A data engineer needs to schedule a workflow that runs several AWS Glue jobs daily but does not require jobs to start or finish at a precise time. Which Glue execution-class choice is the most cost-effective for running these jobs?
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Correct answer: Choose the FLEX execution class in the Glue job properties..
Why this is the answer
The FLEX execution class is the most cost-effective option because it is designed for non-urgent, non-time-sensitive workloads, offering up to a 30% discount compared to the Standard execution class. This aligns perfectly with the requirement that jobs do not need to start or finish at a precise time. Using the Spot Instance type is not a direct Glue execution class choice but rather an underlying compute option that Glue manages; FLEX leverages Spot Instances for cost savings. The STANDARD execution class is more expensive as it provides dedicated resources for time-sensitive jobs. Choosing the latest GlueVersion primarily affects performance and features, not directly the cost-effectiveness for this specific scenario.
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