DagRunState/ task instance state - adding new state - > "timing out"

[daniellasrydy]

Hi

I am dealing with long-running tasks which may fail dag_run after X threshold (execution_timeout) without finish.
Currently, I need to query failed dag_runs or tasks and its start date for getting all dag_runs which failed because timeout

I suggest to create new DagRunState or task state that indicates about that , for simplifying the monitoring and alerting