I have heard a rumor: ""solr-alfresco" is a technical query language - it is not officially supported. Only "fts-alfresco" and "cmis-alfresco" are supported and recommended. I.e. "fts-alfresco" is the high-level language, and depending on query and system configuration, can use either "solr-alfresco" or "db-afts"."
But our complex system rely on "solr-alfresco" query language, could you tell me does it for long life or not? The query languages in Alfresco work very different , the "fts-alfresco", "cmis-alfresco", "solr-cmis" are hit the limit 1000 max (limit could be overridden in properties) and do not allow to get more than limit even using a pagination. The "solr-alfresco" , "solr-fts-alfresco" - allow us to get all documents using the pagination