java.lang.NullPointerException withs stats component and shards

[Agnieszka Kukałowicz <ag...@usable.pl>]

Hi,



I have problem with Stats component  in shards environment.



Solr throws Java.lang.NullPointerException when there is no results  and
statistic is computed over date field.



    <arr name="stats.field">

      <str>price</str>

      <str>ddate</str>

    </arr>

    <str name="stats">true</str>

    <str name="q">*:*</str>

    <arr name="fq">

      <str>date:[2013-03-23T00:00:00Z TO *]</str>

      <str>price:[5000 TO *]</str>

    </arr>

    <str name="rows">10</str>

 </lst>

</lst>

<lst name="error">

  <str name="trace">java.lang.NullPointerException

        at
org.apache.solr.handler.component.DateStatsValues.updateTypeSpecificStats(StatsValuesFactory.java:340)

        at
org.apache.solr.handler.component.AbstractStatsValues.accumulate(StatsValuesFactory.java:106)

        at
org.apache.solr.handler.component.StatsComponent.handleResponses(StatsComponent.java:112)

        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:1797)

        at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:637)

        at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:343)

        at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:141)

        at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1307)

        at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:453)

        at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)

        at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:560)

        at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)

        at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072)

        at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382)

        at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)

        at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006)

        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:365)

        at
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485)

        at
org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)

        at
org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926)

        at
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988)

        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:635)

        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:662)

</str>

  <int name="code">500</int>

</lst>

</response>





The same query without shards acts normally:



    <arr name="stats.field">

      <str>price</str>

      <str>ddate</str>

    </arr>

    <str name="stats">true</str>

    <str name="q">*:*</str>

    <arr name="fq">

      <str>ddate:[2013-03-23T00:00:00Z TO *]</str>

      <str>price:[5000 TO *]</str>

    </arr>

    <str name="rows">10</str>

  </lst>

</lst>

<lst name="grouped">

  <lst name="id">

    <int name="matches">0</int>

    <int name="ngroups">0</int>

    <arr name="groups"/>

  </lst>

</lst>



I've tested it on Solr 4.0 and then on Solr 4.2 and  the problem still
exists.



Regards

Agnieszka Kukałowicz