, March 31, 2015 1:49 AM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [nova] [scheduler] [gantt] Please stop using "Gantt" for discussing about Nova scheduler


Le 31/03/2015 02:57, Dugger, Donald D a écrit :
> I actually prefer to use the term Gantt, it neatly encapsulates the discussions and it doesn't take much effort to realize that Gantt refers to the scheduler and, if you feel there is confusion, we can clarify things in the wiki page to emphasize the process: clean up the current scheduler interfaces and then split off the scheduler.  The end goal will be the Gantt scheduler and I'd prefer not to change the discussion.
>
> Bottom line is I don't see a need to drop the Gantt reference.

While I agree with you that *most* of the scheduler effort is to spin-off the scheduler as a dedicated repository whose codename is Gantt, there are some notes to do :
  1. not all the efforts are related to the split, some are only reducing the tech debt within Nova (eg. 
bp/detach-service-from-computenode has very little impact on the scheduler itself, but rather on what is passed to the scheduler as
resources) and may confuse people who could wonder why it is related to the split

2. We haven't yet agreed on a migration path for Gantt and what will become the existing nova-scheduler. I seriously doubt that the Nova community would accept to keep the existing nova-scheduler as a feature duplicate to the future Gantt codebase, but that has been not yet discussed and things can be less clear

3. Based on my experience, we are loosing contributors or people interested in the scheduler area because they just don't know that Gantt is actually at the moment the Nova scheduler.


I seriously don't think that if we decide to leave the Gantt codename unused while we're working on Nova, it won't seriously impact our capacity to propose an alternative based on a separate repository, ideally as a cross-project service. It will just translate the reality, ie. that Gantt is at the moment more an idea than a project.

-Sylvain



> --
> Don Dugger
> "Censeo Toto nos in Kansa esse decisse." - D. Gale
> Ph: 303/443-3786
>
> -----Original Message-----
> From: Sylvain Bauza [mailto:sbauza at redhat.com]
> Sent: Monday, March 30, 2015 8:17 AM
> To: OpenStack Development Mailing List (not for usage questions)
> Subject: [openstack-dev] [nova] [scheduler] [gantt] Please stop using 
> "Gantt" for discussing about Nova scheduler
>
> Hi,
>
> tl;dr: I used the [gantt] tag for this e-mail, but I would prefer if we could do this for the last time until we spin-off the project.
>
>    As it is confusing for many people to understand the difference in between the future Gantt project and the Nova scheduler effort we're doing, I'm proposing to stop using that name for all the efforts related to reducing the technical debt and splitting out the scheduler. That includes, not exhaustively, the topic name for our IRC weekly meetings on Tuesdays, any ML thread related to the Nova scheduler or any discussed related to the scheduler happening on IRC.
> Instead of using [gantt], please use [nova] [scheduler] tags.
>
> That said, any discussion related to the real future of a cross-project scheduler based on the existing Nova scheduler makes sense to be tagged as "Gantt", of course.
>
>
> -Sylvain
>
>
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