docs(buglog): P0 defects fixed (bug-1936..bug-1955; 1936 and 1955 partial), bug-1956 cannot-reproduce
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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22 changed files with 353 additions and 266 deletions
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@ -1,8 +1,8 @@
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---
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id: "bug-1944"
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status: "open"
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status: "fixed"
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status_updated: "2026-10-10"
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status_note: "newly logged"
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status_note: ""
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component: "scheduler"
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severity: "wrong-result"
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timestamp: "2026-10-10T08:14:56Z"
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@ -11,6 +11,7 @@ occurrences: 1
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files: ["src/scheduler/src/core_events.c", "src/scheduler/src/schedobj.c"]
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tags: ["scheduler", "queue", "priority"]
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related: []
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fix_commits: ["7a9d75d6"]
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---
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# bug-1944: xce_scheduler gives a job moved to another queue the queue's priority, so it jumps ahead
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@ -36,15 +37,16 @@ New jobs get priority 0 (`schedobj.c:214`, `core_events.c:353`), but on a queue
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- Frequency: deterministic (by code reading; confirmed by the RED test of the fix)
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- Evidence: the code sites quoted in Description; no logs kept.
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## Root cause
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TODO: required for fixed/partial
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On a queue change both `xce_core_push_events` (`JOB_UPDATE`, `core_events.c`) and `sched_update_existing_job` (`schedobj.c`) set `job->priority = q->priority`; new jobs and snapshot-restored jobs get 0, so moved jobs jumped ahead and live/replay disagreed. Pre-existing.
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## Fix
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TODO: required for fixed/partial
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Both sites now only re-point `job->queue` on a move; queue priority still orders the queues. `test_job_update.c`, which asserted the old behaviour, now expects the job's own priority.
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## Verification
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- Test: TODO: name + file; RED before the fix, GREEN after
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- Suites: TODO: suite results and build profile
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- Live: TODO: soak/deploy run, or n/a and why
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- Test: `test_moved_job_keeps_its_priority_and_place` (`src/scheduler/testsuite/test_job_move_priority.c`): RED `:208: FAIL: Expected 0 Was 10` (and `:214: Expected 2 Was 1` for the ordering), GREEN after; `test_update_existing_job_mutates_in_place` RED `Expected 1 Was 5` with the corrected expectation, GREEN after.
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- Suites: `xce-build.sh all asan xce.build --incremental` on the merged branch, 2026-10-10: all C suites Ok 155 / Fail 0, frontend Go unit tests ok, xceadmin tests ok; apiserver `CGO_ENABLED=0 go test ./...` (incl. middleware, router, cmd) ok
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- Live: n/a: unit/fixture-level verification only; no live deployment was run (follow-up)
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## References
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- Related: none
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- Fix commit: `7a9d75d6` (on `scheduler-framework`; worker-branch original in the merge)
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- Review: `.kiro/reviews/project-gap-review-2026-10-10.md`
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