Introduction
The word “cloud” has become the buzzword for the latest emerging technologies being delivered in the corporate world. The most familiar technology used for Big Data is Hadoop. Learning from Hadoop makes you earn more along with good career growth. Hadoop is a free Java-based application programming tool that supports the delivery of large amounts of data sets using simple programs, at the same time to many servers. It belongs to the Apache project delivered by the Apache Software Foundation. It was used by many web-based companies like Yahoo, Google, eBay, LinkedIn, Facebook, and IBM. Compared to other technologies, the main advantage of Hadoop applications is that they are incredibly flexible, robust, and efficient.
Core parts of Hadoop
The Hadoop architecture was made up of two parts; one is HDFS (Hadoop Distributed File System) while the other is Hadoop MapReduce.
-The Hadoop Distributed File System (HDFS) is a virtual file system. When you move a file in HDFS, it will be split into many small files that have been replicated and stored on different servers to meet fault tolerance constraints.
-Hadoop MapReduce is the Java-based system tool used to work with the data itself. MapReduce plays an important role compared to HDFS.
The main function of MapReduce is to run a series of jobs based on a Java application that processes the data and extracts the necessary information. MapReduce is somewhat complex, but instead of a query, it provides a lot of power and flexibility.
In general, Hadoop is not a database. Hadoop is more of a data storage system with no queries involved. So, you use a system like MapReduce to process the data.
Hadoop Demand
As the days go by, billions of images, videos and many things are downloaded daily on the internet through many websites like Facebook, YouTube etc. To manage this large amount of data, Hadoop technology with an affordable price has emerged in the market.
What makes people choose Hadoop?
Everyone wants to have career growth along with hikes related to their package. At present, the business world is showing a greater interest towards cloud-based technologies to achieve greater efficiency. Like most big companies they are hiring agile people with the latest technologies. The whole world tends to go for Hadoop to get a better run with a good package.