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Ray commented on SOLR-8291: --------------------------- I found the call stack is as following: at org.apache.solr.search.ExportQParserPlugin$ExportCollector.getLeafCollector(ExportQParserPlugin.java:140) at org.apache.solr.search.SolrIndexSearcher.sortDocSet(SolrIndexSearcher.java:2048) at org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1475) at org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:561) at org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:518) I added some debug log in ExportCollector and SolrIndexSearcher, please refer to attachment: here is the code fragment for org.apache.solr.search.SolrIndexSearcher.sortDocSet(QueryResult, QueryCommand) LeafCollector leafCollector = null; while (iter.hasNext()) { int doc = iter.nextDoc(); logger.info("Before getLeafCollector, doc={}, end={}, base={}, readerIndex={}", doc, end, base, readerIndex); while (doc>=end) { LeafReaderContext leaf = leafContexts.get(readerIndex++); base = leaf.docBase; end = base + leaf.reader().maxDoc(); leafCollector = topCollector.getLeafCollector(leaf); // we should never need to set the scorer given the settings for the collector } logger.info("After getLeafCollector doc={}, end={}, base={}, readerIndex={}, leafCollector={}", doc, end, base, readerIndex, leafCollector); leafCollector.collect(doc-base); } > Get NPE during calling export handler > ------------------------------------- > > Key: SOLR-8291 > URL: https://issues.apache.org/jira/browse/SOLR-8291 > Project: Solr > Issue Type: Bug > Components: SolrCloud > Affects Versions: 5.2.1 > Reporter: Ray > Attachments: solr.log > > > Get NPE during calling export handler, here is the stack trace: > at org.apache.lucene.util.BitSetIterator.<init>(BitSetIterator.java:58) > at > org.apache.solr.response.SortingResponseWriter.write(SortingResponseWriter.java:138) > at > org.apache.solr.response.QueryResponseWriterUtil.writeQueryResponse(QueryResponseWriterUtil.java:53) > at > org.apache.solr.servlet.HttpSolrCall.writeResponse(HttpSolrCall.java:727) > at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:459) > at > org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227) > at > org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:274) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:274) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) > at > org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:181) > at > org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.event(CatalinaContext.java:285) > at > org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.invoke(CatalinaContext.java:261) > at > org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:88) > at > org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:100) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:159) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) > at > org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) > at > org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) > at > org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.invoke(ActiveRequestResponseCacheValve.java:53) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362) > at > org.apache.coyote.ajp.AjpAprProcessor.process(AjpAprProcessor.java:489) > at > org.apache.coyote.ajp.AjpAprProtocol$AjpConnectionHandler.process(AjpAprProtocol.java:452) > at > org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:2019) > at java.lang.Thread.run(Thread.java:745) > It seems there are some FixedBitSet was set to null -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org