On Thu, Jun 7, 2018 at 2:49 PM, Faseela K <faseel...@ericsson.com> wrote:
> Tom, > > Currently we have certain cases, where we use EOS to ensure that we > process a set of northbound+southbound events on same node. > > (I am not sure whether that is the actual purpose of EOS, but we use it > like that as well. ;)) > > This has certain issues that in a 3 node cluster, your entity owner > might be node2, but the datastores you are writing to as a result of the > event has a leader on node1, and the writes will end up being slow. So if I > have a mechanism to force default-operational shard DTCNs to be processed > on the leader of default-config-shard(if my writes as a result of the > notifications is going to be config shard writes), I would like to use > that.(I am not sure whether I made it clear, we can discuss this in our > next genius meeting as well. I can point you to some usages in genius.) > > Thanks, > > Faseela > You can use a DataTreeChangeListener rather than a ClusteredDataTreeChangeListener. The former is only notified on the shard leader and thus only one in the cluster. > > > *From:* Tom Pantelis [mailto:tompante...@gmail.com] > *Sent:* Friday, June 08, 2018 12:13 AM > *To:* Faseela K <faseel...@ericsson.com> > *Cc:* Michael Vorburger <vorbur...@redhat.com>; infrautils-dev@lists. > opendaylight.org; controller-dev <controller-dev@lists.opendaylight.org>; > genius-...@lists.opendaylight.org; Robert Varga <n...@hq.sk> > > *Subject:* Re: [infrautils-dev] [controller-dev] OK to resurrect c/64522 > to first move infrautils.DiagStatus integration for datastore from genius > to controller, and then improve it for GENIUS-138 ? > > > > > > > > On Thu, Jun 7, 2018 at 2:39 PM, Faseela K <faseel...@ericsson.com> wrote: > > Not related in this context, but if we can get shard leader change > notification, can we use that to derive an entity owner instead of using > EOS? ;) > > > > Not exactly sure what you mean but shards and EOS are 2 different > concepts... > > > > >
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