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From Michelle Talley <talley.miche...@gmail.com>
Subject Configuration for distributed search
Date Wed, 01 Aug 2012 17:59:22 GMT
I am having a problem using the SOLR distributed search with version 3.6.0
and version 3.6.1.
I was able to recreate the distributed search example from this wiki:
http://wiki.apache.org/solr/DistributedSearch
and it worked great!

However, when I attempted to use my own schema in place of the one provided
with
the example, I ran into problems.  I did not change anything about the
configuration
except the schema.xml.  Specifically, for each shard, I deleted the
solr/data/index directory
and then replaced the example schema.xml with my own schema.xml in the
solr/conf
directory.  Then, I populated each shard with 1 document each.  I am able to
search each shard independently.  However, when I attempt to use the shards
parameter to initiate a distributed search, I get an error, which I have
included in this email.

I am also attaching my schema.xml and solrconfig.xml.  The solrconfig.xml
matches
exactly the solrconfig.xml that comes with the example.

This command to each shard returns one document from each shard.
curl 'http://localhost:8983/solr/select?debugQuery=true&indent=true&q=conway
'
curl 'http://localhost:7574/solr/select?debugQuery=true&indent=true&q=conway
'

This distributed search command returns 0 documents:
curl '
http://localhost:8983/solr/select?shards=localhost:8983/solr,localhost:7574/solr&indent=true&q=conway
'

The same distributed search command with debugQuery=true, returns an error.
curl '
http://localhost:8983/solr/select?shards=localhost:8983/solr,localhost:7574/solr&debugQuery=true&indent=true&q=conway
'

Error:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/>
<title>Error 500 null

java.lang.NullPointerException
        at
org.apache.solr.common.util.NamedList.nameValueMapToList(NamedList.java:110)
        at
org.apache.solr.common.util.NamedList.&lt;init&gt;(NamedList.java:75)
        at
org.apache.solr.common.util.SimpleOrderedMap.&lt;init&gt;(SimpleOrderedMap.java:58)
        at
org.apache.solr.handler.component.DebugComponent.finishStage(DebugComponent.java:130)
        at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:289)
        at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
        at org.apache.solr.core.SolrCore.execute(SolrCore.java:1376)
        at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:365)
        at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:260)
        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)
</title>
</head>
<body><h2>HTTP ERROR 500</h2>
<p>Problem accessing /solr/select. Reason:
<pre>    null

java.lang.NullPointerException
        at
org.apache.solr.common.util.NamedList.nameValueMapToList(NamedList.java:110)
        at
org.apache.solr.common.util.NamedList.&lt;init&gt;(NamedList.java:75)
        at
org.apache.solr.common.util.SimpleOrderedMap.&lt;init&gt;(SimpleOrderedMap.java:58)
        at
org.apache.solr.handler.component.DebugComponent.finishStage(DebugComponent.java:130)
        at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:289)
        at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
        at org.apache.solr.core.SolrCore.execute(SolrCore.java:1376)
        at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:365)
        at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:260)
        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)
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</body>
</html>

Any help or pointers with this issue would be greatly appreciated.

Thanks!
Michelle Talley

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