About Me

Love JAVA related technologies. Recently researching on Enterprise Integration (SOA and Messaging), Mobility and Big Data. I have working in JAVA related technologies as Software Architect, Enterprise Architect and Software Developer/Engineer for over 11 years. Currently, I am working as Senior Consultant of VMWare Inc.

Wednesday, November 7, 2012

Hadoop basic












MapReduce

In MapReduce, map and reduce work together but they are 2 different concepts and perform distinctive functionality.
Map - application or function
Reduce - take the outputs from Map as inputs then perform aggregation computation

 Interesting vidoes
http://research.google.com/roundtable/MR.html
O'Reilly Webcast: An Introduction to Hadoop

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