To run a MR-Streaming job invoke the following command with your desired values.
hadoop jar /usr/hdp/current/hadoop-mapreduce-client/hadoop-streaming.jar
-D mapreduce.map.memory.mb=256
-files map.py
-mapper 'map.py'
-reducer NONE
-input /DesiredHDFSDirectory/inputs
-output /DesiredHDFSDirectory/Output \