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Learning YARN

You're reading from Learning YARN Moving beyond MapReduce - learn resource management and big data processing using YARN

Product type Paperback

Published in Aug 2015

Publisher

ISBN-13 9781784393960

Length 278 pages

Edition 1st Edition

Tools

Hadoop

Concepts

Data Processing

Table of Contents (14) Chapters

Preface

1. Starting with YARN Basics FREE CHAPTER

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

The migration steps from MRv1 to MRv2

The migration steps from MRv1 to MRv2 can be categorized as:

The configuration changes to use YARN as the MapReduce execution framework
The binary / source compatibility while working with MapReduce APIs

Configuration changes

In this section, we'll discuss the configuration changes required during migration from MRv1 to MRv2. The information provided in this section is limited to the minimum configuration changes required during the migration. Detailed information regarding the deprecated and new properties is provided in a Cloudera blog at https://www.cloudera.com/content/cloudera/en/documentation/core/v5-2-x/topics/cdh_ig_mapreduce_to_yarn_migrate.html.

The upcoming sections describe the changes while migrating from MRv1 to MRv2.

The MapReduce framework
If you recall the configuration of a Hadoop cluster in MRv1, the mapred-site.xml file contains the host information related to the JobTracker service. In MRv2, the following property in the mapred-site.xml...

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