{
  "schema_version": 1,
  "status": "final_quiet",
  "baseline_revision": "96f98a32",
  "candidate": "perf/indexed-state-handoff-working-tree",
  "fixture_source_sha256": {
    "src/test/java/tech/streamfusion/PendingDedupBenchmark.java": "3f3ef5f446825e4839f169c81eed140d72fb1eea3935959a9d8b21762b6d47d4"
  },
  "environment": {
    "native_build": "release Maven bench profile",
    "jdk": "OpenJDK17",
    "flink": "2.2.1",
    "allocator": "mimalloc (Maven bench profile)"
  },
  "methodology": {
    "boundary": "table.executeSql(INSERT).await(): planning, runtime startup, row-fed sources, row\u2192Arrow and Arrow\u2192row transposes, JNI, native state and real TaskManager budget accounting, terminal watermark drain, rowwise blackhole sink",
    "outside_timer": "Environment/input construction, untimed output parity witness and native explain-plan verification",
    "warmup_trials_per_engine": 2,
    "retained_trials_per_engine": 5,
    "engine_order": "Alternating stock/native order by trial",
    "parallelism": 1,
    "watermarks": "No intermediate watermarks; bounded terminal watermark only",
    "configuration": {
      "rows": 262144,
      "key_domain": 16384,
      "payload_suffix_bytes": 8
    },
    "correctness_witness": {
      "rows": 4096,
      "key_domain": 2048,
      "comparison": "kinded stock/native output parity"
    },
    "native_plan_requires": [
      "NativeDeduplicate",
      "RowDataToArrow",
      "ArrowToRowData"
    ],
    "runtime_execution_check": "Installed planner substitutions must be nonzero for every native trial",
    "statistics": "Median, min/max and inclusive linearly interpolated quartiles/IQR; all five observations retained, no outliers dropped",
    "limitations": [
      "Complete bounded job includes startup; no sustained throughput inference",
      "Source interleaving in interval job is scheduler-dependent; Criterion fixes preloaded retained-state timing",
      "No checkpoints triggered in timed jobs"
    ]
  },
  "observations": {
    "before": {
      "status": "final_quiet",
      "log_label": "state-authoritative-before.log",
      "build_result": "SUCCESS",
      "stock_seconds": [
        0.346828698,
        0.241494373,
        0.200685995,
        0.203907689,
        0.270593069
      ],
      "stock_median_seconds": 0.241494373,
      "stock_min_max_seconds": [
        0.200685995,
        0.346828698
      ],
      "stock_quartiles_seconds": [
        0.203907689,
        0.270593069
      ],
      "stock_iqr_seconds": 0.06668538000000002,
      "native_seconds": [
        0.389874222,
        0.335074401,
        0.317284466,
        0.311145123,
        0.306230824
      ],
      "native_median_seconds": 0.317284466,
      "native_min_max_seconds": [
        0.306230824,
        0.389874222
      ],
      "native_quartiles_seconds": [
        0.311145123,
        0.335074401
      ],
      "native_iqr_seconds": 0.023929278,
      "stock_over_native_median": 0.7611288886736738
    },
    "after": {
      "status": "final_quiet",
      "log_label": "state-authoritative-after.log",
      "build_result": "SUCCESS",
      "stock_seconds": [
        0.383405798,
        0.239453415,
        0.284318141,
        0.304508914,
        0.216723549
      ],
      "stock_median_seconds": 0.284318141,
      "stock_min_max_seconds": [
        0.216723549,
        0.383405798
      ],
      "stock_quartiles_seconds": [
        0.239453415,
        0.304508914
      ],
      "stock_iqr_seconds": 0.06505549900000002,
      "native_seconds": [
        0.227419314,
        0.174058386,
        0.15811694,
        0.167082299,
        0.189293084
      ],
      "native_median_seconds": 0.174058386,
      "native_min_max_seconds": [
        0.15811694,
        0.227419314
      ],
      "native_quartiles_seconds": [
        0.167082299,
        0.189293084
      ],
      "native_iqr_seconds": 0.02221078500000001,
      "stock_over_native_median": 1.6334641928714657
    }
  },
  "additional_provisional_pairs": [
    {
      "label": "state-jobs-quiet-before/after",
      "status": "provisional_contended",
      "reason": "An unrelated worktree Nexmark process began08:01:39 and overlapped these08:04/08:05 measurements. Raw observations retained; final performance conclusions require a quiet-host rerun.",
      "observations": {
        "before": {
          "status": "provisional_contended",
          "stock_seconds": [
            0.27279597,
            0.2267222,
            0.222455303,
            0.222331636,
            0.255239858
          ],
          "native_seconds": [
            0.338615189,
            0.346427373,
            0.330969947,
            0.323500469,
            0.315445533
          ],
          "stock_median_seconds": 0.2267222,
          "native_median_seconds": 0.330969947,
          "stock_min_max_seconds": [
            0.222331636,
            0.27279597
          ],
          "native_min_max_seconds": [
            0.315445533,
            0.346427373
          ],
          "build_result": "SUCCESS"
        },
        "after": {
          "status": "provisional_contended",
          "stock_seconds": [
            0.260366975,
            0.258985941,
            0.211714916,
            0.269293048,
            0.211897212
          ],
          "native_seconds": [
            0.338525028,
            0.156003284,
            0.144629218,
            0.149232252,
            0.151203711
          ],
          "stock_median_seconds": 0.258985941,
          "native_median_seconds": 0.151203711,
          "stock_min_max_seconds": [
            0.211714916,
            0.269293048
          ],
          "native_min_max_seconds": [
            0.144629218,
            0.338525028
          ],
          "build_result": "SUCCESS"
        }
      }
    },
    {
      "label": "quiet-final-before/after",
      "status": "provisional_contended",
      "reason": "Unrelated Fluss benchmark began08:08:56; candidate JVM began08:09:02. Baseline state measurements preceded that activity, but candidate overlapped.",
      "observations": {
        "before": {
          "status": "provisional_quiet_baseline",
          "stock_seconds": [
            0.254125917,
            0.217238808,
            0.203043178,
            0.21828774,
            0.206548551
          ],
          "native_seconds": [
            0.400431546,
            0.318905311,
            0.328107131,
            0.321286654,
            0.310268585
          ],
          "stock_median_seconds": 0.217238808,
          "native_median_seconds": 0.321286654
        },
        "after": {
          "status": "provisional_contended",
          "stock_seconds": [
            0.554490165,
            0.370520349,
            0.254924253,
            0.347932749,
            0.361962571
          ],
          "native_seconds": [
            0.318361564,
            0.267906367,
            0.301599781,
            0.225943011,
            0.18901978
          ],
          "stock_median_seconds": 0.361962571,
          "native_median_seconds": 0.267906367
        }
      }
    }
  ],
  "host_validation": "Manual process snapshots before pair and continuous final-host-monitor; no competing external Java benchmark/build observed throughout this authoritative pair.",
  "summary": {
    "native_before_over_after_median": 1.8228622779485038,
    "stock_control_after_over_before_median": 1.1773282228816155,
    "interpretation": "Demonstrated complete-job native improvement and candidate faster than its same-run stock control; five startup-including trials with retained variability."
  }
}