{
  "date": "2026-11-10",
  "platform": "Apple M4 (10 cores), macOS 15.3.1, Temurin 17",
  "build": "release, existing engine and Parquet libraries",
  "resources": {
    "parallelism": 1,
    "heap_gib": 8,
    "task_offheap_gib": 1,
    "decoder_rows": 4096
  },
  "warmups": 2,
  "measured_trials": 5,
  "order": "rotating three engines",
  "query": "SELECT SUM(id), COUNT(name), COUNT(*) FROM h",
  "table": "Java-written Hudi 1.2.1 COW version 9, unpartitioned, id BIGINT and name STRING (every seventh name NULL)",
  "streaming": {
    "start": "Hudi default latest completed commit",
    "check_interval_seconds": 1,
    "mini_batch_rows": 4096,
    "mini_batch_latency_ms": 50
  },
  "timer": "executeSql through delivery of the aggregate with all input rows; includes planning/admission, discovery, Java I/O, JNI, intrinsic conversions and result collection. Fixture writes, explain assertions and cancellation/termination after the final observed aggregate are outside timing.",
  "previous_sf": "native aggregate over stock continuous Hudi source; hudiSource disabled",
  "validation": "Every trial requires the expected native source/aggregate plan, count, id sum and non-NULL name count.",
  "measurements": [
    {
      "rows": 200000,
      "trial_ms": {
        "stock": [
          718.65975,
          588.149791,
          650.931459,
          640.29275,
          716.451792
        ],
        "previous_sf": [
          740.338583,
          697.211125,
          696.482958,
          607.265583,
          813.864625
        ],
        "native": [
          711.914333,
          635.242667,
          600.254542,
          722.232958,
          666.026667
        ]
      },
      "summary_ms": {
        "stock": {
          "median": 650.931459,
          "minimum": 588.149791,
          "maximum": 718.65975
        },
        "previous_sf": {
          "median": 697.211125,
          "minimum": 607.265583,
          "maximum": 813.864625
        },
        "native": {
          "median": 666.026667,
          "minimum": 600.254542,
          "maximum": 722.232958
        }
      }
    },
    {
      "rows": 1000000,
      "trial_ms": {
        "stock": [
          867.607875,
          876.225833,
          953.673917,
          704.094417,
          950.356917
        ],
        "previous_sf": [
          863.670459,
          980.472583,
          820.018917,
          802.097041,
          715.200583
        ],
        "native": [
          872.09625,
          770.966791,
          614.009417,
          598.174167,
          599.74275
        ]
      },
      "summary_ms": {
        "stock": {
          "median": 876.225833,
          "minimum": 704.094417,
          "maximum": 953.673917
        },
        "previous_sf": {
          "median": 820.018917,
          "minimum": 715.200583,
          "maximum": 980.472583
        },
        "native": {
          "median": 614.009417,
          "minimum": 598.174167,
          "maximum": 872.09625
        }
      }
    }
  ],
  "limits": "One completed input commit per trial; this measures catch-up through the continuous source, not steady-state commit latency or delete changelogs. 200k results show no consistent gain."
}