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Interview questions · medium
What is the difference between cache() and persist() in Spark? When would you use each?
Tell me about a time when you faced a challenging situation at work and how you handled it.
What is a window function? Explain with an example.
Explain job bookmarking in AWS Glue. How does it help in incremental data processing?
Explain types of joins in Spark with examples.
Solve a query using window functions and GROUP BY to rank or aggregate data.
What are some best practices for writing efficient SQL queries?
What do you understand by data shuffling in Spark? Why is it important?
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