task track started

airflow.cfg 
.../...
# Celery task will report its status as 'started' when the task is executed by a worker.
# This is used in Airflow to keep track of the running tasks and if a Scheduler is restarted
# or run in HA mode, it can adopt the orphan tasks launched by previous SchedulerJob.
task_track_started = True
.../...

See also

• Celery Broker, Celery Executor, celery [ list | status | worker | --version | --help ]
• Template:Airflow scheduler
• Apache Airflow, Installation, configuration airflow.cfg, monitoring, Amazon Managed Workflows for Apache Airflow (MWAA), airflow, Airflow Scheduler, providers, Workflows, Airflow executors, Airflow versions, Datadog integration