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From "Massimo Schiavon (JIRA)" <j...@apache.org>
Subject [jira] Created: (SOLR-2270) NPE reported from QueryComponent.mergeIds with field collapse
Date Tue, 07 Dec 2010 11:44:09 GMT
NPE reported from QueryComponent.mergeIds with field collapse
-------------------------------------------------------------

                 Key: SOLR-2270
                 URL: https://issues.apache.org/jira/browse/SOLR-2270
             Project: Solr
          Issue Type: Bug
    Affects Versions: 4.0
         Environment: 2 cores with a shard in the same solr instance configured in distributed
mode using zookeeper integration.
            Reporter: Massimo Schiavon


This is the request:
http://***:8983/solr/1/select/?q=apache&distrib=true&group=true&group.field=site

and the exception stacktrace:
java.lang.NullPointerException
    at org.apache.solr.handler.component.QueryComponent.mergeIds(QueryComponent.java:665)
    at org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:560)
    at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:326)
    at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131)
    at org.apache.solr.core.SolrCore.execute(SolrCore.java:1359)
    at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:337)
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:240)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
    at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
    at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

this request works correctly:
http://***:8983/solr/1/select/?q=apache&distrib=true&group=true&group.field=site&group.main=true

I give a look at the code of QueryComponent.mergeIds(ResponseBuilder, ShardRequest)

[...]
SolrDocumentList docs = (SolrDocumentList)srsp.getSolrResponse().getResponse().get("response");
[...]

response for queries with field collapse are in a completely different format

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