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Google Document Program (GFS) was created at Google to meet up with the high data developing requirements. Hadoop’s Distributed Document Program (HDFS) was originally created by Google.Inc but it can be preserved as an open up resource by Apache Software program Base. HDFS was constructed centered on Google’t GFS and Map Reduce. As the internet data was rapidly increasing there was a need to store the large data coming so Google developed a distributed file system called GFS and HDFS was developed to meet the various client needs. These are constructed on product equipment so the systems fail frequently. To make the functional systems dependable the data can be duplicated among multiple nodes. By default minimum number of replicas is 3. Large numbers of data files and large documents are common with these kinds of document systems. Data is definitely even more frequently examine than composing. Large streaming needs and small random needs are supported. Functioning of GFS: GFS contains Professional node and portion hosts which are utilized by multiple customers. The customer demands the expert for the piece area. The document is definitely delivered by the customer name and the piece index he requires. Master stores the nam...