Actually, I got over this. I think, it was caused by my eclipse not refreshing.
Victor On 4/17/10 10:44 PM, "Victor Hong" <victor.h...@nokia.com> wrote: Hi I am trying to use Hbase client in Tomcat, and I have in my WebContent/WEB-INF/lib folder these files: Zookeeper-3.2.2.jar hadoop-0.20.2-core.jar hbase-0.20.3.jar hbase-default.xml hbase-site.xml But I am still getting this zookeeper Watcher class not found error, when calling HTable table = new HTable(config, className); No exception if only call config = new HBaseConfiguration(); and not call new Htable... Can anyone see what I need to do to fix this? Thanks, Victor org.jboss.resteasy.spi.UnhandledException: java.lang.NoClassDefFoundError: org/apache/zookeeper/Watcher org.jboss.resteasy.core.SynchronousDispatcher.handleApplicationException(SynchronousDispatcher.java:263) org.jboss.resteasy.core.SynchronousDispatcher.handleException(SynchronousDispatcher.java:169) org.jboss.resteasy.core.SynchronousDispatcher.handleInvokerException(SynchronousDispatcher.java:146) org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:456) org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:418) org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:111) org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:217) org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:159) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root cause java.lang.NoClassDefFoundError: org/apache/zookeeper/Watcher java.lang.ClassLoader.defineClass1(Native Method) java.lang.ClassLoader.defineClass(ClassLoader.java:698) java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1847) org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:890) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1354) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398) org.apache.hadoop.hbase.client.HConnectionManager.getClientZooKeeperWatcher(HConnectionManager.java:170) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getZooKeeperWrapper(HConnectionManager.java:932) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRootRegion(HConnectionManager.java:948) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:625) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:601) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:675) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:634) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:601) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:675) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:638) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:601) org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:128) org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:106) com.nokia.dataos.api.StoreImpl.get(StoreImpl.java:57) com.nokia.dataos.api.NodeResource.node(NodeResource.java:25) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:124) org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:247) org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:212) org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:202) org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:441) org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:418) org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:111) org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:217) org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:159) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root cause java.lang.ClassNotFoundException: org.apache.zookeeper.Watcher org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398) java.lang.ClassLoader.defineClass1(Native Method) java.lang.ClassLoader.defineClass(ClassLoader.java:698) java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1847) org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:890) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1354) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398) org.apache.hadoop.hbase.client.HConnectionManager.getClientZooKeeperWatcher(HConnectionManager.java:170) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getZooKeeperWrapper(HConnectionManager.java:932) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRootRegion(HConnectionManager.java:948) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:625) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:601) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:675) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:634) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:601) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:675) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:638) org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:601) org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:128) org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:106) com.nokia.dataos.api.StoreImpl.get(StoreImpl.java:57) com.nokia.dataos.api.NodeResource.node(NodeResource.java:25) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:597) org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:124) org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:247) org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:212) org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:202) org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:441) org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:418) org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:111) org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:217) org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:159) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.