chore(buglog): log bug-1896 (job arrays ignore the indices given in -J)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

2026-09-30 04:32:34 +00:00

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bug-1896: Job arrays ignore the indices given in -J: arr[1-3] and arr[1,5,9] both become elements [0]..[2]

Description

Observed: submitting xcecli jobs submit -J 'arr[1-3]' -q normal sleep 300 created elements numbered from 0:

Job <1-0-1790742148-0[0]> is submitted to default queue <normal>.
1-0-1790742148-0[0]  admin RUN normal xce 1*worker* arr[0]
1-0-1790742148-0[1]  admin RUN normal xce 1*worker* arr[1]
1-0-1790742148-0[2]  admin RUN normal xce 1*worker* arr[2]

Expected: the elements carry the indices the user gave -- [1], [2], [3] here; [1], [5], [9] for arr[1,5,9]; steps such as [1-10:2] honored -- as in LSF, whose -J array syntax XCE follows (LSF indices start at 1). Impact: wrong result for every array job whose indices are not exactly 0..n-1: element numbers, %I substitution in output/input file names, and any index-based job control (jobs kill <id>[5]) refer to indices the user never asked for; gaps and steps are silently dropped. Found by: user question while verifying bug-1894's array-job check, 2026-09-29.

Environment

OS: no /etc/os-release; Docker container; NixOS kernel; kernel Linux 6.18.33 x86_64
libc: glibc 2.42-47 (interpreter /nix/store/wb6rhpznjfczwlwx23zmdrrw74bayxw4-glibc-2.42-47/lib/ld-linux-x86-64.so.2)
Toolchain: gcc (GCC) 15.2.0, meson 1.9.1
Build: asan (xce.build)
Code: scheduler-framework @ 38afb98c-dirty
Deployment: local 3-node HA controller cluster + xcecd_virtual worker + scheduler + apiserver on :8080 (deploy-ha.sh + start-all.sh)

Reproduction

Deploy a cluster with an apiserver (deploy-ha.sh + scripts/start-all.sh); xcecli login -u admin -p admin --url http://localhost:8080
xcecli jobs submit -J 'arr[1-3]' -q normal sleep 300 </dev/null; xcecli jobs list -u all

Frequency: deterministic -- 1/1, 2026-09-29 (/home/claude/tmp/xce-1894b)
Evidence: code path -- createArrayName() parses the indices correctly ([1,2,3]), but CreateJob keeps only arraySize = len(parsedIndices); the submit message carries only arraySize (controller.capnp), the WAL_JOB_ARRAY_SUBMIT entry only (base_jobid, array_size) (persist.h), and elements are expanded as base+0..base+size-1 by the controller and by the apiserver's rawJobArrayToModels. Deploy dir /home/claude/tmp/xce-1894b

Root cause

TODO: required for fixed/partial

Fix