Shawn, I didn't sanitize the log other than the ec2 servername. The constructor is
ConcurrentUpdateSolrServer solrServer = new ConcurrentUpdateSolrServer(solrUrl, solrBufferCount, solrThreadCount); and I don't use setParser at all. But the SolrJ client is using apache-solr-core-3.6.1.jar and apache-solr-solrj-3.6.1.jar while the server is 4.2.1. Maybe I do need to use setParser? DK -- View this message in context: http://lucene.472066.n3.nabble.com/ConcurrentUpdateSolrServer-Missing-ContentType-error-on-SOLR-4-2-1-tp4061160p4061197.html Sent from the Solr - User mailing list archive at Nabble.com.