Book Image

Optimizing Databricks Workloads

By : Anirudh Kala, Anshul Bhatnagar, Sarthak Sarbahi
Book Image

Optimizing Databricks Workloads

By: Anirudh Kala, Anshul Bhatnagar, Sarthak Sarbahi

Overview of this book

Databricks is an industry-leading, cloud-based platform for data analytics, data science, and data engineering supporting thousands of organizations across the world in their data journey. It is a fast, easy, and collaborative Apache Spark-based big data analytics platform for data science and data engineering in the cloud. In Optimizing Databricks Workloads, you will get started with a brief introduction to Azure Databricks and quickly begin to understand the important optimization techniques. The book covers how to select the optimal Spark cluster configuration for running big data processing and workloads in Databricks, some very useful optimization techniques for Spark DataFrames, best practices for optimizing Delta Lake, and techniques to optimize Spark jobs through Spark core. It contains an opportunity to learn about some of the real-world scenarios where optimizing workloads in Databricks has helped organizations increase performance and save costs across various domains. By the end of this book, you will be prepared with the necessary toolkit to speed up your Spark jobs and process your data more efficiently.
Table of Contents (13 chapters)
1
Section 1: Introduction to Azure Databricks
5
Section 2: Optimization Techniques
10
Section 3: Real-World Scenarios

Learning Structured Streaming in Azure Databricks

Spark Structured Streaming provides a scalable and fault-tolerant approach to processing data in real-time. In Structured Streaming, Spark processes data in micro-batches to achieve low latencies. Syntactically, it looks very similar to batch processing. The same Spark DataFrame Transformations are used for streaming aggregations, joining static and streaming data, and more. Structured Streaming also guarantees exactly-once stream processing, which ensures that there is no duplication of data. Let's look at a quick example:

  1. Create a new Databricks notebook, start your Spark cluster, and run the following command:
    %fs ls dbfs:/databricks-datasets/structured-streaming/events/

    This displays a list of 50 JSON files that we will be reading using Structured Streaming.

    Figure 2.24 – Data to be read using Structured Streaming

  2. Run the following code block. It imports the necessary functions, defines the schema for the DataFrame...