🏥 ML.NET Repository Health Dashboard

[github-actions]

— 2026-03-04

Overall: 🔴 Unhealthy
Status: 🔴 6 critical · 🟡 2 warnings · 🔵 3 info

First Run: This is the initial baseline health check for the dotnet/machinelearning repository. The repository shows several critical issues requiring immediate maintainer attention, particularly around untriaged issues (100 items), unanswered questions (52 items), CI health (16 blocking issues), and a long-standing P0 bug. Community engagement is low with 5 stale community PRs, including one open for over 3 years.

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🚨 Maintainer Action Required

Immediate (🔴 Critical)

• 100 untriaged issues — Backlog has grown significantly. All issues need triage to prioritize community reports. View untriaged issues

  • Top recent: #7581, #7577, #7574

• 52 unanswered questions (>7 days old) — Community members waiting for guidance. All questions are over 1 week old with no maintainer response. View questions

• P0 Bug open since 2021 — #5805: MKLImports PDB not included with packages (@ericstj). This critical infrastructure issue has been open for 1743 days.

• 16 blocking-clean-ci issues — CI/CD pipeline has known failures preventing clean builds. This blocks contributors and release readiness. View CI issues

  • #7419: TestAppendMany_SizeMoreThanMaxBufferCapacity triggers OOM killer
  • #7418: AutoMLExperiment_return_current_best_trial_when_ct_is_canceled
  • #7417: Code coverage build fails to instrument file in use
  • #7393: Resource contention in tests DownloadImageSet
  • #7343: SdcaLogisticRegression failing on Apple M1

• 5 community PRs awaiting review — Including #6449 open for 1208 days (3.3 years). Community contributions are stagnating. View community PRs

• 1 open security issue — #3604: Ensure documentation warns that models should be treated as code from security perspective. Open since 2019.

Timely (🟡 Warning)

• 58 open bugs — No baseline for trend comparison (first run), but significant bug backlog exists.

• Multiple stale PRs (>90 days) — 12 open PRs total, several very old:

  • #6449: Add DataViewSchema overloads (1208 days, community)
  • #6664: Generic DataFrame Math (1020 days)
  • #6749: Update Projects to .NET 8 (975 days)
  • #7094: Add Apache.Arrow Decimal128 support (714 days, community)

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📬 Pending Community Interactions

Items where a community member is waiting for a maintainer response.

#	Title	Type	Author	Waiting Since	Last Activity
#181	Reinforcement learning	Question	@gmamaladze	2018-02-07	Never answered
#7174	Add AutoEncoder as Feature Selection	Awaiting Input	@superichmann	2024-06-15	2025-02-24
#6449	Add DataViewSchema overloads	Community PR	@FranklinWhale	2022-11-12	Never reviewed

Summary: 52 awaiting response · 100 untriaged · 5 unreviewed community PRs

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🔧 CI / Workflow Health

GitHub Actions (7-day summary)

Workflow	Runs	✅ Pass	❌ Fail	⏹️ Cancel	Rate
Locker - Lock stale issues and PRs	8	8	0	0	100%
Backport PR to branch	1	1	0	0	100%

Status: ✅ GitHub Actions are healthy (100% pass rate, 0 failures in last 24h)

Azure DevOps Status (Heuristic)

• Open blocking-clean-ci issues: 16 🔴
• Open Known Build Error issues: 16

Top blocking issues:

• #7419: TestAppendMany_SizeMoreThanMaxBufferCapacity triggers OOM killer
• #7418: AutoMLExperiment_return_current_best_trial_when_ct_is_canceled_with_trial_completed_Async fails
• #7417: Code coverage build fails to instrument file in use
• #7393: Resource contention in tests DownloadImageSet
• #7343: SdcaLogisticRegression failing with LogLoss value above 0.5 on Apple M1

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🐛 Bug & Issue Landscape

Metric	Current	7d Ago	Δ	Trend
Open issues (total)	~1000+	N/A	—	—
Open bugs	58	N/A	—	—
Untriaged issues	100	N/A	—	—
Open P0	1	N/A	—	—
Open P1	23	N/A	—	—
Issues opened (7d)	0	N/A	—	—
Issues closed (7d)	0	N/A	—	⚠️

High-Priority Bugs (P0/P1)

#	Title	Priority	Assignee	Age (days)	Milestone
#5805	MKLImports PDB not included with packages	P0	—	1743	—
#7447	Legacy images need to be updated	P1	—	314	—
#6588	Error: "Microsoft.ML currently supports 'x64' and 'x86'" for ARM	P1	—	1098	—
#6370	Exposing the tree for multiclass classification	P1	—	874	—
#6353	CreateEnumerable code fails in Visual Studio FSI	P1	—	881	—
#5798	Add substitutes for IntelMKL methods for non x86/x64 builds	P1	—	1751	—

🔒 Security Issues

• #3604: Ensure documentation warns that models should be treated as code from security perspective (open 2483 days) 🔴

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📥 Pull Request Status

Metric	Current	7d Ago	Δ	Trend
Open PRs	12	N/A	—	—
PRs merged (7d)	0	N/A	—	⚠️
Community PRs awaiting review	5	N/A	—	—

Open PRs Needing Attention

#	Title	Author	Age (days)	Reviews	Labels
#6449	Add DataViewSchema overloads to ConvertToOnnx	@FranklinWhale	1208	0	community-contribution
#6664	(WIP) Generic DataFrame Math	@JakeRadMSFT	1020	0	—
#6749	Update Projects to .NET 8 in MLNET 4.0 Branch	@JakeRadMSFT	975	0	—
#7094	Add support for Apache.Arrow.Types.Decimal128Type	@piyushdubey	714	0	community-contribution
#7406	[GenAI] Use BitsAndBytes for 4bit quantization	@LittleLittleCloud	2	0	—

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📊 7-Day Trends

Metric	Current	Previous	Δ	Trend
Issues opened/day	0.0	N/A	—	—
Issues closed/day	0.0	N/A	—	⚠️
PRs merged/day	0.0	N/A	—	⚠️
GH Actions pass rate	100%	N/A	—	✅

Note: This is the first run, so no trend data is available. Future runs will compare against this baseline.

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💡 Recommendations

1. Urgent: Dedicate maintainer time to triage the 100 untriaged issues. Consider a triage sprint to categorize, label, and prioritize all pending community reports. This is blocking community engagement.

2. Critical: Address the P0 bug #5805 (MKLImports PDB). This infrastructure issue has been open for 1743 days and affects debuggability across the ecosystem.

3. Community engagement: Review and respond to the 5 stale community PRs. Especially #6449 (1208 days old). Either merge, request changes, or close with explanation. Stale PRs discourage future contributions.

4. CI health: Create an action plan for the 16 blocking-clean-ci issues. Clean CI is essential for contributor confidence and release quality. Prioritize #7419 (OOM killer) and #7418 (AutoMLExperiment test).

5. Answer unanswered questions: 52 questions are all over 7 days old. Even a brief "investigating" or "no plans" response is better than silence and shows the community is heard.

6. Security documentation: Close #3604 by updating documentation to warn about treating models as code from a security perspective.

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🔍 Correlation Insights

• Maintainer bandwidth crisis: 100 untriaged issues + 52 unanswered questions + 5 unreviewed community PRs suggests severe maintainer under-capacity relative to community engagement.

• CI blocking community contributions: 16 blocking CI issues may be discouraging community PRs since tests are unreliable. Fixing CI could improve community contribution velocity.

• Long-term technical debt: P0 bug open 1743 days + security issue open 2483 days + community PR open 1208 days indicates systematic backlog accumulation over years.

• Zero velocity in last 7 days: 0 issues opened, 0 issues closed, 0 PRs merged suggests either (a) very low activity period, (b) work happening in other branches/repos, or (c) maintainers focused elsewhere. This is unusual for a .NET project of this size.

• Good GitHub Actions health: Despite Azure DevOps CI issues, GitHub Actions are at 100% pass rate. Migration opportunity?

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_{🤖 Generated by ML.NET Repo Health Check · 2026-03-04T18:29:57Z UTC}

Generated by ML.NET Repository Health Check

[JanKrivanek]

Duplicate - closing in favor of #2 (canonical dashboard)