How should I run task with "owner" not shell owner in AIRFLOW - owner

Question

My task code is the following.
from airflow.models import DAG
from airflow.operators import BashOperator
from datetime import datetime, timedelta
rootdir = "/tmp/airflow"
default_args = {
'owner': 'max',
'depends_on_past': False,
'start_date': datetime.now(),
'email': ['max#test.com'],
'email_on_failure': False,
'email_on_retry': False,
'retries': 1,
'retry_delay': timedelta(minutes=5),
}
dag = DAG('test3', default_args=default_args,
schedule_interval='*/2 * * * *')
t1 = BashOperator(
task_id='test3-task1',
bash_command='date >> {rootdir}/test3-task1.out'.format(rootdir=rootdir),
owner='max',
dag=dag)
t2 = BashOperator(
task_id='test3-task2',
bash_command='whoami',
retries=3,
owner='max',
dag=dag)
Then I run the command "airflow test test3 test3-task2 2016-07-25" with 'airflow' user of linux. The result of output "whoami" is "airflow".
But I hope that the output result is "owner" of task.
What is my wrong ?
Thanks
the following is the output result.
[2016-07-25 11:22:37,716] {bash_operator.py:64} INFO - Temporary script location :/tmp/airflowtmpoYNJE8//tmp/airflowtmpoYNJE8/test3-task2U1lpom
[2016-07-25 11:22:37,716] {bash_operator.py:65} INFO - Running command: whoami
[2016-07-25 11:22:37,722] {bash_operator.py:73} INFO - Output:
[2016-07-25 11:22:37,725] {bash_operator.py:77} INFO - airflow
[2016-07-25 11:22:37,725] {bash_operator.py:80} INFO - Command exited with return code 0

Answer 1

You can use the "run_as_user" parameter under default_args
default_args = {
'owner': 'max',
'depends_on_past': False,
'start_date': datetime.now(),
'email': ['max#test.com'],
'email_on_failure': False,
'email_on_retry': False,
'retries': 1,
'retry_delay': timedelta(minutes=5),
'run_as_user': 'max'
}

Answer 2

It doesn't look like what you're trying to do is supported. Looking at the source code for both the bash_operator and the BaseOperator, neither makes any attempt to change users before executing the task, unfortunately.