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Questions tagged spark · hard
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 database drivers/connectors and their use cases.
Explain how Glue's Spark-based architecture handles data parallelism.
Explain how Spark groups transformations into stages. What causes a stage boundary?
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