[SOLR-5515] NPE when getting stats on date field with empty result on solrcloud

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 4.5.1, 4.6
• Fix Version/s: 4.7, 6.0
• Component/s: SolrCloud
• Labels: datefield solrcloud stats statscomponent

Environment

ubuntu 13.04, java 1.7.0_45-b18

• Assignee: Shalin Shekhar Mangar
• Reporter: Alexander Sagen
• Created: 28/Nov/13 15:51
• Updated: 09/May/16 18:46
• Resolved: 30/Nov/13 13:29

Description

Steps to reproduce:
1. Download solr 4.6.0, unzip twice in different directories.
2. Start a two-shard cluster based on default example

dir1/example> java -Dbootstrap_confdir=./solr/collection1/conf -Dcollection.configName=myconf -DzkRun -DnumShards=2 -jar start.jar

dir2/example> java -Djetty.port=7574 -DzkHost=localhost:9983 -jar start.jar

3. Visit http://localhost:8983/solr/query?q=author:a&stats=true&stats.field=last_modified

This causes a nullpointer (given that the index is empty or the query returns 0 rows)

Stacktrace:

1111190 [qtp290025410-11] INFO  org.apache.solr.core.SolrCore  – [collection1] webapp=/solr path=/query params={stats.field=last_modified&stats=true&q=author:a} hits=0 status=500 QTime=8 
1111191 [qtp290025410-11] ERROR org.apache.solr.servlet.SolrDispatchFilter  – null:java.lang.NullPointerException
        at org.apache.solr.handler.component.DateStatsValues.updateTypeSpecificStats(StatsValuesFactory.java:409)
        at org.apache.solr.handler.component.AbstractStatsValues.accumulate(StatsValuesFactory.java:109)
        at org.apache.solr.handler.component.StatsComponent.handleResponses(StatsComponent.java:113)
        at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:311)
        at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
        at org.apache.solr.core.SolrCore.execute(SolrCore.java:1859)
        at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:710)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:413)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:197)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
        at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
        at org.eclipse.jetty.server.Server.handle(Server.java:368)
        at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
        at org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
        at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:942)
        at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1004)
        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
        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:744)