This paper shows the big data infor

This paper shows the big data information and characteristics used in world wide. The issues are also
mentioned to give idea about the big data issues in real time. The security issue is pointed more in order to increase
the security in big data. We can improve security in big data by using any one of the approach or by combining
these three approaches in Hadoop Distributed File System which is the base layer in Hadoop, where it contains large
number of blocks. These approaches are introduced to overcome certain issues occurs in the name node and also in
Data node. In Future these approaches are also implemented in other layers of Hadoop Technology.