- ✅ SMTP STARTTLS now validates server certificates by default; set `email.ssl_context="none"` to retain previous non‑validating behavior.
- ✅ UI search filters switched to prefix‑based matching for index use, with a new “Match anywhere” toggle to revert to substring matching.
- ✅ Triggerer race condition and deadlock fixed, added a watchdog health‑check config, and custom DeadlineReference classes must now be registered via AirflowPlugin (breaking change).
Apache Airflow 3.2.2
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Expanded asset partitioning with new RollupMapper, FanOutMapper, FixedKeyMapper, SegmentWindow and runtime timetable support for dynamic partition keys.