I had similar classpath issues. Are there any versions of Hector in your classpath (in your Hadoop lib folder?) that are not the same as in your nutch deployment jar?
From: lewis john mcgibbney [mailto:[email protected]] Sent: Monday, August 29, 2011 1:57 PM To: [email protected] Subject: InvocationTargetException with Nutch 2.0 Gora 0.2 and Cassandra 0.8.4 Hi, I believe the following error can be attributed to the java compiler finding (or not finding) more than one version of me.prettyprint.hector.api.Serializer. Has anyone experienced this whilst getting the above (or similar) setup configured and running? lewis@lewis-01:~/ASF/trunk/runtime/local$ bin/nutch inject crawldb urls InjectorJob: starting InjectorJob: urlDir: crawldb InjectorJob: org.apache.gora.util.GoraException: java.lang.reflect.InvocationTargetException at org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:110) at org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:93) at org.apache.nutch.storage.StorageUtils.createWebStore(StorageUtils.java:59) at org.apache.nutch.crawl.InjectorJob.run(InjectorJob.java:243) at org.apache.nutch.crawl.InjectorJob.inject(InjectorJob.java:268) at org.apache.nutch.crawl.InjectorJob.run(InjectorJob.java:282) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) at org.apache.nutch.crawl.InjectorJob.main(InjectorJob.java:292) Caused by: java.lang.reflect.InvocationTargetException 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 org.apache.gora.util.ReflectionUtils.newInstance(ReflectionUtils.java:76) at org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:103) ... 7 more Caused by: java.lang.NoClassDefFoundError: me/prettyprint/hector/api/Serializer at org.apache.gora.cassandra.store.CassandraStore.<init>(CassandraStore.java:60) ... 13 more Caused by: java.lang.ClassNotFoundException: me.prettyprint.hector.api.Serializer at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) ... 14 more -- Lewis
