Practice - Actions (Eager Execution)
Practice Questions
Test your understanding with targeted questions
What does the collect() action do?
💡 Hint: Think about how you would gather all the items from a collection.
True or False: Transformations execute immediately when called.
💡 Hint: Remember the difference between laziness and eagerness in Spark.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the action count() do?
💡 Hint: Think about what you want to know about the items in your collection.
True or False: The collect() action is the safest way to retrieve data from a large RDD.
💡 Hint: Consider what can happen if you try to fit too much data into a small space.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You have a large dataset of user transactions in an RDD and need to find the total number of transactions and save the result to a file. How would you accomplish this?
💡 Hint: Think about the sequence you need to follow and how you would combine actions.
Describe a scenario where failing to understand the distinction between actions and transformations could lead to performance issues.
💡 Hint: Consider the implications of retrieving large amounts of data at once.
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Reference links
Supplementary resources to enhance your learning experience.