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https://issues.apache.org/jira/browse/SOLR-8291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15007141#comment-15007141
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Joel Bernstein commented on SOLR-8291:
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Is the log level set to INFO? If it is then there is all kinds of useful
information about what's occurring on the server, particularly during indexing.
So the chain of events:
1) Index data.
2) Cleanup the index. Does this mean delete all data?
3) Index data again.
4) Then the NPE occurs.
Are you querying and indexing at the same time when the NPE occurs?
Or does the NPE occur when indexing has stopped, or both?
Does this reproduce 100% of the time for you?
> 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
>
> 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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