RE: NPE when using facets with the MLT handler.

[Markus Jelsma <ma...@openindex.io>]

Hi, i don't think this is ever going to work with the MLT Handler, you should use the regular SearchHandler instead.
 
 
-----Original message-----
> From:SafeJava T <t...@safejava.com>
> Sent: Monday 30th June 2014 17:52
> To: solr-user@lucene.apache.org
> Subject: NPE when using facets with the MLT handler.
> 
> I am getting an NPE when using facets with the MLT handler.  I googled for
> other npe errors with facets, but this trace looked different from the ones
> I found. We are using Solr 4.9-SNAPSHOT.
> 
> I have reduced the query to the most basic form I can:
> 
> q=id:XXXXXXX&mlt.fl=mlt_field&facet=true&facet.field=id
> I changed it to facet on id, to ensure that the field was present in all
> results.
> 
> Any ideas on how to work around this?
> 
> 
> java.lang.NullPointerException at
> org.apache.solr.search.facet.SimpleFacets.addFacets(SimpleFacets.java:375)
> at
> org.apache.solr.handler.MoreLikeThisHandler.handleRequestBody(MoreLikeThisHandler.java:211)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:1955) at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:769)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:418)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:207)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
> at org.eclipse.jetty.server.Server.handle(Server.java:368) at
> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
> at
> org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:953)
> at
> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1014)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:861) at
> org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240) at
> org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
> at
> org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
> at java.lang.Thread.run(Thread.java:744)
> 
> Thanks,
> Tom
>