Actually, it's obvious that the second case wouldn't work after looking at SimpleHttpConnectionManager. So my question boils down to being able to use a single CommonsHttpSolrServer in a multithreaded fashion.
danben wrote: > > I have a running Solr (1.3) server that I want to query with SolrJ, and > I'm running a benchmark that uses a pool of 10 threads to issue 1000 > random queries to the server. Each query executes 7 searches in parallel. > > My first attempt was to use a single instance of CommonsHttpSolrServer, > using the default MultiThreadedHttpConnectionManager, but (as mentioned in > SOLR-861), I quickly ran out of memory as every created thread blocked > indefinitely on MultiThreadedHttpConnectionManager. > > Then I tried creating a pool of CommonsHttpSolrServer in which each > SolrServer receives a newly-instantiated SimpleHttpConnectionManager, but > execution of my test resulted in the following: > > Caused by: java.lang.IllegalStateException: Unexpected release of an > unknown connection. > at > org.apache.commons.httpclient.SimpleHttpConnectionManager.releaseConnection(SimpleHttpConnectionManager.java:225) > at > org.apache.commons.httpclient.HttpConnection.releaseConnection(HttpConnection.java:1179) > at > org.apache.commons.httpclient.HttpMethodBase.ensureConnectionRelease(HttpMethodBase.java:2430) > at > org.apache.commons.httpclient.HttpMethodBase.releaseConnection(HttpMethodBase.java:1186) > at > org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:394) > > Looking into the httpclient code, I can see that this exception is only > thrown when the connection manager attempts to release an HttpConnection > that it is not currently referencing, but since I instantiate connection > managers on a per-thread basis I'm not sure what would cause that. > > I assume that SolrJ must be used by someone to execute parallel queries; > is there something obvious (or not) that I'm missing? > -- View this message in context: http://www.nabble.com/Problems-Issuing-Parallel-Queries-with-SolrJ-tp24522927p24522973.html Sent from the Solr - User mailing list archive at Nabble.com.
