What is MapReduce used for

Now a days MapReduce use mani tech joint company for their data processing. such as: At Google Index construction for Google Search Article clustering for Google News Statistical machine translation wordcount, adwords and pagerank At Yahoo “Web map” powering Yahoo! Search Spam detection for Yahoo! Mail At Facebook Data mining Ad optimization Spam detection At research Astronomical image analysis (Washington) […]

MapReduce Operation step by step | with example

—MapReduce is a programming model Google has used successfully is processing its “big-data” sets (~ 20 petabytes per day). MapReduce requires a distributed file system and an engine that can distribute, coordinate, monitor and gather the results. Hadoop provides that engine through (the file system we discussed earlier) and the JobTracker + TaskTracker system. JobTracker is simply a scheduler. TaskTracker […]

What is Hadoop?

Hadoop is a free, open-source software framework for distributed storage and processing of large datasets on clusters of commodity hardware. It was developed by the Apache Software Foundation and is based on the Google File System (GFS) and MapReduce. Hadoop is designed to handle big data, which refers to extremely large datasets that cannot be processed by traditional data processing […]

Server rack setup for Hadoop cluster

This rack setup is idel for Hadoop cluster setup, by which cluser become more fault tolerant. The highest layer of Hadoop is the MapReduce engine that deals with the information stream and control stream of MapReduce occupations over conveyed processing frameworks. Figure shows the MapReduce engine architecture helping out HDFS. Like HDFS, the MapReduce engine also has a master/slave architecture […]