Design a fault-tolerant Spark Streaming checkpoint strategy: what to persist, recovery semantics, and cost/scalability trade-offs with checkpoint frequency.
Spark/Big Datahard
22
Explain the Medallion Architecture (Bronze, Silver, Gold layers).
Spark/Big Datahard
23
Explain the benefits of using DataFrames over RDDs.
Spark/Big Datahard
24
How do you optimize Spark jobs for performance?
Spark/Big Datahard
25
What are the key components of the Spark execution model (Job, Stage, Task)?
Spark/Big Datahard
26
What is Spark's Catalyst Optimizer? Explain its stages.
Spark/Big Datahard
27
What is the difference between Spark RDDs, DataFrames, and Datasets?
Spark/Big Datahard
28
How do you stay updated with the latest trends and technologies in data engineering?
Behavioralhard
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