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https://issues.apache.org/jira/browse/SOLR-5690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13889459#comment-13889459
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Elran Dvir commented on SOLR-5690:
----------------------------------
Patch resolving the issue is attached.
> Null pointerException in AbstractStatsValues.accumulate
> -------------------------------------------------------
>
> Key: SOLR-5690
> URL: https://issues.apache.org/jira/browse/SOLR-5690
> Project: Solr
> Issue Type: Bug
> Affects Versions: 5.0, 4.7
> Reporter: Elran Dvir
> Priority: Minor
> Attachments: SOLR-5690.patch
>
>
> It happens when there is a string field with docValues="true" and default="".
> Then, with documents that have empty string value in the field,
> values.exists(docID) is true but values.strVal(docID) is null, and it throws
> null pointer exception when trying to add the value to distinctValues set.
> the solr query is stats=true&stats.field=X&stats.calcdistinct=true
> stack trace:
> java.lang.NullPointerException at java.util.TreeMap.put(TreeMap.java:567) at
> java.util.TreeSet.add(TreeSet.java:266) at
> org.apache.solr.handler.component.AbstractStatsValues.accumulate(StatsValuesFactory.java:164)
> at
> org.apache.solr.handler.component.StringStatsValues.accumulate(StatsValuesFactory.java:535)
> at
> org.apache.solr.handler.component.SimpleStats.getFieldCacheStats(StatsComponent.java:274)
> at
> org.apache.solr.handler.component.SimpleStats.getStatsFields(StatsComponent.java:225)
> at
> org.apache.solr.handler.component.SimpleStats.getStatsCounts(StatsComponent.java:200)
> at
> org.apache.solr.handler.component.StatsComponent.process(StatsComponent.java:68)
> at
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:208)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:1904) at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:659)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:362)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:158)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1474)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499) at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
> at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
> at org.eclipse.jetty.server.Server.handle(Server.java:370) at
> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
> at
> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644) at
> org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) at
> org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
> at
> org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
> at java.lang.Thread.run(Thread.java:804)
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