fix(data-repo): runlog index builder reads .jsonl.gz run logs - #193
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…or_v2 commit path)
scripts/build-runlog-index.py skipped *.jsonl.gz locally and filtered
.endswith('.jsonl') in --github mode, so once Arena Studio v0.72 commits
gzipped logs the per-folder index.json would stop gaining entries and the
dashboard catalog's Start/Duration would read '—' for every new run.
gzip is not seekable, so a .gz is read whole (a 1 h run is ~4 MB compressed)
and inflated; head/tail parsing is unchanged. 'file' keeps the .gz name, 'size'
is the committed (compressed) size — what the catalog shows. A truncated .gz
still yields metadata + start and never raises.
Verified: index.json byte-identical for all 149 v1 logs in the local course
clone (old vs new script); 9 gzipped twins of real logs index identically to
their originals apart from file/size. New tests/test-build-runlog-index.py
(17 checks) added to the pixi test task.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
mbreiser
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Sep 7, 2026
…rebuild green Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Follow-up to #187, prerequisite for shipping #186 (Studio v0.72 commits run logs as
.jsonl.gz).Problem
scripts/build-runlog-index.pyskipped*.jsonl.gzin local mode (# gz handled once behavior_v2 lands) and filtered.endswith('.jsonl')in--githubmode. After #186 every new run is gzipped, sorunlogs/<folder>/index.jsonwould stop gaining entries and the dashboard catalog's Start / Duration would read "—" for every new run.Change
.jsonland.jsonl.gzin both modes (is_runlog_name)..gzis read whole (--github: one raw download; a 1 h behavior_v2 run is ~4 MB compressed) and inflated; the existing 64 KB head / 4 KB tail parsing then applies unchanged. Plain.jsonlfiles still use the two Range reads — nothing changes for them.filekeeps the on-disk name (x.jsonl.gz) so the dashboard's per-file lookup matches;sizeis the committed (compressed) size, which is what the catalog shows..gz(half-written upload) still yieldsrun_metadata+ start via a streaming decompressor and never raises; end state staysnull..gzwhole, small).Verification
.jsonlin 10 folders) → everyindex.jsonbyte-identical.file/size(gzip ratios 2.8–7.3×).tests/test-build-runlog-index.py(17 checks: plain vs gz twin, truncated gz, aborted run fallback, local CLI on a mixed folder, name filter) added to thepixi run testtask.Deploy
The data repo runs a copy: after merge, re-install into
reiserlab/cshl-2026-course/.github/scripts/build-runlog-index.py(byte-identical) — same as #187's install step. Until then the Action ignores.gzfiles (no harm, just missing rows).🤖 Generated with Claude Code