PySpark and AWS: Master Big Data with PySpark and AWS - Total Enrollments per Course

The video tutorial explains how to count the total number of students enrolled per course using a key-value pair approach. It involves mapping course names to a value of one and then applying a reduce by key function to aggregate these values. The process is demonstrated using an IDE, where the key-value pairs are created and reduced to find the total enrollments. The tutorial provides a detailed explanation of the reduce by key process and concludes with final steps and remarks.

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