Hi Robert, I am not sure what is implied by asymmetric clusters.
The main difference I see between the Conceptual Data Tree and federation is that the CDT presents identical information to all nodes connected (which I understand can be geographically distributed). In federation, we were thinking about a concept that would allow more loose coupling / information exchange (and hence consistence) as well as have transformation in place so that information seen on one site could be slightly different that the corresponding information on other sites. A concrete case would be ID transformation of elements in one ODL cluster in order to import them into another ODL cluster with an independent ID space. For example, Neutron network ID's on different sites coming from different Neutron servers would need to be transformed when we want the different ODL (clusters) to be able to exchange information about these networks and have them function as one network. At the moment we are assuming a single administrative domain. Having said that, passwords in different systems could be different (e.g. in the absence of a single sign on solution). If we can make the CDT work for the above kind of federation scenarios that would be great. I would really like to learn more / participate in the discussions on the topic. Best regards, Gidi -----Original Message----- From: Robert Varga [mailto:n...@hq.sk] Sent: Tuesday, 2 August 2016 11:32 To: Kaempfer, Gideon <g...@hpe.com>; Ashutosh Bisht <ashutosh.bi...@ericsson.com>; Muthukumaran K <muthukumara...@ericsson.com> Cc: netvirt-...@lists.opendaylight.org; controller-dev@lists.opendaylight.org; Noy, Ariel <ariel....@hpe.com>; mdsal-...@lists.opendaylight.org Subject: Re: [mdsal-dev] Serialize/Deserialize DTOs to JSON On 08/01/2016 04:52 PM, Kaempfer, Gideon wrote: > The scaling requirements will differ from application to application. We > strive to implement a federation service which will just enable such a scale > out approach, and in particular where geographic distribution is required. Hello Gidi, geographic distribution should be possible with the Conceptual Data Tree, as is asymmetric clusters. When you talk about federation, two properties come to mind: - is this coupled with loose consistence (when observed from non-owner member)? - does this include exchanging data between different administrative domains? Thanks, Robert _______________________________________________ controller-dev mailing list controller-dev@lists.opendaylight.org https://lists.opendaylight.org/mailman/listinfo/controller-dev
