dstandish commented on issue #13263:
URL: https://github.com/apache/airflow/issues/13263#issuecomment-750188878
Better error message:
```
[2020-12-23 11:33:29,740: ERROR/ForkPoolWorker-2] Failed to execute task
daemonic processes are not allowed to have children.
[2020-12-23 11:33:29,750: WARNING/ForkPoolWorker-8] Running <TaskInstance:
my_example_bash_operator.also_run_this 2020-12-23T11:19:39.581233+00:00
[queued]> on host airflow-worker-0.airflow-worker.airflow.svc.cluster.local
[2020-12-23 11:33:29,831: ERROR/ForkPoolWorker-2] Task
airflow.executors.celery_executor.execute_command[72e4178f-d55d-4a0a-9c59-45c6cddd8186]
raised unexpected: AirflowException('Celery command failed on host:
airflow-worker-0.airflow-worker.airflow.svc.cluster.local')
Traceback (most recent call last):
File
"/home/airflow/.local/lib/python3.7/site-packages/celery/app/trace.py", line
412, in trace_task
R = retval = fun(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.7/site-packages/celery/app/trace.py", line
704, in __protected_call__
return self.run(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/executors/celery_executor.py",
line 87, in execute_command
_execute_in_fork(command_to_exec)
File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/executors/celery_executor.py",
line 98, in _execute_in_fork
raise AirflowException('Celery command failed on host: ' +
get_hostname())
airflow.exceptions.AirflowException: Celery command failed on host:
airflow-worker-0.airflow-worker.airflow.svc.cluster.local
[2020-12-23 11:33:29,851: WARNING/ForkPoolWorker-1] Running <TaskInstance:
my_example_bash_operator.runme_0 2020-12-23T11:19:39.581233+00:00 [queued]> on
host airflow-worker-0.airflow-worker.airflow.svc.cluster.local
[2020-12-23 11:33:29,940: ERROR/ForkPoolWorker-8] Failed to execute task
daemonic processes are not allowed to have children.
[2020-12-23 11:33:29,978: ERROR/ForkPoolWorker-1] Failed to execute task
daemonic processes are not allowed to have children.
[2020-12-23 11:33:30,015: ERROR/ForkPoolWorker-8] Task
airflow.executors.celery_executor.execute_command[57945b84-6700-46d9-ad00-03c7cb3e98b3]
raised unexpected: AirflowException('Celery command failed on host:
airflow-worker-0.airflow-worker.airflow.svc.cluster.local')
Traceback (most recent call last):
File
"/home/airflow/.local/lib/python3.7/site-packages/celery/app/trace.py", line
412, in trace_task
R = retval = fun(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.7/site-packages/celery/app/trace.py", line
704, in __protected_call__
return self.run(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/executors/celery_executor.py",
line 87, in execute_command
_execute_in_fork(command_to_exec)
File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/executors/celery_executor.py",
line 98, in _execute_in_fork
raise AirflowException('Celery command failed on host: ' +
get_hostname())
airflow.exceptions.AirflowException: Celery command failed on host:
airflow-worker-0.airflow-worker.airflow.svc.cluster.local
[2020-12-23 11:33:30,042: ERROR/ForkPoolWorker-1] Task
airflow.executors.celery_executor.execute_command[f2b39878-d19b-4da1-bc2c-1460f384382e]
raised unexpected: AirflowException('Celery command failed on host:
airflow-worker-0.airflow-worker.airflow.svc.cluster.local')
Traceback (most recent call last):
File
"/home/airflow/.local/lib/python3.7/site-packages/celery/app/trace.py", line
412, in trace_task
R = retval = fun(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.7/site-packages/celery/app/trace.py", line
704, in __protected_call__
return self.run(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/executors/celery_executor.py",
line 87, in execute_command
_execute_in_fork(command_to_exec)
File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/executors/celery_executor.py",
line 98, in _execute_in_fork
raise AirflowException('Celery command failed on host: ' +
get_hostname())
airflow.exceptions.AirflowException: Celery command failed on host:
airflow-worker-0.airflow-worker.airflow.svc.cluster.local
[2020-12-23 11:33:32,303: INFO/MainProcess] Events of group {task} enabled
by remote.
```
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