- Added serialized DAG persistence to the DB for better webserver scalability and introduced several new operators (Docker Swarm, Dataproc with custom images, GcsToGDrive, Slack blocks, etc.).
- Enhanced integrations and hooks with new capabilities such as custom AWS Lambda config, automatic EKS token refresh, optional components for Dataproc, and extended support for Azure, GCP, and S3 operators.
- Implemented numerous improvements and bug fixes across UI, logging, scheduler, hook reliability, and security (e.g., basic auth for Druid, proxy fix middleware, DB disconnect handling).
Airflow 1.10.7, 2019-12-24
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