MaximeJumelle commented on issue #15652:
URL: https://github.com/apache/airflow/issues/15652#issuecomment-831967261
I think this is related to the upgading between Airflow 1.x and Airflow 2.x,
since I used the following code on Airflow 1.x.
```
task_create_dataproc = DataprocClusterCreateOperator(
task_id='create_dataproc',
cluster_name="cluster-{{ ds_nodash }}",
num_workers=2,
zone="us-central1-a",
master_machine_type='n1-standard-4',
worker_machine_type='n1-standard-4',
idle_delete_ttl=3600,
dag=dag
)
```
I was confused because it asked me to put `region` instead of `zone` in
versions 2.x, and I didn't see the change between region and zone because on
the [example page for
Dataproc](https://airflow.apache.org/docs/apache-airflow-providers-google/stable/_modules/airflow/providers/google/cloud/example_dags/example_dataproc.html),
there is a `ZONE` variable defined (but never used).
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