It is recommended to create a regular user to configure and run Apache Hadoop. OpenJDK 64-Bit Server VM (build 25.212-b04, mixed mode) Create Hadoop user & Enable Passwordless Authentication OpenJDK Runtime Environment (build 1.8.0_212-b04) Here, for this demo, I will be installing OpenJDK 8. READ: How To Install Oracle Java on Debian 9 READ: How To Install Oracle Java on Ubuntu 18.04 READ: How To Install Oracle Java on CentOS 7 / RHEL 7 So, you can choose to install either OpenJDK or Oracle JDK.

PrerequisitesĪpache Hadoop requires Java version 8 only. This guide should also work on Ubuntu 16.04. This guide will help you to install Apache Hadoop on CentOS 7, Ubuntu 18.04 & Debian 9. Hadoop MapReduce – is a framework for large-scale data processing.Hadoop YARN – It manages resources on compute clusters and using them for scheduling user’s applications.

Hadoop Distributed File System (HDFS) – is a Java-based distributed file-system that stores data, providing very high-throughput to the application.

Hadoop Common – It contains a common set of libraries and utilities that support other Hadoop modules.

Hadoop framework consists of following modules, Rather than rely on hardware high availability, Hadoop modules are designed to detect and handle the failure at the application layer, so gives you high-available service. Apache Hadoop is an open-source software framework written in Java for distributed storage and distributed process, and it handles the very large size of data sets by distributing it across computer clusters.

Ubuntu 18.04 install openjdk 7