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Interview questions
Describe a scenario where partitioning and bucketing would improve query performance.
How do you handle late-arriving data in Spark Structured Streaming?
What is the small-file problem in Spark, and how do you solve it?
How do you optimize Spark jobs for better performance? Mention at least 5 techniques.
What are decorators in Python, and how do they work?
Explain the difference between args and kwargs in Python.
Explain the trade-offs between batch and real-time data processing. Provide examples of when each is appropriate.
Retrieve the most recent sale_timestamp for each product (Latest Transaction).
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