On 6/25/2013 6:15 PM, Jack Krupansky wrote: > Are you using Tomcat? > > See: > http://wiki.apache.org/solr/SolrTomcat#Enabling_Longer_Query_Requests > > Enabling Longer Query Requests > > If you try to submit too long a GET query to Solr, then Tomcat will > reject your HTTP request on the grounds that the HTTP header is too > large; symptoms may include an HTTP 400 Bad Request error or (if you > execute the query in a web browser) a blank browser window. > > If you need to enable longer queries, you can set the maxHttpHeaderSize > attribute on the HTTP Connector element in your server.xml file. The > default value is 4K. (See > http://tomcat.apache.org/tomcat-5.5-doc/config/http.html)
Even better would be to force SolrJ to use a POST request. In newer versions (4.1 and later) Solr sets the servlet container's POST buffer size and defaults it to 2MB. In older versions, you'd have to adjust this in your servlet container config, but the default should be considerably larger than the header buffer used for GET requests. I thought that SolrJ used POST by default, but after looking at the code, it seems that I was wrong. Here's how to send a POST query: response = server.query(query, METHOD.POST); The import required for this is: import org.apache.solr.client.solrj.SolrRequest.METHOD; Gary, if you can avoid it, you should not be creating a new HttpSolrServer object every time you make a query. It is completely thread-safe, so create a singleton and use it for all queries against the medline core. Thanks, Shawn
