{
  "schema_version": 1,
  "status": "final_quiet",
  "baseline_revision": "96f98a32",
  "candidate": "perf/indexed-state-handoff-working-tree",
  "fixture_source_sha256": {
    "src/test/java/tech/streamfusion/SparseIntervalJoinBenchmark.java": "664b4ea129b1a12a029729a18c82cfec677f26d695fbc87bab46dcdf3de9613f"
  },
  "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": {
      "left_rows": 65536,
      "key_domain": 16384,
      "right_probes": 4096,
      "matching_key_domain": 256,
      "payload_suffix_bytes": 264
    },
    "correctness_witness": {
      "left_rows": 4096,
      "key_domain": 2048,
      "right_probes": 128,
      "matching_key_domain": 8,
      "comparison": "stock/native output parity"
    },
    "native_plan_requires": [
      "NativeIntervalJoin",
      "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": [
        0.222311744,
        0.141149267,
        0.152195435,
        0.224991812,
        0.143320042
      ],
      "stock_median_seconds": 0.152195435,
      "stock_min_max_seconds": [
        0.141149267,
        0.224991812
      ],
      "stock_quartiles_seconds": [
        0.143320042,
        0.222311744
      ],
      "stock_iqr_seconds": 0.078991702,
      "native_seconds": [
        0.195178777,
        0.13355374,
        0.118467653,
        0.192501712,
        0.12957756
      ],
      "native_median_seconds": 0.13355374,
      "native_min_max_seconds": [
        0.118467653,
        0.195178777
      ],
      "native_quartiles_seconds": [
        0.12957756,
        0.192501712
      ],
      "native_iqr_seconds": 0.06292415199999998,
      "stock_over_native_median": 1.1395819765137238
    },
    "after": {
      "status": "final_quiet",
      "log_label": "state-authoritative-after.log",
      "build_result": "SUCCESS",
      "stock_seconds": [
        0.262599709,
        0.20198738,
        0.166387113,
        0.148023209,
        0.154940531
      ],
      "stock_median_seconds": 0.166387113,
      "stock_min_max_seconds": [
        0.148023209,
        0.262599709
      ],
      "stock_quartiles_seconds": [
        0.154940531,
        0.20198738
      ],
      "stock_iqr_seconds": 0.047046849,
      "native_seconds": [
        0.140895228,
        0.219998598,
        0.131984083,
        0.183663066,
        0.144959149
      ],
      "native_median_seconds": 0.144959149,
      "native_min_max_seconds": [
        0.131984083,
        0.219998598
      ],
      "native_quartiles_seconds": [
        0.140895228,
        0.183663066
      ],
      "native_iqr_seconds": 0.042767838,
      "stock_over_native_median": 1.1478207077498779
    }
  },
  "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": [
            0.207508652,
            0.207657884,
            0.157256832,
            0.152034642,
            0.158914266
          ],
          "native_seconds": [
            0.22083364,
            0.120493277,
            0.121757625,
            0.177935265,
            0.147392104
          ],
          "stock_median_seconds": 0.158914266,
          "native_median_seconds": 0.147392104,
          "stock_min_max_seconds": [
            0.152034642,
            0.207657884
          ],
          "native_min_max_seconds": [
            0.120493277,
            0.22083364
          ],
          "build_result": "SUCCESS"
        },
        "after": {
          "status": "provisional_contended",
          "stock_seconds": [
            0.171481672,
            0.150278974,
            0.151516761,
            0.146254586,
            0.156695141
          ],
          "native_seconds": [
            0.150949029,
            0.135426615,
            0.279546751,
            0.146585682,
            0.137816762
          ],
          "stock_median_seconds": 0.151516761,
          "native_median_seconds": 0.146585682,
          "stock_min_max_seconds": [
            0.146254586,
            0.171481672
          ],
          "native_min_max_seconds": [
            0.135426615,
            0.279546751
          ],
          "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": [
            0.249311996,
            0.261783,
            0.230724103,
            0.264259647,
            0.257313744
          ],
          "native_seconds": [
            0.273282233,
            0.317503812,
            0.229424356,
            0.250870362,
            0.231240817
          ],
          "stock_median_seconds": 0.257313744,
          "native_median_seconds": 0.250870362
        },
        "after": {
          "status": "provisional_contended",
          "stock_seconds": [
            0.2309581,
            0.14699306,
            0.138245511,
            0.141993893,
            0.13296117
          ],
          "native_seconds": [
            0.206485204,
            0.152693406,
            0.146859795,
            0.142494125,
            0.205249352
          ],
          "stock_median_seconds": 0.141993893,
          "native_median_seconds": 0.152693406
        }
      }
    }
  ],
  "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": 0.9213198402537531,
    "stock_control_after_over_before_median": 1.093246410445885,
    "interpretation": "No demonstrated complete-job gain or stable regression: native median rose8.5% while stock control rose9.3%, with overlapping native trial ranges and similar stock/native ratios. Selective fixed-retained-state kernel improved separately."
  }
}