Map Reduce
Everyone is saying that the world is going the cloud way. Big Data, Analytics etc are today’s buzzwords. I used to wonder what is so special about the cloud? I read a bit about Hadoop, HBase (the NoSQL DB for Hadoop) etc and came to know about the Map Reduce Framework.
Map Reduce is a framework which helps us to write program for the cloud. It is a simple framework. The MapReduce version of the Hello World program for Hadoop is the WordCount program.
I decided to start experimenting with this framework and have written a couple of programs. Find it here in my git repo.
How Map and Reduce operations are actually carried out: http://wiki.apache.org/hadoop/HadoopMapReduce http://wiki.apache.org/hadoop/MapReduce
Some Usecases of MapReduce: http://highlyscalable.wordpress.com/2012/02/01/mapreduce-patterns/