Public recordCritical
Software health reportschema 0.14.0 · metrics 2.10.0 · 2026-07-19 00:08 UTC
jorgecarleitao / arrow2
Transmute-free Rust library to work with the Arrow format
jorgecarleitao/arrow2 holds a health index of 19 out of 100, placing it in the Critical band. It scores highest on Community & Adoption (69/100) and lowest on Vitality (21/100). The repository is archived, so no further maintenance is expected.
19
overall / 100Software health index
Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.
19
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
Score profile
Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.
The weighted overall 49 is calibrated to 48 on the published index scale (record calibration 2026-08-02).
Ownership
Jorge LeitaoPersonal account
650 followers40 public repossince Nov 2012Munin Data ApS
This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.
Package ecosystems
| Registry | Package | Version | Downloads / mo | Versions | Last publish | Tags |
|---|---|---|---|---|---|---|
| crates.io | arrow2 | 0.18.0 | 290,804 | 38 | 1035 days ago | arrowanalytics |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
21
Development activity
1Critical
Abandonment alert
Work has arrived and nobody has attended to it
archived on GitHub by its maintainersOverall rating: Critical ceiling
Silence alone is never the finding — a small, finished library may need no commits for years. This alert requires both: no human commit for a long time, and obligations the project is visibly not discharging. Automated commits do not count as maintenance.
How abandonment is assessedHow it's scored
| 0/36 | Push recency — last push 872 days ago |
| 0/36 | Commit cadence — 0/52 weeks with commits |
| 0/18 | Commit volume — 0 commits in the last year |
| 0/10 | OpenSSF Scorecard: Maintained — project is archived |
Inputs used
| commits_last_year | 0 |
| human_commit_share | — |
| days_since_last_push | 872 |
| active_weeks_last_year | 0 |
Release discipline
52Moderate
How it's scored
| 27/27 | Ships releases — 22 releases published |
| 0/36 | Release recency — latest release 1,098 days ago |
| 19.8/27 | Release cadence — a release every ~49.4 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 22 |
| latest_release_tag | v0.17.0 |
| releases_from_tags | no |
| days_since_latest_release | 1,098 |
| mean_days_between_releases | 49.4 |
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.
Community & Adoption
Does the project have users, downloads, attention, and a welcoming setup for contributors?
69
Popularity & adoption
72Good
How it's scored
| 49.1/60 | Stars — 1,063 stars |
| 19.6/25 | Forks — 227 forks |
| 3.3/15 | Watchers — 5 watchers |
Inputs used
| forks | 227 |
| stars | 1,063 |
| watchers | 5 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
50Moderate
How it's scored
| 22.5/22.5 | README |
| 22.5/22.5 | License — recognized license (Apache-2.0) |
| 0/18 | CONTRIBUTING guide |
| 0/13.5 | Code of conduct |
| 0/7.2 | Issue template |
| 0/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| readme_badges | — |
| has_contributing | no |
| has_issue_template | no |
| has_code_of_conduct | no |
| readme_badge_services | — |
| has_pull_request_template | no |
Ecosystem adoption (downloads)
91Excellent
How it's scored
| 72.8/80 | Monthly downloads — 290,804 downloads/month across crates |
| 0/20 | Registry dependents — not reported by this ecosystem |
Inputs used
| packages | arrow2 |
| dependents | — |
| ecosystems | crates |
| total_downloads | 7,127,109 |
| monthly_downloads | 290,804 |
| unverified_packages_excluded | — |
Excluded from scoring (no data or not applicable): Registry dependents. Remaining weights renormalized.
Sustainability & Governance
Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?
62
How it's scored
| 9/54 | Bus factor — 1 contributor(s) cover half of all commits |
| 6.5/22.5 | Commit distribution — top contributor authored 71% of commits |
| 13.5/13.5 | Contributor breadth — 100 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 17 contributing companies or organizations |
Inputs used
| bus_factor | 1 |
| contributors_sampled | 100 |
| top_contributor_share | 0.712 |
Issue & PR responsiveness
81Excellent
How it's scored
| 30.6/42 | Issue resolution — 73% of issues closed |
| 28.3/30 | PR acceptance — 1,093/1,160 decided PRs merged |
| 0/13 | Newcomer PR acceptance — no first-time contributor's PR decided in 30d |
| 12/15 | OpenSSF Scorecard: Code-Review — Found 24/30 approved changesets -- score normalized to 8 |
Inputs used
| merged_prs | 1,093 |
| open_issues | 107 |
| closed_issues | 287 |
| prs_merged_7d | — |
| prs_decided_7d | — |
| prs_merged_30d | — |
| prs_decided_30d | — |
| issue_closed_ratio | 0.728 |
| closed_unmerged_prs | 67 |
| first_time_authors_30d | — |
| first_time_prs_merged_30d | — |
| first_time_prs_decided_30d | — |
Excluded from scoring (no data or not applicable): Newcomer PR acceptance. Remaining weights renormalized.
Ownership & stewardship
67Good
How it's scored
| 10/30 | Ownership backing — personal (user) account |
| 0/20 | Verified domain — not applicable to user accounts |
| 20.2/25 | Owner reach — 650 followers of jorgecarleitao |
| 23.7/25 | Track record — 40 public repos, account ~13 yr old |
Inputs used
| followers | 650 |
| owner_type | User |
| is_verified | — |
| owner_login | jorgecarleitao |
| public_repos | 40 |
| account_age_days | 4,997 |
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.
Package maintenance
69Good
How it's scored
| 25/25 | Published & resolvable — 1 package(s) on crates |
| 4/35 | Publish recency — latest publish 1,035 days ago |
| 20/20 | Version history — 38 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | arrow2 |
| ecosystems | crates |
| any_deprecated | no |
| min_days_since_publish | 1,035 |
Engineering Quality
Are baseline engineering and documentation practices in place?
51
Engineering practices
48Weak
How it's scored
| 24/24 | CI workflows — 9 workflow(s) |
| 24/24 | Tests present |
| 0/16 | Linter config |
| 0/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 0/20 | OpenSSF Scorecard: CI-Tests — 0 out of 30 merged PRs checked by a CI test -- score normalized to 0 |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | no |
| has_precommit_config | no |
Documentation
55Moderate
How it's scored
| 30/30 | README |
| 0/25 | Documentation directory |
| 15/15 | Documentation / homepage site — https://docs.rs/arrow2 |
| 10/10 | Repository description |
| 0/10 | Topics |
| 0/10 | Wiki |
Inputs used
| topics | — |
| has_wiki | no |
| homepage | — |
| docs_site | https://docs.rs/arrow2 |
| has_readme | yes |
| has_docs_dir | no |
| has_description | yes |
Security
Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?
42
Security posture
42Weak
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 0/7.5 | Branch-Protection — no data |
| 0/2.5 | CI-Tests — 0 out of 30 merged PRs checked by a CI test -- score normalized to 0 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 6/7.5 | Code-Review — Found 24/30 approved changesets -- score normalized to 8 |
| 2.5/2.5 | Contributors — project has 17 contributing companies or organizations |
| 10/10 | Dangerous-Workflow — no dangerous workflow patterns detected |
| 0/7.5 | Dependency-Update-Tool — no update tool detected |
| 0/5 | Fuzzing — project is not fuzzed |
| 2.5/2.5 | License — license file detected |
| 0/7.5 | Maintained — project is archived |
| 0/5 | Packaging — no data |
| 0/5 | Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
| 0/5 | SAST — SAST tool is not run on all commits -- score normalized to 0 |
| 0/5 | Security-Policy — security policy file not detected |
| 0/7.5 | Signed-Releases — no data |
| 0/7.5 | Token-Permissions — detected GitHub workflow tokens with excessive permissions |
| 7.5/7.5 | Vulnerabilities — 0 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 15 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 3 |
| scorecard_aggregate | 4.2 |
Excluded from scoring (no data or not applicable): Branch-Protection, Packaging, Signed-Releases. Remaining weights renormalized.
AI Readiness
How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.
51
Agent context & guidance
1Critical
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 0/40 | Legible commit history — no data |
Inputs used
| has_llms_txt | no |
| llms_txt_url | — |
| legible_history_share | — |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.
Verify loop (build / test / typecheck)
52Moderate
How it's scored
| 0/18 | One-command bootstrap |
| 22/22 | Automated tests |
| 0/11 | Lint / format config |
| 11/11 | Static type checking — Rust (statically typed) |
| 10/10 | Reproducible environment — Dockerfile |
| 0/10 | Demonstrated agent practice — no data |
| 0/8 | Automated maintenance — no data |
| 0/10 | OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
Inputs used
| has_nix | no |
| has_tests | yes |
| lockfiles | — |
| has_dockerfile | yes |
| typed_language | yes |
| bootstrap_files | — |
| has_devcontainer | no |
| has_linter_config | no |
| typecheck_configs | — |
| agent_commit_share | — |
| toolchain_manifests | — |
| dependency_bot_commit_share | — |
Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance. Remaining weights renormalized.
Code legibility for models
100Exceptional
How it's scored
| 45/45 | Type-checkable code — Rust (statically typed) |
| 54.9/55 | Manageable file sizes — 1/679 source files over 60KB |
Inputs used
| primary_language | Rust |
| largest_source_bytes | 80,466 |
| source_files_sampled | 679 |
| oversized_source_files | 1 |
Machine-readable interfaces
100Exceptional
How it's scored
| 0/40 | API schema (OpenAPI/GraphQL/proto) — not applicable to this kind of software |
| 0/20 | MCP server — not applicable to this kind of software |
| 40/40 | Runnable examples — examples |
Inputs used
| example_dirs | examples |
| has_mcp_signal | no |
| api_schema_files | — |
| interfaces_expected_of | — |
Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto), MCP server. Remaining weights renormalized.
Key facts
1,063GitHub stars
100contributors
0commits, last 12 months
872days since last push
22releases
1bus factor
107open issues
crates.io, PyPIpackage ecosystems
Data collection warnings
- Could not fetch crates package 'arrow-odbc-integration-testing' from its registry
- Could not fetch crates package 'arrow-parquet-integration-testing' from its registry
- Could not fetch crates package 'arrow-pyarrow-integration-testing' from its registry
- Could not fetch crates package 'arrow-integration-testing' from its registry
More detail
OpenSSF Scorecard 4.2 / 10
4.2aggregate
Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).
| 10 | Binary-Artifacts | no binaries found in the repo |
| n/a | Branch-Protection | internal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md |
| 0 | CI-Tests | 0 out of 30 merged PRs checked by a CI test -- score normalized to 0 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 8 | Code-Review | Found 24/30 approved changesets -- score normalized to 8 |
| 10 | Contributors | project has 17 contributing companies or organizations |
| 10 | Dangerous-Workflow | no dangerous workflow patterns detected |
| 0 | Dependency-Update-Tool | no update tool detected |
| 0 | Fuzzing | project is not fuzzed |
| 10 | License | license file detected |
| 0 | Maintained | project is archived |
| n/a | Packaging | packaging workflow not detected |
| 0 | Pinned-Dependencies | dependency not pinned by hash detected -- score normalized to 0 |
| 0 | SAST | SAST tool is not run on all commits -- score normalized to 0 |
| 0 | Security-Policy | security policy file not detected |
| n/a | Signed-Releases | no releases found |
| 0 | Token-Permissions | detected GitHub workflow tokens with excessive permissions |
| 10 | Vulnerabilities | 0 existing vulnerabilities detected |
Direct dependencies 71
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| crates.io | foreign_vec | 0.1.0 | Cargo.toml |
| crates.io | either | 1.9 | Cargo.toml |
| crates.io | num-traits | 0.2 | Cargo.toml |
| crates.io | dyn-clone | 1 | Cargo.toml |
| crates.io | bytemuck | 1 | Cargo.toml |
| crates.io | chrono | 0.4.31 | Cargo.toml |
| crates.io | ethnum | 1 | Cargo.toml |
| crates.io | hash_hasher | ^2.0.3 | Cargo.toml |
| crates.io | simdutf8 | 0.1.4 | Cargo.toml |
| crates.io | hashbrown | 0.14 | Cargo.toml |
| crates.io | chrono-tz | 0.8 | Cargo.toml |
| crates.io | lexical-core | 0.8 | Cargo.toml |
| crates.io | csv | ^1.1 | Cargo.toml |
| crates.io | csv-core | 0.1 | Cargo.toml |
| crates.io | csv-async | ^1.1 | Cargo.toml |
| crates.io | regex | 1.9 | Cargo.toml |
| crates.io | regex-syntax | 0.7 | Cargo.toml |
| crates.io | streaming-iterator | 0.1 | Cargo.toml |
| crates.io | fallible-streaming-iterator | 0.1 | Cargo.toml |
| crates.io | json-deserializer | 0.4.4 | Cargo.toml |
| crates.io | indexmap | ^1.6 | Cargo.toml |
| crates.io | comfy-table | 6.0 | Cargo.toml |
| crates.io | arrow-format | 0.8 | Cargo.toml |
| crates.io | hex | ^0.4 | Cargo.toml |
| crates.io | lz4 | 1.24 | Cargo.toml |
| crates.io | zstd | 0.12 | Cargo.toml |
| crates.io | rand | 0.8 | Cargo.toml |
| crates.io | itertools | ^0.10 | Cargo.toml |
| crates.io | base64 | 0.21.0 | Cargo.toml |
| crates.io | futures | 0.3 | Cargo.toml |
| crates.io | async-stream | 0.3.2 | Cargo.toml |
| crates.io | avro-schema | 0.3 | Cargo.toml |
| crates.io | orc-format | 0.3.0 | Cargo.toml |
| crates.io | serde | ^1.0 | Cargo.toml |
| crates.io | serde_derive | ^1.0 | Cargo.toml |
| crates.io | serde_json | ^1.0 | Cargo.toml |
| crates.io | strength_reduce | 0.2 | Cargo.toml |
| crates.io | multiversion | 0.7.3 | Cargo.toml |
| crates.io | odbc-api | 0.36 | Cargo.toml |
| crates.io | ahash | 0.8 | Cargo.toml |
| crates.io | memchr | 2.6 | Cargo.toml |
| crates.io | arrow-buffer | >=40 | Cargo.toml |
| crates.io | arrow-schema | >=40 | Cargo.toml |
| crates.io | arrow-data | >=40 | Cargo.toml |
| crates.io | arrow-array | >=40 | Cargo.toml |
| crates.io | parquet2 | 0.17 | Cargo.toml |
| crates.io | arrow2 | — | arrow-odbc-integration-testing/Cargo.toml |
| crates.io | lazy_static | 1.4.0 | arrow-odbc-integration-testing/Cargo.toml |
| crates.io | stdext | 0.3.1 | arrow-odbc-integration-testing/Cargo.toml |
| crates.io | clap | ^3 | arrow-parquet-integration-testing/Cargo.toml |
| crates.io | arrow2 | — | arrow-parquet-integration-testing/Cargo.toml |
| crates.io | flate2 | ^1 | arrow-parquet-integration-testing/Cargo.toml |
| crates.io | serde | ^1.0 | arrow-parquet-integration-testing/Cargo.toml |
| crates.io | serde_derive | ^1.0 | arrow-parquet-integration-testing/Cargo.toml |
| crates.io | serde_json | ^1.0 | arrow-parquet-integration-testing/Cargo.toml |
| crates.io | arrow2 | — | arrow-pyarrow-integration-testing/Cargo.toml |
| crates.io | pyo3 | 0.14 | arrow-pyarrow-integration-testing/Cargo.toml |
| crates.io | arrow2 | — | integration-testing/Cargo.toml |
| crates.io | arrow-format | 0.8 | integration-testing/Cargo.toml |
| crates.io | async-trait | 0.1.41 | integration-testing/Cargo.toml |
| crates.io | clap | ^3 | integration-testing/Cargo.toml |
| crates.io | futures | 0.3 | integration-testing/Cargo.toml |
| crates.io | hex | 0.4 | integration-testing/Cargo.toml |
| crates.io | prost | 0.11 | integration-testing/Cargo.toml |
| crates.io | serde | 1.0 | integration-testing/Cargo.toml |
| crates.io | serde_derive | 1.0 | integration-testing/Cargo.toml |
| crates.io | serde_json | 1.0 | integration-testing/Cargo.toml |
| crates.io | tokio | 1.0 | integration-testing/Cargo.toml |
| crates.io | tonic | 0.8.0 | integration-testing/Cargo.toml |
| crates.io | tracing-subscriber | 0.3.1 | integration-testing/Cargo.toml |
| crates.io | async-stream | 0.3.2 | integration-testing/Cargo.toml |
All dependencies 71
Full resolved dependency set from the GitHub dependency graph: 56 direct and 15 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| crates.io | ahash | — | direct |
| crates.io | arrow-array | — | direct |
| crates.io | arrow-buffer | — | direct |
| crates.io | arrow-data | — | direct |
| crates.io | arrow-format | — | direct |
| crates.io | arrow-schema | — | direct |
| crates.io | async-stream | — | direct |
| crates.io | async-trait | — | direct |
| crates.io | avro-schema | — | direct |
| crates.io | base64 | — | direct |
| crates.io | bytemuck | — | direct |
| crates.io | chrono | — | direct |
| crates.io | chrono-tz | — | direct |
| crates.io | clap | — | direct |
| crates.io | comfy-table | — | direct |
| crates.io | csv | — | direct |
| crates.io | csv-async | — | direct |
| crates.io | csv-core | — | direct |
| crates.io | dyn-clone | — | direct |
| crates.io | either | — | direct |
| crates.io | ethnum | — | direct |
| crates.io | fallible-streaming-iterator | — | direct |
| crates.io | flate2 | — | direct |
| crates.io | foreign_vec | — | direct |
| crates.io | futures | — | direct |
| crates.io | hash_hasher | — | direct |
| crates.io | hashbrown | — | direct |
| crates.io | hex | — | direct |
| crates.io | indexmap | — | direct |
| crates.io | itertools | — | direct |
| crates.io | json-deserializer | — | direct |
| crates.io | lazy_static | — | direct |
| crates.io | lexical-core | — | direct |
| crates.io | lz4 | — | direct |
| crates.io | memchr | — | direct |
| crates.io | multiversion | — | direct |
| crates.io | num-traits | — | direct |
| crates.io | odbc-api | — | direct |
| crates.io | orc-format | — | direct |
| crates.io | parquet2 | — | direct |
| crates.io | prost | — | direct |
| crates.io | pyo3 | — | direct |
| crates.io | rand | — | direct |
| crates.io | regex | — | direct |
| crates.io | regex-syntax | — | direct |
| crates.io | serde | — | direct |
| crates.io | serde_derive | — | direct |
| crates.io | serde_json | — | direct |
| crates.io | simdutf8 | — | direct |
| crates.io | stdext | — | direct |
| crates.io | streaming-iterator | — | direct |
| crates.io | strength_reduce | — | direct |
| crates.io | tokio | — | direct |
| crates.io | tonic | — | direct |
| crates.io | tracing-subscriber | — | direct |
| crates.io | zstd | — | direct |
| crates.io | avro-rs | — | indirect |
| crates.io | criterion | — | indirect |
| crates.io | crossbeam-channel | — | indirect |
| crates.io | doc-comment | — | indirect |
| crates.io | getrandom | — | indirect |
| crates.io | log | — | indirect |
| crates.io | proptest | — | indirect |
| crates.io | range-reader | — | indirect |
| crates.io | rayon | — | indirect |
| crates.io | rust-s3 | — | indirect |
| crates.io | rustc_version | — | indirect |
| crates.io | sample-arrow2 | — | indirect |
| crates.io | sample-std | — | indirect |
| crates.io | sample-test | — | indirect |
| crates.io | tokio-util | — | indirect |
Raw JSON report machine-readable
Feedback
Spotted something off in this report, or have thoughts to share? Wrong measurements, missed tooling, ideas, questions — anything is welcome. Every message is read and gets a response.
Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.
Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v2.10.0, schema v0.14.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics — crates.io.