Apache Spark installed in Ubuntu

I am not sure much uses of Apache Spark. But thought of installing and play around .
https://www.mapr.com/blog/game-changing-real-time-use-cases-apache-spark-on-hadoop

Successfully installed Apachespark in Ubuntu using the below blog instructions.
http://blog.prabeeshk.com/blog/2014/10/31/install-apache-spark-on-ubuntu-14-dot-04/

This is the beauty of Open Source softwares, you can install it and play around it ..and contribute for the project.

For more details - http://spark.apache.org/

examples - http://spark.apache.org/examples.html