Nutch Hadoop 0.20 - Exception

[Eran Zinman]

Hi,

Just upgraded to the latest version of Nutch with Hadoop 0.20.

I'm getting the following exception in the namenode log and DFS doesn't
start:

2009-12-06 15:48:32,523 ERROR namenode.NameNode -
java.lang.SecurityException: sealing violation: can't seal package
org.mortbay.util: already loaded
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:235)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
    at
org.apache.hadoop.hdfs.server.namenode.NameNode.startHttpServer(NameNode.java:220)
    at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:202)
    at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:279)
    at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:956)
    at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:965)

Any help will be appreciated ... quite stuck with this.

Thanks,
Eran