According to Internet world statistics, today Internet has 1.7 Billion users, compared with the population of 6.7 billion people. Around 40% of the world population is connected via internet across the globe. By 2020 it is predicted, former will shoot to 5 billion users. Services are rapidly growing on the Internet, generating huge volume of data likewise, trace logs, service information and their respective relationships etc. So, there is an urging need to gather such massive amount of data. This is where the term-\"Big data\" comes into picture.