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Interview questions
What is the difference between cache() and persist() in Spark? When would you use each?
Demonstrate the difference between DENSE_RANK() and RANK()
Detail examples of inner, outer, left, and right joins.
How would you handle a deadline conflict between two high-priority projects?
Discuss versioning in S3.
Modify a word count script to output results in descending frequency order.
What are docstrings? Use examples.
Which data structure occupies more memory: list or tuple? Why?
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