1. AH. (2011). Apache Hadoop. Retrieved from http://hadoop.apache.org/
2. AH. (2012). Apache Hive. Retrieved from http://hive.apache.org/
3. AM. (2012). Apache Mahout. Retrieved from http://mahout.apache.org/
4. AP. (2012). Apache Pig. Retrieved from http://pig.apache.org/
5. MapReduce