🏥 ML.NET Repository Health Dashboard

[github-actions]

— 2026-03-04

Overall: 🔴 UNHEALTHY
Status: 🔴 4 critical · 🟡 8 warnings · 🔵 3 info

This is the first comprehensive health check of the ML.NET repository. The analysis reveals several critical issues requiring immediate attention: a massive untriaged backlog of 211 issues, 1 open P0 issue from 2021, and 3 community PRs that have been waiting 2-3 years for review. However, CI health is strong with 100% GitHub Actions pass rate over the last 7 days.

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🚨 Maintainer Action Required

Immediate (🔴 Critical)

• 🔥 P0 Issue: #5805 - MKLImports PDB not included with packages (assigned: @michaelgsharp, age: 1745 days / 4.8 years)
• 🔥 Massive Untriaged Backlog: 211 untriaged issues - this is a critical triage bandwidth problem
  • Most recent: #7581 - TreeEnsembleRegressor is deprecated in ONNX (Feb 17)
  • Only 1 new untriaged issue in last 7 days (low intake but huge backlog)
• 🔥 CI Stability: 16 open blocking-clean-ci issues indicate ongoing build reliability problems
  • #7419, #7418, #7417, #7393, #7343, #7067, #7060, #7057, #6996, #6978, #6971, #6961, #6960, #6843, #6842, #6841
• 🔥 Ancient Community PRs: 3 community contribution PRs have been waiting 2-3+ years without review
  • #6253 - Add Generic ColumnName Type (1329 days / 3.6 years)
  • #6449 - Add DataViewSchema overloads to ConvertToOnnx (1209 days / 3.3 years)
  • #6451 - Adds type forwarding attributes for types moved from Microsoft.ML.TimeSeries (1206 days / 3.3 years)

Timely (🟡 Warning)

• P1 Issues: 23 open P1 issues, including:
  • #7447 - Legacy images need to be updated (assigned: @michaelgsharp)
  • #6588 - Error when target runtime is linux-arm/arm64 (assigned: @michaelgsharp)
  • #6370 - Exposing the tree for multiclass classification (assigned: @michaelgsharp)
  • 20 more P1 issues...
• Unanswered Questions: 52 question issues remain open with no answers, with oldest from 2018
  • #181 - Reinforcement learning (created: May 2018, 2848 days old)
  • #512 - Make grid search of parameter space more efficient (created: Jul 2018)
  • 50 more unanswered questions...
• Open Bugs: 58 open bug issues need review and triage
• Known Build Errors: 16 open Known Build Error issues
• Stale PRs: 4 PRs open for over 1 year, including #6943 (838 days)

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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	jarnmo	May 2018	Jun 2018 (user)
#6253	Add Generic ColumnName Type	PR	StanleyGoldman	Jul 2022	1329 days open
#6449	Add DataViewSchema overloads to ConvertToOnnx	PR	FranklinWhale	Nov 2022	1209 days open
#6451	Adds type forwarding attributes	PR	Wraith2	Nov 2022	1206 days open
#7174	Add AutoEncoder as Feature Selection	Issue	superichmann	Jul 2024	Feb 2025 (maintainer)

Summary: 52 unanswered questions · 211 untriaged issues · 3 community PRs awaiting review (2-3 years old)

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🔧 CI / Workflow Health

GitHub Actions (7-day summary)

Workflow	Runs	✅ Pass	❌ Fail	⏹️ Cancel	Rate
Backport PR to branch	1	1	0	0	100.0%
Locker - Lock stale issues and PRs	8	8	0	0	100.0%

Status: ✅ All workflows passing - 100% success rate across all workflows in the last 7 days

Failed Runs (last 24h)

✅ No failed runs in the last 24 hours

Cancelled Runs (last 24h)

✅ No cancelled runs in the last 24 hours

Azure DevOps Status (Heuristic)

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

Top blocking-clean-ci issues:

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

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🐛 Bug & Issue Landscape

Metric	Current	7d Ago	Δ	Trend
Open issues (total)	N/A	N/A	—	First run
Open bugs	58	N/A	—	First run
Untriaged issues	211	N/A	—	First run
Open P0	1	—	—	—
Open P1	23	—	—	—
Issues opened (7d)	0	—	—	—
Issues closed (7d)	0	—	—	—

High-Priority Bugs (P0/P1)

#	Title	Priority	Assignee	Age (days)	Milestone
#5805	MKLImports PDB not included with packages	P0	@michaelgsharp	1745	—
#7447	Legacy images need to be updated	P1	@michaelgsharp	314	—
#6588	Error: linux-arm/arm64 not supported	P1	@michaelgsharp	1098	—
#6370	Exposing the tree for multiclass classification	P1	@michaelgsharp	1240	—
#6353	CreateEnumerable code fails in VS FSI	P1	unassigned	1247	—
#5798	Add substitutes for 4 IntelMKL methods for ARM	P1	unassigned	1752	—
#5744	Memory leak	P1	unassigned	1787	—
#5587	Migrate to VSTest for all Unit Tests	P1	unassigned	1877	—
#5569	OMP Error in Image Classification with AutoML	P1	unassigned	1893	—
#5566	SVMLightLoader Fails above 128 dense rows	P1	unassigned	1899	—

(showing 10 of 24 total P0/P1 issues)

🔒 Security Issues

• #3604 - Ensure ML.NET models are treated as code in security docs (P3, documentation) - assigned to @natke

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📥 Pull Request Status

Metric	Current	7d Ago	Δ	Trend
Open PRs	12	N/A	—	First run
PRs merged (7d)	0	—	—	—
Community PRs awaiting review	3	—	—	—

Open PRs Needing Attention

#	Title	Author	Age (days)	Reviews	Labels
#6253	Add Generic ColumnName Type	StanleyGoldman	1329	0	community-contribution
#6449	Add DataViewSchema overloads to ConvertToOnnx	FranklinWhale	1209	0	community-contribution
#6451	Adds type forwarding attributes	Wraith2	1206	1 ✅	community-contribution
#6943	Bumped TorchSharp version to 0.98.3	artidoro	838	0	—
#7436	Update DnnCatalog to remove deprecated transforms	luisquintanilla	331	0	—
#7231	Bump dependencies with warnings	teo-tsirpanis	216	0	—
#7213	Fix path of Native Dependencies	ericstj	238	0	—
#7200	Bump torchsharp to latest version	xiaoyun94	257	0	test-error,onnx
#7181	Bump dependencies on license update	teo-tsirpanis	280	0	—

Critical: 3 community PRs have been open for 2-3+ years without any review or feedback

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📊 7-Day Trends

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

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💡 Recommendations

1. Emergency Triage Sprint: The 211 untriaged issues represent a critical backlog. Dedicate focused time to batch-triage these issues, especially older ones that may no longer be relevant.

2. Community PR Immediate Action: The 3 community PRs that have been open for 2-3 years need immediate attention. Either review and merge, request changes, or close with explanation. This severely impacts community trust and contribution willingness.

3. P0 Issue Resolution: Issue #5805 (MKLImports PDB) has been assigned to @michaelgsharp since 2021. Either resolve or reassign if no longer actionable.

4. Question Cleanup Campaign: 52 unanswered questions (some from 2018) should be reviewed. Consider closing very old questions with a polite explanation if they're no longer relevant or cannot be answered.

5. CI Issue Review: The 16 blocking-clean-ci issues should be reviewed to determine which are actively blocking vs. historical. Consider closing resolved ones and prioritizing active blockers.

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🔍 Correlation Insights

• Triage Bandwidth Crisis: The massive untriaged backlog (211 issues) combined with ancient unanswered questions (52 from 2018-present) and years-old community PRs suggests a severe maintainer bandwidth/prioritization issue rather than a technical problem.

• CI Discrepancy: GitHub Actions shows 100% pass rate while 16 blocking-clean-ci issues are open. This suggests either (a) Azure DevOps pipelines have issues not reflected in GH Actions, (b) these issues are historical and no longer active, or (c) CI health has improved but issue cleanup hasn't happened.

• Low Activity Period: Zero issues opened/closed and zero PRs merged in the last 7 days may indicate this is a low-activity period, possibly explaining why no recent CI failures occurred despite blocking issues.

• Community Engagement Gap: The combination of 3 community PRs waiting 2-3 years, 211 untriaged issues, and 52 unanswered questions points to a systematic community engagement problem that needs organizational attention.

• Priority vs. Reality: 24 P0/P1 issues open (including one P0 from 2021) while 211 issues remain untriaged suggests prioritization may not be effectively driving work allocation.

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_{🤖 Generated by ML.NET Repo Health Check · 2026-03-04T16:19:28Z UTC}

Generated by ML.NET Repository Health Check

[JanKrivanek]

Test issue from end-to-end validation run. Production config now targets dotnet/machinelearning.

[JanKrivanek]

Reopening — this is a living dashboard issue that should remain open.

[github-actions]

📋 Health Check — 2026-03-04

Overall: 🔴 Unhealthy
🔴 4 · 🟡 5 · 🔵 2

Key Changes Since Last Run:

• Initial health check — no previous data for comparison.
• First comprehensive analysis of ML.NET repository health.

Snapshot:

• Untriaged issues: 211 (first run)
• Open bugs: 58 (first run)
• Unanswered questions: 52
• Unreviewed PRs: 5
• CI status: 🟢 GH Actions / 🔴 AzDO (heuristic)
• Community items awaiting response: 4

Generated by ML.NET Repository Health Check

[JanKrivanek]

Superseded by #2 — this was from an earlier test run.