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Interview questions
What is the difference between groupByKey and reduceByKey in Spark?
Demonstrate the difference between DENSE_RANK() and RANK()
Write a Python function to check if a string is a palindrome.
Implement a Spark job to find the top 10 most frequent words in a large text file.
Describe a real-world use case for using Step Functions with Lambda in a data workflow.
Describe using Step Functions to handle retries and error notifications.
Explain how Access Control Lists (ACLs) can affect IAM role permissions.
Explain how Step Functions integrate with other AWS services.
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