I've had a problem similar to this and it was because of the schema.xml. It was valid XML but there were some incorrect field definitions and/or the default field listed was not a defined field.
I'd suggest you start with the default schema and build on it piece by piece, each time testing for the error with a "ping" operation in the admin page. Kevin On 10/11/06, mark <[EMAIL PROTECTED]> wrote:
Hi, I have installed solr under a stand alone tomcat5.5 installation. I can see the admin screens etc. When I submit documents I get this error Oct 11, 2006 10:05:44 AM org.apache.solr.core.SolrException logSEVERE: java.lang.NullPointerException at org.apache.solr.update.DocumentBuilder.addField (DocumentBuilder.java:78) at org.apache.solr.update.DocumentBuilder.addField (DocumentBuilder.java:74) at org.apache.solr.core.SolrCore.readDoc(SolrCore.java:917) at org.apache.solr.core.SolrCore.update(SolrCore.java:685) at org.apache.solr.servlet.SolrUpdateServlet.doPost (SolrUpdateServlet.java:52) at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) ..... My docs follow this schema: <fields> <field name="id" type="string" indexed="false" stored="true"/> <field name="timestamp" type="string" indexed="true" stored="true"/> <field name="url" type="string" indexed="false" stored="true"/> <field name="collection" type="text_ws" indexed="true" stored="true"/> <field name="mimetype" type="string" indexed="true" stored="true"/> <field name="content" type="text" indexed="true" stored="false"/> </fields> Also - since getting this error I can no longer see part of the solr/ admin/stats.jsp screen - the boxes core, update , cache and other are now empty. I deleted and reinstalled solr (including the unpacked webapps dir) but not tomcat and the problem is still there.... cheers mark