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

System security


System security is mostly related to the Operating System (OS) security and remote Secure Shell (SSH) access to nodes. OS security consists of regular checking and resolution of OS security vulnerability by applying patches or workarounds. As an administrator, you need to be aware of OS vulnerabilities and new malware that's released by hackers. You should also be aware of the different security patches and workarounds for those vulnerabilities.

Note

The following link has details of the latest OS vulnerabilities and malware:https://www.cvedetails.com/

 

A Hadoop cluster consists of a variety of nodes with different profiles. Some are master nodes consisting of NameNodes and journal nodes. Some are worker nodes consisting of HDFS DataNodes and HBase region servers. Especially in the case of remote SSH access, your firewall rules may also vary as per profile types of nodes. However, the following table is specific to SSH access and what kind of roles should have SSH access to...