Welcome to your interview.
The question is on your right: Apache Spark in a DevOps Context. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
How would you explain your experience with Apache Spark and big data tooling in a DevOps context?