theister commented on issue #18501:
URL: https://github.com/apache/airflow/issues/18501#issuecomment-984785114
Short update:
I was able to reproduce the problem using the following minimal example on
`2.0.2`
```
from datetime import datetime
from airflow import DAG
from airflow.operators.dummy import DummyOperator
from airflow.operators.bash import BashOperator
with DAG(
"debug-long-replay-dag",
schedule_interval="0 0 * * *",
start_date=datetime(2020, 1, 1),
max_active_runs=10,
catchup=True,
) as long_dag:
initial_task = DummyOperator(task_id="initial-task")
sleep_task = BashOperator(bash_command="sleep 300",
task_id="sleep-5-mins")
initial_task >> sleep_task
with DAG(
"debug-frequent-dag",
schedule_interval="*/1 * * * *",
start_date=datetime(2021, 1, 1),
catchup=False,
) as hf_dag:
sleep_task = BashOperator(bash_command="sleep 30",
task_id="sleep-30-sec")
```
We're currently upgrading our instances to 2.2.2, and I can no longer
reproduce it on the new version 🚀
Clearing task instances for a large number of dag runs now sets all DagRuns
to the newly introduced `"queued"` DagRun status, and the scheduler no longer
is starved out.
@vlieven @leonsmith please check if 2.2.2 solves it for you, too.
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