Your question is MapReduce JSON Analysis. 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).
Perform JSON analysis using MapReduce.
Asked in the Onsite stage. System design round conducted by an interviewer outside the embedded domain. Focus on how you would process large JSON datasets reliably at scale, including malformed records and evolving schemas.