50 lines
2.1 KiB
Markdown
50 lines
2.1 KiB
Markdown
---
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id: "bug-1944"
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status: "open"
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status_updated: "2026-10-10"
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status_note: "newly logged"
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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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last_seen: "2026-10-10T08:14:56Z"
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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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---
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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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## Description
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**Observed:** (source reading, `.kiro/reviews/project-gap-review-2026-10-10.md` (P0); to be confirmed by a failing test before the fix)
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New jobs get priority 0 (`schedobj.c:214`, `core_events.c:353`), but on a queue change the job's priority becomes the queue's priority (`core_events.c:1360`, `schedobj.c:684`); the picker sorts by job priority within a queue (`plugins/builtin_fcfs.c:213`).
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**Expected:** Moving a job does not change its job priority.
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**Impact:** Wrong ordering: moved jobs overtake jobs submitted earlier to the target queue.
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**Found by:** review: `.kiro/reviews/project-gap-review-2026-10-10.md` (P0)
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## Environment
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- OS: no /etc/os-release; Docker container; NixOS kernel; kernel Linux 6.18.33 x86_64
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- libc: glibc 2.42-47 (interpreter /nix/store/wb6rhpznjfczwlwx23zmdrrw74bayxw4-glibc-2.42-47/lib/ld-linux-x86-64.so.2)
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- Toolchain: gcc (GCC) 15.2.0, meson 1.9.1
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- Build: asan (xce.build)
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- Code: scheduler-framework @ 94472ee3-dirty
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- Deployment: any (found by source reading; the failing test that confirms it is named in Verification)
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## Reproduction
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1. Two jobs pending in queue B; move a third job from A to B (queue priority > 0).
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2. The moved job is picked first.
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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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## Fix
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TODO: required for fixed/partial
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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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## References
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- Related: none
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