🏥 Repo Health Dashboard

[github-actions]

Last Updated: 2026-03-22 06:14 UTC | Status: ⚠️ WARNING | Run: #23397133475

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📊 Executive Summary

Repository health is moderate with warnings. The primary concern is a large backlog of 815 open issues without milestones and 216 explicitly marked as untriaged. All tracked workflows (backport, locker) are currently green. P0 issue #5805 is baselined and has an assignee. No critical pipeline failures detected. Velocity stable with 1 issue closed in the last 24 hours.

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🔴 Critical Findings

No critical findings detected ✅

Note: P0 issue #5805 (MKLImports PDB not included) is baselined as known tech debt since 2021.

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🟡 Warning Findings

Status	Finding	Details	Impact
🆕 NEW	Large untriaged backlog (investigated)	216 issues with explicit 'untriaged' label	Triage process needs attention
🆕 NEW	Massive no-milestone backlog (investigated)	815 issues lack milestones for tracking	Critical backlog management issue

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ℹ️ Info Findings

Finding	Details
Issue Counts	P0: 1 (baselined), P1: 23, P2: 298, P3: 101, Bug: 59
Untriaged	216 explicitly labeled + 815 without milestones
Open PRs	1 pull request (excellent)
Needs User Input	4 issues waiting on authors
GitHub Actions	backport.yml: ✅ SUCCESS, locker.yml: ✅ SUCCESS

---

📈 Key Metrics (vs. previous run 2026-03-21)

Metric	Current	Previous	Trend
P0 Issues	1	0	⚠️ Count updated (baselined)
P1 Issues	23	23	➡️ Stable
P2 Issues	298	298	➡️ Stable
P3 Issues	101	101	➡️ Stable
Bug Issues	59	59	➡️ Stable
Untriaged Issues	216	216	➡️ Stable
No-Milestone Issues	815	N/A	🆕 First tracked
Open PRs	1	9	⬇️ Improved (-8)
Workflow Success	100%	100%	➡️ Stable

Notable changes:

• 8 PRs closed/merged (9 → 1) — Excellent progress ⬇️
• No-milestone tracking added this run (815 issues)
• All issue priority counts remain stable
• Workflows continue at 100% success

---

🔄 GitHub Actions Status

Workflow	Last Run	Status	Run #
backport.yml	2026-03-21 13:17 UTC	✅ Success	#3054
locker.yml	2026-03-21 09:11 UTC	✅ Success	#842

Both monitored GitHub Actions workflows running cleanly with no failures.

---

🏥 Azure DevOps Pipelines

⚠️ AZDO_PAT not configured — pipeline monitoring disabled

Note: Configure AZDO_PAT secret to monitor these pipelines in dnceng/public:

• vsts-ci
• codecoverage-ci
• night-build
• outer-loop-build

---

📋 Baselined Items

Source: .github/health-baseline.md

Issues (26 baselined items):

• MKLImports PDB not included with packages #5805 — MKLImports PDB packaging (P0 tech debt since 2021) ✅ Has assignee
• Legacy images need to be updated #7447 — Legacy images update (P1 infra work)
• Error: "Microsoft.ML currently supports 'x64' and 'x86' processor" when target runtime is *linux-arm* or *linux-arm64* #6588 — ARM/ARM64 support (P1 platform limitation)
• Exposing the tree for multiclass classification #6370 — Multiclass tree exposure (P1 feature request)
• (+22 more P1 items from 2018-2025, see baseline file)

PRs (6 baselined items):

• update torchsharp to 0.105.0 #7416 — TorchSharp update to 0.105.0
• [GenAI] Use BitsAndBytes for 4bit quantization. #7406 — GenAI 4bit quantization
• Add support for Apache.Arrow.Types.Decimal128Type #7094 — Apache Arrow Decimal128 support
• (+3 more, see baseline file)

---

📝 Change Summary

Since last run (2026-03-21 06:09 UTC, ~24h ago):

Findings:

• 🆕 New: 2 warning findings detected
• ✅ Resolved: 0
• 📌 Existing: 0 (first run with new fingerprinting)

Metrics:

• ⬇️ Improved: Open PRs decreased dramatically 9→1 (-8 PRs closed/merged in 24h) 🎉
• ➡️ Stable: All issue priority counts unchanged
• ➡️ Stable: Workflows remain at 100% success

Key Observations:

• Excellent PR progress: 8 PRs closed/merged in 24 hours
• Workflows continue performing well with no failures
• Issue velocity: 0 opened, 1 closed (net -1)
• No new critical issues or workflow failures
• Added tracking for 815 issues without milestones

---

🔍 Analysis

Positive Signals ✅

1. Exceptional PR velocity — 8 PRs closed in 24h (9 → 1)
2. Workflows healthy — Both bot workflows (backport, locker) passing
3. P0 managed — Single P0 issue is baselined with assignee
4. Active closure — 1 issue closed in last 24h
5. Stable priorities — No priority escalations

Concerns ⚠️

1. Triage backlog — 216 explicitly untriaged + 815 without milestones = 1031 issues needing attention
2. P2 backlog — 298 P2 issues may indicate priority inflation or insufficient capacity

Recommendations

1. Triage blitz — Schedule dedicated time to triage the 216 explicitly untriaged issues
2. Milestone audit — Review the 815 no-milestone issues to either assign milestones or close as won't-fix
3. Priority review — Verify P2 classification accuracy; consider if some should be P3 or closed
4. AzDO Monitoring — Configure AZDO_PAT to enable Azure Pipelines health tracking
5. Baseline Review — Update .github/health-baseline.md review date (last: 2026-03-06, due: 2026-04-05)

---

🔗 Resources

• This Run: https://github.com/dotnet/machinelearning/actions/runs/23397133475
• Workflow: repo-health-check.lock.yml
• Untriaged Issues: https://github.com/dotnet/machinelearning/issues?q=is:issue+is:open+label:untriaged
• No-Milestone Issues: https://github.com/dotnet/machinelearning/issues?q=is:issue+is:open+no:milestone
• P1 Issues: https://github.com/dotnet/machinelearning/issues?q=is:issue+is:open+label:P1
• P2 Issues: https://github.com/dotnet/machinelearning/issues?q=is:issue+is:open+label:P2

---

Dashboard generated by repo-health-check.lock.yml • Next run: ~24h

Generated by Repo Health Check — Orchestrator at 2026-03-22 06:14 UTC

Generated by Repo Health Check — Orchestrator

Generated by Repo Health — Dashboard Groomer

[github-actions]

🔍 Investigation: I3-UNTRIAGED-BACKLOG

Finding: High untriaged backlog: 100+ issues, many > 7 days old
Severity: high
Category: issue

Evidence

1. 154 untriaged issues in first 200 open issues (77% of sample) — Source: GitHub API query, 2026-03-06

   • 147 issues explicitly labeled untriaged
   • 7 issues with no labels at all

2. Age distribution is heavily skewed old:

   • 129 issues > 365 days (84%)
   • 20 issues 91-365 days (13%)
   • 2 issues 31-90 days (1%)
   • 2 issues 8-30 days (1%)
   • 1 issue 0-7 days (1%)
   • Source: Parsed created_at timestamps from GitHub API

3. 90 unique authors across 147 untriaged issues — indicating both community and team contributions stuck in backlog — Source: User analysis of GitHub issue data

4. Top contributors to untriaged backlog:

   • ericstj (Microsoft team): 14 untriaged issues
   • superichmann: 11 untriaged issues
   • 80LevelElf: 7 untriaged issues
   • asmirnov82 (Microsoft team): 6 untriaged issues
   • 23 untriaged issues from Microsoft team members (ericstj, asmirnov82, luisquintanilla, michaelgsharp)
   • Source: GitHub user metadata analysis

5. Partial triage has occurred on 55% of untriaged issues:

   • 81/147 have additional labels beyond untriaged (55%)
   • 66/147 have ONLY untriaged label (45%)
   • Source: Label analysis from GitHub API

6. Issue type breakdown of untriaged:

   • 49 enhancements (33%)
   • 7 questions (5%)
   • 6 blocking-clean-ci (4%)
   • 6 Known Build Error (4%)
   • 1 bug (1%)
   • 0 have area/priority/kind labels (no structured triage)
   • Source: Label name pattern matching

7. Examples of very old untriaged issues:

   • ArgumentOutOfRangeException when running Microsoft.ML.Fairlearn.Tests.GridSearchTest.TestGridSearchTrialRunner2 #6842 (891 days): "ArgumentOutOfRangeException in Fairlearn tests" — blocking-clean-ci, Known Build Error, untriaged
   • Microsoft.ML.Fairlearn.Tests.GridSearchTest.TestGridSearchTrialRunner2 failed with bestResult.Metric comparison #6843 (890 days): "Microsoft.ML.Fairlearn test failure" — blocking-clean-ci, Known Build Error, untriaged
   • LightGBM Multiclassification trainer returning error code -1 "Number of classes should be specified and greater than 1 for multiclass training" but I can't see where to specify the number of classes #6844 (890 days): "LightGBM returning error" — untriaged only
   • Source: GitHub issue ArgumentOutOfRangeException when running Microsoft.ML.Fairlearn.Tests.GridSearchTest.TestGridSearchTrialRunner2 #6842, Microsoft.ML.Fairlearn.Tests.GridSearchTest.TestGridSearchTrialRunner2 failed with bestResult.Metric comparison #6843, LightGBM Multiclassification trainer returning error code -1 "Number of classes should be specified and greater than 1 for multiclass training" but I can't see where to specify the number of classes #6844 metadata

8. Recent untriaged issues (not being triaged promptly):

   • TreeEnsembleRegressor is deprecated in ONNX #7581 (17 days): "TreeEnsembleRegressor deprecated in ONNX" — legitimate bug report with repro
   • Add Melt method #7577 (25 days): "Add Melt method" — enhancement request
   • Add CountDistinct method to GroupBy #7574 (34 days): "Add CountDistinct to GroupBy" — enhancement request
   • erfInv is very inneficient #7568 (50 days): "erfInv inefficient" — perf issue with PR fix: performance of erfinv #7568 #7569 already submitted
   • Source: GitHub issue TreeEnsembleRegressor is deprecated in ONNX #7581 content + timestamp analysis

9. Some untriaged issues have milestones assigned:

   • Update build containers #7411 "Update build containers" — no labels, but assigned to ML.NET 5.0 milestone
   • Source: GitHub issue Update build containers #7411 metadata

10. Known baseline exists but doesn't address triage process:

    • Baseline covers 24 P1 issues and 6 PRs as accepted technical debt
    • No baseline for untriaged issues or triage SLA
    • Source: .github/health-baseline.md

Root Cause

Confidence: High

The untriaged backlog is a process breakdown, not a resource constraint. The evidence shows:

1. Triage process is incomplete or inconsistent: 84% of untriaged issues are > 1 year old, including issues from Microsoft team members, indicating systemic triage neglect rather than a recent spike.

2. No triage SLA or automation: Issues remain untriaged for months/years without triggering any escalation. The untriaged label is applied automatically (likely on creation) but never removed systematically.

3. Partial triage is happening but incomplete: 55% of untriaged issues have other labels (enhancement, question, blocking-ci) suggesting someone looked at them but never removed the untriaged label, indicating confusion about triage completion criteria.

4. Build/CI issues are not being prioritized: 6 issues marked both blocking-clean-ci and untriaged have sat for 800+ days, suggesting either the blocking-clean-ci label is misapplied or the triage process doesn't prioritize build health.

5. The backlog is stable/growing, not clearing: With only 1 issue untriaged in the last 7 days but 129 still sitting from >365 days ago, the backlog is not being worked down.

Recommendations

Priority	Action	Who
🔴 Immediate	Triage Sprint: Dedicate team capacity to triage top 50 oldest untriaged issues (>365 days) within 2 weeks. Remove untriaged label + add area/priority or close as duplicate/won't-fix.	@ericstj @asmirnov82 @michaelgsharp
🔴 Immediate	CI blocker audit: Investigate 6 issues labeled blocking-clean-ci + untriaged (891+ days old). Either fix/close or remove blocking-clean-ci label if not actively blocking.	@ericstj
🟡 Short-term	Define triage completion criteria: Document when untriaged label should be removed (e.g., after area + priority + assignee OR decision to close). Add to CONTRIBUTING.md.	Maintainers
🟡 Short-term	Implement triage SLA bot: Create automation to escalate issues that remain untriaged for >7 days (ping maintainers) and >30 days (label needs-maintainer-attention).	DevOps/Maintainers
🟡 Short-term	Triage rotation: Establish weekly rotation for team members to triage new issues within 7 days of creation.	@ericstj (to coordinate)
ℹ️ Long-term	Baseline triage backlog: If capacity doesn't exist to triage 129 old issues, consider adding "untriaged backlog >1 year" to health-baseline.md as accepted tech debt with 90-day re-evaluation.	Maintainers
ℹ️ Long-term	Issue templates: Add structured issue templates that pre-label issues by type (bug/enhancement/question) to reduce manual triage burden.	Maintainers

Related

• Dashboard: 🏥 Repo Health Dashboard #7584 (Repo Health Dashboard)
• Health baseline: .github/health-baseline.md (24 P1 issues baselined, but no triage process baseline)
• Sample untriaged issues:
  • ArgumentOutOfRangeException when running Microsoft.ML.Fairlearn.Tests.GridSearchTest.TestGridSearchTrialRunner2 #6842 (891 days) — CI blocker
  • TreeEnsembleRegressor is deprecated in ONNX #7581 (17 days) — Recent bug
  • Update build containers #7411 (11 days) — No labels but has milestone
• Partial triage visible in: Add Melt method #7577, Add CountDistinct method to GroupBy #7574, erfInv is very inneficient #7568 (have enhancement or other labels + untriaged)

---

Investigated by repo-health-investigate • Finding: I3-UNTRIAGED-BACKLOG

Generated by Repo Health — Investigate Finding

[github-actions]

🔍 Investigation: P5-STALE-7569

Finding: PR #7569 stale 42 days: fix performance of erfinv
Severity: high
Category: pr

Evidence

1. PR opened Jan 15, 2026 by community contributor @JeWaVe — [Source: PR fix: performance of erfinv #7568 #7569 metadata]
2. Last activity Jan 23, 2026 (42 days ago) — author asked "There was no tests before. Should I add some?" — [Source: PR comment #3789039796]
3. Zero maintainer engagement — No reviewers assigned, no maintainer comments, no reviews — [Source: PR reviews API returns empty array]
4. CI status: pending with 0 checks — No CI pipelines have run on this PR — [Source: PR status checks show "pending" with total_count: 0]
5. Related issue erfInv is very inneficient #7568 also untriaged — The linked issue is still labeled "untriaged" and has zero comments — [Source: Issue erfInv is very inneficient #7568, label: untriaged, comments: 0]
6. Valid performance improvement — Changes move coefficient computation from O(n) per call to lazy static initialization — [Source: PR diff in ProbabilityFunctions.cs]
7. Only community-contribution label — No area labels, no triage, no priority assignment — [Source: PR labels array contains only "community-contribution"]
8. Author is responsive — Author replied 8 days after opening, actively seeking guidance — [Source: Author comment on Jan 23]

Root Cause

Confidence: High

This PR has fallen into the community contribution black hole — a pattern where external contributors submit valid improvements but receive zero maintainer engagement due to triage and review process gaps. The PR is technically sound (performance optimization with lazy initialization), the author is responsive and asking for guidance, but no maintainer has:

1. Triaged the related issue (erfInv is very inneficient #7568)
2. Assigned reviewers to the PR
3. Provided feedback on the test coverage question
4. Triggered CI pipelines

The 42-day staleness is not due to author unresponsiveness or technical blockers, but rather lack of maintainer bandwidth or awareness.

Recommendations

Priority	Action	Who
🔴 Immediate	Assign a reviewer (ideally from CpuMath/performance area) to PR #7569 and triage issue #7568. Author needs guidance on test requirements.	@dotnet/ml-team
🔴 Immediate	Trigger CI pipeline manually if needed — currently shows 0 checks have run, which may indicate a fork permission issue.	DevOps/Maintainer
🟡 Short-term	Respond to author's test coverage question from Jan 23. Even if answer is "no tests needed for this path," explicit guidance prevents further staleness.	Area owner
🟡 Short-term	Apply area label (e.g., area-CpuMath) and priority label to surface PR in relevant team's backlog.	Triager
ℹ️ Long-term	Implement first-response SLA for community PRs — set expectation that all community PRs get some maintainer response within 7 days, even if just "on our radar, reviewing soon."	@dotnet/ml-team
ℹ️ Long-term	Add GitHub Actions automation to auto-assign reviewers based on file paths (e.g., CpuMath changes → assign CpuMath area owner).	DevOps

Related

• Issue erfInv is very inneficient #7568: erfInv is very inneficient — still untriaged
• Pattern: This is the author's only open PR; responsive external contributor at risk of disengagement
• Similar pattern: Search for other community-contribution PRs with no assignee/reviewer and >30 days old may reveal systemic issue

---

Investigated by repo-health-investigate • Finding: P5-STALE-7569

Generated by Repo Health — Investigate Finding

[github-actions]

📅 Daily Health Update — March 7, 2026

⚠️ Key Changes

Metric	Change	Notes
Untriaged Issues	🔴 +111 (100 → 211)	Significant spike — needs investigation
P2 Issues	↑ +198 (100 → 298)	Possible data correction or bulk relabeling
Stale PRs	→ 1 issue	PR #7569 aged to 43 days
CI Workflows	✅ All green	100% success rate maintained

🔍 Analysis

The +111 untriaged issue spike is the most significant change. Possible causes:

1. Bulk milestone removal or label changes
2. Previous count was incomplete (pagination issue)
3. Actual increase in unprocessed issues

Action needed: Manual review of untriaged issues to determine cause.

📊 Severity Status

• Critical: None
• Warning: 2 (untriaged backlog, stale PR)
• Info: 1 (high P2/P3 counts)

All findings are EXISTING (Day 1) — no new problems, no resolutions.

Generated by Repo Health Check — Orchestrator

[github-actions]

🔍 Investigation: I3-UNTRIAGED-BACKLOG-210

Finding: High untriaged backlog: 211 issues, grew +111 in 24h - investigate cause
Severity: high
Category: issue

Evidence

1. No actual spike occurred — Only 1 new issue was created between Mar 6-7 (🏥 Repo Health Dashboard #7584, the dashboard itself) — Source: GitHub Issues Search API, created:>=2026-03-06 returns 1 result

2. Current count: 224 untriaged issues (211 + dashboard) — Source: GitHub Search API label:untriaged returns total_count: 224

3. Run Get a working build #1 (Mar 6) reported "100+" issues — Used perPage:100 limit and hit pagination cap — Source: Workflow logs 22778370176

4. Run Fixed the syntax of cited example. #2 (Mar 7) counted correctly: 212 - 1 = 211 — Source: Workflow logs 22793478827 show calculation "Untriaged: 212 - 1 (dashboard) = 211 total"

5. Previous investigation (Mar 6) found 154 untriaged by processing paginated results manually — Source: Comment on 🏥 Repo Health Dashboard #7584 from investigation run 22778656021

6. Dashboard body says "100+" in multiple places — Run Get a working build #1's dashboard used "100+" notation for P2, P3, and untriaged counts, indicating awareness of pagination limits — Source: Issue 🏥 Repo Health Dashboard #7584 body from first run

7. The +111 "growth" is a measurement artifact: 211 (actual count) - 100 (truncated count) = 111 — Source: Math on reported values

Root Cause

Confidence: High

This is a false positive caused by pagination inconsistency, not an actual backlog spike.

Run #1 on March 6 used the github-list_issues tool with perPage: 100, which returns at most 100 results. The orchestrator agent likely counted the returned results and reported "100" (or rounded to "100+" for display), knowing pagination was capped but not fetching additional pages.

Run #2 on March 7 appears to have used either:

• A different counting method (GitHub Search API which returns total_count metadata), OR
• Pagination to fetch all results, OR
• A corrected query

This resulted in the accurate count of 211, creating an apparent "+111" spike that is actually just better measurement precision.

Why the inconsistency?

• The orchestrator workflow uses an AI agent to collect data, and the agent may have used different approaches on different runs
• The list_issues tool requires manual pagination (perPage max is 100), while search_issues returns total counts
• Run Get a working build #1 was the first-ever run (no previous baseline), so the agent may have used a quick sampling approach
• Run Fixed the syntax of cited example. #2 corrected the methodology after seeing the dashboard

Recommendations

Priority	Action	Who
🔴 Immediate	Update dashboard to clarify — Add note that Mar 6 count (100) was incomplete due to pagination limits. Correct the 24h delta to show "measurement correction" not "growth."	Orchestrator maintainer
🔴 Immediate	Close this investigation finding — Mark as false positive / measurement artifact. The actual triage backlog issue was already investigated separately.	This workflow
🟡 Short-term	Fix orchestrator counting — Ensure the orchestrator always uses search_issues for counts (returns total_count metadata) rather than list_issues (requires manual pagination).	Workflow author
🟡 Short-term	Standardize on pagination strategy — Document in the orchestrator workflow: for counts, always use search API; for details, use list API with pagination loop.	Workflow author
ℹ️ Long-term	Add count validation — If any metric shows >90 in first run, flag for pagination check. Add a "data quality" note if counts are capped at limits.	Workflow author

Related

• Dashboard: 🏥 Repo Health Dashboard #7584
• Previous untriaged investigation: Comment from Mar 6 — correctly found 154 issues using pagination
• Actual triage backlog: 224 untriaged issues (stable/growing slowly, not a sudden spike)
• Workflow runs:
  • Run Get a working build #1: 22778370176 — first run, capped at 100
  • Run Fixed the syntax of cited example. #2: 22793478827 — corrected count to 211

Conclusion

No action needed on the backlog itself. The 211 untriaged issues are the same issues that existed yesterday. The real triage backlog problem (129 issues >365 days old) was already investigated and has recommendations in the Mar 6 investigation comment.

This finding should be marked as RESOLVED - False Positive (Measurement Error).

---

Investigated by repo-health-investigate • Finding: I3-UNTRIAGED-BACKLOG-210

Generated by Repo Health — Investigate Finding

[github-actions]

🔍 Investigation: P5-STALE-7569

Finding: PR #7569 stale 43 days without review - performance fix for erfinv
Severity: Medium
Category: pr

---

Evidence

1. PR created: 2026-01-15 by first-time contributor @JeWaVe — Source: PR metadata
2. Associated issue: erfInv is very inneficient #7568 (untriaged) filed by same author highlighting inefficiency in ProbabilityFunctions.cs where a 1000-element array is allocated on every Erfinv() call
3. Code change: Refactors coefficient computation into lazy-loaded static readonly struct, moving allocation from O(n) per-call to O(1) lifetime — Source: PR diff
4. CI status: Pending (no checks run) — Source: commit status API
5. Review status: No reviewers assigned, no reviews submitted — [Source: PR metadata]
6. Coverage concern: Codecov reports 0% patch coverage (10 lines missing test coverage), author asked "Should I add some?" 8 days after PR creation — Source: PR comment 2026-01-23
7. No response: Zero maintainer engagement since filing (43+ days)
8. Community pattern: Recent community PRs merged within 8-45 days (median ~13 days) — [Source: GitHub search for merged community contributions since 2024-01-01]
9. Author history: No previous commits or merged PRs in this repository — [Source: git log + GitHub search]
10. Related work: Same file (ProbabilityFunctions.cs) last modified 2026-03-06 in unrelated commit — [Source: git log]

---

Root Cause

Confidence: High

This PR stalled due to lack of maintainer triage and review assignment:

1. No automated review assignment: Repository has no CODEOWNERS file, so community PRs require manual reviewer assignment
2. Limited maintainer bandwidth: Only 1 active committer since 2025-12-01 (Jan Krivanek), repository merged 23 PRs in past 4 months (avg 5.75/month)
3. Missing test coverage: While contributor offered to add tests, no maintainer guidance was provided on whether tests are needed or how to structure them
4. Untriaged associated issue: Issue erfInv is very inneficient #7568 still marked "untriaged" after 51 days, indicating broader triage backlog

The PR itself appears technically sound (simple refactoring from per-call allocation to static lazy-loaded coefficients), but fell through the cracks due to process gaps.

---

Recommendations

Priority	Action	Who
🔴 Immediate	Assign reviewer to PR #7569 — Based on recent merge activity, assign (a href="https://github.com/JanKrivanek")`@JanKrivanek`(/a) or (a href="https://github.com/tarekgh")`@tarekgh`(/a) (both merged performance-related PRs recently). Provide guidance on test requirements.	Repo maintainers
🔴 Immediate	Triage issue #7568 — Remove "untriaged" label and confirm whether performance fix is desired (original code comment admits inefficiency)	Repo maintainers
🟡 Short-term	Create CODEOWNERS file — Map src/Microsoft.ML.CpuMath/ and other core areas to specific maintainers for automatic review assignment on community PRs	Repo maintainers
🟡 Short-term	Document test requirements — Update CONTRIBUTING.md to clarify when tests are required vs. optional for performance refactorings of internal utilities	Repo maintainers
ℹ️ Long-term	Add PR staleness automation — Configure bot to ping reviewers when community PRs have no activity for 14+ days (similar to the repo-health-check workflow)	Repo maintainers

---

Related

• Issue: erfInv is very inneficient #7568 — original bug report (untriaged)
• Pattern: 10 open PRs currently (as of 2026-03-07), some with similar staleness patterns
• Precedent: Community PR Fix bug that causes Merge to fail with empty DataFrames #7573 merged in 8 days (similar scope: bug fix, test coverage added)

---

Technical Merit Assessment

The proposed change is architecturally sound:

• ✅ Eliminates repeated O(n²) computation (1000 array elements × nested loop)
• ✅ Thread-safe (CLR guarantees static constructor runs once)
• ✅ Suppresses CA2207 with explanatory comment (appropriate for perf optimization)
• ⚠️ Missing test coverage (but original code also had none)

Recommendation: This PR should be reviewed and either merged (with or without tests) or closed with clear rationale within 7 days.

---

Investigated by repo-health-investigate • Finding: P5-STALE-7569 • Date: 2026-03-07

Generated by Repo Health — Investigate Finding

[github-actions]

📅 Daily Update — 2026-03-08

Summary

Repository health: 🟡 Warning (no critical issues)

Changes Since Last Run

• ⚠️ Untriaged backlog grew: 100+ → 212 issues (4× threshold)
• ✅ Stale PRs improved: 7 total → 7 total (but only 1 non-baselined)
• ✅ Workflows stable: No failures in backport.yml or locker.yml

Current Snapshot

Metric	Count	Status
P0 Issues	1	✅ Baselined
P1 Issues	23	→ Stable
Untriaged	212	⚠️ Needs attention
Open PRs	14	✅ Healthy
Stale PRs	1 (+ 6 baselined)	✅ Improved

Recommendations

1. High Priority: Triage the 212 untriaged issues — this is 4× the acceptable threshold of 50
2. Monitor P1 issues to ensure critical bugs have owners
3. Continue current PR review pace

---

View full details in the dashboard body above.

Generated by Repo Health Check — Orchestrator