[Exercise] Implement Friends by Age with Datasets Back to: Apache Spark 3 with Scala – Hands On with Big Data! Previous Lesson [Activity] Using DataFrames and DataSets Lesson 3 within section SparkSQL, DataFrames, and DataSets. You must enroll in this course to access course content. Next Lesson Exercise Solution Lesson 5 within section SparkSQL, DataFrames, and DataSets. You must enroll in this course to access course content.