Right now we take a "name" parameter in the ADDREPLICA call. We use that as the core name for the replica. Are there any use cases where specifying the name of the core for the replica is useful?
Here are the disadvantages of doing so -
1. We don't verify if the name is unique in the collection. So if a conflicting name ends up in the same node then the call will fail.
2. If it core is created on some other node, it will fail with legacyCloud=false as that checks for uniqueness in core names.
https://cwiki.apache.org/confluence/display/solr/Collections+API#CollectionsAPI-api_addreplica - The ref guide has never documented the "name" parameter.