{
  "date": "2026-10-16",
  "baseline_commit": "b170a474d5658330ed7e92e9b8bcc54117c8d287",
  "machine": "Apple M4 Pro, 24 GiB RAM, macOS 26.5",
  "jdk": "17",
  "flink": "2.2.1 (released)",
  "native_profile": "release, default features, system allocator",
  "heap": "8 GiB",
  "parallelism": 1,
  "warmup": 2,
  "measured_runs": 5,
  "null_every": 7,
  "mini_batch_rows": 1024,
  "mini_batch_latency": "1 h",
  "shuffle": "Arrow IPC (bench profile)",
  "measured_boundary": "Complete row-source/blackhole job; submission, conversion, JNI, native state, output and completion included. MiniCluster creation excluded.",
  "ordering": "Alternating engine order per trial",
  "baseline": "Unmodified baseline planner; native-enabled runs assert zero substitutions; identical benchmark source and release native payload",
  "records": [
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      "stage": "borrowed-generated-prototype",
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  "candidate_configuration": "table.exec.legacy-cast-behaviour=ENABLED; streamfusion.calc.legacyNumericCasts.enabled=true (default false)",
  "admission": "Opt-in compatibility groundwork; standalone regression prevents default admission.",
  "off_heap_accounting_budget": "48 GiB in the shared fixture for both engines; not a reservation or measured resident usage"
}