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Re: [core] Advancing senml-versions

Thomas Fossati <Thomas.Fossati@arm.com> Mon, 23 March 2020 17:21 UTC

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From: Thomas Fossati <Thomas.Fossati@arm.com>
To: Carsten Bormann <cabo@tzi.org>
CC: "core@ietf.org WG" <core@ietf.org>, Thomas Fossati <Thomas.Fossati@arm.com>
Thread-Topic: [core] Advancing senml-versions
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Date: Mon, 23 Mar 2020 17:21:35 +0000
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Subject: Re: [core] Advancing senml-versions
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On 20/03/2020, 18:31, "Thomas Fossati" <Thomas.Fossati@arm.com> wrote:
> On 19/03/2020, 20:32, "Carsten Bormann" <cabo@tzi.org> wrote:
> > And Alissa has a point here, so we should take our liability to solve
> > that quite seriously.
>
> OK, I'll have a look at the document as well as to the IESG processing
> trail then.

I had a look at the IESG processing and refreshed my memory with both
documents.

A few thoughts:

* The bitmap versioning scheme looks like a sensible choice.

* The small code-point space might become a problem in the future, but
  I'm not in a position now to foretell the amount of pressure the
  registry would be under.  Therefore, I trust the designer(s) that the
  proposed mechanism provides adequate scalability and I am happy with
  the "10%" rule-of-thumb for the expert.

* senml-more-units seems to sport normative language (just a MAY, but a
  2119 MAY nevertheless), however senml-versions is only referenced
  Informatively.  Am I confused or that is actually a problem?

All that considered, I'd take Ari's suggestion a bit further and:
a) Adopt senml-versions;
b) Make it a *normative* reference of senml-more-units.

It looks to me that the problem has been sufficiently debated already
and the identified solution is compact and clear enough that we could
reasonably take the risk and put senml-versions on the fast track.

Otherwise, adopt senml-versions and change that senml-more-units "MAY"
into a "could"?

cheers, thanks!
--

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