Book Image

Learning YARN

By : Akhil Arora, Shrey Mehrotra, Shreyank Gupta
Book Image

Learning YARN

By: Akhil Arora, Shrey Mehrotra, Shreyank Gupta

Overview of this book

Today enterprises generate huge volumes of data. In order to provide effective services and to make smarter and more intelligent decisions from these huge volumes of data, enterprises use big-data analytics. In recent years, Hadoop has been used for massive data storage and efficient distributed processing of data. The Yet Another Resource Negotiator (YARN) framework solves the design problems related to resource management faced by the Hadoop 1.x framework by providing a more scalable, efficient, flexible, and highly available resource management framework for distributed data processing. This book starts with an overview of the YARN features and explains how YARN provides a business solution for growing big data needs. You will learn to provision and manage single, as well as multi-node, Hadoop-YARN clusters in the easiest way. You will walk through the YARN administration, life cycle management, application execution, REST APIs, schedulers, security framework and so on. You will gain insights about the YARN components and features such as ResourceManager, NodeManager, ApplicationMaster, Container, Timeline Server, High Availability, Resource Localisation and so on. The book explains Hadoop-YARN commands and the configurations of components and explores topics such as High Availability, Resource Localization and Log aggregation. You will then be ready to develop your own ApplicationMaster and execute it over a Hadoop-YARN cluster. Towards the end of the book, you will learn about the security architecture and integration of YARN with big data technologies like Spark and Storm. This book promises conceptual as well as practical knowledge of resource management using YARN.
Table of Contents (20 chapters)
Learning YARN
About the Authors
About the Reviewers

An overview of the Hortonworks and Cloudera installations

Hortonworks and Cloudera are two main distributors of Hadoop. These distributors have their own style of installation. The installation is done as a package installation through yum (CentOS) or apt-get (Ubuntu). The directory structure is different for configuration files, log files, .pid files, and so on.

Both these distributors have developed tools to provision, manage, and monitor the Hadoop clusters through a web UI. Cloudera Manager from Cloudera and Apache Ambari are being used by a majority of the companies. Ambari is an open source project that lacks features such as rolling upgrades, managements of third-party libraries, and so on. Cloudera Manager is a mature product and is available in both Express and Enterprise versions.

To read more about Cloudera Manager and Ambari, you can refer to the official website at