Book Image

Data Engineering with Apache Spark, Delta Lake, and Lakehouse

By : Manoj Kukreja
5 (2)
Book Image

Data Engineering with Apache Spark, Delta Lake, and Lakehouse

5 (2)
By: Manoj Kukreja

Overview of this book

In the world of ever-changing data and schemas, it is important to build data pipelines that can auto-adjust to changes. This book will help you build scalable data platforms that managers, data scientists, and data analysts can rely on. Starting with an introduction to data engineering, along with its key concepts and architectures, this book will show you how to use Microsoft Azure Cloud services effectively for data engineering. You'll cover data lake design patterns and the different stages through which the data needs to flow in a typical data lake. Once you've explored the main features of Delta Lake to build data lakes with fast performance and governance in mind, you'll advance to implementing the lambda architecture using Delta Lake. Packed with practical examples and code snippets, this book takes you through real-world examples based on production scenarios faced by the author in his 10 years of experience working with big data. Finally, you'll cover data lake deployment strategies that play an important role in provisioning the cloud resources and deploying the data pipelines in a repeatable and continuous way. By the end of this data engineering book, you'll know how to effectively deal with ever-changing data and create scalable data pipelines to streamline data science, ML, and artificial intelligence (AI) tasks.
Table of Contents (17 chapters)
1
Section 1: Modern Data Engineering and Tools
5
Section 2: Data Pipelines and Stages of Data Engineering
11
Section 3: Data Engineering Challenges and Effective Deployment Strategies

Chapter 6: Understanding Delta Lake

In the previous chapter, we created the bronze layer of the lakehouse. The bronze layer stores raw data in the native form as collected from the data sources. The problem is that raw data is not in a shape that can be readily consumed for analytical operations.

As a data engineer, it is your responsibility to convert raw data into a shape and form that becomes ready for use analytical workloads. In this chapter, we will further advance our learning to cleanse raw data. The process of cleansing data involves applying the logic that cleans and standardizes data followed by writing it to the silver layer of the lakehouse.

But that is not all – the silver layer should store data in an open format that supports ACID (atomicity, consistency, isolation, and durability) transactions. This is done by using the Delta Lake engine. Before we start building the silver layer, we need to completely understand some critical features of Delta Lake and...