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Fix async engine datetimes being shifted on non-UTC MySQL servers - #76505
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The async engine skipped the connection setup the sync engine gets, so its MySQL sessions kept the server time zone and stored task heartbeats and audit log rows shifted by the server's UTC offset.
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Backport successfully created: v3-4-testNote: As of Merging PRs targeted for Airflow 3.X In matter of doubt please ask in #release-management Slack channel.
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… servers (apache#76505) The async engine skipped the connection setup the sync engine gets, so its MySQL sessions kept the server time zone and stored task heartbeats and audit log rows shifted by the server's UTC offset. (cherry picked from commit 494f65e) Co-authored-by: Jason(Zhe-You) Liu <68415893+jason810496@users.noreply.github.com>
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… servers (apache#76505) The async engine skipped the connection setup the sync engine gets, so its MySQL sessions kept the server time zone and stored task heartbeats and audit log rows shifted by the server's UTC offset. (cherry picked from commit 494f65e) Co-authored-by: Jason(Zhe-You) Liu <68415893+jason810496@users.noreply.github.com>
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related: #76416 (comment)
The async engine skipped the connection setup the sync engine gets, so its MySQL sessions use the server time zone and every datetime it writes or reads is shifted by the server's UTC offset. On a
+08:00MySQL 8 server, task heartbeats (async since #67800) and audit log rows (#76416) are stored 8h early. This also turns on SQLite foreign keys for async connections, matching the sync engine. To be backported tov3-4-test.Was generative AI tooling used to co-author this PR?
Generated-by: Claude Code (Opus 5.5) following the guidelines