Re: [netmod] Fwd: New Version Notification for draft-verdt-netmod-yang-versioning-reqs-01.txt

Ebben Aries <exa@juniper.net> Sat, 10 November 2018 03:45 UTC

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Date: Sat, 10 Nov 2018 09:49:44 +0700
From: Ebben Aries <exa@juniper.net>
To: Martin Bjorklund <mbj@tail-f.com>
CC: <jclarke@cisco.com>, <netmod-ver-dt@ietf.org>, <netmod@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netmod/SnZ3BiUpK1HWNgIzVo4qy7tQxo0>
Subject: Re: [netmod] Fwd: New Version Notification for draft-verdt-netmod-yang-versioning-reqs-01.txt
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On Nov 09 14:42 PM, Martin Bjorklund wrote:
> > The
> > point of requirement 1.4 was to say that the DT felt previous versions
> > of modules needed to support fixes without bringing in elements from head.
> 
> I think this means that you require branching.
> 
> But is this still the point of the "new 1.4" that was mentioned in the
> session?
> 
> However, as Rob Shakir mentioned in the session, there are other ways
> to do fixes / enhacements than branching a single module.  You can add
> new functionality with augment and make changes with deviations.
> 

So we could potentially result in a cleaner set of base model versioning
but augments and deviations that will need somewhat of it's own
branch versioning now.  I often find that consumers/clients make quite a
few assumptions and expectations when one supports model version X (w/o
the realization that it is X+/- for various reasons)

We'll have a namespace problem which will result in namespaces being
inserted (and removed at later dates) which ultimately has an impact on
clients

Possibly a better middle ground but think there are still considerations
here as well as to the overall impact of this approach

/ebben