What performance optimization techniques have you applied in Spark, Sqoop, or Databricks?
Spark/Big Datahard
2
What role does Kafka play in real-time data streaming pipelines?
Spark/Big Datahard
3
When submitting Spark jobs, how does the process work in the backend? Explain.
Spark/Big Datahard
4
Why I chose specific technologies (e.g., Spark over traditional ETL tools)
Spark/Big Datahard
5
Write a PySpark script to check for missing values and duplicate rows in a DataFrame. How would you ensure data quality before saving it to a storage system?
Spark/Big Datahard
6
Write a Spark job to count word occurrences from an S3 dataset.
Spark/Big Datahard
7
Architect a solution to handle notifications for millions of users with varying preferences.
System Design/Architecturehard
8
Build a banking system architecture from scratch, highlighting critical workflows, scalability, and data management strategies.
System Design/Architecturehard
+20 More Questions with Expert Answers
Get the complete 1,800+ question library with detailed, expert-level answers covering SQL, Spark, System Design, Python, Cloud, and Behavioral topics.