NullPointerException with distributed facets

[Phil Hoy <ph...@friendsreunited.co.uk>]

Hi,

When doing a distributed query in solr 4.0 (4.0.0.2011.06.25.15.36.22) with facet.missing=true and facet.limit=20 I get a NullPointerException. By increasing the facet limit to 200 or setting facet missing to false it seems to fix it. The shards both contain the field but one shard always has a value and one never has a value. Single shard queries work fine on each shard. Does anyone know the cause or a fix?

java.lang.NullPointerException
	at org.apache.solr.handler.component.FacetComponent.refineFacets(FacetComponent.java:489)
	at org.apache.solr.handler.component.FacetComponent.handleResponses(FacetComponent.java:278)
	at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:292)
	at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
	at org.apache.solr.core.SolrCore.execute(SolrCore.java:1452)
	at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:353)
	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:248)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
	at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:326)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:926)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

Phil