I had some time to check this today and it's a documentation snafu. The correct key name is `collectionNodeType`.
- https://issues.apache.org/jira/browse/SOLR-16256 - https://github.com/apache/solr/pull/908 On Mon, Jun 13, 2022 at 6:58 PM Ixai Lanzagorta < ixai.lanzago...@rondhuit.com> wrote: > Hi, > > I'm trying the new Solr 9.x replication plugin, and I'm running into an > issue with the `nodeType` constraints. > In summary, I created a docker-compose file that has: > > - a zookeeper node > - two "alpha" Solr nodes (`-Dnode_type=alphaNode`) > - two "beta" Solr nodes (`-Dnode_type=betaNode`) > - one overseer Solr node (`-Dsolr.node.roles=data:off,overseer:preferred`, > exposes localhost:8983) > > Given a clean environment, I push the following plugin configuration: > > ```sh > http -j post :8983/api/cluster/plugin <<<' > { > "add": { > "name": ".placement-plugin", > "class": > "org.apache.solr.cluster.placement.plugins.AffinityPlacementFactory", > "config": { > "withCollection": { > "placeWithAlpha": "placeInAlpha", > "placeWithAlphaOrBeta": "placeInAlphaOrBeta" > }, > "nodeType": { > "placeInAlpha": "alphaNode", > "placeInAlphaOrBeta": "alphaNode,betaNode" > } > } > } > } > ' > ``` > > I then proceed to create a new collection > > ```sh > http -j post :8983/api/collections <<<' > { > "create": { > "name": "placeInAlpha", > "numShards": 1, > "replicationFactor": 1 > } > } > ' > ``` > > I would expect this collection to be placed exclusively in a node with > `node_type=alphaNode`. However, it's sometimes placed > in nodes with `node_type=betaNode`. I deleted it and recreated it several > times to verify, and I got a seemingly random placement. > > I wonder if my understanding of the documentation is wrong, or if there's > something I'm missing from my configuration? > Any help is appreciated. I'll continue playing with this and update the > thread if I find any additional information. > > Best, > Ixai > > P.S.: Before adding the `nodeType` constraint, I was successfully placing > replicas with only the `withCollection` constraint. > >
