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