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From Erick Erickson <erickerick...@gmail.com>
Subject Re: Distributed search has problems with some field names
Date Thu, 29 Sep 2011 14:10:34 GMT
I know I've seen other anomalies with odd characters
in field names. In general, it's much safer to use
only letters, numbers, and underscores. In fact, I
even prefer lowercase letters. Since you're pretty
sure those work, why not just use them?

Best
Erick

On Wed, Sep 28, 2011 at 6:59 AM, Luis Neves <luis.neves@gmail.com> wrote:
>
>
> Hello all,
>
> I'm experimenting with the "Distributed Search" bits in the nightly builds
> and I'm facing a problem.
>
> I have on my schema.xml some dynamic fields defined like this:
>
> <dynamicField name="$*" type="double" indexed="true" stored="true" />
> <dynamicField name="@*" type="string" indexed="true" stored="true"
> multiValued="true" />
> <dynamicField name="*" type="string" indexed="true" stored="true" />
>
>
> When hitting a single shard the following query works fine:
>
> http://<solr>/select?q=*:*&fl=ts,$distinct_boxes
>
> But when I add the "&distrib=true" parameter I get a NullPointerException:
>
>
> java.lang.NullPointerException
> at
> org.apache.solr.handler.component.QueryComponent.returnFields(QueryComponent.java:1025)
> at
> org.apache.solr.handler.component.QueryComponent.handleRegularResponses(QueryComponent.java:725)
> at
> org.apache.solr.handler.component.QueryComponent.handleResponses(QueryComponent.java:700)
> at
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:292)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:1451)
> at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:353)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:248)
> 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)
>
>
>
> The "$" in "$distinct_boxes" appears to be the culprit somehow, the query:
>
> <http://<solr>/select?q=*:*&fl=ts,distinct_boxes&distrib=true>
>
> works without errors, but of course doesn't retrieve the field I want.
>
> Funnily enough when requesting the uniqueKey field there are no errors:
>
> <http://<solr>/select?q=*:*&fl=tid,ts,$distinct_boxes&distrib=true>
>
> But somehow the data from the field "$distinct_boxes" doesn't appear in the
> output.
>
> Is there some workaround? Using "fl=*" returns all the data from the fields
> that start with "$" but it severely increases the size of the response.
>
>
> --
> Luis Neves
>
>
>
>

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