Hadoop is a combination of frameworks each having its own purpose, HDFS -> Distributed data storage, (i.e., if you have to manage huge amount of data which may NOT fit into single machine then DFS (distributed file system) is a way through which you can store and manage your data across multiple machines) Mapreduce -> Hadoop mapreduce is a parallel processing batch oriented framework where you can run a single task in parallel across multiple machines Hbase -> is a distributed NOSQL data base (there are major differences b/w a relational data base and Hbase) and many other frameworks in the Hadoop eco-system includes Mahout, Hive, Pig etc has their own applications.
One important note is that Hadoop run on a commodity hardware. Best, Mahesh Balija, Calsoft Labs. On Fri, Feb 15, 2013 at 12:08 PM, SrinivasaRao Kongar <[email protected]>wrote: > > Hi sir, > > What is Hadoop technology? what is the main purpose of this Hadoop > technology? > > -- > Thanks&Regards, > SrinivasaRao Kongara >
