ABSTRACT: Big data is a term that describes the large volume of data ??? both structured and unstructured ??? that inundates a business on a day-to-day basis. Big data is not merely data, rather it has become a complete subject, which involves various tools, techniques and frameworks. Big Data refers to the data volumes in the range of 10-10,000 tera bytes and beyond. Such volumes exceed the capacity of current storage systems and processing system. One cannot claim that technology is 100 percent good, beneficial and effective to support the mammoth size of data. Every emerging technology has both advantages and disadvantages associated with it and as time passes it gets reframed to get better out of best. It was observed that all the developmental prospects have environmental, social, and human consequences that go far beyond the immediate purposes of the technical devices and practices themselves. The era of Big Data has begun. Computer scientists, physicists, economists, mathematicians, political scientists, bio-informaticists, sociologists, and many others are demanding for access to the massive quantities of information produced by ???internet of things???. In this paper a review study is made to analyze the issues and challenges are inline with adopting this technology and benefits that are end product of using big data in special reference to Social media.