Spark Programming in Python for Beginners with Apache Spark 3 - Grouping Aggregations

This video tutorial demonstrates how to set up a Spark session and load raw data into a DataFrame. It covers data preparation steps, including converting string dates to date fields and filtering data. The tutorial explains how to group data by country and week number, and perform aggregations using the AG method. It concludes with saving the results as a parquet file and a brief mention of colise, which will be covered in a future video.

Describe the process of aggregating data by country and week number.

What is the purpose of saving the data frame as a parquet file?