Book Image

Data Engineering with Python

By : Paul Crickard
Book Image

Data Engineering with Python

By: Paul Crickard

Overview of this book

Data engineering provides the foundation for data science and analytics, and forms an important part of all businesses. This book will help you to explore various tools and methods that are used for understanding the data engineering process using Python. The book will show you how to tackle challenges commonly faced in different aspects of data engineering. You’ll start with an introduction to the basics of data engineering, along with the technologies and frameworks required to build data pipelines to work with large datasets. You’ll learn how to transform and clean data and perform analytics to get the most out of your data. As you advance, you'll discover how to work with big data of varying complexity and production databases, and build data pipelines. Using real-world examples, you’ll build architectures on which you’ll learn how to deploy data pipelines. By the end of this Python book, you’ll have gained a clear understanding of data modeling techniques, and will be able to confidently build data engineering pipelines for tracking data, running quality checks, and making necessary changes in production.
Table of Contents (21 chapters)
1
Section 1: Building Data Pipelines – Extract Transform, and Load
8
Section 2:Deploying Data Pipelines in Production
14
Section 3:Beyond Batch – Building Real-Time Data Pipelines

Building a NiFi cluster

In this section, you will build a two-node cluster on different machines. Just like with MiNiFi, however, there are some compatibility issues with the newest versions of NiFi and Zookeeper. To work around these issues and demonstrate the concepts, this chapter will use an older version of NiFi and the pre-bundled Zookeeper. To build the NiFi cluster, perform the following steps:

  1. As root, or using sudo, open your /etc/hosts file. You will need to assign names to the machines that you will use in your cluster. It is best practice to use a hostname instead of IP addresses. Your hosts file should look like the following example:
    127.0.0.1	localhost
    ::1		localhost
    127.0.1.1	pop-os.localdomain	pop-os
    10.0.0.63	nifi-node-2
    10.0.0.148	nifi-node-1
  2. In the preceding hosts file, I have added the last two lines. The nodes are nifi-node-1 and nifi-node-2 and you can see that they have different IP addresses. Make these changes in the hosts file for each machine...