🏥 ML.NET Repository Health Dashboard

[github-actions]

— 2026-03-04

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

First run baseline established. The ML.NET repository shows signs of accumulating technical debt with 211 untriaged issues, a single critical P0 bug open for 5 years, 52 unanswered questions over 7 days old, and several PRs open for 1000+ days. CI health appears stable with 100% success rate on tracked workflows over the past 7 days. Immediate triage and review bandwidth is needed.

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🚨 Maintainer Action Required

Immediate (🔴 Critical)

• P0 Bug Open 5 Years: #5805 "MKLImports PDB not included with packages" (created May 2021) - critical symbols missing from release packages
• Untriaged Backlog at 211: With only 1 new issue in the past 7 days, this represents a substantial historical backlog requiring systematic triage

Timely (🟡 Warning)

• 23 Open P1 Issues: Several P1 issues open >30 days without resolution
• 52 Unanswered Questions >7 Days Old: Community questions dating back to 2018 lack maintainer responses
• Security Documentation Gap: #3604 - Open since 2019, warns users about treating models as code from security perspective
• 5 Community PRs Awaiting Review: Including #6449 open since Nov 2022 (1,238 days)
• 3 PRs Open >1,000 Days: Stale PRs indicate review bandwidth issues
• 6 Known CI Build Errors: Open issues in blocking-clean-ci and Known Build Error categories, though recent runs show 100% success

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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
#7174	Add AutoEncoder as a Feature Selection Method	Issue	superichmann	2024-06-15	2025-02-24
#6045	Long Column names unexpectedly dropped in training	Issue	torronen	2022-01-12	2022-10-08
#6034	Crashing in UWP Release but not Debug	Issue	isaac12391	2022-01-07	2022-01-10
#5779	object detection output float32	Issue	masgh021	2021-05-02	2021-06-03
#6449	Add DataViewSchema overloads to ConvertToOnnx	PR	FranklinWhale	2022-11-12	2022-11-29
#7094	Add support for Apache.Arrow.Types.Decimal128Type	PR	piyushdubey	2024-03-21	(recent)
#7569	fix: performance of erfinv	PR	JeWaVe	2026-01-15	(recent)
#7575	Add CountDistinct and CountIf methods	PR	sevenzees	2026-01-30	(recent)
#7578	Add Melt method to DataFrame	PR	sevenzees	2026-02-08	(recent)

Summary: 4 awaiting response (labeled "Awaiting User Input") · 211 untriaged · 5 community PRs unreviewed

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🔧 CI / Workflow Health

GitHub Actions (7-day summary)

Workflow	Runs	✅ Pass	❌ Fail	⏹️ Cancel	Rate
Locker - Lock stale issues and PRs	9	9	0	0	100%
Backport PR to branch	1	1	0	0	100%

✅ No failed or cancelled runs in last 24 hours

Azure DevOps Status (Heuristic)

• Open blocking-clean-ci issues: 3
• Open Known Build Error issues: 6

Known Build Issues (tracked but not currently blocking):

• #7419 - TestAppendMany_SizeMoreThanMaxBufferCapacity triggers OOM killer
• #7418 - AutoMLExperiment test fails in CI
• #7417 - Code coverage build fails to instrument file in use
• #7393 - Resource contention in tests DownloadImageSet
• #7343 - SdcaLogisticRegression failing on Apple M1
• #7067 - AutoML tests writing test output outside test

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🐛 Bug & Issue Landscape

Metric	Current	7d Ago	Δ	Trend
Open issues (total)	N/A	—	—	—
Open bugs	100+	—	—	—
Untriaged issues	211	—	—	—
Open P0	1	—	—	—
Open P1	23	—	—	—
Issues opened (7d)	1	—	—	—
Issues closed (7d)	N/A	—	—	—

First run - trend data will be available in subsequent checks

High-Priority Bugs (P0/P1)

#	Title	Priority	Assignee	Age (days)	Milestone
#5805	MKLImports PDB not included with packages	P0	-	1,744	-
#7447	Legacy images need to be updated	P1	-	314	-
#6588	Error building for linux-arm/arm64	P1	-	1,098	-
#6370	Exposing the tree for multiclass classification	P1	-	874	-
#6353	CreateEnumerable code fails in VS FSI	P1	-	880	-
#5798	Add substitutes for IntelMKL for SymSgd	P1	-	1,751	-
#5744	Memory leak in ONNX Runtime	P1	-	1,787	-
#5587	Migrate to VSTest for all Unit Tests	P1	-	1,876	-
#5569	OMP Error initializing libiomp5.dylib	P1	-	1,901	-

...plus 14 additional P1 issues. All P1s listed above are open >1 year.

🔒 Security Issues

• #3604 - Open since 2019: Documentation warning about treating ML models as code from security perspective

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📥 Pull Request Status

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

Open PRs Needing Attention

#	Title	Author	Age (days)	Reviews	Labels
#6449	Add DataViewSchema overloads to ConvertToOnnx	FranklinWhale	1,238	0	community-contribution
#6664	(WIP) Generic DataFrame Math	JakeRadMSFT	993	?	-
#6749	Update Projects to .NET 8	JakeRadMSFT	963	?	-
#7094	Add support for Arrow Decimal128Type	piyushdubey	713	?	community-contribution
#7569	fix: performance of erfinv	JeWaVe	48	?	community-contribution
#7575	Add CountDistinct and CountIf	sevenzees	33	?	community-contribution
#7578	Add Melt method to DataFrame	sevenzees	25	?	community-contribution
#7566	Update dependencies from dotnet/arcade	dotnet-maestro	51	?	-

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📊 7-Day Trends

First run - baseline data captured. Trends will be available after next run.

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💡 Recommendations

1. Urgent Triage Sprint: Dedicate focused time to triage the 211 untriaged issues. Consider batch-labeling enhancement requests vs bugs, and closing duplicates/stale items.

2. P0/P1 Review: The P0 issue (#5805) has been open nearly 5 years. Review whether it's still relevant or can be closed/downgraded. For P1s, assess which are still actionable and assign/milestone them.

3. Community PR Review: Establish a weekly "community contribution review" session. Start with the 1,238-day-old PR #6449 - either merge, request changes, or close with explanation.

4. Question Answering: 52 questions are >7 days old. Implement a weekly rotation for answering community questions. Even brief "we'll investigate" responses show engagement.

5. Close Stale PRs: For PRs open >1 year without activity (like #6664, #6749), post a "closing due to staleness, please resubmit if still relevant" message and close.

6. Security Documentation: Close #3604 by adding a prominent security warning to the documentation about treating models as code.

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🔍 Correlation Insights

• High untriaged count (211) + old P0 (5 years) + old P1s (avg ~2-3 years) → suggests bandwidth constraints and lack of systematic triage process
• 100% CI pass rate but 6 "Known Build Error" issues → tracked issues may be intermittent/flaky tests or heuristic-based (AzDO) rather than GH Actions
• 5 community PRs awaiting review (oldest 1,238 days) → indicates community engagement exists but review bandwidth is limited
• Only 1 new untriaged issue in 7 days → current triage rate appears to be keeping up with new issues, but backlog is large
• Old security issue (#3604) + old P0 → suggests lower priority on non-functional issues compared to features

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_{🤖 Generated by ML.NET Repo Health Check · 2026-03-04T18:20:34Z UTC}

Generated by ML.NET Repository Health Check

[JanKrivanek]

Duplicate - cache write issue caused re-creation. Closing in favor of #2.