Nikola Ilic doesn’t accept the default:
In this article, I’ll walk you through how to go from out-of-the-box default Spark configurations to a fine-tuned setup that suits your specific workloads and requirements, as well as getting you ready for the DP-700 exam.
Spark is an extremely powerful engine, but like any powerful tool, it runs best when you tune it. So, don’t always settle for default. Get dynamic—and get Spark working the way you need it to.
Click through for the explanation of functionality.