Problemsby GlyphApache Airflow backfills are slow and risky
4 posts from 4 people4d activeFading, +0 this week
Posts per day
The posts behind it
HA schedulers can start backfill DagRuns out of order with max_active_runs=1
### Under which category would you file this issue? Airflow Core ### Apache Airflow version 3.3.2 ### What happened and how to reproduce it? Two scheduler instances can promote a later backfill DagRun before earlier queued runs even when the backfill's `max_active_runs=1` and...
Pick a Dag's latest run by run_after consistently in the UI and REST API
### Description The latest run of a Dag is picked in three different ways across these views. | Where | How the latest run is picked | |---|---| | Dashboard Failed Dags count (`ui/dashboard.py` `dag_stats`) | `logical_date DESC`, runs without a logical date skipped | | Dags list...
Calendar view rework
### Description The issue is for covering the work of changing the design of the calendar view. We will start with a static mockup to get feedback from the community and then move on with the implementation. These are the current pages ### Use case/motivation The current...
Cancelling a backfill leaves its runs unschedulable forever
### Under which category would you file this issue? Airflow Core ### Apache Airflow version 3.2.2 ### What happened and how to reproduce it? After a backfill is cancelled, clearing one of its DAG runs sends the run back to `queued`, where it stays. In this case it had still not...
Companies and products named
About this problem
Evidence
4 posts from 4 people in 1 place, about 1 a week over 61 days. Mostly on apache/airflow. Tools named alongside: GitHub, Docker, Kubernetes, PostgreSQL.
Frustration Frustration 0 of 3· Seen on GitHub issues
How it was grouped
Posts that state a pain and match the "backfills" rule about Apache Airflow. First post Aug 31, 2026, latest Oct 30, 2026. Corroborated: 3 or more posts from 2 or more people or places. Method
The same problem elsewhere
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History