Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-13 16:46 UTC

projectnessie / nessie

Nessie: Transactional Catalog for Data Lakes with Git-like semantics

JavaApache-2.0★ 1,510 stars⑂ 196 forkssince Apr 2020View on GitHub ↗
KindNetwork servicehow this is determined

projectnessie/nessie holds a health index of 90 out of 100, placing it in the Excellent band. It scores highest on Vitality (96/100) and lowest on Sustainability & Governance (62/100). It was last updated today. A single contributor accounts for most of its recent work.

90
overall / 100
Excellent

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.

90
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 76 is calibrated to 90 on the published index scale (record calibration 2026-08-02).

Ownership

Project NessieOrganization · verified domain
60 followers17 public repossince Jun 2020

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

Metrics by category

Vitality

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

96Exceptional · 21% of overall

Development activity

100Exceptional
How it's scored
36/36Push recency — last push 0 days ago
36/36Commit cadence — 52/52 weeks with commits
18/18Commit volume — 1,689 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 4 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year1,689
human_commit_share0.09
days_since_last_push0
active_weeks_last_year52
How it's scored
27/27Ships releases — 100 releases published
36/36Release recency — latest release 4 days ago
27/27Release cadence — a release every ~20.5 days
0/10OpenSSF Scorecard: Signed-Releases — Project has not signed or included provenance with any releases.
Inputs used
releases_count100
latest_release_tagnessie-0.108.8
releases_from_tagsno
days_since_latest_release4
mean_days_between_releases20.5

Community & Adoption

Does the project have users, downloads, attention, and a welcoming setup for contributors?

82Excellent · 17% of overall
How it's scored
51.6/60Stars — 1,510 stars
19.1/25Forks — 196 forks
7.9/15Watchers — 27 watchers
Inputs used
forks196
stars1,510
watchers27
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

85Excellent
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (Apache-2.0)
18/18CONTRIBUTING guide
13.5/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges11
has_contributingyes
has_issue_templateno
has_code_of_conductyes
readme_badge_servicesshields.io
has_pull_request_templateno

Sustainability & Governance

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

62Moderate · 23% of overall
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
8.6/22.5Commit distribution — top contributor authored 62% of commits
13.5/13.5Contributor breadth — 79 contributors
10/10OpenSSF Scorecard: Contributors — project has 12 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled79
top_contributor_share0.616
How it's scored
35.7/42Issue resolution — 85% of issues closed
27.9/30PR acceptance — 11,202/12,050 decided PRs merged
0/13Newcomer PR acceptance — 0/1 first-time contributors' PRs merged in 30d
0/15OpenSSF Scorecard: Code-Review — Found 0/6 approved changesets -- score normalized to 0
Inputs used
merged_prs11,202
open_issues140
closed_issues786
prs_merged_7d4
prs_decided_7d5
prs_merged_30d5
prs_decided_30d6
issue_closed_ratio0.849
closed_unmerged_prs848
first_time_authors_30d1
first_time_prs_merged_30d0
first_time_prs_decided_30d1
How it's scored
30/30Ownership backing — organization-owned
20/20Verified domain
12.8/25Owner reach — 60 followers of projectnessie
21.1/25Track record — 17 public repos, account ~6 yr old
Inputs used
followers60
owner_typeOrganization
is_verifiedyes
owner_loginprojectnessie
public_repos17
account_age_days2,286

Engineering Quality

Are baseline engineering and documentation practices in place?

74Good · 19% of overall
How it's scored
24/24CI workflows — 8 workflow(s)
24/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 24 out of 24 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigyes
has_linter_configno
has_precommit_configno
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage site — https://projectnessie.org
10/10Repository description
10/10Topics — 6 topics
10/10Wiki
Inputs used
topicsdata, spark, java, iceberg, aws-lambda, git
has_wikiyes
homepagehttps://projectnessie.org
docs_sitehttps://projectnessie.org
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

68Good · 16% of overall
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — no data
2.5/2.5CI-Tests — 24 out of 24 merged PRs checked by a CI test -- score normalized to 10
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 0/6 approved changesets -- score normalized to 0
2.5/2.5Contributors — project has 12 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
7.5/7.5Dependency-Update-Tool — update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
7.5/7.5Maintained — 30 commit(s) and 4 issue activity found in the last 90 days -- score normalized to 10
5/5Packaging — packaging workflow detected
1.5/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 3
0/5SAST — SAST tool is not run on all commits -- score normalized to 0
5/5Security-Policy — security policy file detected
0/7.5Signed-Releases — Project has not signed or included provenance with any releases.
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
6.8/7.5Vulnerabilities — 1 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated17
scorecard_versionv5.5.0
checks_inconclusive1
scorecard_aggregate6
Excluded from scoring (no data or not applicable): Branch-Protection. Remaining weights renormalized.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisories — no direct dependency carries a known advisory
0/25Indirect dependencies free of known advisories — transitive set not separable from development and test dependencies in this scope
0/40No advisories left outstanding — no advisory carries a publication date
Inputs used
sourceosv
advisories0
affected_packages0
assessed_packages17
unassessed_packages11
affected_by_severitynone
direct_affected_packages0
Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories, No advisories left outstanding. Remaining weights renormalized. Matched 17 resolved dependencies against OSV. 11 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list. This repository publishes no package the index resolves, so the repository dependency graph was assessed instead. That graph mixes development and test pins with shipped dependencies, so only the declared runtime dependencies are scored; transitive findings are reported as context and excluded from the score. Reachability is not analyzed.

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.

72Good · 4% of overall
How it's scored
45/45Agent instructions — AGENTS.md
0/15Machine-readable docs (llms.txt)
0/40Legible commit history — no data
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share—
agent_instruction_filesAGENTS.md
agent_instruction_max_bytes1,370
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.
How it's scored
18/18One-command bootstrap — site/Makefile
22/22Automated tests
0/11Lint / format config
11/11Static type checking — Java (statically typed)
10/10Reproducible environment — Dockerfile
0/10Demonstrated agent practice — no agent-authored commits among the last 100
8/8Automated maintenance — 83 of the last 100 commits are automated dependency updates
3/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 3
Inputs used
has_nixno
has_testsyes
lockfiles—
has_dockerfileyes
typed_languageyes
bootstrap_filessite/Makefile
has_devcontainerno
has_linter_configno
typecheck_configs—
agent_commit_share0
toolchain_manifestsapi/client-testextension/build.gradle.kts, api/client/build.gradle.kts, api/model/build.gradle.kts, bom/build.gradle.kts, build-logic/build.gradle.kts, build-tools-integration-tests/build.gradle, build-tools-integration-tests/pom.xml, build.gradle.kts, catalog/files/api/build.gradle.kts, catalog/files/impl/build.gradle.kts, catalog/format/iceberg-bench/build.gradle.kts, catalog/format/iceberg-fixturegen/build.gradle.kts, catalog/format/iceberg/build.gradle.kts, catalog/model/build.gradle.kts, catalog/secrets/api/build.gradle.kts, catalog/secrets/aws/build.gradle.kts, catalog/secrets/azure/build.gradle.kts, catalog/secrets/cache/build.gradle.kts, catalog/secrets/gcs/build.gradle.kts, catalog/secrets/smallrye/build.gradle.kts, catalog/secrets/vault/build.gradle.kts, catalog/service/common/build.gradle.kts, catalog/service/config/build.gradle.kts, catalog/service/impl/build.gradle.kts, catalog/service/rest/build.gradle.kts, catalog/service/transfer/build.gradle.kts, cli/cli/build.gradle.kts, cli/grammar/build.gradle.kts, compatibility/common/build.gradle.kts, compatibility/compatibility-tests/build.gradle.kts, compatibility/jersey/build.gradle.kts, events/api/build.gradle.kts, events/quarkus/build.gradle.kts, events/ri/build.gradle.kts, events/service/build.gradle.kts, events/spi/build.gradle.kts, gc/gc-base-tests/build.gradle.kts, gc/gc-base/build.gradle.kts, gc/gc-iceberg-files/build.gradle.kts, gc/gc-iceberg-inttest/build.gradle.kts, gc/gc-iceberg-mock/build.gradle.kts, gc/gc-iceberg/build.gradle.kts, gc/gc-repository-jdbc/build.gradle.kts, gc/gc-tool-inttest/build.gradle.kts, gc/gc-tool/build.gradle.kts, integrations/spark-extensions-base/build.gradle.kts, integrations/spark-extensions-basetests/build.gradle.kts, integrations/spark-extensions/build.gradle.kts, nessie-iceberg/build.gradle.kts, perftest/gatling/build.gradle.kts, perftest/simulations/build.gradle.kts, servers/jax-rs-testextension/build.gradle.kts, servers/jax-rs-tests/build.gradle.kts, servers/quarkus-authn/build.gradle.kts, servers/quarkus-authz/build.gradle.kts, servers/quarkus-catalog/build.gradle.kts, servers/quarkus-common/build.gradle.kts, servers/quarkus-config/build.gradle.kts, servers/quarkus-distcache/build.gradle.kts, servers/quarkus-ext/deployment/build.gradle.kts, servers/quarkus-ext/runtime/build.gradle.kts, servers/quarkus-rest/build.gradle.kts, servers/quarkus-secrets/build.gradle.kts, servers/quarkus-server/build.gradle.kts, servers/quarkus-tests/build.gradle.kts, servers/rest-common/build.gradle.kts, servers/rest-services/build.gradle.kts, servers/services-bench/build.gradle.kts, servers/services-config/build.gradle.kts, servers/services/build.gradle.kts, servers/store-proto/build.gradle.kts, servers/store/build.gradle.kts, site/build.gradle.kts, tasks/api/build.gradle.kts, tasks/service/async/build.gradle.kts, tasks/service/impl/build.gradle.kts, testing/container-spec-helper/build.gradle.kts, testing/floci-az-container/build.gradle.kts, testing/floci-gcp-container/build.gradle.kts, testing/floci-s3-container/build.gradle.kts, testing/keycloak-container/build.gradle.kts, testing/multi-env-test-engine/build.gradle.kts, testing/nessie-container/build.gradle.kts, testing/object-storage-mock/build.gradle.kts, testing/trino-container/build.gradle.kts, tools/aggregated-license-report/build.gradle.kts, tools/content-generator/build.gradle.kts, tools/doc-generator/annotations/build.gradle.kts, tools/doc-generator/doclet/build.gradle.kts, tools/doc-generator/site-gen/build.gradle.kts, tools/immutables-std/build.gradle.kts, tools/immutables/build.gradle.kts, tools/network/build.gradle.kts, tools/notice/build.gradle.kts, tools/protobuf-relocated/build.gradle.kts, tools/server-admin/build.gradle.kts, tools/storage/uri/build.gradle.kts, versioned/combined-cs/build.gradle.kts, versioned/spi/build.gradle.kts, versioned/storage/batching/build.gradle.kts, versioned/storage/bigtable-tests/build.gradle.kts, versioned/storage/bigtable/build.gradle.kts, versioned/storage/cache/build.gradle.kts, versioned/storage/cassandra-tests/build.gradle.kts, versioned/storage/cassandra/build.gradle.kts, versioned/storage/cassandra2-tests/build.gradle.kts, versioned/storage/cassandra2/build.gradle.kts, versioned/storage/cleanup/build.gradle.kts, versioned/storage/common-proto/build.gradle.kts, versioned/storage/common-serialize/build.gradle.kts, versioned/storage/common-tests/build.gradle.kts, versioned/storage/common/build.gradle.kts, versioned/storage/dynamodb-tests/build.gradle.kts, versioned/storage/dynamodb/build.gradle.kts, versioned/storage/dynamodb2-tests/build.gradle.kts, versioned/storage/dynamodb2/build.gradle.kts, versioned/storage/inmemory-tests/build.gradle.kts, versioned/storage/inmemory/build.gradle.kts, versioned/storage/jdbc-tests/build.gradle.kts, versioned/storage/jdbc/build.gradle.kts, versioned/storage/jdbc2-tests/build.gradle.kts, versioned/storage/jdbc2/build.gradle.kts, versioned/storage/mongodb-tests/build.gradle.kts, versioned/storage/mongodb/build.gradle.kts, versioned/storage/mongodb2-tests/build.gradle.kts, versioned/storage/mongodb2/build.gradle.kts, versioned/storage/rocksdb-tests/build.gradle.kts, versioned/storage/rocksdb/build.gradle.kts, versioned/storage/store/build.gradle.kts, versioned/storage/testextension/build.gradle.kts, versioned/tests/build.gradle.kts, versioned/transfer-proto/build.gradle.kts, versioned/transfer-related/build.gradle.kts, versioned/transfer/build.gradle.kts
dependency_bot_commit_share0.83
How it's scored
45/45Type-checkable code — Java (statically typed)
54.8/55Manageable file sizes — 7/2,563 source files over 60KB
Inputs used
primary_languageJava
largest_source_bytes116,539
source_files_sampled2,563
oversized_source_files7
How it's scored
40/40API schema (OpenAPI/GraphQL/proto) — api/model/src/main/resources/META-INF/openapi.yaml, servers/store-proto/src/main/proto/org/projectnessie/server/store/proto/table.proto, versioned/storage/common-proto/src/main/proto/org/projectnessie/versioned/storage/common/proto/storage.proto, versioned/transfer-proto/src/main/proto/org/projectnessie/versioned/transfer/serialize/transfer.proto
0/20MCP server
0/40Runnable examples
Inputs used
example_dirs—
has_mcp_signalno
api_schema_filesapi/model/src/main/resources/META-INF/openapi.yaml, servers/store-proto/src/main/proto/org/projectnessie/server/store/proto/table.proto, versioned/storage/common-proto/src/main/proto/org/projectnessie/versioned/storage/common/proto/storage.proto, versioned/transfer-proto/src/main/proto/org/projectnessie/versioned/transfer/serialize/transfer.proto
interfaces_expected_ofnetwork-service

Key facts

1,510GitHub stars
79contributors
1,689commits, last 12 months
0days since last push
100releases
1bus factor
140open issues
Maven, PyPIpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • Could not fetch maven package 'org.projectnessie.nessie.build-tool-integration-tests:maven-integ-test' from its registry

More detail

Star and fork history 0 ★ / 196 ⇿
0Stars
196Forks
99Releases

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.

0408012016020019552020-102023-092026-08
Major 0Minor 0Patch 0

Each point covers 6 days.

OpenSSF Scorecard 6.0 / 10
6.0aggregate

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 · 2026-09-13 16:45 UTC

10Binary-Artifactsno binaries found in the repo
n/aBranch-Protectioninternal 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
10CI-Tests24 out of 24 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 0/6 approved changesets -- score normalized to 0
10Contributorsproject has 12 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 4 issue activity found in the last 90 days -- score normalized to 10
10Packagingpackaging workflow detected
3Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 3
0SASTSAST tool is not run on all commits -- score normalized to 0
10Security-Policysecurity policy file detected
0Signed-ReleasesProject has not signed or included provenance with any releases.
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
9Vulnerabilities1 existing vulnerabilities detected
Direct dependencies 10
RegistryPackageVersion constraintManifest
Mavenorg.projectnessie.nessie:nessie-bom${nessie.version}build-tools-integration-tests/pom.xml
Mavenorg.junit:junit-bom6.1.3build-tools-integration-tests/pom.xml
Mavenorg.projectnessie.nessie:nessie-jaxrs-testextension—build-tools-integration-tests/pom.xml
Mavenorg.projectnessie.nessie:nessie-versioned-storage-cache—build-tools-integration-tests/pom.xml
Mavenorg.projectnessie.nessie:nessie-versioned-storage-common-serialize—build-tools-integration-tests/pom.xml
Mavenorg.projectnessie.nessie:nessie-versioned-storage-inmemory-tests—build-tools-integration-tests/pom.xml
Mavenorg.projectnessie.nessie:nessie-versioned-storage-mongodb2—build-tools-integration-tests/pom.xml
Mavenorg.projectnessie.nessie:nessie-versioned-storage-rocksdb-tests—build-tools-integration-tests/pom.xml
Mavenorg.projectnessie.nessie:nessie-versioned-storage-store—build-tools-integration-tests/pom.xml
Mavenorg.projectnessie.nessie:nessie-versioned-storage-testextension—build-tools-integration-tests/pom.xml
All dependencies 28

Full resolved dependency set from the GitHub dependency graph: 10 direct and 18 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
Mavenorg.junit:junit-bom6.1.3direct
Mavenorg.projectnessie.nessie:nessie-bom0.108.8direct
Mavenorg.projectnessie.nessie:nessie-jaxrs-testextension—direct
Mavenorg.projectnessie.nessie:nessie-versioned-storage-cache—direct
Mavenorg.projectnessie.nessie:nessie-versioned-storage-common-serialize—direct
Mavenorg.projectnessie.nessie:nessie-versioned-storage-inmemory-tests—direct
Mavenorg.projectnessie.nessie:nessie-versioned-storage-mongodb2—direct
Mavenorg.projectnessie.nessie:nessie-versioned-storage-rocksdb-tests—direct
Mavenorg.projectnessie.nessie:nessie-versioned-storage-store—direct
Mavenorg.projectnessie.nessie:nessie-versioned-storage-testextension—direct
Mavenorg.apache.maven.plugins:maven-compiler-plugin3.16.0indirect
Mavenorg.apache.maven.plugins:maven-surefire-plugin3.6.0indirect
Mavenorg.apache.maven.resolver:maven-resolver-supplier1.9.27indirect
Mavenorg.assertj:assertj-core3.27.7indirect
Mavenorg.junit.jupiter:junit-jupiter-api—indirect
Mavenorg.junit.jupiter:junit-jupiter-engine—indirect
Mavenorg.junit.jupiter:junit-jupiter-params—indirect
PyPImkdocs1.6.1indirect
PyPImkdocs-awesome-pages-plugin2.10.1indirect
PyPImkdocs-include-markdown-plugin7.3.0indirect
PyPImkdocs-macros-plugin1.5.0indirect
PyPImkdocs-material9.7.7indirect
PyPImkdocs-material-extensions1.3.1indirect
PyPImkdocs-minify-plugin0.8.0indirect
PyPImkdocs-monorepo-plugin1.1.2indirect
PyPImkdocs-redirects1.2.3indirect
PyPImkdocs-rss-plugin1.19.0indirect
PyPIpymdown-extensions11.0.2indirect
Dependency advisories 0

This repository publishes no package the index resolves, so its own dependency graph was assessed — 17 packages, which also include development and test pins that never ship: 0 carry known advisories, of which 0 are direct. 11 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list.

No known advisories affect the assessed dependencies.

An advisory means the version recorded in the dependency graph falls inside an advisory’s affected range. Reachability is not analysed, and the graph includes development and test pins — a finding may concern tooling rather than shipped software.

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.

The message is kept through sign-in.

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.