Apache Spark 3 for Data Engineering and Analytics with Python - SortByKey Transformations

This video tutorial covers the basics of using the sort by key transformation in Spark. It begins with an introduction to the concept, followed by creating a list of tuples containing countries and their rankings. The tutorial then demonstrates how to create an RDD from this list and sort it by country name. It further explores sorting by ranking in descending order using map transformation and Lambda functions. The session concludes with a brief overview of RDD transformations and a preview of upcoming topics on RDD actions.

What is the purpose of the 'sort by key' transformation in the context of RDDs?

Describe how to create a list of tuples for countries and their rankings.

Explain the process of creating an RDD from a list of countries using the parallelize method.

How can you sort a list of countries by their ranking in descending order?

What is the significance of using a lambda function in the map transformation?

What steps are involved in switching the key-value pairs in a tuple for sorting?

Summarize the overall process of sorting a list of countries by their rankings.