Re: [netmod] [Teas] Key collision between configured and ephemeral list entries
tom petch <ietfc@btconnect.com> Wed, 12 June 2019 09:39 UTC
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From: tom petch <ietfc@btconnect.com>
To: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>, Italo Busi <Italo.Busi@huawei.com>
CC: "netmod@ietf.org" <netmod@ietf.org>, Tarek Saad <tsaad.net@gmail.com>, "teas@ietf.org" <teas@ietf.org>
Thread-Topic: [netmod] [Teas] Key collision between configured and ephemeral list entries
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Date: Wed, 12 Jun 2019 09:39:32 +0000
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Subject: Re: [netmod] [Teas] Key collision between configured and ephemeral list entries
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----- Original Message ----- From: "Juergen Schoenwaelder" <j.schoenwaelder@jacobs-university.de> Sent: Tuesday, June 11, 2019 7:36 PM > On Tue, Jun 11, 2019 at 05:43:27PM +0000, Italo Busi wrote: > > > [Italo Busi] If the client knows the prefix used by the server, it > > can pick up a different prefix and use it to tag its own entries. I > > think this rule is not really complex and it seems much simpler than > > managing unintended name clashes > > A prefix only helps a little. Once you have multiple clients creating > entries, you will have to handle collisions again. Sometimes solving > the more general case leads to solutions that also work nicely in > simpler special cases. Picking up on the point earlier about needing a rule about what to do when a collision occurs, the collision only occurs when the second (or third?) entry is created and AFAICT that is unpredictable, the configuration may occur first or the ephemeral one. If the rule is that one or the other datastore takes precedence, then you have a name which changes its meaning at this point, which seems undesirable. Hence, the only rule I can see being acceptable is that the first one wins, regardless of which it is, and the second and subsequent are rejected as invalid. But then you cannot rely on the prefix telling you where the name came from - of course, YANG origin will still be accurate. Tom Petch > /js > > -- > Juergen Schoenwaelder Jacobs University Bremen gGmbH > Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany > Fax: +49 421 200 3103 <https://www.jacobs-university.de/> > > _______________________________________________ > netmod mailing list > netmod@ietf.org > https://www.ietf.org/mailman/listinfo/netmod
- [netmod] Key collision between configured and eph… Italo Busi
- Re: [netmod] Key collision between configured and… Italo Busi
- Re: [netmod] Key collision between configured and… tom petch
- Re: [netmod] Key collision between configured and… tom petch
- Re: [netmod] Key collision between configured and… Rob Wilton (rwilton)
- Re: [netmod] [Teas] Key collision between configu… Tarek Saad
- Re: [netmod] [Teas] Key collision between configu… Italo Busi
- Re: [netmod] [Teas] Key collision between configu… tom petch
- Re: [netmod] [Teas] Key collision between configu… Italo Busi
- Re: [netmod] [Teas] Key collision between configu… Andy Bierman
- Re: [netmod] [Teas] Key collision between configu… Juergen Schoenwaelder
- Re: [netmod] [Teas] Key collision between configu… Italo Busi
- Re: [netmod] [Teas] Key collision between configu… Juergen Schoenwaelder
- Re: [netmod] [Teas] Key collision between configu… Italo Busi
- Re: [netmod] [Teas] Key collision between configu… Juergen Schoenwaelder
- Re: [netmod] [Teas] Key collision between configu… tom petch
- Re: [netmod] [Teas] Key collision between configu… Italo Busi
- Re: [netmod] [Teas] Key collision between configu… Qin Wu
- Re: [netmod] [Teas] Key collision between configu… Rob Wilton (rwilton)
- Re: [netmod] [Teas] Key collision between configu… Italo Busi
- Re: [netmod] [Teas] Key collision between configu… Italo Busi
- Re: [netmod] [Teas] Key collision between configu… Rob Wilton (rwilton)