Hello,
I have some unexpected behavior regarding the replica placement. I am using
solr 9.1.0
I start two nodes :
solr.cmd start -c
solr.cmd start -p 8984 -z localhost:9983
I add my replica policy:
curl -X POST -H 'Content-type: application/json' -d '{
"add":{
"name": ".placement-plugin",
"class":
"org.apache.solr.cluster.placement.plugins.AffinityPlacementFactory"
}}'
http://localhost:8983/api/cluster/plugin
I create a simple collection:
http://localhost:8983/solr/admin/collections?action=CREATE&name=products&replicationFactor=2&numShards=1&collection.configName=_default
My replica placement seems good:
[image: image.png]
But then I just start a 3rd node:
:solr.cmd start -p 8984 -z localhost:9983
And then my replica placement seems a bit strange:
[image: image.png]
How come all my replicas moved to the newly started node? Isn't the policy
supposed to make it best to avoid having more than one replica of the same
shard on the same node and to spread them?
Thanks for your insight!
Aurelien
