Multiple Output in Reducer

Question

I am working on simple map reduce program. I want to create different files after reducer for each different word in the key. For example, after executing Mapreduce I have somet

Answer 1

Have a look at MultipleOutputs.

Answer 2

You need to create a partioner class first, that partions based on your criteria.

You then need to create your own outputformat class and a recordwriter class.

The recordwriter class, needs to write to different files as per your needs. Further if you need to sort your values create comparator class for your key field.