jack created AIRFLOW-4927:
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Summary: Airflow task stuck in Scheduled mode due to pool not
existed
Key: AIRFLOW-4927
URL: https://issues.apache.org/jira/browse/AIRFLOW-4927
Project: Apache Airflow
Issue Type: Bug
Components: core
Affects Versions: 1.10.4
Reporter: jack
When operator uses pool like the scheduler schedule the task only when slot is
available.
We encounter a case where one of our developers did:
{code:java}
op = CustomOperator(
task_id='id',
conn_id='con',
pool='file_default'){code}
However file_default was not defined in pools.
It took us hours to find that the pool does not exist. No error nor any
indication was given.
Airflow should raise broken DAG exception if trying to use pool that doesn't
exist. Much like it does for accessing Variable that doesn't exist.
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