Which nodes should the Specialist launch on Spot Instances?

By:
In: MLS-C01
Tagged:
With: 1 Comment
A Machine Learning Specialist is planning to create a long-running Amazon EMR cluster.The EMR cluster will have 1 master node, 10 core nodes, and 20 task nodes.To save on costs, the Specialist will use Spot Instances in the EMR cluster.

Which nodes should the Specialist launch on Spot Instances?

Master node

Any of the core nodes

Any of the task nodes

Both core and task nodes

Explanations:

The master node is essential for managing the EMR cluster, and if it fails, the entire cluster would be disrupted. It should not be launched as a Spot Instance.

Core nodes store HDFS data and run essential tasks. Losing core nodes would cause data loss or cluster failure, so they should not be launched as Spot Instances.

Task nodes are transient and can be terminated without affecting the overall operation of the cluster. They are ideal candidates for Spot Instances, which are cheaper but can be interrupted.

Core nodes should not be launched as Spot Instances due to their critical role in the cluster. Task nodes, however, are suitable for Spot Instances. Hence, the answer is incorrect.

2025-10-03

1 Comment

  1. William
    Author

    It seems to me that the answer is:
    Any of the task nodes

Leave a Reply

Your email address will not be published. Required fields are marked *

8 + 20 =