I think the jar have some issuses where its not able to read the Main class from manifest . try unjar the jar and see in Manifest.xml what is the main class and then run as follows
bin/hadoop jar hadoop-*-examples.jar <Full qualified main class> grep input output 'dfs[a-z.]+' On Thu, Jun 16, 2011 at 10:23 AM, Drew Gross <[email protected]> wrote: > Hello, > > I'm trying to run the example from the quick start guide on Windows and I > get this error: > > $ bin/hadoop jar hadoop-*-examples.jar grep input output 'dfs[a-z.]+' > Exception in thread "main" java.lang.NoClassDefFoundError: > Caused by: java.lang.ClassNotFoundException: > at java.net.URLClassLoader$1.run(URLClassLoader.java:202) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:190) > at java.lang.ClassLoader.loadClass(ClassLoader.java:306) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) > at java.lang.ClassLoader.loadClass(ClassLoader.java:247) > Could not find the main class: . Program will exit. > Exception in thread "main" java.lang.NoClassDefFoundError: > Gross\Documents\Projects\discom\hadoop-0/21/0\logs > Caused by: java.lang.ClassNotFoundException: > Gross\Documents\Projects\discom\hadoop-0.21.0\logs > at java.net.URLClassLoader$1.run(URLClassLoader.java:202) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:190) > at java.lang.ClassLoader.loadClass(ClassLoader.java:306) > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) > at java.lang.ClassLoader.loadClass(ClassLoader.java:247) > Could not find the main class: > Gross\Documents\Projects\discom\hadoop-0.21.0\logs. Program will exit. > > Does anyone know what I need to change? > > Thank you. > > From, Drew > > -- > Forget the environment. Print this e-mail immediately. Then burn it. >
