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Real questions from top companies · hard
What is the difference between Pandas DataFrame and Spark DataFrame? When would you prefer using each?
What is the importance of the checkpoint location in Databricks?
What is the salting technique, and when would you use it?
What performance optimization techniques have you applied in Spark, Sqoop, or Databricks?
What role does Kafka play in real-time data streaming pipelines?
What role would Kafka or similar event-driven platforms play in your architecture?
What strategies would you use to reduce latency in a streaming data pipeline?
What trade-offs would you consider when choosing between batch processing and real-time streaming?
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