[SOLR-3427] Faceting under some conditions throws NPE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0-ALPHA
• Fix Version/s: 4.0-ALPHA
• Component/s: SearchComponents - other
• Assignee: Unassigned
• Reporter: Jamie Johnson
• Created: 01/May/12 23:49
• Updated: 10/May/13 10:40
• Resolved: 02/May/12 18:25

Description

Under some circumstances faceting in Solr throws the following NPE

May 1, 2012 8:48:52 PM org.apache.solr.common.SolrException log
SEVERE: java.lang.NullPointerException
at org.apache.lucene.index.DocTermOrds.lookupTerm(DocTermOrds.java:807)
at org.apache.solr.request.UnInvertedField.getTermValue(UnInvertedField.java:636)
at org.apache.solr.request.UnInvertedField.getCounts(UnInvertedField.java:411)
at org.apache.solr.request.SimpleFacets.getTermCounts(SimpleFacets.java:300)
at org.apache.solr.request.SimpleFacets.getFacetFieldCounts(SimpleFacets.java:396)
at org.apache.solr.request.SimpleFacets.getFacetCounts(SimpleFacets.java:205)
at org.apache.solr.handler.component.FacetComponent.process(FacetComponent.java:81)
at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:204)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1550)
at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:442)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:263)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:484)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1065)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:413)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:999)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:351)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:454)
at org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:47)
at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:900)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:954)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:857)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:66)
at org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:254)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
at java.lang.Thread.run(Thread.java:662)

I've noticed this happening after doing deletes. When I've seen this issue before an optimize has made the issue go away. I believe this may also be related to the describe here:
http://stackoverflow.com/questions/10124055/solr-faceted-search-throws-nullpointerexception-with-http-500-status

I have been unable to reproduce this in a test but this has come up at least 3 times in our environments.

Issue Links

• is broken by: LUCENE-3003 Move UnInvertedField into Lucene core