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From james isaac <jamesisaac.d...@gmail.com>
Subject Exception in thread "main" java.lang.ClassNotFoundException in Hadoop
Date Mon, 12 Jul 2010 12:15:18 GMT

I have just started my career with Hadoop. I tried to execute the example
given in http://hadoop.apache.org/common/docs/r0.20.1/mapred_tutorial.htmlas
explained in the tutorial. I was not able to execute the program as
described in the tutorial. I am getting the error as shown below. I tried
executing with some other examples. They are also showing the same
“ClassNotFoundException”. I tried to find the solution in various websites
but i could not find it. Please help me to find the problem.

Exception in thread "main"
java.lang.ClassNotFoundException: org.myorg.WordCount
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.hadoop.util.RunJar.main(RunJar.java:149)

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