Awesome! Great to see the consistent progress week over week. Thank you all for the wonderful teamwork,
Vikram On Thu, Feb 6, 2025 at 11:28β―AM Jarek Potiuk <ja...@potiuk.com> wrote: > wooohooo..... ! > > On Thu, Feb 6, 2025 at 8:20β―PM Utkarsh Sharma > <utkarsh.sha...@astronomer.io.invalid> wrote: > > > Dear Airflow Community, > > > > I am thrilled to announce the availability of *Apache Airflow > 3.0.0.alpha2* > > 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*βthat 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.alpha2? > > > > Apache 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. > > - *DAG Bundles* ensure 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. > > - 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*, *multi-language support*, > enhanced > > security, and better dependency management. > > - The *Edge Executor* 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, see the 3.0.0.alpha2 > release > > notes > > < > > > https://github.com/apache/airflow/blob/3.0.0a2/RELEASE_NOTES.rst#airflow-300alpha2-2025-01-31 > > > > > . > > > > For a list of the breaking changes, visit: Apache Airflow Breaking > Changes > > <https://cwiki.apache.org/confluence/x/9pCMEw> > > *Known Issues in 3.0.0.alpha2* *AIP-72 - Task Execution Interface* > > > > - *DB isolation in tasks* is not enforced yet. > > - *KubernetesExecutor* does not yet use the Task Execution Interface. > > - The following do not work on *LocalExecutor* or *CeleryExecutor*: > > - Skip-based tasks (e.g. branch or skip operators). > > - 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. > > - *FastAPI API server* (including the new UI and public API) does not > > yet have authentication. > > - UI performance may degrade with a *large number of DAGs* or *very > big > > DAGs*. > > - Notable areas of functionality *not yet implemented* in the UI: > > - DAG Versioning, Data Assets, Backfills, 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 *DAG Bundles*, but currently, the DAG processor always > > parses all bundles. > > > > *AIP-82 - Event-Based Scheduling* > > > > - Some triggers (e.g., *file-based triggers*) may lead to *duplicate > DAG > > runs*. > > > > *Where to Get It?* > > > > The *alpha snapshot* is available at: Apache Airflow 3.0.0.alpha2 > > Distribution <https://dist.apache.org/repos/dist/dev/airflow/3.0.0a2/> > > > > - *Binary Python "sdist" snapshot:* apache-airflow-3.0.0a2-bin.tar.gz > > - *Binary Python wheel snapshot:* > > apache_airflow-3.0.0a2-py3-none-any.whl > > > > 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 > > - apache-airflow-providers-celery > > > > These *are also not published to PyPI*. > > *Public Keys & Verification* > > > > Public keys for verification are available at: Apache Airflow KEYS > > <https://www.apache.org/dist/airflow/KEYS> > > *Installation Instructions* > > > > To build a virtualenv that installs this alpha release and required > > packages: > > > > uv venv > > > > uv pip install --find-links > > https://dist.apache.org/repos/dist/dev/airflow/3.0.0a2/ \ > > apache-airflow==3.0.0a2 \ > > apache-airflow-task-sdk==1.0.0a2 \ > > apache-airflow-providers-standard==0.1.0a2 \ > > apache-airflow-providers-fab==2.0.0a2 \ > > apache-airflow-providers-celery==3.11.0a2 > > > > *Changes Youβll Need to Consider* > > > > - The *standalone DAG processor* is now required, start it with: > > > > airflow dag-processor > > > > - The new UI and public API start with: > > > > airflow fastapi-api > > > > UI is available at http://localhost:9091/webapp. > > - Depending on your deployment setup, you may need to set the > [workers] > > execution_api_server_url config option. Default: > > > > 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 > > >
