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https://issues.apache.org/jira/browse/SOLR-8291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009236#comment-15009236
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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
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