How to run a Hadoop program?

Question

I have set up Hadoop on my laptop and ran the example program given in the installation guide successfully. But, I am not able to run a program.

rohit@renaissa         


        

Answer 1

I found this problem as well when going thru the Hadoop Book (O'Reilly). I fixed it by setting the HADOOP_CLASSPATH variable in the hadoop-env.sh file in your configuration directory.