What is Hadoop

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What is Hadoop? (2018) • Hadoop is an open source framework, developed by Doug cutting in 2006, and it is managed by the Apache Software Foundation. • The project was named as Hadoop after the name of a yellow stuffed toy elephant, which the Doug Cutting's son had. • Hadoop is designed to store and process, a huge volume of data, efficiently. • The Hadoop framework comprises of 2 main components. • The 1st component is the HDFS, HDFS stands for Hadoop Distributed File System. • And the 2nd component is the MapReduce. • The HDFS takes care of storing and managing the data within the Hadoop Cluster. • Whereas the MapReduce takes care of processing and computing the data, that is present within the HDFS. • Now let us try to understand what actually makes up a Hadoop Cluster. • A Hadoop Cluster is made up of 2 main nodes. • The 1st one is the Master Node and the 2nd one is the Slave Node. • The Master Node, is responsible for running the NameNode and JobTracker daemons. • For Your Information, • Node is a technical term used to describe a machine or a computer that is present within a cluster. • And Daemon is a technical term used to describe a background process running on a Linux machine. • The Slave Node, on the other hand is responsible for running the DataNode and TaskTracker daemons. • The NameNode and DataNode are responsible for storing and managing the data, and they are commonly referred as Storage Node. • Whereas the JobTracker and TaskTracker are responsible for processing and computing the data, and they are commonly referred to as Compute Node. • Usually the NameNode and JobTracker are configured and running on a single machine. • Whereas the DataNode and TaskTracker are configured on multiple machines, but can have instances running on more than one machine at the same time. • Apart from all this, we also have a Secondary NameNode, as part of the Hadoop Cluster, which we would be discussing about this in the later sessions. • Please don't forget to subscribe to our channel. • / itskillsindemand • Enroll into this course at a deep discounted price: • https://goo.gl/HsbEC8 • If liked this video, please like and share it. • Visit http://www.itskillsindemand.com to access the complete course. • Follow Us On • Facebook: / itskillsindemand • Twitter: / itskillsdemand • Google+: https://plus.google.com/+Itskillsinde... • YouTube: / itskillsindemand

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