Required. The Dataproc region in which to handle the request.
Optional. A unique id used to identify the request. If the
server receives two [CreateClusterRequest][google.cloud.datapr
oc.v1beta2.CreateClusterRequest] requests with the same id,
then the second request will be ignored and the first
google.longrunning.Operation][google.longrunning.Operation]
created and stored in the backend is returned. It is
recommended to always set this value to a UUID <https://en.wi
kipedia.org/wiki/Universally_unique_identifier>_. The id
must contain only letters (a-z, A-Z), numbers (0-9),
underscores (), and hyphens (-). The maximum length is 40
characters.
