EmrAddStepsOperator does not have an input for Execution Role ARN

[rankol]

I've attempted to create this as a feature request but when I submit the Issue I get re-directed to a webpage that says This site can't be reached so I'm just posting this here for now.

The EmrAddStepsOperator does not have an input for Execution role ARNs.

airflow/airflow/providers/amazon/aws/operators/emr.py

Line 34 in bf14d14

class EmrAddStepsOperator(BaseOperator):

The Boto3 EMR client does have an option for this input.
https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/emr.html#EMR.Client.add_job_flow_steps

EMR version 6.7 recently released which allows for Execution role ARNs to be used with EMR job steps. This seems to be done at the CLI with --execution-role-arn = $RUNTIME_ROLE_ARN
https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-steps-runtime-roles.html

This would allow for EMR jobs to use an execution role for IAM permissions instead of using the EC2 instance profile attached to the cluster for permissions. Other EMR operators like the container operator or serverless operator allow for execution role ARNs to be passed in.

[Taragolis]

@rankol I would suggest two ways

Option 1 Quick:
Create own operator based on existed Operator in amazon-provider and make some changed, you just need add additional argument to __init__ and add change one line in execute method of operator.

airflow/airflow/providers/amazon/aws/operators/emr.py

Lines 111 to 113 in 648e224

	response = emr.add_job_flow_steps(JobFlowId=job_flow_id, Steps=steps)

Option 2:
Contribute to apache-airflow-providers-amazon. Basically need to make the same changes and create some tests.