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Exam AWS Certified Solutions Architect - Professional topic 1 question 952 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional
Question #: 952
Topic #: 1
[All AWS Certified Solutions Architect - Professional Questions]

A solutions architect needs to review the design of an Amazon EMR cluster that is using the EMR File System (EMRFS). The cluster performs tasks that are critical to business needs. The cluster is running Amazon EC2 On-Demand Instances at all times for all task, master, and core nodes. The EMR tasks run each morning, starting at 1:00 AM. and take 6 hours to finish running. The amount of time to complete the processing is not a priority because the data is not referenced until late in the day.

The solutions architect must review the architecture and suggest a solution to minimize the compute costs.

Which solution should the solutions architect recommend to meet these requirements?

  • A. Launch all task, master, and core nodes on Spot Instances in an instance fleet. Terminate the duster, including all instances, when the processing is completed.
  • B. Launch the master and core nodes on On-Demand Instances. Launch the task nodes on Spot Instances in an instance fleet. Terminate the cluster, including all instances, when the processing is completed. Purchase Compute Savings Plans to cover the On-Demand Instance usage.
  • C. Continue to launch all nodes on On-Demand Instances. Terminate the cluster, including all instances, when the processing is completed. Purchase Compute Savings Plans to cover the On-Demand Instance usage
  • D. Launch the master and core nodes on On-Demand Instances. Launch the task nodes on Spot Instances in an instance fleet. Terminate only the task node instances when the processing is completed. Purchase Compute Savings Plans to cover the On-Demand Instance usage.
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Suggested Answer: D 🗳️
by masetromain at Nov. 29, 2022, 2:35 p.m.
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Zinnia_Wang
4 months ago
Selected Answer: B
EMRFS is designed for S3 integration. You should delete the cluster to save cost.
upvoted 1 times
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WhyIronMan
9 months, 2 weeks ago
Selected Answer: D
I agree with D
upvoted 1 times
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3a632a3
1 year, 3 months ago
Selected Answer: D
This solutions architect is not very good. Basically, the compute savings plan eliminates any other options except D. The other thing that leads to D is "business critical" and no mention of capacity reservations to ensure on-demand capacity. BTW, EMR is very easy to shutdown and start back up even with a complex cross realm trust configured with AD. You can save a lot of money by doing this and all of your data is safely stored in S3.
upvoted 1 times
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SkyZeroZx
1 year, 10 months ago
Selected Answer: D
I agree with D. The cluster performs tasks that are critical to business needs so we can't turn off cluster. but not seems for Compute savnings plans in this case
upvoted 2 times
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Roontha
1 year, 10 months ago
Answer : B https://aws.amazon.com/blogs/big-data/optimize-amazon-emr-costs-with-idle-checks-and-automatic-resource-termination-using-advanced-amazon-cloudwatch-metrics-and-aws-lambda/
upvoted 2 times
vn_thanhtung
1 year, 8 months ago
Terminate the cluster, including all instances, when the processing is completed. No way ?
upvoted 1 times
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rbm2023
1 year, 11 months ago
Selected Answer: D
I don´t think we should terminate the on demand instances considering the job is executed daily. this might generate additional costs and we are already using a compute savings plan for those Reserved EC2.
upvoted 2 times
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zozza2023
2 years, 3 months ago
Selected Answer: D
I agree with D
upvoted 1 times
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Vash2303
2 years, 3 months ago
Selected Answer: B
Terminate when no longer needed.
upvoted 2 times
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ggrodskiy
2 years, 4 months ago
Correct D.
upvoted 3 times
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masetromain
2 years, 5 months ago
Selected Answer: D
I agree with D. The cluster performs tasks that are critical to business needs so we can't turn off cluster.
upvoted 2 times
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