Hello, I think I'm done with code and tests. This feature allowsto join collections with multiple shards on both sides for the sake of scalability. It requires me to introduce AffinityPlacementPlugin.withCollectionShards where I feel much uncertainty and need good advice. https://issues.apache.org/jira/browse/SOLR-16717 https://github.com/apache/solr/pull/1550/
Thanks! -- Sincerely yours Mikhail Khludnev
