Subham-KRLX opened a new pull request, #64156:
URL: https://github.com/apache/airflow/pull/64156
This PR provides a manual backport of #63986 to v3-1-test to fix a critical
TypeError crash in the FAB UI (/users/list) during concurrent API schema
requests. The issue was caused by non-thread-safe global mocks in
HookMetaService which corrupted FAB's class hierarchy.
The fix involves:
Localizing Mocks: Moving mocking logic locally within discovery methods to
prevent global namespace hijacking.
UnboundField Introspection: Naturally introspecting UnboundField variables
when FAB is installed to extract parameters safely.
Compatibility Fixes: Making MockOptional callable and adapting the new
introspection logic to use Param from airflow.sdk as required by the v3-1-test
environment.Conflict Resolution A merge conflict in connections.py was resolved
by adapting the main branch introspection logic to use the Param class instead
of SerializedParam.
Related Issues
related: #63986 (Manual backport)
closes: #63982 (Original crash issue)
Was generative AI tooling used to co-author this PR?
Yes — Gemini (conflict resolution, and PR description)
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