Repository: incubator-airflow Updated Branches: refs/heads/master 61fb6a5e5 -> e63cb1fce
Add pool upgrade issue description Project: http://git-wip-us.apache.org/repos/asf/incubator-airflow/repo Commit: http://git-wip-us.apache.org/repos/asf/incubator-airflow/commit/e63cb1fc Tree: http://git-wip-us.apache.org/repos/asf/incubator-airflow/tree/e63cb1fc Diff: http://git-wip-us.apache.org/repos/asf/incubator-airflow/diff/e63cb1fc Branch: refs/heads/master Commit: e63cb1fced9517397b7db9e2849bf01fcca63902 Parents: 61fb6a5 Author: Bolke de Bruin <[email protected]> Authored: Thu Feb 9 16:10:17 2017 +0100 Committer: Bolke de Bruin <[email protected]> Committed: Thu Feb 9 16:10:17 2017 +0100 ---------------------------------------------------------------------- UPDATING.md | 6 ++++++ 1 file changed, 6 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/incubator-airflow/blob/e63cb1fc/UPDATING.md ---------------------------------------------------------------------- diff --git a/UPDATING.md b/UPDATING.md index 337b711..b56aca8 100644 --- a/UPDATING.md +++ b/UPDATING.md @@ -14,6 +14,12 @@ Systemd unit files have been updated. If you use systemd please make sure to upd > Please note that the webserver does not detach properly, this will be fixed > in a future version. +### Tasks not starting although dependencies are met due to stricter pool checking +Airflow 1.7.1 has issues with being able to over subscribe to a pool, ie. more slots could be used than were +available. This is fixed in Airflow 1.8.0, but due to past issue jobs may fail to start although their +dependencies are met after an upgrade. To workaround either temporarily increase the amount of slots above +the the amount of queued tasks or use a new pool. + ### Less forgiving scheduler on dynamic start_date Using a dynamic start_date (e.g. `start_date = datetime.now()`) is not considered a best practice. The 1.8.0 scheduler is less forgiving in this area. If you encounter DAGs not being scheduled you can try using a fixed start_date and
