Answer-first summary for fast verification
Answer: The number of master nodes cannot be changed once a cluster is created.
The correct answer is that the number of master nodes in a Cloud Dataproc cluster cannot be changed once the cluster is created. For more details, refer to the official documentation: [https://cloud.google.com/dataproc/docs/guides/manage-cluster](https://cloud.google.com/dataproc/docs/guides/manage-cluster).
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A team of data scientists relies heavily on jobs running in a Cloud Dataproc cluster and wishes to enhance availability by increasing the number of master nodes from 1 to 2. Which command should they use?
A
gcloud dataproc nodes add-master
B
The number of master nodes cannot be changed once a cluster is created.
C
gcloud dataproc create master-nodes
D
gcloud dataproc master-nodes
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