Woooho! On Sat, Feb 1, 2025 at 2:21 AM Vikram Koka <vik...@astronomer.io.invalid> wrote:
> This is fantastic! Congratulations to everyone on this huge milestone. > Thank you all for your hard work in getting us to this point. I am truly > proud to be a part of this team. > > Best regards, > Vikram > > > On Fri, Jan 31, 2025 at 5:17 PM Jed Cunningham <jedcunning...@apache.org> > wrote: > > > Dear Airflow Community, > > > > I am thrilled to announce the availability of Apache Airflow 3.0.0.alpha1 > > for testing! Airflow 3.0 marks a significant milestone as the first major > > release in over four years, introducing improvements that enhance user > > experience, task execution, and system scalability. > > > > First, a few caveats: > > > > This is an alpha release, so do not run it in production. It may contain > > significant issues, and you will likely need to reset your database > between > > this and subsequent alpha, beta or release candidate versions. (Consider > > yourself warned!) > > > > This release is intended for Airflow developers and early adopters to > test > > the build and start preparing for Airflow 3.0.0. This is not an official > > release—that will happen when we create a release candidate and hold a > > vote. The expected timeline for the first release candidate is the week > of > > 2025-03-31, but we encourage early feedback to help stabilize the > release. > > > > What's new in 3.0.0.alpha1? > > > > Airflow 3.0.0 introduces significant enhancements and breaking changes. > > > > Notable Features > > > > DAG versioning & Bundles > > Airflow now tracks DAG versions, offering better visibility into > historical > > DAG changes and execution states. The introduction of DAG Bundles ensures > > tasks run with the correct code version, even as DAGs evolve. > > > > Modern Web Application > > The UI has been rebuilt using React and a complete API-driven structure, > > improving maintainability and extensibility. It includes a new > > component-based design system and an enhanced information architecture. A > > new React-based plugin system supports custom widgets, improved workflow > > visibility, and integration with external tools. > > > > Task Execution Interface > > Airflow 3.0 adopts a client / server architecture, decoupling task > > execution from the internal meta-database via API-based interaction. This > > allows for remote execution across networks, multi-language support, > > enhanced security, and better dependency management. The Edge Executor > > further enables seamless remote task execution without direct database > > connections. > > > > Data Assets & Asset-Centric Syntax > > Airflow 3.0 enhances dataset management by introducing Data Assets, > > expanding beyond tables and files to include ML models and more. Assets > can > > be explicitly defined using the @asset decorator, simplifying tracking > and > > dependencies. > > > > External Event-Driven Scheduling > > > > Airflow now supports event-driven DAG triggers from external sources like > > message queues. This builds upon dataset scheduling and enhances > > integration with the external data ecosystem. > > > > For a more comprehensive list of new features, please see the 3.0.0apha1 > > release notes: > > > > > https://github.com/apache/airflow/blob/3.0.0a1/RELEASE_NOTES.rst#airflow-300alpha1-2025-01-31 > > > > For a list of the breaking changes, please see visit: > > https://cwiki.apache.org/confluence/x/9pCMEw > > > > Known issues in 3.0.0.alpha1: > > > > - > > > > AIP-72 - Task Execution Interface > > - > > > > DB isolation in tasks is not enforced yet > > - > > > > KubernetesExecutor does not yet use the TaskExecution Interface > > - > > > > The following does not work on LocalExecutor or CeleryExecutor: > > Dynamic Task Mapping, Skip based tasks (e.g. branch or skip > > operators), and > > Task callbacks. > > - > > > > OpenLineage listeners are not yet functional in this alpha release. > > - > > > > AIP-38 - Modern Web Application > > - > > > > The new UI has limited functionality at this time and is still > being > > enhanced until GA. However, feedback on the UX flow is > > appreciated at this > > time. > > - > > > > The underlying FastAPI API server, including the new UI and public > > API, does not yet have auth. > > - > > > > UI may be slow if you have a lot of DAGs or very big DAGs > > - > > > > Notable areas of functionality that are not yet functional in the > UI: > > DAG Versioning, Data Assets, Backfills, and the DAG Gantt View. > > - > > > > AIP-63 - DAG Versioning > > - > > > > Callbacks are not yet working on the DAG Processor (e.g. DAG level > > callbacks) > > - > > > > The concept of a separate `--subdir` in the DAG processor is being > > replaced with separate DAG bundles, but currently the DAG > > processor always > > parses all DAG bundles. > > - > > > > AIP-82 - Event Based Scheduling > > - > > > > Scheduling using some triggers, for example file-based, can lead to > > duplicate DAG runs. > > > > > > Where to get it? > > > > The alpha snapshot is available at: > > https://dist.apache.org/repos/dist/dev/airflow/3.0.0a1/ > > > > - > > > > apache-airflow-3.0.0a1-bin.tar.gz: Binary Python "sdist" snapshot. > > - > > > > apache_airflow-3.0.0a1-py3-none-any.whl: Binary Python wheel snapshot. > > > > > > This snapshot has not been published to PyPI. > > > > Also present are alpha releases for apache-airflow-task-sdk, > > apache-airflow-providers-standard, apache-airflow-providers-fab, and > > apache-airflow-providers-celery, which you will also need for the 3.0.0a1 > > to work. These have also not been published to PyPI. > > > > Public Keys & Verification > > > > Public keys for verification are available at: > > https://www.apache.org/dist/airflow/KEYS > > > > Instructions: > > > > You can build a virtualenv that installs this alpha, and other required > > packages (e.g. task sdk), like this: > > > > ``` > > > > uv venv > > > > uv pip install --find-links > > https://dist.apache.org/repos/dist/dev/airflow/3.0.0a1/ > > apache-airflow==3.0.0a1 apache-airflow-task-sdk==1.0.0a1 > > apache-airflow-providers-standard==0.1.0a1 > > apache-airflow-providers-fab==2.0.0a1 > > apache-airflow-providers-celery==3.11.0a1 > > > > ``` > > > > Below are some of the changes you’ll need to consider in order to run > this > > Alpha release: > > > > - > > > > The standalone DAG processor is now required, and can be started with > > `airflow dag-processor`. > > - > > > > The new UI and public API is started by running `airflow fastapi-api`, > > and the UI is available on port `9091` and path `/webapp`. > > - > > > > Depending on your deployment setup, you may need to set the `[workers] > > execution_api_server_url` config option. This defaults to ` > > http://localhost:9091/execution/` <http://localhost:9091/execution/> > <http://localhost:9091/execution/>. > > > > > > Get Involved > > > > We encourage the community to test this release and report any issues or > > feedback. Your contributions help us ensure a stable and reliable Airflow > > 3.0.0 release. > > > > A huge thank you to all the contributors who have worked on this > milestone > > release! > > > > Best, > > Utkarsh and Jed > > >
