Real questions from top companies · medium
What is broadcasting in Spark, and why is it used? Can you give an example of its use?
What is the difference between map and flatMap in Spark, and when would you use each?
What is the purpose of the Bronze, Silver, and Gold layers in a data pipeline?
What work is done by the executor memory in Spark?
When and how do you use Broadcast Join?
Write a Python script to find the count of each word in a text file using Spark.
Write the PySpark code to find the second highest salary in each department.
Write a Python function to check if a string is a palindrome.
Describe a time when you went above and beyond for a project or a customer.
Give an example of a time you failed and what you learned from it.
Can you provide an example of a time when you went above and beyond for a project?
Examples of conflicts with team members and how they were resolved.
How do you handle conflict with a product manager?
What challenges did you encounter when scaling your project?
What storage format would you choose for analytics-heavy workloads and why?
Why do you want to join American Express?
Why do you want to join EPAM?
Copy Large Files from On-Premises to Azure in ADF
Data Load in Synapse Table?
Explain the role of Glue Catalog in Athena.
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