Hadoop an apache product which is an open-source, Java based programming framework is used to support large data sets in a distributed environment. Hadoop has maximum advantage over scalable and fault-tolerant distributed processing technologies. Also,(HDFS)Hadoop Distributed File System is highly fault tolerant and used for applications that have large data sets. Hence HDFS file system using name node, data node and task tracker will perform distribution of job in Hadoop environment.Since Hadoop has overwhelming advantage in optimizing big data, we prefer to use Hadoop to analyze large datasets of weather processing. © 2016, International Journal of Pharmacy and Technology. All rights reserved.