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https://issues.apache.org/jira/browse/SOLR-8291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18119733#comment-18119733
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Nick Shanin commented on SOLR-8291:
-----------------------------------
PR #4953 addresses this failure together with SOLR-13217.
ExportWriter.SegmentIterator.topDocs() now treats a null per-leaf bitset as an
empty leaf while preserving the iterator's leaf-ordinal alignment, avoiding the
BitSetIterator NPE. This covers the useFilterForSortedQuery=true /export path
for SOLR-8291 and the collapse + /export path for SOLR-13217.
The fixed-seed TestExportWriter.testRandomNumerics run for related SOLR-17392
also passed. The same guard fixes the reproduced SOLR-16130 cross-collection
join path; that ticket is related coverage rather than a separate PR.
Tests:
:solr:core:test --tests
org.apache.solr.handler.export.TestExportWriterUseFilterForSortedQuery --tests
org.apache.solr.handler.export.TestExportWriter.testCollapseWithTrailingEmptyLeaf
Fixed-seed TestExportWriter.testRandomNumerics (SOLR-17392)
:solr:core:spotlessJavaCheck
PR: https://github.com/apache/solr/pull/4953
> NPE calling export handler when useFilterForSortedQuery=true
> ------------------------------------------------------------
>
> 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
> Priority: Major
> Labels: pull-request-available
> Attachments: SOLR-8291.patch, solr.log
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> *Updated*: The stacktrace below was created when the solrconfig.xml has the
> following element:
> {code}
> <useFilterForSortedQuery>true</useFilterForSortedQuery>
> {code}
> It was determined that useFilterForSortedQuery is incompatible with the
> /export handler.
> See the comments near the end of the ticket for a potential work around if
> this flag needs to be set.
> 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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