Overlapping compression commit-fence ordering bug and fix
Cluster 116635. Data as of
Nothing open on GitHub. Fix merged in #117558 on 20 Sep 2026. Check it covers your case.
The short answer
- Known?
- Yes. 3 related items grouped here, 1 issue already closed.
- Fix event
- A fix was merged to main in PR #117558. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #117558. That is separate from the fix event. - Still open
- Nothing open on GitHub.
These items address a race or ordering problem where overlapping _compress_context calls could corrupt or prematurely discard commit-fence slots. The fix tracks commit fences as a registration stack to keep the correct fence live when compression attempts overlap.
Open issues0
Open PRs0
Fixes on record
-
#117558 fix(compression): overlapping compression attempts keep the newer attempt's commit fence live (#116635, salvage #116640)
files:
agent/compression_facade.py,tests/agent/test_compression_commit_fence_race.py
1 PR closed without merging
From the close comments: merged via another change 1
-
#116640 fix(compression): track commit fences as a registration stack · merged via another change →
09b72bc,#117558
Closed issues · 1
- Closed#116635Out-of-order completion of overlapping _compress_context calls corrupts the commit-fence slot
How this cluster was grouped
-
Link evidence (
structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference. -
Pairwise link density
0.67: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36.1.00means every pair is linked.
Pick up a Lab task
Check whether a fix covers the open issues here, with your own agent. Bring back evidence for maintainers.
Open the LabAt a glance
- Merged PRs
- #117558
- Closed issues
- 1
- Attempts
- 1 PR closed without merging
- Fix link checked
- 20 Sep 2026