Finishing up a self learning plan on the basics of MySQL and doing some cool exercises on that, today I started a pretty interesting course from Udacity on Hadoop. Like MySQL, Hadoop is a also growing, popular tool to deal with BIG DATA. There are, however, significant differences between MySQL and Hadoop platforms.
Fist of all, the data in MySQL is structured and comes in one single format i.e. SQL, while Hadoop can work with a variety of structured and un-structured data sets. Hadoop helps to do the analysis in parallel and therefore faster in a cluster of processors.
If you want to take the course, here is the link!