[scheduler] Fix race condition in multi-scheduler environments.#2191
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DiegoTavares merged 5 commits intoAcademySoftwareFoundation:masterfrom Mar 9, 2026
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When multiple instances or async tasks are updating the same host, there was a race condition that would cause over booking errors instead of gracefully treating the condition that caused the race. This PR is intended to reduce the number of the database error: WARN cue_scheduler::pipeline::dispatcher::actor: Wasn't able to dispatch all frames: FailedToUpdateResources( × (57b07e8d-6813-4fc5-8f71-132e968f4e29) Failed to update host resources ├─▶ error returned from database: unable to allocate additional memory ╰─▶ unable to allocate additional memory )
These messages are being handled as warnings when they are not really abnormal.
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Hi @DiegoTavares, Thanks for your contribution. I’ve added a few comments with suggestions that could help improve the PR. |
ramonfigueiredo
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Mar 9, 2026
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Approved! Thanks, @DiegoTavares
DiegoTavares
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When multiple instances or async tasks are updating the same host, there was a race condition that would cause over booking errors instead of gracefully treating the condition that caused the race.
This PR is intended to reduce the number database errors like the following:
AI Disclosure
Claude Code Opus was used to brainstorm the root cause of this problem and also to review the changes before pushing the PR.