Fita is is specialized in Hadoop Training Institutes in Chennai. Big data is the term for a collection of data sets so large and complex that it becomes difficult to process using traditional database management tools and that is the main problem. the data in the world today has been created in the last two years alone. the data captured today is unstructured, from sensors used to gather climate information, posts to social media sites, digital pictures and videos, purchase transaction records, and cell phone GPS signals, to name a few. All of this unstructured data is Big Data according to hadoop training.