{"note":"Deterministic layer only. No model calls were made and no source content left this machine.","layer":"deterministic","coverage":{"statement":"A repository answers roughly three and a half of seven dimensions. The rest are reported as not assessable, with the questions a human would ask instead.","total_dimensions":7,"assessable_dimensions":6},"degraded":"apache/superset is about 1,162 MB, over the 500 MB free-tier limit, so only the most recent 20,000 commits were read. Signals needing full history are reported as inconclusive rather than clean. Full depth is available on the Report tier.","dimensions":[{"id":"01","band":"adequate","name":"Architecture & Codebase — including AI provenance","coverage":"full","findings":[{"id":"01.6","band":"adequate","layer":"deterministic","title":"superset/security/manager.py is 6,398 lines, 60× this codebase's median file","signal":"oversized_modules","weight":"corroborating","evidence":[{"ref":"line-count","kind":"path","path":"superset/security/manager.py","detail":"6,398 lines (60× median)","line_end":6398,"line_start":1},{"ref":"line-count","kind":"path","path":"superset/models/helpers.py","detail":"5,804 lines (55× median)","line_end":5804,"line_start":1},{"ref":"line-count","kind":"path","path":"superset/mcp_service/chart/schemas.py","detail":"4,728 lines (45× median)","line_end":4728,"line_start":1},{"ref":"line-count","kind":"path","path":"superset/config.py","detail":"3,565 lines (33× median)","line_end":3565,"line_start":1},{"ref":"line-count","kind":"path","path":"superset/dashboards/api.py","detail":"3,530 lines (33× median)","line_end":3530,"line_start":1}],"observed":{"largest":6398,"threshold":1050,"files_over":67,"median_lines":105},"dimension":"01","rationale":"The median source file here is 105 lines. 67 files exceed 1,050 lines, the largest being 6,398. Size is not a defect on its own — some problems genuinely live in one place — but these are where merge conflicts, review fatigue and single-owner knowledge concentrate, and they are the first thing that slows an inheriting engineer down."}],"signals_run":11,"conclusive_signals":8,"what_a_person_adds":[{"id":"01.38","kind":"H+","where":"The team","measured":"The tree carries design documentation (docs/developer_docs/extensions/architecture.md and 4 more).","question":"Does it match what the team believes today? Ask them to walk through it against the code."},{"id":"01.35","kind":"H+","where":"The team and the submodule owners","measured":"The repository pulls code in through git submodules (.gitmodules).","question":"A buyer receives pointers, not that code. Can every submodule be fetched without the team's credentials, and who owns each one?"},{"id":"01.39","kind":"H","where":"Your architects, with the product roadmap","question":"Is the architecture right for the next three years of the product?"},{"id":"01.40","kind":"H","where":"The team's reasoning at the time","question":"Were the home-grown components reasonable choices when they were made, and are they now?"}]},{"id":"02","band":"adequate","name":"Engineering Process & SDLC Maturity","coverage":"high","findings":[{"id":"02.16","band":"adequate","layer":"deterministic","title":"Tests are retried until they pass","signal":"flaky_test_markers","weight":"corroborating","evidence":[{"ref":"superset-frontend/playwright.config.ts","kind":"path","path":"superset-frontend/playwright.config.ts","detail":"test retry","line_end":48,"line_start":48}],"observed":{"test_retries":0,"suite_retries":1},"dimension":"02","rationale":"The suite is configured to retry failing tests (superset-frontend/playwright.config.ts). A retry turns a flaky test green without saying why it failed, so a green build means the tests passed eventually. Ask how many retries a typical run needs, and which tests need them."}],"signals_run":15,"conclusive_signals":13,"what_a_person_adds":[{"id":"02.32","kind":"H","where":"The code host's pull request data","question":"Is review real or a rubber stamp? Comment depth and time to approve need the pull request history."},{"id":"02.38","kind":"H","where":"The issue tracker: backlog, sprint history, estimate accuracy","question":"Is delivery planned and measured, or heroic?"},{"id":"02.37","kind":"H","where":"Tickets, chat and postmortems","question":"How are incidents run, reviewed and learned from?"}]},{"id":"03","band":"strong","name":"Organization & Key-Person Risk","coverage":"partial","findings":[],"signals_run":9,"conclusive_signals":5,"what_a_person_adds":[{"id":"03.29","kind":"H+","where":"The deal terms","measured":"1,736 people have committed here.","question":"Which of them are you acquiring, and which are you replacing?"},{"id":"03.28","kind":"H","where":"The team; review history only suggests candidates","question":"Who mentors whom, and would that survive a departure?"},{"id":"03.30","kind":"H","where":"Recruiting data and the org chart","question":"Can the team grow, and who stands behind the top three contributors?"},{"id":"03.31","kind":"H","where":"HR data","question":"Is the seniority mix sound, and will pay survive your salary bands?"},{"id":"03.14","kind":"H","where":"Interviews and on-call history","question":"Is the pace sustainable? Commit times cannot say: git keeps no reliable local time."},{"id":"03.32","kind":"H","where":"Interviews","question":"Does the team want to stay after close?"},{"id":"03.33","kind":"H","where":"Time with the team","question":"How are decisions made and disagreements resolved?"}]},{"id":"04","band":"adequate","name":"Product & Engineering Maturity","coverage":"minimal","findings":[{"id":"04.3","band":"adequate","layer":"deterministic","title":"140 direct dependencies in a single manifest","signal":"dependency_sprawl","weight":"corroborating","evidence":[{"ref":"direct-dependencies","kind":"path","path":"superset-frontend/package.json","detail":"140 declared"},{"ref":"direct-dependencies","kind":"path","path":"superset-frontend/packages/superset-ui-core/package.json","detail":"45 declared"},{"ref":"direct-dependencies","kind":"path","path":"docs/package.json","detail":"39 declared"},{"ref":"direct-dependencies","kind":"path","path":"superset-frontend/plugins/preset-chart-deckgl/package.json","detail":"30 declared"}],"observed":{},"dimension":"04","rationale":"superset-frontend/package.json declares 140 direct dependencies. Each one is a maintenance obligation, a supply-chain surface and a potential licence question that transfers with the asset. The count says nothing about whether any given dependency was a good choice; it says how many such choices a buyer inherits."},{"id":"04.36","band":"adequate","layer":"deterministic","title":"39 feature flags have been live for over a year","signal":"flags_accumulating","weight":"corroborating","evidence":[{"ref":"tests/utils_tests.py","kind":"path","path":"tests/utils_tests.py","detail":"flag FOO since Jan 2019"},{"ref":"superset/models/core.py","kind":"path","path":"superset/models/core.py","detail":"flag TAGGING_SYSTEM since Jul 2019"},{"ref":"superset/db_engine_specs/presto.py","kind":"path","path":"superset/db_engine_specs/presto.py","detail":"flag PRESTO_EXPAND_DATA since Aug 2019"},{"ref":"superset/views/core.py","kind":"path","path":"superset/views/core.py","detail":"flag SQLLAB_BACKEND_PERSISTENCE since Nov 2019"},{"ref":"tests/thumbnails_tests.py","kind":"path","path":"tests/thumbnails_tests.py","detail":"flag THUMBNAILS since Apr 2020"}],"observed":{"live":50,"retired":28,"flags_seen":78,"stale_over_a_year":39},"dimension":"04","rationale":"78 feature flags appear in the history. 28 were removed; 39 are still in the code more than a year after they were added, the oldest since Jan 2019. A flag that stays is a permanent branch, and each one doubles what has to be tested. Ask which are still switched, and who owns retiring them."},{"id":"04.38","band":"adequate","layer":"deterministic","title":"7 files still carry code deprecated more than two years ago","signal":"deprecations_lingering","weight":"corroborating","evidence":[{"ref":"superset/initialization/__init__.py","kind":"path","path":"superset/initialization/__init__.py","detail":"deprecated since Jun 2021"},{"ref":"superset/views/core.py","kind":"path","path":"superset/views/core.py","detail":"deprecated since Nov 2022"},{"ref":"superset/db_engine_specs/base.py","kind":"path","path":"superset/db_engine_specs/base.py","detail":"deprecated since Apr 2023"},{"ref":"superset/views/datasource/views.py","kind":"path","path":"superset/views/datasource/views.py","detail":"deprecated since Apr 2023"},{"ref":"superset-frontend/packages/superset-ui-core/src/utils/featureFlags.ts","kind":"path","path":"superset-frontend/packages/superset-ui-core/src/utils/featureFlags.ts","detail":"deprecated since Jan 2024"}],"observed":{"older_than_two_years":7,"files_with_deprecations":38},"dimension":"04","rationale":"7 files were marked deprecated over two years ago and still are, the oldest since Jun 2021. A deprecation is a promise to remove. Ask what still depends on these, and whether removing them is scheduled."}],"signals_run":16,"conclusive_signals":16,"what_a_person_adds":[{"id":"04.11","kind":"H+","where":"The team","measured":"3,500 commits landed in the last year, against 1,342 the year before (+161%).","question":"What drove it: new people, a deadline, or code produced faster than before?"},{"id":"04.32","kind":"H","where":"The data room and the team's record of estimates","question":"Can this team deliver the stated roadmap on the stated timeline?"},{"id":"04.31","kind":"H","where":"Budget and roadmap decisions","question":"Does leadership know about the debt, and is time budgeted to repay it?"},{"id":"04.33","kind":"H","where":"Revenue, customer and churn data","question":"Is the engineering shape consistent with the commercial story?"}]},{"id":"05","band":"adequate","name":"Security & Reliability Posture","coverage":"partial","findings":[{"id":"05.25","band":"adequate","layer":"deterministic","title":"1 environment file is committed","signal":"secrets_management_pattern","weight":"corroborating","evidence":[{"ref":"docker/.env","kind":"path","path":"docker/.env","detail":"committed environment file"}],"observed":{"env_files":1},"dimension":"05","rationale":"docker/.env is tracked in git. Environment files are where credentials usually live, and committing one usually means nobody decided how secrets reach the running application. Whatever is in it is in the history for good. Check 05.1 says whether it holds anything credential-shaped."},{"id":"05.27","band":"adequate","layer":"deterministic","title":"The build runs third-party code it does not pin","signal":"supply_chain_pinning","weight":"corroborating","evidence":[{"ref":".github/workflows/pre-commit.yml","kind":"path","path":".github/workflows/pre-commit.yml","detail":"download piped into a shell","line_end":63,"line_start":63}],"observed":{"action_refs":178,"pipe_to_shell":2,"unpinned_third_party":0},"dimension":"05","rationale":"2 steps pipe a download straight into a shell. Tags have been moved to malicious commits in real supply-chain attacks, and a piped script is whatever the server returns that minute. Pinning to a commit is the fix, and it is small."},{"id":"05.17","band":"adequate","layer":"deterministic","title":"99 of 400 migrations cannot be rolled back","signal":"migration_reversibility","weight":"corroborating","evidence":[{"ref":"superset/migrations/versions/2016-03-13_21-30_18e88e1cc004_making_audit_nullable.py","kind":"path","path":"superset/migrations/versions/2016-03-13_21-30_18e88e1cc004_making_audit_nullable.py","detail":"migration with no way back","line_end":104,"line_start":104},{"ref":"superset/migrations/versions/2016-03-22_23-25_d2424a248d63_.py","kind":"path","path":"superset/migrations/versions/2016-03-22_23-25_d2424a248d63_.py","detail":"migration with no way back","line_end":34,"line_start":34},{"ref":"superset/migrations/versions/2016-03-26_15-09_fee7b758c130_.py","kind":"path","path":"superset/migrations/versions/2016-03-26_15-09_fee7b758c130_.py","detail":"migration with no way back","line_end":34,"line_start":34}],"observed":{"share":0.247,"migrations":400,"irreversible":99},"dimension":"05","rationale":"99 schema migrations (25%) have no working way back: an empty `downgrade`, a `down` that does nothing, or a data migration with no reverse. A bad deploy that includes one is recovered from a backup, not reverted. Ask when a restore was last rehearsed."},{"id":"05.22","band":"adequate","layer":"deterministic","title":"3 deserialisers that can run code","signal":"unsafe_deserialization","weight":"corroborating","evidence":[{"ref":"superset/key_value/types.py","kind":"path","path":"superset/key_value/types.py","detail":"code-executing deserialiser","line_end":93,"line_start":93},{"ref":"superset/migrations/versions/2022-06-27_14-59_7fb8bca906d2_permalink_rename_filterstate.py","kind":"path","path":"superset/migrations/versions/2022-06-27_14-59_7fb8bca906d2_permalink_rename_filterstate.py","detail":"code-executing deserialiser","line_end":58,"line_start":58},{"ref":"superset/migrations/versions/2022-06-27_14-59_7fb8bca906d2_permalink_rename_filterstate.py","kind":"path","path":"superset/migrations/versions/2022-06-27_14-59_7fb8bca906d2_permalink_rename_filterstate.py","detail":"code-executing deserialiser","line_end":78,"line_start":78}],"observed":{"sites":3},"dimension":"05","rationale":"3 places read data with a deserialiser that executes what it reads (pickle, `yaml.load` without a safe loader, object streams, `unserialize`). That is safe on data the system wrote itself and remote code execution on anything else. Ask where each one's input comes from."},{"id":"05.26","band":"adequate","layer":"deterministic","title":"3 locked dependencies have published vulnerabilities, 2 high or critical","signal":"known_vulnerabilities","weight":"corroborating","evidence":[{"ref":"superset-frontend/package-lock.json","kind":"path","path":"superset-frontend/package-lock.json","detail":"image-size 0.7.5: GHSA-w3rx-r6r6-pgpr (high), fixed in 2.0.3"},{"ref":"superset-frontend/package-lock.json","kind":"path","path":"superset-frontend/package-lock.json","detail":"js-yaml 4.3.1: GHSA-2883-xcg3-v3hh (high), fixed in 4.3.2"},{"ref":"superset-frontend/package-lock.json","kind":"path","path":"superset-frontend/package-lock.json","detail":"fflate 0.7.4: GHSA-px8p-9vwx-vf98 (moderate), fixed in 0.7.5"}],"observed":{"advisories":3,"dependencies":1334,"high_or_critical":2,"vulnerable_packages":3,"set_aside_not_imported":0,"high_or_critical_shipping":2},"dimension":"05","rationale":"3 of 1,334 locked dependencies match 3 published advisories in OSV, 2 of them rated high or critical. A lockfile says which version is installed, not whether the flawed code is reachable from this product, so each needs a look. Most are fixed by an upgrade, and the advisory names the version.","unproven":true},{"id":"05.48","band":"adequate","layer":"deterministic","title":"7 places insert HTML from a variable without sanitising it","signal":"unsafe_html","weight":"corroborating","evidence":[{"ref":"superset-frontend/plugins/preset-chart-deckgl/src/utilities/HandlebarsRenderer.tsx","kind":"path","path":"superset-frontend/plugins/preset-chart-deckgl/src/utilities/HandlebarsRenderer.tsx","detail":"HTML from a variable","line_end":82,"line_start":82},{"ref":"superset-frontend/src/dashboard/components/gridComponents/Chart/Chart.tsx","kind":"path","path":"superset-frontend/src/dashboard/components/gridComponents/Chart/Chart.tsx","detail":"HTML from a variable","line_end":806,"line_start":806},{"ref":"superset-frontend/src/dashboard/util/injectCustomCss.ts","kind":"path","path":"superset-frontend/src/dashboard/util/injectCustomCss.ts","detail":"HTML from a variable","line_end":45,"line_start":45}],"observed":{"sites":7},"dimension":"05","rationale":"7 places set HTML from a value that is neither a literal nor passed through a sanitiser. Where the value can come from a user, that is stored cross-site scripting, and it is the first thing a buyer's security review looks for in a frontend."},{"id":"05.49","band":"adequate","layer":"deterministic","title":"The production build publishes source maps","signal":"source_maps_shipped","weight":"corroborating","evidence":[{"ref":"superset-embedded-sdk/webpack.config.js","kind":"path","path":"superset-embedded-sdk/webpack.config.js","detail":"source maps in a production build","line_end":34,"line_start":34}],"observed":{"sites":1},"dimension":"05","rationale":"The build configuration emits source maps for production, so the original source, with its comments and structure, is downloadable by every visitor. Upload them to an error tracker and keep them off the public server instead."},{"id":"05.9","band":"adequate","layer":"deterministic","title":"2 vendored components with no licence","signal":"license_vendored_unlicensed","weight":"corroborating","evidence":[{"ref":"superset-frontend/plugins/plugin-chart-calendar/src/vendor/cal-heatmap.ts","kind":"path","path":"superset-frontend/plugins/plugin-chart-calendar/src/vendor/cal-heatmap.ts","detail":"1 tracked files, no licence file"},{"ref":"superset-frontend/plugins/plugin-chart-parallel-coordinates/src/vendor/parcoords","kind":"path","path":"superset-frontend/plugins/plugin-chart-parallel-coordinates/src/vendor/parcoords","detail":"2 tracked files, no licence file"}],"observed":{"unlicensed":["superset-frontend/plugins/plugin-chart-calendar/src/vendor/cal-heatmap.ts","superset-frontend/plugins/plugin-chart-parallel-coordinates/src/vendor/parcoords"],"total_components":2},"dimension":"05","rationale":"Third-party code is committed into this repository without any statement of the terms it arrived under. Unknown terms are harder to deal with than inconvenient ones: an awkward licence can be complied with, an absent one cannot. Each of these needs its origin established before the code changes hands."}],"signals_run":28,"conclusive_signals":24,"what_a_person_adds":[{"id":"05.43","kind":"H+","where":"The security owner","measured":"No threat model is in the tree of what looks like a running service.","question":"Does one exist elsewhere, and who owns it?"},{"id":"05.41","kind":"H","where":"Ticketing and chat","question":"What has actually broken, how often, and how badly?"},{"id":"05.42","kind":"H","where":"Reports in the data room","question":"What did external testing find, and was it fixed?"},{"id":"05.44","kind":"H","where":"Audit reports; policy files in the tree are not evidence","question":"What is the SOC 2, ISO 27001 or GDPR status, and where is the evidence?"}]},{"id":"06","band":"adequate","name":"Observability & Operations","coverage":"partial","findings":[{"id":"06.9","band":"adequate","layer":"deterministic","title":"No error reporter is wired in","signal":"error_reporting","weight":"corroborating","evidence":[{"ref":"error reporting","kind":"metric","detail":"no error reporter initialised"}],"observed":{"installed":[],"initialised":0,"config_files":0},"dimension":"06","rationale":"Nothing in the service initialises an error reporter (Sentry, Rollbar, Bugsnag, Honeybadger or an APM agent). An exception in production reaches a person only if someone is reading the logs, which usually means a customer reports it first."},{"id":"06.18","band":"adequate","layer":"deterministic","title":"1 of 3 deployed images carry no version, or `latest`","signal":"deployed_image_floats","weight":"corroborating","evidence":[{"ref":"docker-compose-image-tag.yml","kind":"path","path":"docker-compose-image-tag.yml","detail":"image without a version","line_end":120,"line_start":120}],"observed":{"images":3,"floating":1},"dimension":"06","rationale":"1 images in the deployment configuration are named without a version or as `latest`. A redeploy can change the software without a commit, a rollback has nothing to roll back to, and nobody can say from the repository what is running."},{"id":"06.14","band":"adequate","layer":"deterministic","title":"Readiness and liveness probes are identical in 2 of 2 workloads","signal":"probes_identical","weight":"corroborating","evidence":[{"ref":"helm/superset/values.yaml","kind":"path","path":"helm/superset/values.yaml","detail":"same probe endpoint twice"}],"observed":{"identical":2,"workloads_with_both":2},"dimension":"06","rationale":"Both probes call the same endpoint. When a dependency slows down, the liveness probe fails with the readiness probe, so the platform restarts pods that only needed taking out of rotation, and a partial outage becomes a full one. Liveness should ask whether the process is alive; readiness whether it can serve."}],"signals_run":15,"conclusive_signals":12,"what_a_person_adds":[{"id":"06.19","kind":"H+","where":"The operations team","measured":"Nothing in the tree backs up or restores data.","question":"How is data backed up, and has a restore ever been rehearsed?"},{"id":"06.10","kind":"H+","where":"The alerting tool and the on-call rota","measured":"No alert rule is defined in the repository.","question":"Where are alerts defined, who receives them, and when did one last fire?"},{"id":"06.29","kind":"H","where":"Pager history and dashboard logs","question":"Are the dashboards opened, the alerts acknowledged and the pages answered?"},{"id":"06.30","kind":"H","where":"Production metrics","question":"Are the service-level objectives actually met?"},{"id":"06.31","kind":"H","where":"Pager exports and interviews","question":"Who carries the pager, and how often does it go off?"},{"id":"06.32","kind":"H","where":"Cloud billing and capacity plans","question":"What does it cost to run, and how much headroom is there?"}]},{"id":"07","band":"not assessable","name":"Fit with the Acquirer","coverage":"none","findings":[],"signals_run":0,"conclusive_signals":0,"what_a_person_adds":[{"id":"07.1","kind":"H+","question":"This is primarily a TypeScript codebase, with Python alongside (38% of source files). Does your engineering organisation already run TypeScript in production, or would this be the first?"},{"id":"07.10","kind":"H+","question":"The bulk of this system sits in superset/, superset-frontend/, superset-websocket/. Which of your existing systems would each of those have to absorb or replace?"},{"id":"07.2","kind":"H+","question":"The repository carries deployment configuration (Dockerfile and 43 more). Does that match your deployment and on-call model, or does it need rehosting first?"},{"id":null,"kind":"H+","question":"What is your tolerance for the findings above remaining unaddressed for the first two quarters after close, given everything else that will compete for this team's time?"},{"id":"07.11","kind":"H","where":"Your architecture","question":"Which of these systems duplicate yours, and which get retired?"},{"id":"07.12","kind":"H","where":"The engagement","question":"What will integration cost, and in what order?"},{"id":"07.13","kind":"H","where":"Your org design","question":"Where does the team land in your organisation, and who reports to whom?"},{"id":"07.14","kind":"H","where":"Deal terms","question":"Are there earn-outs, retention packages or contractor IP to assign?"},{"id":"07.15","kind":"H","where":"Customer contracts","question":"Do customer contracts limit hosting, regions or vendors?"}],"not_assessable_reason":"structurally not assessable from a repository"}],"repository":{"loc":1760151,"head":"be0631858c98a71a5370fce4a270e76bfd4de340","slug":"apache/superset","tags":null,"stars":74915,"shallow":true,"span_days":3790.0,"last_commit":"2026-09-25T17:23:14+00:00","commits_read":22274,"first_commit":null,"truncated_at":20000,"window_start":"2016-05-10T16:29:29+00:00","tracked_files":11006,"history_complete":false},"generated_at":"2026-09-25T17:39:15.642486+00:00","generated_by":"borehole 0.6.1","rejection_log":[{"reason":"change is spread across the codebase rather than pooling in a few files, in the most recent 22,274 commits (10 May 2016 to 25 Sep 2026)","signal":"hotspot_concentration","observed":{"files":31419,"top5_share":0.03,"history_read":"the most recent 22,274 commits (10 May 2016 to 25 Sep 2026)"},"dimension":"04","conclusive":true},{"reason":"debt markers are sparse","signal":"debt_markers","observed":{"markers":730,"per_kloc":0.42,"lines_read":1751402},"dimension":"04","conclusive":true},{"reason":"test effort kept pace with code written, in the most recent 22,274 commits (10 May 2016 to 25 Sep 2026)","signal":"test_growth","observed":{"history_read":"the most recent 22,274 commits (10 May 2016 to 25 Sep 2026)","late_test_per_code":0.238,"early_test_per_code":0.305},"dimension":"04","conclusive":true},{"reason":"rework is not rising against new work, in the most recent 22,274 commits (10 May 2016 to 25 Sep 2026)","signal":"churn_trend","observed":{"history_read":"the most recent 22,274 commits (10 May 2016 to 25 Sep 2026)","late_delete_per_insert":0.749,"early_delete_per_insert":0.476,"single_commit_deletions_set_aside":[]},"dimension":"04","conclusive":true},{"reason":"every pinned runtime is still supported","signal":"eol_runtime","observed":{"pinned":["node 24"],"eol_as_of":"2026-09-24"},"dimension":"04","conclusive":true},{"reason":"fixes usually come with a 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It counts what the repository declares. Undeclared AI authorship is invisible here, and a single rebase removes the trailers this rests on. Absence of a declaration is absence of disclosure, not absence of AI authorship.","surviving_total_lines":null},"band":"adequate","reliance":"An automated reading of a repository's code and its history up to one commit, with public advisory records. It may be wrong, it is not legal, financial, investment or security advice, and it does not replace diligence by a qualified person. It is provided for information: nobody may rely on it (Borehole's terms, section 3).","published_under_todays_rules":["1 finding rated significant by a check that has not yet held up in Borehole's calibration is now worth checking first."]}