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Learning YARN

You're reading from  Learning YARN

Product type Book
Published in Aug 2015
Publisher
ISBN-13 9781784393960
Pages 278 pages
Edition 1st Edition
Languages
Concepts

Table of Contents (20) Chapters

Learning YARN
Credits
About the Authors
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
1. Starting with YARN Basics 2. Setting up a Hadoop-YARN Cluster 3. Administering a Hadoop-YARN Cluster 4. Executing Applications Using YARN 5. Understanding YARN Life Cycle Management 6. Migrating from MRv1 to MRv2 7. Writing Your Own YARN Applications 8. Dive Deep into YARN Components 9. Exploring YARN REST Services 10. Scheduling YARN Applications 11. Enabling Security in YARN 12. Real-time Data Analytics Using YARN Index

Chapter 6. Migrating from MRv1 to MRv2

Hadoop development started in 2005 and in December 2011, it reached version 1.0.0. Enterprises started using Hadoop and implemented data processing algorithms based on the MapReduce programming framework. In 2013, Hadoop version 2.2.0 was released and the MapReduce framework went through a lot of architectural changes. A generic framework for resource management, that is, YARN was introduced and architecture for MapReduce job execution over a Hadoop cluster changed. The old API of the framework is known as MRv1 and the MapReduce APIs associated with YARN framework are termed as MRv2.

In this chapter, we will cover the following:

  • Introduction MRv1 and MRv2

  • Migrating to MRv2

  • Running and monitoring MRv1 apps on YARN

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