Book Image

Mastering Hadoop 3

By : Chanchal Singh, Manish Kumar
Book Image

Mastering Hadoop 3

By: Chanchal Singh, Manish Kumar

Overview of this book

Apache Hadoop is one of the most popular big data solutions for distributed storage and for processing large chunks of data. With Hadoop 3, Apache promises to provide a high-performance, more fault-tolerant, and highly efficient big data processing platform, with a focus on improved scalability and increased efficiency. With this guide, you’ll understand advanced concepts of the Hadoop ecosystem tool. You’ll learn how Hadoop works internally, study advanced concepts of different ecosystem tools, discover solutions to real-world use cases, and understand how to secure your cluster. It will then walk you through HDFS, YARN, MapReduce, and Hadoop 3 concepts. You’ll be able to address common challenges like using Kafka efficiently, designing low latency, reliable message delivery Kafka systems, and handling high data volumes. As you advance, you’ll discover how to address major challenges when building an enterprise-grade messaging system, and how to use different stream processing systems along with Kafka to fulfil your enterprise goals. By the end of this book, you’ll have a complete understanding of how components in the Hadoop ecosystem are effectively integrated to implement a fast and reliable data pipeline, and you’ll be equipped to tackle a range of real-world problems in data pipelines.
Table of Contents (23 chapters)
Title Page
Dedication
About Packt
Foreword
Contributors
Preface
Index

Encryption


There are two types of encryptions in Hadoop. One is for encrypting data that is transferred over the network. That is called data in transit encryption. Another is for encrypting data that is stored on disks, which is called data at rest encryption. We will look at both of these types of encryption techniques in the following sections. 

Data in transit encryption

To understand in transit encryption of any Hadoop cluster, you need to understand how different components are communicating with each other. By how, we mean what kind of network protocol they are using. Enabling encryption over the network depends upon what kind of communication protocol is being used for communication.

We can think of Hadoop cluster components using three different types of protocols, namely RPCTCP/IP, and HTTPRPC is used for network communication of MapReduce programming, JobTracker communication, TaskTracker communication, and NameNode communication. The TCP/IP protocol is used for communication...