paligemma-2 multi-file install take 3: pin-aware listing (blobs=true), real content verification, honest hash (supersedes PR #2448) - #2460
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The upstream google/paligemma2-3b-mix-224 repo ships two shards (model-00001-of-00002.safetensors and model-00002-of-00002.safetensors) plus config/tokenizer files. The old manifest pointed download_url at a single shard, so the installer only fetched half the model. Switch the variant to the existing multi-file pattern (hf_repo + multi_file: true, include_patterns: ["*.safetensors", "*.json"]) so HFMultiInstaller downloads the full artifact set. Add a combined-hash check to HFMultiInstaller that verifies the downloaded file set matches the manifest sha256 after transfer. The hash is computed from file names and sizes (content hashes are redacted by the HF API for this gated repo). Add a sweep-test guard that flags any download_url matching model-*-of-*.safetensors without hf_repo + multi_file: true. Docs-Reviewed: paligemma-2 is not listed individually in README.md, only as part of the general model-catalog count claim, which remains accurate.
…ication, real-size file_set_hash - list_hf_repo_files now hits the revision-path blobs=true endpoint so nonexistent revisions 404 (surfacing as install errors) and real sizes are returned instead of the zero-size degenerate shape - after each download (and for skip-existing files) verify lfs.sha256 when the listing carries it; mismatch returns success=False naming the path - paligemma-2 manifest file_set_hash recomputed from real blobs sizes - integrity test fixture uses real sizes and lfs.sha256 values; the _compute_combined_hash call is moved out of the per-file loop - new red-provable tests: nonexistent revision errors, lfs mismatch fails, changed size flips file_set_hash - _compute_combined_hash docstring updated to reference blobs=true
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📝 WalkthroughWalkthroughThe change converts the paligemma-2 Safetensors variant to pinned multi-file Hugging Face installation. ChangesPaligemma multi-file installation
Estimated code review effort: 4 (Complex) | ~60 minutes Merge Risk: 🔵 Low · up to The change is mergeable with owner awareness: resume progress-callback failures are currently hidden from logs, which could make troubleshooting interrupted downloads harder, but no user-facing download failure is indicated. Sequence Diagram(s)sequenceDiagram
participant ModelsRoute
participant DownloadManager
participant HFMultiInstaller
participant HuggingFaceAPI
ModelsRoute->>DownloadManager: start multi-file download task
DownloadManager->>HFMultiInstaller: install model and variant
HFMultiInstaller->>HuggingFaceAPI: request pinned repository listing
HFMultiInstaller->>HFMultiInstaller: verify shard digests and file_set_hash
HFMultiInstaller-->>DownloadManager: complete installation
DownloadManager-->>ModelsRoute: return download identifiers
Possibly related PRs
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 2📝 Generate docstrings 💡
🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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nemotron-super review VERDICT: No blocking issues found. Automated first-pass review by the nemotron-super lane. The lead still reviews before merge. |
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| on_progress(downloaded_bytes, total_bytes) | ||
| except Exception: # noqa: BLE001 | ||
| pass | ||
| if lfs_sha256 and local.stat().st_size > 0: |
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[WARNING]: LFS verification skips empty files
The local.stat().st_size > 0 guard means 0-byte LFS files bypass SHA256 verification entirely. A truncated or empty LFS shard would be silently accepted, potentially causing a file_set_hash mismatch later or installing corrupted weights.
Reply with @kilocode-bot fix it to have Kilo Code address this issue.
| "downloaded_bytes": downloaded_bytes, | ||
| "target_dir": str(target_dir), | ||
| } | ||
| if lfs_sha256 and local.stat().st_size > 0: |
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[WARNING]: LFS verification skips empty files
Same st_size > 0 guard applies to freshly downloaded files. A 0-byte download that fails to write content would bypass LFS integrity checks.
Reply with @kilocode-bot fix it to have Kilo Code address this issue.
| return h.hexdigest() == expected_hex | ||
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| def _compute_combined_hash(target_dir: Path, selected: list[dict]) -> str: |
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[SUGGESTION]: Unused target_dir parameter
_compute_combined_hash still accepts target_dir but no longer reads from disk — sizes now come from the HF listing records. The parameter is misleading and should be removed.
Reply with @kilocode-bot fix it to have Kilo Code address this issue.
Code Review SummaryStatus: 1 Issue Found | Recommendation: Address before merge Overview
Issue Details (click to expand)SUGGESTION
Files Reviewed (3 files)
Fix these issues in Kilo Cloud Previous Review Summary (commit 023ad43)Current summary above is authoritative. Previous snapshots are kept for context only. Previous review (commit 023ad43)Status: 3 Issues Found | Recommendation: Address before merge Overview
Issue Details (click to expand)WARNING
SUGGESTION
Files Reviewed (4 files)
Reviewed by step-3.7-flash · Input: 144.7K · Output: 30K · Cached: 1.7M |
file_set_hash is computed from the listing, not local disk, so the per-file lfs sha check is the only verification of downloaded content. The st_size>0 guard let a 0-byte file (disk full, truncated write, crashed earlier run) pass completely unverified on both the fresh-download and resume paths. Red-proven: both new tests fail on the guarded code.
# Conflicts: # tests/test_model_manifest_integrity.py
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Lead review — APPROVED with fixes pushed (5482537 + merge ad5cdfb). Merge on green once checks settle and the CodeRabbit review lands. Verified against the #2448 hold contract (comment 5309138322), all three items measured:
Bot dispositions:
Conflict resolved (ad5cdfb): the PR was cut 28 commits stale, pre-#2453. Union merge of |
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Actionable comments posted: 1
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Inline comments:
In `@tinyagentos/installers/hf_multi_installer.py`:
- Around line 317-321: Update the exception handler around the resume-path
on_progress callback to log the caught exception, matching the diagnostic
behavior used by the download callback path, while continuing the download flow
after callback failures.
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📒 Files selected for processing (9)
app-catalog/models/paligemma-2/manifest.yamlchangelog.d/tsk-g4ydso-pin-aware-listing.mdchangelog.d/tsk-mxrnsu-paligemma-2-sharded-fix.mdchangelog.d/tsk-ujxxhx-paligemma-2-multi-file-routing.mdtests/installers/test_hf_multi_installer.pytests/test_model_manifest_integrity.pytests/test_routes_models.pytinyagentos/installers/hf_multi_installer.pytinyagentos/routes/models.py
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The download path logs progress-callback exceptions (hf_multi_installer ~L269); the skip-existing path swallowed them silently, leaving resume-path progress failures undiagnosable. Log at the same level with the file name.
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CR review read + actioned; deleted-symbols-gate red on ad5cdfb was a false positive.
Gate defect carded as tsk-n2g5qw (compute the merge result in-script via |
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CARD TITLE (intent, not commit subject): paligemma-2 multi-file install take 3: pin-aware listing (blobs=true), real content verification, honest hash (supersedes PR #2448)
Autonomous build of board card tsk-g4ydso.
REVISION: built on
exec/tsk-ujxxhx(cut at4de6a0643d4ea9613ef267245ee4329d3d941e50), not ondev. That branch'scommits are ancestors of this one and the
Files:list below is the diff SINCE it,so this PR shows the revision alone while carrying the original work. Verified by
git merge-base --is-ancestorbefore the PR was opened.nonexistent revisions 404 (surfacing as install errors) and real sizes
are returned instead of the zero-size degenerate shape
the listing carries it; mismatch returns success=False naming the path
_compute_combined_hash call is moved out of the per-file loop
changed size flips file_set_hash
Files:
app-catalog/models/paligemma-2/manifest.yaml | 2 +-
changelog.d/tsk-g4ydso-pin-aware-listing.md | 4 ++
tests/installers/test_hf_multi_installer.py | 95 ++++++++++++++++++++++++++++
tests/test_model_manifest_integrity.py | 42 +++++++-----
tinyagentos/installers/hf_multi_installer.py | 53 ++++++++++++----
5 files changed, 169 insertions(+), 27 deletions(-)
Summary by CodeRabbit
New Features
Bug Fixes