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Answer: gcloud dataproc clusters update with the --num-secondary-workers parameter
To adjust the number of preemptible (secondary) worker nodes in a Cloud Dataproc cluster, use the `gcloud dataproc clusters update` command with the `--num-secondary-workers` parameter. This allows for flexibility in managing your cluster's resources post-creation. The `--num-workers` parameter is reserved for modifying the count of primary (non-preemptible) workers, and there is no `--preemptible-vms` parameter in the `gcloud dataproc` command. For more details, refer to the [Google Cloud SDK documentation](https://cloud.google.com/sdk/gcloud/reference/dataproc/clusters/update).
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Your Cloud Dataproc cluster is under a heavier workload than usual, and you're considering adding several preemptible VMs as worker nodes to handle the load. Which command should you use?
A
gcloud dataproc clusters update with the --num-workers parameter
B
The number of preemptible nodes in a Cloud Dataproc cluster cannot be changed once the cluster is created.
C
gcloud dataproc clusters update with the --preemptible-vms parameter
D
gcloud dataproc clusters update with the --num-secondary-workers parameter
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