We have 1 collection with 4 doc types (attribute, state, event, process) and 14 relations between them, so a join concept makes no sense for us. I think the sch

We have 1 collection with 4 doc types (attribute, state, event, process) and 14 relations between them, so a join concept makes no sense for us. I think the schema is the key issue in having success vs not. (Apache Solr - billions of docs)