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?
Share a time when you had to explain a complex technical issue to a non-technical stakeholder.
Tell me about a time when a Spark job failed in production. How did you fix it?
Tell me about a time when you faced a tight deadline in a project, and how did you manage it?
Tell me about a time you handled a data pipeline failure during a critical operation.
What challenges can arise when using high degrees of parallelism?
What challenges did you encounter when scaling your project?
What storage format would you choose for analytics-heavy workloads and why?
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