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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 NodeManager's view

The NodeManager service in YARN updates its resource capabilities to the ResourceManager and tracks the execution of containers running on the node.

Other than the health of a node, the NodeManager service is responsible for the following:

Execution of an application and its associated containers
Provide localized resources for the execution of containers related to applications
Manage logs of different applications

The NodeManager service has its own view for the following:

Application: This manages the application's execution, logs, and resources
Container: This manages the execution of containers as a separate process
Localized resource: This involves the files required for the container's execution

View 1 – Application

NodeManager manages the life cycle of the application's containers and resources used during application execution. The NodeManager view of an application represents how NodeManager manages the container's execution, resources, and logs of the application...

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