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.br...@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 >
