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

The need for curating raw data

Data in the bronze layer is raw by nature in that it gets collected from several distinct and diverse data sources. Due to the diverse sources, it is natural for data to be delivered in unstandardized, invalid, inconsistent, non-uniform, duplicate, or insecure forms. In some other cases, raw data may have PII data in clear text, which should be properly masked before analytical consumption.

Important note

In big data, one of the hotly debated topics is veracity – that is, can the organization put trust in the data that is being collected? And if yes, then how much?

Let's try to understand some characteristics of unclean data so that we can properly justify the reasons for curating data.

Unstandardized data

These days, typically, data is collected using online transaction processing (OLTP) applications. The problem is that OLTP applications, such as web applications and mobile applications created in different countries, follow...