[SOLR-5690] Null pointerException in AbstractStatsValues.accumulate

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 4.7, 6.0
• Fix Version/s: 4.7, 6.0
• Assignee: Shalin Shekhar Mangar
• Reporter: Elran Dvir
• Created: 03/Feb/14 13:11
• Updated: 09/May/16 18:56
• Resolved: 06/Feb/14 08:24

Description

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)

Issue Links

• is related to: SOLR-5428 new statistics results to StatsComponent - distinctValues and countDistinct