java.lang.NullPointerException at org.apache.solr.handler.component.QueryComponent.mergeIds(QueryComponent.java:421)

[Eugene Dzhurinsky]

Hi there!

I am trying to test the distributed search on 2 servers. I've created simple
application which adds sample documents to 2 different solr servers (version 
1.3.0).

While it is possible to search for certain keyphrase on any of these servers,
I am getting weird error when trying to search on both of these servers (like
it was described at http://wiki.apache.org/solr/DistributedSearch)

HTTP ERROR: 500

null

java.lang.NullPointerException
        at 
org.apache.solr.handler.component.QueryComponent.mergeIds(QueryComponent.java:421)
        at 
org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:265)
        at 
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:264)
        at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131)
        at org.apache.solr.core.SolrCore.execute(SolrCore.java:1204)
        at 
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:303)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:232)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
        at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365)
        at 
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        at 
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at 
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
        at 
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:211)
        at 
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at 
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
        at org.mortbay.jetty.Server.handle(Server.java:285)
        at 
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:502)
        at 
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:821)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:513)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:208)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:378)
        at 
org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:226)
        at 
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)

These servers are using the same configuration. What may cause this error?

Thank you in advance.

-- 
Eugene N Dzhurinsky

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