part-r-00000 is empty

[ishitvyas]

I'm trying to run the sample program that calculates average pixel values on Hadoop 2.7.3
I'm not getting any error but just one warning:

WARN mapreduce.JobResourceUploader: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this.

I don't know whether this is what causing the part-r-00000 file to be empty. But somehow I'm getting the part-r-00000 file empty. There is also _SUCCESS file generated in Hadoop file system.

[ashishkumar4029]

@ishitvyas is part-r-00000 created?