Question

I tried to run ./hadoop start-all.sh
Unfortunately this error is thrown

Exception in thread "main" java.lang.NoClassDefFoundError: start/all/sh
Caused by: java.lang.ClassNotFoundException: start.all.sh
    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: start.all.sh. Program will exit.

I though it might have been the hadoop path but that does not seem to fix the issue. The path that i set in the hadoop-env.sh is /usr/local/hadoop/bin`.

I looked at other posts with simular titles
Hadoop: strange ClassNotFoundException

what is considered the main class. I tried changing the path to /usr/local/hadoop/bin/

Answer 1

Its a shell script. >> start-all.sh should do. You do not need hadoop. You can find more information here. http://hadoop.apache.org/common/docs/r0.19.2/quickstart.html