# Apache Spark: User-Defined Functions and Broadcast Join Day 2 Lab

> In this Spark lab, Zach explains the concept of User-Defined Functions (UDFs) and their application within the Spark execution environment. Through a practical code example, he guides viewers on schema updates and emphasizes the significance of caching.

- Web page: https://www.dataexpert.io/lesson/apache-spark-day-2-lab-yt-p736-l681
- Access: Requires enrollment
- Length: 36 min video
- Skills: SQL, Python, Apache Spark, Docker
- Academy: DataExpert.io Academy

## About this lesson

In this Spark lab, Zach explains the concept of User-Defined Functions (UDFs) and their application within the Spark execution environment. Through a practical code example, he guides viewers on schema updates and emphasizes the significance of caching.