What is the difference between repartition and coalesce in Apache Spark?
Spark/Big Datamedium
2
CDC During Migration - explain approaches for real-time Change Data Capture
System Design/Architectureeasy
3
Prioritize Spark optimizations by impact and effort. Discuss partitioning strategy, caching policy, join selection, shuffle reduction, and when each becomes a scalability or cost bottleneck.
Spark/Big Datahard
4
Walk through the three AQE features in Spark 3.x (coalesce, join switch, skew join)—how they operate at shuffle boundaries, which configs enable them, and what happens when AQE cannot help.
Spark/Big Datahard
5
What is Adaptive Query Execution (AQE) in Spark 3.x, and how does it improve performance?
Spark/Big Datamedium
6
Challenges faced in translating requirements into technical solutions?
Behavioraleasy
7
API calling with Airflow?
Cloud/Toolseasy
8
Airflow operators, hooks, and scheduler functionality?
Cloud/Toolseasy
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