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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.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."}],"signals_run":11,"conclusive_signals":10,"what_a_person_adds":[{"id":"01.38","kind":"H+","where":"The team","measured":"The tree carries design documentation (ARCHITECTURE.md).","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. 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The headline bus factor does not show this: a team can look well spread in aggregate and still have subsystems that stop moving the day one person stops working on them. For these areas, ask who else can change them today.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."}],"signals_run":10,"conclusive_signals":10,"what_a_person_adds":[{"id":"03.29","kind":"H+","where":"The deal terms","measured":"979 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":"strong","name":"Product & Engineering Maturity","coverage":"minimal","findings":[{"id":"04.38","band":"adequate","layer":"deterministic","title":"22 files still carry code deprecated more than two years ago","signal":"deprecations_lingering","weight":"corroborating","context":true,"evidence":[{"ref":"presto-hive/src/main/java/com/facebook/presto/hive/HiveClientConfig.java","kind":"path","path":"presto-hive/src/main/java/com/facebook/presto/hive/HiveClientConfig.java","detail":"deprecated since Sep 2015"},{"ref":"presto-client/src/main/java/com/facebook/presto/client/ClientTypeSignature.java","kind":"path","path":"presto-client/src/main/java/com/facebook/presto/client/ClientTypeSignature.java","detail":"deprecated since Jan 2016"},{"ref":"presto-spi/src/main/java/com/facebook/presto/spi/FixedSplitSource.java","kind":"path","path":"presto-spi/src/main/java/com/facebook/presto/spi/FixedSplitSource.java","detail":"deprecated since Jul 2016"},{"ref":"presto-bytecode/src/main/java/com/facebook/presto/bytecode/DynamicClassLoader.java","kind":"path","path":"presto-bytecode/src/main/java/com/facebook/presto/bytecode/DynamicClassLoader.java","detail":"deprecated since Sep 2016"},{"ref":"presto-orc/src/main/java/com/facebook/presto/orc/ChunkedSliceOutput.java","kind":"path","path":"presto-orc/src/main/java/com/facebook/presto/orc/ChunkedSliceOutput.java","detail":"deprecated since Jul 2017"}],"observed":{"older_than_two_years":22,"files_with_deprecations":174},"dimension":"04","rationale":"22 files were marked deprecated over two years ago and still are, the oldest since Sep 2015. A deprecation is a promise to remove. Ask what still depends on these, and whether removing them is scheduled.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"04.62","band":"adequate","layer":"deterministic","title":"Releases are cut from another branch than the one surveyed","signal":"release_branch","weight":"corroborating","context":true,"evidence":[{"ref":"01f660ffe","kind":"commit","detail":"tag 0.300"}],"observed":{"elsewhere":138,"on_branch":222,"tags_in_window":360,"direction_known":true,"later_on_branch":0},"dimension":"04","rationale":"The newest release, 0.300, is not on the branch this survey read; the newest release on it is 0.284. The shipped product may differ from what this report describes. Survey the release branch too.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."}],"signals_run":19,"conclusive_signals":15,"what_a_person_adds":[{"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":"05.5","band":"adequate","layer":"deterministic","title":"15 credential-shaped strings added in the history sit in tests, examples, documentation or local development settings","signal":"secrets_in_history","weight":"corroborating","context":true,"evidence":[{"kind":"metric","ref":"history","detail":"5 cited: private key block, where fakes are usual"}],"observed":{"sample_matches":15,"inert_tokens_set_aside":0},"dimension":"05","rationale":"Strings shaped like credentials appear only where fakes are usual: test fixtures, examples, documentation, placeholders and local stacks. They are almost always fakes. Ask someone to confirm that none of them works anywhere, because a real key in a development file is still a real key.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects.","locations_withheld":5},{"id":"05.6","band":"adequate","layer":"deterministic","title":"1 Dockerfile runs the application as root","signal":"container_runs_as_root","weight":"corroborating","evidence":[{"ref":"no-USER-instruction","kind":"path","path":"docker/Dockerfile","detail":"runs as root"}],"observed":{"rootful":1,"dockerfiles":1},"dimension":"05","rationale":"No USER instruction switches away from root, so the process runs with full privileges inside the container. It is a one-line fix and an ordinary expectation, which is why its absence is worth asking about: it usually says more about whether anyone has reviewed the deployment than about this container specifically."},{"id":"05.20","band":"adequate","layer":"deterministic","title":"3 SQL statements built from strings","signal":"sql_from_strings","weight":"corroborating","context":true,"evidence":[{"ref":"presto-db-session-property-manager/src/main/java/com/facebook/presto/session/db/SessionPropertiesDao.java","kind":"path","path":"presto-db-session-property-manager/src/main/java/com/facebook/presto/session/db/SessionPropertiesDao.java","detail":"SQL built from a string","line_end":106,"line_start":106},{"ref":"presto-db-session-property-manager/src/main/java/com/facebook/presto/session/db/SessionPropertiesDao.java","kind":"path","path":"presto-db-session-property-manager/src/main/java/com/facebook/presto/session/db/SessionPropertiesDao.java","detail":"SQL built from a string","line_end":119,"line_start":119},{"ref":"presto-db-session-property-manager/src/main/java/com/facebook/presto/session/db/SessionPropertiesDao.java","kind":"path","path":"presto-db-session-property-manager/src/main/java/com/facebook/presto/session/db/SessionPropertiesDao.java","detail":"SQL built from a string","line_end":123,"line_start":123}],"observed":{"files":1,"sites":3,"value_interpolated":0},"dimension":"05","rationale":"3 places in product code build SQL by formatting or joining strings rather than passing parameters. In each, what the code shows going in is a table or column name, a constant, or something the line does not show, not a request's value. Ask whether any value reaches these strings, rather than a parameter.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.22","band":"adequate","layer":"deterministic","title":"1 deserialiser that can run code","signal":"unsafe_deserialization","weight":"corroborating","context":true,"evidence":[{"ref":"presto-native-execution/presto_cpp/presto_protocol/util.py","kind":"path","path":"presto-native-execution/presto_cpp/presto_protocol/util.py","detail":"code-executing deserialiser","line_end":98,"line_start":98}],"observed":{"sites":1},"dimension":"05","rationale":"1 places read data with a deserialiser that executes what it reads (`yaml.load` without a safe loader). That is safe on data the system wrote itself and remote code execution on anything else. Ask where each one's input comes from.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.26","band":"adequate","layer":"deterministic","title":"18 locked dependencies have published vulnerabilities, 24 high or critical","signal":"known_vulnerabilities","weight":"corroborating","context":true,"evidence":[{"ref":"presto-ui/src/yarn.lock","kind":"path","path":"presto-ui/src/yarn.lock","detail":"body-parser 1.20.5: GHSA-27r3-jxmh-p828 (high), fixed in 1.20.9"},{"ref":"presto-ui/src/yarn.lock","kind":"path","path":"presto-ui/src/yarn.lock","detail":"brace-expansion 1.1.12: GHSA-3jxr-9vmj-r5cp (high), fixed in 1.1.16"},{"ref":"presto-ui/src/yarn.lock","kind":"path","path":"presto-ui/src/yarn.lock","detail":"brace-expansion 2.0.2: GHSA-3jxr-9vmj-r5cp (high), fixed in 2.1.2"}],"observed":{"advisories":46,"dependencies":984,"high_or_critical":24,"pinned_to_a_commit":0,"ecosystems_not_read":["Maven"],"vulnerable_packages":18,"set_aside_not_imported":0,"high_or_critical_shipping":0},"dimension":"05","rationale":"18 of 984 locked dependencies match 46 published advisories in OSV, 24 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. This lockfile pins development tools alongside what ships and does not say which is which, so some of these may never reach a user.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."},{"id":"05.9","band":"adequate","layer":"deterministic","title":"2 vendored components with no licence","signal":"license_vendored_unlicensed","weight":"corroborating","context":true,"evidence":[{"ref":"presto-ui/src/static/vendor/clipboardjs","kind":"path","path":"presto-ui/src/static/vendor/clipboardjs","detail":"1 tracked files, no licence file"},{"ref":"presto-ui/src/static/vendor/html5shiv","kind":"path","path":"presto-ui/src/static/vendor/html5shiv","detail":"2 tracked files, no licence file"}],"observed":{"unlicensed":["presto-ui/src/static/vendor/clipboardjs","presto-ui/src/static/vendor/html5shiv"],"total_components":11,"stated_in_headers_or_notices":6},"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.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."}],"signals_run":34,"conclusive_signals":23,"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":"06.2","band":"adequate","layer":"deterministic","title":"No structured logging library is in use","signal":"structured_logging","weight":"corroborating","evidence":[{"ref":"logging-scan","kind":"metric","detail":"searched 11,216 files for 10 structured logging libraries; 0 matched"}],"observed":{},"dimension":"06","rationale":"Nothing references a structured logging library. Logs that are written to be read by a person are not searchable by a machine, which means incident response here is proportional to how well someone remembers the codebase rather than to what the tooling can find."},{"id":"06.9","band":"adequate","layer":"deterministic","title":"No error reporter is wired in","signal":"error_reporting","weight":"corroborating","context":true,"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.","context_why":"A note that does not affect this rating: notes like it are common in well-run projects."},{"id":"06.18","band":"adequate","layer":"deterministic","title":"1 of 12 deployed images carry no version, or `latest`","signal":"deployed_image_floats","weight":"corroborating","context":true,"evidence":[{"ref":"presto-kudu/conf/docker-compose-three-nodes.yaml","kind":"path","path":"presto-kudu/conf/docker-compose-three-nodes.yaml","detail":"image without a version","line_end":26,"line_start":26}],"observed":{"images":12,"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.","context_why":"A note that does not affect this rating: in Borehole's calibration, this check's notes were usually true but overstated."}],"signals_run":16,"conclusive_signals":11,"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 Java codebase. Does your engineering organisation already run Java in production, or would this be the first?"},{"id":"07.10","kind":"H+","question":"The bulk of this system sits in presto-main/, presto-native-execution/, presto-hive/. 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 (docker/Dockerfile and 21 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 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