STET

flux-pr-859

graphql-go-tools (Go) · W2 · GPT-5.1 Codex Mini

pass_with_warn

Tests passed. 1/1 commands passed. Strength: strong.

96.6% run pass rate
Tier 1
primary testspassednon equivalentfail
go test -C v2 ./... -count=1 -timeout=300s
gold passagent pass

Partial score: 1/1

Publishable: yesCache: miss

Trajectory

codex · partial order only

provider-native trajectory captured; validation and decision steps are appended with coarse ordering only

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patch written
Patch captured
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Flux captured agent.patch for this trial

validation
Tests passed
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go

equivalence
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non_equivalent

code review
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fail

decision
Final decision
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pass_with_warn

Quality

equivalence
non_equivalent
86% confidence
code review
fail
3 findings
footprint
medium (0.45)
behavioral
100.0%
cost
$3.07 · 10.4M

Equivalence Reasoning

behavioral

The agent patch improves lookup performance, but it changes `addedPathDSHash` semantics: it now returns an arbitrary datasource hash from a map iteration, instead of the first-added occurrence for a path. The original behavior (and gold patch) preserves first occurrence ordering, which can affect planner decisions and makes behavior potentially nondeterministic.

Code Review

correctness: 1/4edge case handling: 1/4introduced bug risk: 1/4maintainability idioms: 2/4

The agent patch likely does not satisfy the intended change cleanly: it introduces a clear nondeterminism regression in path-to-datasource lookup and adds broader behavioral/API changes that increase failure risk beyond the targeted performance fix.

3 findings
Nondeterministic datasource selection for previously added paths
major

`addedPathDSHash` now returns the first key from a `map[DSHash]struct{}` iteration, which is random iteration order in Go. The original behavior depended on first insertion/order, so planner behavior can vary run-to-run when the same path is added by multiple datasources.

v2/pkg/engine/plan/configuration_visitor.go:199
Lazy lookup builders mutate shared metadata on read paths
major

Lookup caches are built inside query methods (`HasRootNode`, `HasChildNode`, interface/object checks). This introduces mutation during reads and can race under concurrent planner usage, unlike eager one-time initialization.

v2/pkg/engine/plan/datasource_configuration.go:75
Patch is over-scoped versus intended PR and increases API surface
major

The change adds new planner-facing interface methods and rewires multiple visitors for interface-object/entity checks, which is beyond the stated targeted optimization and raises compatibility/maintenance risk.

v2/pkg/engine/plan/datasource_configuration.go:64