Hi @kevinc! Correction here that you CAN trigger a DAG run in the past and specify an execution date via the Airflow Web UI on Airflow versions 1.10.3+ (on Astronomer Cloud).
You should see something like this:
If you’re running vanilla Airflow, keep the following bugs native to Airflow and specific to this feature in mind:
- https://issues.apache.org/jira/browse/AIRFLOW-3191
- https://issues.apache.org/jira/browse/AIRFLOW-4871
Upgrading Versions
To upgrade to 1.10.3 on Astronomer, throw the following in your Dockerfile:
FROM astronomerinc/ap-airflow:0.9.2-1.10.3-onbuild
Backfilling Guidelines
If you’re looking for wider backfilling guidelines, go here.