Dear all, I really enjoy using Solr so far. During the last days I tried to activate the ClusteringComponent in Solr as indicated here
http://wiki.apache.org/solr/ClusteringComponent and copied all the relevant java libraries in the WEB-INF/lib folder of my tomcat installation of Solr. But everytime I try to issue a request to my Solr server using http://localhost:9005/apache-solr-1.4.1/job0/select?q=*:*&fl=title,score,url&start=0&rows=100&indent=on&clustering=true I get the following error message: java.lang.NoClassDefFoundError: bak/pcj/set/IntSet at org.carrot2.text.preprocessing.PreprocessingPipeline.<init>(PreprocessingPipeline.java:47) at org.carrot2.clustering.lingo.LingoClusteringAlgorithm.<init>(LingoClusteringAlgorithm.java:108) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at java.lang.Class.newInstance0(Class.java:355) at java.lang.Class.newInstance(Class.java:308) at org.carrot2.util.pool.SoftUnboundedPool.borrowObject(SoftUnboundedPool.java:114) at org.carrot2.core.CachingController.borrowProcessingComponent(CachingController.java:329) Hence I have downloaded the corresponding pcj-1.2.jar providing the interface "bak.pcj.set.IntSet" and I have also put it in the WEB-INF/lib folder But I still keep getting this error message though the corresponding interface MUST be on the classpath now. Can anyone help me out with this one? I'm really eager to give this clustering extension a try from within Solr using the 1.4.1 version that I have already running on my server. Thanks for a brief feedback. Best regards, Patrick
