Hadoop Streaming in Python, hadoop streaming tutorial
Hadoop Streaming in Python – hadoop streaming tutorial
This video describes steps about how to write MapRedue produce programs in Python and test it using Hadoop streaming. This is one of the popular methods of writing MR code in non-java languages.
http://hadoop.apache.org/docs/r1.2.1/streaming.html#Hadoop+Streaming
http://hadoop.apache.org/docs/r1.2.1/streaming.html
https://en.wikipedia.org/wiki/MapReduce
source