Ok, you have to build a MapReduce job and run it. Basically you need to implement a few interfaces (maper, reducer), create a jar with that code and submit it either command line or from Java create, configure and start a Job.   See this tutorial: https://hadoop.apache.org/docs/r2.6.0/hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapReduceTutorial.html   ... View more