This quirk is specific to Apache Airflow, and it’s important to remember - especially if you’re using default variables and macros. This happens because Airflow can’t ensure that all of the data from 2:00 PM - 3:00 PM is present until the end of that hourly interval. An hourly DAG, for example, will execute its 2:00 PM run when the clock strikes 3:00 PM. By design, an Airflow DAG will run at the end of its schedule_interval.Īs stated above, an Airflow DAG will execute at the completion of its schedule_interval, which means one schedule_interval AFTER the start date.The two most important things to keep in mind about scheduling are: The functionality of the Airflow Scheduler can be counterintuitive, but you’ll get the hang of it. Huh - what happened to the 3pm run?īefore you jump into debugging mode (you wouldn’t be the first), rest assured that this is expected behavior. You hop on at 3:30pm to find that your DAG did in fact run, but your logs indicate that there was only one recorded execution at 2pm. You set an hourly interval beginning today at 2pm, setting a reminder to check back in a couple of hours. You wrote a new DAG that needs to run every hour and you’re ready to turn it on. Your DAG Isn’t Running at the Expected Time
If your team is running Airflow 1 and would like help establishing a migration path, reach out to us.
#Airflow dag logging upgrade#
We strongly encourage your team to upgrade to Airflow 2.x. Note: Following the Airflow 2.0 release in December of 2020, the open-source project has addressed a significant number of pain points commonly reported by users running previous versions. Whether you’re new to Airflow or an experienced user, check out this list of common errors and some corresponding fixes to consider. In an effort to provide best practices and expand on existing resources, our team at Astronomer has collected some of the most common issues we see Airflow users face. It’s an incredibly flexible tool that powers mission-critical projects, from machine learning model training to traditional ETL at scale, for startups and Fortune 50 teams alike.Īirflow’s breadth and extensibility, however, can make it challenging to adopt - especially for those looking for guidance beyond day-one operations. Streamline your data pipeline workflow and unleash your productivity, without the hassle of managing Airflow.Īpache Airflow is the industry standard for workflow orchestration.
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