フリー問題

問題文

A logistics company runs Spark on Kubernetes. During a job, an operator watches the namespace and sees new objects appear a few seconds after the submission, then disappear when the job finishes. What did the driver request?

選択肢

1. The driver asks the cluster for spare schedulers and gives each of them a slice of the work.
2. The driver asks the cluster for persistent volumes and gives each of them a slice of the work.
3. The driver asks the cluster for extra executors and gives each of them a slice of the work.
4. The driver asks the cluster for duplicate drivers and gives each of them a slice of the work.