Hi,
I have problem with Stats component in shards environment. Solr throws Java.lang.NullPointerException when there is no results and statistic is computed over date field. <arr name="stats.field"> <str>price</str> <str>ddate</str> </arr> <str name="stats">true</str> <str name="q">*:*</str> <arr name="fq"> <str>date:[2013-03-23T00:00:00Z TO *]</str> <str>price:[5000 TO *]</str> </arr> <str name="rows">10</str> </lst> </lst> <lst name="error"> <str name="trace">java.lang.NullPointerException at org.apache.solr.handler.component.DateStatsValues.updateTypeSpecificStats(StatsValuesFactory.java:340) at org.apache.solr.handler.component.AbstractStatsValues.accumulate(StatsValuesFactory.java:106) at org.apache.solr.handler.component.StatsComponent.handleResponses(StatsComponent.java:112) at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:311) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1797) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:637) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:343) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:141) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1307) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:453) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:560) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) at org.eclipse.jetty.server.Server.handle(Server.java:365) at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485) at org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53) at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926) at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:635) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) 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:662) </str> <int name="code">500</int> </lst> </response> The same query without shards acts normally: <arr name="stats.field"> <str>price</str> <str>ddate</str> </arr> <str name="stats">true</str> <str name="q">*:*</str> <arr name="fq"> <str>ddate:[2013-03-23T00:00:00Z TO *]</str> <str>price:[5000 TO *]</str> </arr> <str name="rows">10</str> </lst> </lst> <lst name="grouped"> <lst name="id"> <int name="matches">0</int> <int name="ngroups">0</int> <arr name="groups"/> </lst> </lst> I've tested it on Solr 4.0 and then on Solr 4.2 and the problem still exists. Regards Agnieszka Kukałowicz