Hadoop is a collection of open-source frameworks that compute large volumes of data, often termed 'big data,' using a network of small computers. It's an open-source application developed by Apache and used by Technology companies worldwide to get meaningful insights from large volumes of Data. It uses the MapReduce programming model to process the Big mentioned above Data.
Therefore, learning Hadoop Application requires understanding Big Data and MapReduce programming tools. The main reason for distributed file storage network using an array of computers is the assumption that hardware failure is inevitable and should be handled by systems instead of manual intervention every time failure occurs. Hadoop consists of two main parts, viz. The storage part is called the Hadoop Distributed File System (HDFS), and the Processing part is called the MapReduce Programming Model.
We are generating excessive data every second across the globe and organizations. However, the RDBMS system of the database management system has failed to store and process such a large amount of data or Big Data. Therefore, organizations have adopted Hadoop architecture to store and process their data which runs in Petabytes for some companies daily!
It stores both structured and Unstructured data, and as discussed above, it tackles hardware failures without human intervention due to fragmented processing by computers. Also, it processes complex and large sets of data easily and swiftly.
Since almost all of the technology companies and major fortune 500 companies use Apache Hadoop to store and process their Data, it becomes an essential skill to learn for anyone looking to work in any of these companies. Hadoop is one of the most sought-after skills companies are looking for when hiring.
Some of the best applications of Hadoop application by organizations are,
Major financial organizations have started using Hadoop to process big data accumulated by Banks and other Financial and Public institutions to build complex Financial Models, Assess Risks and create complex Trading Algorithms that also facilitate them to trade at a fraction of a second.
Since Hadoop is a Java-based application, working knowledge of Java is essential. Also, programming knowledge of Python and query language is an advantage.
Anyone willing to learn Big Data but specifically for computer science graduates and those working in Data Management looking to upgrade their skills.