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Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 652 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03
Question #: 652
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company has a large data workload that runs for 6 hours each day. The company cannot lose any data while the process is running. A solutions architect is designing an Amazon EMR cluster configuration to support this critical data workload.

Which solution will meet these requirements MOST cost-effectively?

  • A. Configure a long-running cluster that runs the primary node and core nodes on On-Demand Instances and the task nodes on Spot Instances.
  • B. Configure a transient cluster that runs the primary node and core nodes on On-Demand Instances and the task nodes on Spot Instances.
  • C. Configure a transient cluster that runs the primary node on an On-Demand Instance and the core nodes and task nodes on Spot Instances.
  • D. Configure a long-running cluster that runs the primary node on an On-Demand Instance, the core nodes on Spot Instances, and the task nodes on Spot Instances.
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Suggested Answer: B 🗳️
by potomac at Nov. 7, 2023, 3:58 p.m.
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louisaok
Highly Voted 1 year, 4 months ago
Relax man. take a break since you have made this far so far.
upvoted 53 times
AWSSURI
7 months ago
Rest at the end NOT in the middle -- Kobe Bryant
upvoted 8 times
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potomac
Highly Voted 1 year, 4 months ago
Selected Answer: B
A transient cluster provides cost savings because it runs only during the computation time, and it provides scalability and flexibility in a cloud environment. Option C (transient cluster with On-Demand primary node and Spot core and task nodes) exposes the core nodes to Spot Instance interruptions, which may not be acceptable for a workload that cannot lose any data.
upvoted 14 times
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EllenLiu
Most Recent 3 months, 1 week ago
Selected Answer: B
take a break and feel better now. thanks for encouraging with each other! daily batch handling within several hours => transient cluster data-critical application => spot for task node only
upvoted 1 times
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awsgeek75
1 year, 2 months ago
Selected Answer: B
AD are long-running so don't fit in with 6 hours schedule BC are ideal for scheduled EMR activities C is wrong as running core node on Spot instance has a risk of data loss https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-master-core-task-nodes.html B is correct because primary, core will be stable on on-demand as recommended by AWS and task can go on spot instances as task nodes are short lived by nature anyway
upvoted 6 times
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pentium75
1 year, 2 months ago
Selected Answer: B
"Long-running cluster" = runs until you shut it down "Transient cluster" = runs until the workload is completed This runs only 6 hours each day -> transient -> B or C "Cannot lose any data while the process is running" -> Primary and core nodes cannot be Spot instances -> A or B https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-plan-longrunning-transient.html https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-plan-instances-guidelines.html
upvoted 10 times
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TariqKipkemei
1 year, 3 months ago
Selected Answer: B
Cannot loose data = ondemand primary + core nodes Save on costs = spot task nodes Runs for 6 hours = transient cluster
upvoted 6 times
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SHAAHIBHUSHANAWS
1 year, 3 months ago
A https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-plan-instances-guidelines.html It's long running and no data loss is needed.
upvoted 2 times
pentium75
1 year, 2 months ago
The link says you can lose data if you are running a transient cluster WITH ONLY Spot instances. "Long-running" = runs until you shut it down, "Transient" = Runs until the workload is completed
upvoted 1 times
whiterick
1 year, 2 months ago
Option A suggests a long-running cluster, which continues to run until manually terminated. This means that even if tasks are rerouted due to Spot Instance interruptions, the cluster itself remains active, allowing the rerouted tasks to complete on other nodes. Option B suggests a transient cluster, which is terminated after all steps are completed. If the Spot Instances are interrupted and tasks are not completed, the cluster might still terminate after the steps are deemed complete, potentially leading to incomplete processing of data.
upvoted 1 times
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MFKang
1 year, 4 months ago
Get up Stand up
upvoted 3 times
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