Abstract: In the last few years, the growth in hardware technology has made it for many companies to store huge amount of data. The data streams are infinite and it can be found in many applications. Data will arrive continuously as a stream in a dynamic fashion, processing and querying of these streams are challenging tasks. Big data is a set of techniques and technologies that require new forms of integration to uncover large hidden values from large datasets that are diverse, complex, and of a massive scale. Big data environment is used to acquire, organize and analyze the various types of data. There is a requirement of efficient data mining techniques which can handle the streaming data. In this paper we explore various issues and challenges on Big Data.

Keywords: Data Mining, Data Stream, Big Data, Hadoop.