Your question is Spark Cluster Design for 100 GB. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Given 100 GB of data, design a Spark cluster: number of nodes, cluster size, number of tasks, stages, partitions, and execution flow.
Asked in the Round 1 stage. Focus on how you would size the cluster and explain the Spark execution plan end to end. Keep your answer practical, including assumptions about file format, partitioning, and shuffle behavior.