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Data Engineering with Apache Spark, Delta Lake, and Lakehouse

You're reading from  Data Engineering with Apache Spark, Delta Lake, and Lakehouse

Product type Book
Published in Oct 2021
Publisher Packt
ISBN-13 9781801077743
Pages 480 pages
Edition 1st Edition
Languages
Author (1):
Manoj Kukreja Manoj Kukreja
Profile icon Manoj Kukreja
Toc

Table of Contents (17) Chapters close

Preface 1. Section 1: Modern Data Engineering and Tools
2. Chapter 1: The Story of Data Engineering and Analytics 3. Chapter 2: Discovering Storage and Compute Data Lakes 4. Chapter 3: Data Engineering on Microsoft Azure 5. Section 2: Data Pipelines and Stages of Data Engineering
6. Chapter 4: Understanding Data Pipelines 7. Chapter 5: Data Collection Stage – The Bronze Layer 8. Chapter 6: Understanding Delta Lake 9. Chapter 7: Data Curation Stage – The Silver Layer 10. Chapter 8: Data Aggregation Stage – The Gold Layer 11. Section 3: Data Engineering Challenges and Effective Deployment Strategies
12. Chapter 9: Deploying and Monitoring Pipelines in Production 13. Chapter 10: Solving Data Engineering Challenges 14. Chapter 11: Infrastructure Provisioning 15. Chapter 12: Continuous Integration and Deployment (CI/CD) of Data Pipelines 16. Other Books You May Enjoy

Creating a Delta Lake table

With the environment set up, we are ready to understand how Delta Lake works. In our Spark session, we have a Spark DataFrame that stores the data of the store_orders table that was ingested at the first iteration of the electroniz_batch_ingestion_pipeline run:

Important Note

A Spark DataFrame is an immutable distributed collection of data. It contains rows and columns like a table in a relational database.

  1. At this point, you should be comfortable running instructions in notebook cells. New cells can be created using Ctrl + Alt + N. After each command, you need to press Shift + Enter to run the command.

    From here onwards, I will simply ask you to run the instructions with the assumption that you know how to create new cells and run commands. Invoke the following instructions to write the store_orders delta table:

    SCRATCH_LAYER_NAMESPACE="scratch"
    DELTA_TABLE_WRITE_PATH="wasbs://"+SCRATCH_LAYER_NAMESPACE+"@"+STORAGE_ACCOUNT...
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