Can I use SolrJ v4.7 with the latest 4.x Solr.war? Should I switch the writer from Javabin, back to XML to ensure compatibility? http://wiki.apache.org/solr/Solrj#SolrJ.2FSolr_cross-version_compatibility
I'm using CloudSolrServer. My client is running on Java6 so I can't go beyond 4.7.