aviemzur commented on a change in pull request #6898: [AIRFLOW-6432] Raise
appropriate exception in EmrAddStepsOperator when using job_flow_name and no
cluster is found by that name
URL: https://github.com/apache/airflow/pull/6898#discussion_r362238595
##########
File path: airflow/contrib/operators/emr_add_steps_operator.py
##########
@@ -68,12 +68,14 @@ def __init__(
self.steps = steps
def execute(self, context):
- emr = EmrHook(aws_conn_id=self.aws_conn_id).get_conn()
+ emr_hook = EmrHook(aws_conn_id=self.aws_conn_id)
- job_flow_id = self.job_flow_id
+ emr = emr_hook.get_conn()
+ job_flow_id = self.job_flow_id or
emr_hook.get_cluster_id_by_name(self.job_flow_name,
+
self.cluster_states)
if not job_flow_id:
- job_flow_id = emr.get_cluster_id_by_name(self.job_flow_name,
self.cluster_states)
+ raise AirflowException(f'No cluster found for name:
{self.job_flow_name}')
Review comment:
If you ask for a cluster that doesn't exist it returns `None`
https://github.com/apache/airflow/blob/master/airflow/contrib/hooks/emr_hook.py#L52-L59
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