Spark Interview Question6: optimize transformations and actions? What is Catalyst?

Date: March 5th, 2024

Hi everyone! I started posting contents about Spark interview questions for SWE/Data Engineers, mainly for Spark Optimization related questions. I aim to continuously write about ten posts about Spark optimization. After the series of these posts, you will ace technical interviews related to Spark! Although this post aims for helping technical interview rounds, any Spark users will find this series insightful and help your learning!

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Optimizing transformations and actions in Spark

Understanding Transformations and Actions:

Transformations and Actions in Spark, what are they?

• Transformations: These are operations that create a new RDD or DataFrame from an existing one. Transformations are…