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Real questions from top companies · hard
Explain Spark Architecture – Driver, Executors, and Tasks.
Explain Spark transformations (lazy evaluation, wide vs narrow).
Explain Spark's execution process – Job/Stage/Task creation.
Explain Spark's narrow vs. wide transformations and when to use each
Explain a scenario-based question on Spark optimization and how you would troubleshoot performance issues.
Explain aggregation functions in PySpark with examples and use cases.
Explain caching techniques in Databricks.
Explain data encryption in Databricks, both at rest and in transit.
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