You might want to start with http://hadoop.apache.org/common/docs/stable/mapred_tutorial.html.
On May 23, 2012, at 12:47 PM, samir das mohapatra wrote:
> Hi All,
> How to compare to input file In M/R Job.
> let A Log file around 30GB
> and B Log file size is around 60 GB
> I wanted to know how i will define <K,V> inside the mapper.
Arun C. Murthy