Dear all,
I have been trying to get a hang of Hadoop (noob/ newbie). After
installation, I followed the Quick Start guide of Hadoop to execute the
sample example given (
http://hadoop.apache.org/common/docs/r0.20.2/quickstart.html#Local
Standalone Operation ).
After executing the third step ( $ bin/hadoop jar hadoop-*-examples.jar grep
input output 'dfs[a-z.]+' ),
I got the error saying that
"Exception in thread "main" java.lang.NoClassDefFoundError:
Internship/hadoop-0/20/2/bin////logs
Caused by: java.lang.ClassNotFoundException:
Internship.hadoop-0.20.2.bin....logs
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: Internship/hadoop-0.20.2/bin/../logs. Program
will exit."
I tried a lot of different things and nothing worked.
Some of the solutions that didn't help:
1) Set the $JAVA_HOME path correctly (works fine)
2) Command incorrect: $ bin/hadoop jar hadoop-*-examples.jar grep input
output 'dfs[a-z.]+' (correct as per Hadoop QuickStart)
Any form of help is very very gratefully appreciated.
Thanks in advance.
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