What is Hadoop and Why it is used ?
What is Hadoop and Why it is used
Apache Hadoop is a collection of open-source software utilities, which facilitate using a network of many computers to solve the problems involving massive amounts of data and computation.
The Hadoop framework is mostly written in the Java programming language, with some native coding in C and command line utilities written as shell scripts. Though MapReduce Java code is common, any programming language can be used with Hadoop Streaming to implement the map and reduce parts of the user’s program.
Hadoop provides a massive storage for all kinds of data, enormous processing power and the ability to handle the virtually limitless concurrent tasks or jobs.It provides a software framework for distributed storage and processing of big data using the MapReduce programming model.
Hadoop was originally designed for computer clusters built from commodity hardware, it is used for common use and also has found use on clusters of higher-end hardware. All the modules in Hadoop are designed with a fundamental assumption that hardware failures are common occurrences and should be automatically handled by the framework.
Hadoop is a Java-based implementation of a clustered file system called HDFS, which allows you to do cost-efficient, reliable, and scalable distributed computing. The HDFS architecture is highly fault-tolerant and it is designed to be deployed on low-cost hardware.
Hadoop is used for storing and processing the big data. In Hadoop, the data is stored on inexpensive commodity servers which run as clusters. It is a distributed file system that allows the concurrent processing and fault tolerance. Hadoop MapReduce programming model is used for the faster storage and retrieval of data from its nodes.
Hadoop can be used for searching – Yahoo, Amazon, Zvents; Log processing – Facebook, Yahoo; Data Warehouse – Facebook, AOL;
Video and Image Analysis – New York Times, Eyealike.
Now a days, Hadoop has become a go-to solution for the big data in many different implementations. For commercial businesses, Hadoop can be an analytics platform to drive the business decisions.
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