seems to happen when sort on anything besides strictly score, even score desc, num desc triggers it, using latest nightly and 10/14 patch
Problem accessing /solr/core1/select. Reason: 4731592 java.lang.ArrayIndexOutOfBoundsException: 4731592 at org.apache.lucene.search.FieldComparator$StringOrdValComparator.copy(FieldComparator.java:660) at org.apache.solr.search.NonAdjacentDocumentCollapser$DocumentComparator.compare(NonAdjacentDocumentCollapser.java:235) at org.apache.solr.search.NonAdjacentDocumentCollapser$DocumentPriorityQueue.lessThan(NonAdjacentDocumentCollapser.java:173) at org.apache.lucene.util.PriorityQueue.insertWithOverflow(PriorityQueue.java:158) at org.apache.solr.search.NonAdjacentDocumentCollapser.doCollapsing(NonAdjacentDocumentCollapser.java:95) at org.apache.solr.search.AbstractDocumentCollapser.collapse(AbstractDocumentCollapser.java:208) at org.apache.solr.handler.component.CollapseComponent.doProcess(CollapseComponent.java:98) at org.apache.solr.handler.component.CollapseComponent.process(CollapseComponent.java:66) at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:195) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131) at org.apache.solr.core.RequestHandlers$LazyRequestHandlerWrapper.handleRequest(RequestHandlers.java:233) at org.apache.solr.core.SolrCore.execute(SolrCore.java:1316) at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:338) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:241) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1148) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:387) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:539) 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:409) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:520)