Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-20 09:48 UTC

datafuse-extras / arrow2

transmute-free Rust library to work with the Arrow format

RustApache-2.0★ 9 stars⑂ 5 forkssince Jul 2021forkView on GitHub ↗
KindLibraryCommand-line toolhow this is determined

datafuse-extras/arrow2 holds a health index of 26 out of 100, placing it in the At Risk band. It scores highest on AI Readiness (64/100) and lowest on Vitality (13/100). It was last updated 850 days ago. A single contributor accounts for most of its recent work.

26
overall / 100
At Risk

Software 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.

26
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)
VitalityCommunity &AdoptionSustainability &GovernanceEngineeringQualitySecurityAI Readiness

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 32 is calibrated to 26 on the published index scale (record calibration 2026-08-02).

Ownership

datafuse-extrasOrganization
4 followers59 public repossince Jun 2021

This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
crates.ioarrow2points to another repo — not scored0.18.0181,961381099 days agoarrowanalytics

Metrics by category

Vitality

Is the project alive — is code being written and are releases shipping?

13Critical · 21% of overall

Development activity

1Critical
How it's scored
0/36Push recency — last push 850 days ago
0/36Commit cadence — 0/52 weeks with commits
0/18Commit volume — 0 commits in the last year
0/10OpenSSF Scorecard: Maintained — 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
Inputs used
commits_last_year0
human_commit_share1
days_since_last_push850
active_weeks_last_year0

Release discipline

32At Risk
How it's scored
16.2/27Ships releases — 1 version tags (no GitHub releases)
0/36Release recency — latest release 1,888 days ago
12.6/27Release cadence — cadence unknown (single release)
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count1
latest_release_tagv0.1.0
releases_from_tagsyes
days_since_latest_release1,888
mean_days_between_releases—
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?

22At Risk · 17% of overall

Popularity & adoption

20At Risk
How it's scored
14.6/60Stars — 9 stars
5/25Forks — 5 forks
0/15Watchers — 0 watchers
Inputs used
forks5
stars9
watchers0
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

25At Risk
How it's scored
0/22.5README
22.5/22.5License — recognized license (Apache-2.0)
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeno
has_licenseno
readme_badges4
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_servicescodecov.io, github.com, shields.io
has_pull_request_templateno

Sustainability & Governance

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?

36Weak · 23% of overall

Maintainer resilience (bus factor)

39Weak
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
6.5/22.5Commit distribution — top contributor authored 71% of commits
13.5/13.5Contributor breadth — 100 contributors
10/10OpenSSF Scorecard: Contributors — project has 18 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled100
top_contributor_share0.712

Issue & PR responsiveness

11Critical
How it's scored
0/42Issue resolution — no issues or no data
5/30PR acceptance — 1/6 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
0/15OpenSSF Scorecard: Code-Review — Found 0/30 approved changesets -- score normalized to 0
Inputs used
merged_prs1
open_issues0
closed_issues0
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d0
issue_closed_ratio—
closed_unmerged_prs5
first_time_authors_30d0
first_time_prs_merged_30d0
first_time_prs_decided_30d0
Excluded from scoring (no data or not applicable): Issue resolution, Newcomer PR acceptance. Remaining weights renormalized.

Ownership & stewardship

58Moderate
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
5/25Owner reach — 4 followers of datafuse-extras
23.5/25Track record — 59 public repos, account ~5 yr old
Inputs used
followers4
owner_typeOrganization
is_verifiedno
owner_logindatafuse-extras
public_repos59
account_age_days1,936

Engineering Quality

Are baseline engineering and documentation practices in place?

50Moderate · 19% of overall

Engineering practices

60Moderate
How it's scored
24/24CI workflows — 9 workflow(s)
24/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
0/6.4.editorconfig
0/20OpenSSF Scorecard: CI-Tests — no data
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configno
has_precommit_configno
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: CI-Tests. Remaining weights renormalized.

Documentation

35Weak
How it's scored
0/30README
25/25Documentation directory
0/15Documentation / homepage site
0/10Repository description
0/10Topics
10/10Wiki
Inputs used
topics—
has_wikiyes
homepage—
docs_site—
has_readmeno
has_docs_diryes
has_descriptionno

Security

Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?

33At Risk · 16% of overall

Security posture

33At Risk
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — branch protection not enabled on development/release branches
0/2.5CI-Tests — no data
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 0/30 approved changesets -- score normalized to 0
2.5/2.5Contributors — project has 18 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
0/7.5Dependency-Update-Tool — no update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
0/7.5Maintained — 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
0/5Packaging — no data
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
0/5SAST — no SAST tool detected
0/5Security-Policy — security policy file not detected
0/7.5Signed-Releases — no data
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate3.3
Excluded from scoring (no data or not applicable): CI-Tests, 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.

64Moderate · 4% of overall

Agent context & guidance

40Weak
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 91 of 100 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.91
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

56Moderate
How it's scored
12.6/18One-command bootstrap — Cargo.toml, arrow-odbc-integration-testing/Cargo.toml, arrow-parquet-integration-testing/Cargo.toml (toolchain convention, no task runner)
22/22Automated tests
0/11Lint / format config
11/11Static type checking — Rust (statically typed)
10/10Reproducible environment — Dockerfile
0/10Demonstrated agent practice — no agent-authored commits among the last 100
0/8Automated maintenance — no automated dependency updates observed
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsyes
lockfiles—
has_dockerfileyes
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configno
typecheck_configs—
agent_commit_share0
toolchain_manifestsCargo.toml, arrow-odbc-integration-testing/Cargo.toml, arrow-parquet-integration-testing/Cargo.toml, arrow-pyarrow-integration-testing/Cargo.toml, examples/ipc_pyarrow/Cargo.toml, examples/parquet_read_parallel/Cargo.toml, examples/parquet_write_parallel/Cargo.toml, examples/s3/Cargo.toml, integration-testing/Cargo.toml
dependency_bot_commit_share0

Code legibility for models

100Exceptional
How it's scored
45/45Type-checkable code — Rust (statically typed)
54.9/55Manageable file sizes — 1/679 source files over 60KB
Inputs used
primary_languageRust
largest_source_bytes80,466
source_files_sampled679
oversized_source_files1

Machine-readable interfaces

100Exceptional
How it's scored
0/40API schema (OpenAPI/GraphQL/proto) — not applicable to this kind of software
0/20MCP server — not applicable to this kind of software
40/40Runnable examples — examples
Inputs used
example_dirsexamples
has_mcp_signalno
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

9GitHub stars
100contributors
0commits, last 12 months
850days since last push
1releases
1bus factor
0open issues
crates.io, PyPIpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • Community profile unavailable
  • crates package 'arrow2' points at a different repository (https://github.com/jorgecarleitao/arrow2); excluded from ecosystem scoring
  • Could not fetch crates package 'arrow-integration-testing' from its registry
  • 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
  • No resolved dependencies carried a version and a supported ecosystem

More detail

Star and fork history 0 ★ / 5 ⇿
0Stars
5Forks

When each star and fork was added, collected from GitHub and bucketed by day. Cumulative growth sits directly above the daily additions it is made of, so the two read against each other: steady organic accretion looks nothing like an abrupt, short-lived burst. Where that difference is measurable, it is reported as growth authenticity.

12345512021-082022-022022-09
OpenSSF Scorecard 3.3 / 10
3.3aggregate

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).Scorecard v5.5.0 · 2026-09-20 09:48 UTC

10Binary-Artifactsno binaries found in the repo
0Branch-Protectionbranch protection not enabled on development/release branches
n/aCI-Testsno pull request found
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 0/30 approved changesets -- score normalized to 0
10Contributorsproject has 18 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
0Dependency-Update-Toolno update tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
0Maintained0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
n/aPackagingpackaging workflow not detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0SASTno SAST tool detected
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 71
RegistryPackageVersion constraintManifest
crates.ioforeign_vec0.1.0Cargo.toml
crates.ioeither1.9Cargo.toml
crates.ionum-traits0.2Cargo.toml
crates.iodyn-clone1Cargo.toml
crates.iobytemuck1Cargo.toml
crates.iochrono0.4.31Cargo.toml
crates.ioethnum1Cargo.toml
crates.iohash_hasher^2.0.3Cargo.toml
crates.iosimdutf80.1.4Cargo.toml
crates.iohashbrown0.14Cargo.toml
crates.iochrono-tz0.8Cargo.toml
crates.iolexical-core0.8Cargo.toml
crates.iocsv^1.1Cargo.toml
crates.iocsv-core0.1Cargo.toml
crates.iocsv-async^1.1Cargo.toml
crates.ioregex1.9Cargo.toml
crates.ioregex-syntax0.7Cargo.toml
crates.iostreaming-iterator0.1Cargo.toml
crates.iofallible-streaming-iterator0.1Cargo.toml
crates.iojson-deserializer0.4.4Cargo.toml
crates.ioindexmap^1.6Cargo.toml
crates.iocomfy-table6.0Cargo.toml
crates.ioarrow-format0.8Cargo.toml
crates.iohex^0.4Cargo.toml
crates.iolz41.24Cargo.toml
crates.iozstd0.12Cargo.toml
crates.iorand0.8Cargo.toml
crates.ioitertools^0.10Cargo.toml
crates.iobase640.21.0Cargo.toml
crates.iofutures0.3Cargo.toml
crates.ioasync-stream0.3.2Cargo.toml
crates.ioavro-schema0.3Cargo.toml
crates.ioorc-format0.3.0Cargo.toml
crates.ioserde^1.0Cargo.toml
crates.ioserde_derive^1.0Cargo.toml
crates.ioserde_json^1.0Cargo.toml
crates.iostrength_reduce0.2Cargo.toml
crates.iomultiversion0.7.3Cargo.toml
crates.ioodbc-api0.36Cargo.toml
crates.ioahash0.8Cargo.toml
crates.iomemchr2.6Cargo.toml
crates.ioarrow-buffer>=40Cargo.toml
crates.ioarrow-schema>=40Cargo.toml
crates.ioarrow-data>=40Cargo.toml
crates.ioarrow-array>=40Cargo.toml
crates.ioparquet20.17Cargo.toml
crates.ioarrow2—arrow-odbc-integration-testing/Cargo.toml
crates.iolazy_static1.4.0arrow-odbc-integration-testing/Cargo.toml
crates.iostdext0.3.1arrow-odbc-integration-testing/Cargo.toml
crates.ioclap^3arrow-parquet-integration-testing/Cargo.toml
crates.ioarrow2—arrow-parquet-integration-testing/Cargo.toml
crates.ioflate2^1arrow-parquet-integration-testing/Cargo.toml
crates.ioserde^1.0arrow-parquet-integration-testing/Cargo.toml
crates.ioserde_derive^1.0arrow-parquet-integration-testing/Cargo.toml
crates.ioserde_json^1.0arrow-parquet-integration-testing/Cargo.toml
crates.ioarrow2—arrow-pyarrow-integration-testing/Cargo.toml
crates.iopyo30.14arrow-pyarrow-integration-testing/Cargo.toml
crates.ioarrow2—integration-testing/Cargo.toml
crates.ioarrow-format0.8integration-testing/Cargo.toml
crates.ioasync-trait0.1.41integration-testing/Cargo.toml
crates.ioclap^3integration-testing/Cargo.toml
crates.iofutures0.3integration-testing/Cargo.toml
crates.iohex0.4integration-testing/Cargo.toml
crates.ioprost0.11integration-testing/Cargo.toml
crates.ioserde1.0integration-testing/Cargo.toml
crates.ioserde_derive1.0integration-testing/Cargo.toml
crates.ioserde_json1.0integration-testing/Cargo.toml
crates.iotokio1.0integration-testing/Cargo.toml
crates.iotonic0.8.0integration-testing/Cargo.toml
crates.iotracing-subscriber0.3.1integration-testing/Cargo.toml
crates.ioasync-stream0.3.2integration-testing/Cargo.toml
All dependencies 57

Full resolved dependency set from the GitHub dependency graph: 44 direct and 13 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.ioahash—direct
crates.ioarrow-format—direct
crates.ioasync-stream—direct
crates.ioasync-trait—direct
crates.ioavro-schema—direct
crates.iobase64—direct
crates.iobytemuck—direct
crates.iochrono—direct
crates.iochrono-tz—direct
crates.ioclap—direct
crates.iocomfy-table—direct
crates.iocsv—direct
crates.iocsv-async—direct
crates.iocsv-core—direct
crates.ioeither—direct
crates.iofallible-streaming-iterator—direct
crates.ioflate2—direct
crates.iofutures—direct
crates.iohash_hasher—direct
crates.iohex—direct
crates.ioindexmap—direct
crates.ioitertools—direct
crates.iolazy_static—direct
crates.iolexical-core—direct
crates.iolz4—direct
crates.iomultiversion—direct
crates.ionum-traits—direct
crates.ioodbc-api—direct
crates.ioparquet2—direct
crates.ioprost—direct
crates.iopyo3—direct
crates.iorand—direct
crates.ioregex—direct
crates.ioserde—direct
crates.ioserde_derive—direct
crates.ioserde_json—direct
crates.iosimdutf8—direct
crates.iostdext—direct
crates.iostreaming-iterator—direct
crates.iostrength_reduce—direct
crates.iotokio—direct
crates.iotonic—direct
crates.iotracing-subscriber—direct
crates.iozstd—direct
crates.ioavro-rs—indirect
crates.iocrc—indirect
crates.iocriterion—indirect
crates.iocrossbeam-channel—indirect
crates.iodoc-comment—indirect
crates.iolibflate—indirect
crates.iolog—indirect
crates.ioproptest—indirect
crates.iorange-reader—indirect
crates.iorayon—indirect
crates.iorust-s3—indirect
crates.iosnap—indirect
crates.iotokio-util—indirect
Dependency advisories not assessed

Advisory matching could not run for this report: No resolved dependencies carried a version and a supported ecosystem

Raw JSON report machine-readable

Feedback

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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 v0.34.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statistics — crates.io.