mrkm4ntr commented on a change in pull request #20647:
URL: https://github.com/apache/airflow/pull/20647#discussion_r795421083



##########
File path: airflow/providers/google/cloud/operators/kubernetes_engine.py
##########
@@ -335,8 +339,16 @@ def __init__(
                 stacklevel=2,
             )
             is_delete_operator_pod = False
+        if in_cluster:
+            warnings.warn(
+                f"You should not set parameter `in_cluster` `True` in class 
{self.__class__.__name__}. "
+                "This operator uses Google Service Account(GSA) not Kubernetes 
Service Account(KSA)."
+                "If you can use KSA with in_cluster `True`, you should use 
KubernetesPodOperator directly.",
+                DeprecationWarning,
+                stacklevel=2,
+            )
 
-        super().__init__(is_delete_operator_pod=is_delete_operator_pod, 
**kwargs)
+        super().__init__(is_delete_operator_pod=is_delete_operator_pod, 
in_cluster=in_cluster, **kwargs)

Review comment:
       I cared about the users who are using GKEPodOperator with KSA 
accidentally. Those users should KubernetesPodOperator instead of 
GKEPodOperator but I'd not like to introduce a breaking change.
   If we don't have to care about those users, we can just set 
`in_cluster=False` directly.




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