lucene-solr-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From James Brady <james.colin.br...@gmail.com>
Subject Re: ClassCastException from custom request handler
Date Mon, 03 Aug 2009 17:21:26 GMT
Hi,
Thanks for your suggestions!

I'm sure I have the class name right - changing it to something patently
incorrect results in the expected
"org.apache.solr.common.SolrException: Error loading class ...", rather than
the ClassCastException.

I did have some problems getting my class on the app server's classpath. I'm
running with solr.home set to "multicore", but creating a multicore/lib
directory and putting my request handler class in there resulted in "Error
loading class" errors.

I found that setting jetty.class.path to include multicore/lib (and also
explicitly point at Solr's core and common JARs) fixed the "Error loading
class" errors, leaving these ClassCastExceptions...

2009/8/3 Avlesh Singh <avlesh@gmail.com>

> Can you cross check the class attribute for your handler in solrconfig.xml?
> My guess is that it is specified as "solr.LiveCoresHandler". It should be
> fully qualified class name - com.foo.path.to.LiveCoresHandler instead.
>
> Moreover, I am damn sure that you did not forget to drop your jar into
> solr.home/lib. Checking once again might not be a bad idea :)
>
> Cheers
> Avlesh
>
> On Mon, Aug 3, 2009 at 9:11 PM, James Brady <james.colin.brady@gmail.com
> >wrote:
>
> > Hi,
> > I'm creating a custom request handler to return a list of live cores in
> > Solr.
> >
> > On startup, I get this exception for each core:
> >
> > Jul 31, 2009 5:20:39 PM org.apache.solr.common. SolrException log
> > SEVERE: java.lang.ClassCastException: LiveCoresHandler
> >        at
> > org.apache.solr.core.RequestHandlers$1.create(RequestHandlers.java:152)
> >        at
> > org.apache.solr.core.RequestHandlers$1.create(RequestHandlers.java:161)
> >        at
> >
> >
> org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:140)
> >        at
> >
> >
> org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:169)
> >        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:444)
> >
> > I've tried a few variations on the class definition, including extending
> > RequestHandlerBase (as suggested here:
> >
> >
> http://wiki.apache.org/solr/SolrRequestHandler#head-1de7365d7ecf2eac079c5f8b92ee9af712ed75c2
> > )
> > and implementing SolrRequestHandler directly.
> >
> > I'm sure that the Solr libraries I built against and those I'm running on
> > are the same version too, as I unzipped the Solr war file and copies the
> > relevant jars out of there to build against.
> >
> > Any ideas on what could be causing the ClassCastException? I've attached
> a
> > debugger to the running Solr process but it didn't shed any light on the
> > issue...
> >
> > Thanks!
> > James
> >
>



-- 
http://twitter.com/goodgravy
512 300 4210
http://webmynd.com/
Sent from Bury, United Kingdom

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message