StreamingUpdateSolrServer already has multiple threads and uses multiple connections under the covers. At least the api says ' Uses an internal MultiThreadedHttpConnectionManager to manage http connections'. The constructor allows you to specify the number of threads used, http://lucene.apache.org/solr/api/org/apache/solr/client/solrj/impl/StreamingUpdateSolrServer.html#StreamingUpdateSolrServer(java.lang.String, int, int) .
-Kallin Nagelberg -----Original Message----- From: Chris Hostetter [mailto:hossman_luc...@fucit.org] Sent: Thursday, May 20, 2010 3:14 PM To: solr-user@lucene.apache.org Subject: Re: Machine utilization while indexing I'm really only guessing here, but based on your description of what you are doing it sounds like you only have one thread streaming documents to solr (via a single StreamingUpdateSolrServer instance which creates a single HTTP connection) Have you at all attempted to have parallel threads in your client initiate parallel connections to Solr via multiple instances of StreamingUpdateSolrServer objects?) -Hoss
