Practice - Transformations (Lazy Execution)
Practice Questions
Test your understanding with targeted questions
What is lazy evaluation in Spark?
💡 Hint: Think about when Spark decides to perform calculations.
Give an example of a narrow transformation.
💡 Hint: How does map work with RDDs?
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does lazy execution in Spark allow?
💡 Hint: Think about when Spark actually runs the code.
True or False: Narrow transformations require shuffling data across the network.
💡 Hint: Consider what happens to data with narrow transformations.
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Challenge Problems
Push your limits with advanced challenges
Consider a dataset with millions of records. Describe the potential impact on performance if multiple wide transformations are used successively.
💡 Hint: Think about the cost of data transfers.
Given a sample RDD containing sales data, outline a sequence of transformations that include both narrow and wide transformations while optimizing for performance.
💡 Hint: Always filter before you apply wide transformations.
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Reference links
Supplementary resources to enhance your learning experience.