unable to run hadoop wordcount example?

Question

I am running hadoop wordcount example in single node environment on ubuntu 12.04 in vmware. i running the example like this:--

hadoop@master:~/hadoop$ hadoop         


        

Answer 1

If you've created your own .jar and is trying to run it, pay attention:

In order the run your job, you had to have written something like this:

hadoop jar    

But if you take a closer look to your driver code, you'll see that you have set arg[0] as your input and arg[1] as your output... I'll show it:

FileInputFormart.addInputPath(conf, new Path(args[0]));
FileOutFormart.setOutputPath(conf, new Path(args[1]));

But, hadoop is taking arg[0] as instead of and arg[1] as instead of

So, in order to make it work, you should use:

FileInputFormart.addInputPath(conf, new Path(args[1]));
FileOutFormart.setOutputPath(conf, new Path(args[2]));

With arg[1] and arg[2], so it'll get the right things! :) Hope it helped. Cheers.