{
  "date": "2026-10-18",
  "source_base": "d85b241a970c7c246f3959166986b60411292cac",
  "flink": "2.2.1",
  "jdk": "OpenJDK17",
  "platform": "Linux/WSL2 x86-64",
  "cpu": "Intel Core i7-12650H",
  "profile": "release+mimalloc, production Arrow IPC",
  "heap": "2 GiB",
  "parallelism": 1,
  "warmups": 2,
  "measurements": 5,
  "query": "SELECT k, AVG(DISTINCT CAST(t AS FLOAT)), AVG(DISTINCT CAST(b AS DOUBLE)) FROM src GROUP BY k",
  "source": "Runtime row source with nullable byte/long values; casts remain in measured query; null every seventh row; 127 FLOAT and up to 1024 DOUBLE values per key",
  "perimeter": "Full job with row source, row blackhole, both row/Arrow transposes, casts, JNI, membership and changelog; job-specific native consumption asserted",
  "correctness": {
    "flink2_2": 18,
    "flink1_18": 18,
    "criterion_floating_distinct_avg": 16
  },
  "native_library_sha256": "5437aa7d6d4fb789026008ba0d45ad2d08a14833088850cc2b95034bc39deb2c",
  "fixture_sha256": "7b444c943d53f6c4df0f6c70ee3dfb96e8c34e7a0531f045fed1d05631d0234e",
  "runs": [
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      "rows": 2000000,
      "keys": 64,
      "stock_median_seconds": 0.894357,
      "streamfusion_median_seconds": 0.787801,
      "stock_samples_seconds": [
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      "streamfusion_samples_seconds": [
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        {
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      ],
      "streamfusion_route": "native aggregate with both transposes and consumed records asserted",
      "command": "SF_BENCHMARK=true JAVA_HOME=<JDK17> mvn -pl streamfusion-runtime surefire:test -Pbench -Dsf.testForks=1 -Dtest=DistinctAggregateBenchmark -Ddistinct.floating=true -Ddistinct.rows=2000000 -Ddistinct.keys=64 -Ddistinct.warmup=2 -Ddistinct.runs=5 -Dsf.extraJvmArgs=-Xmx2g"
    },
    {
      "version": "origin",
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      "keys": 64,
      "stock_median_seconds": 0.895359,
      "streamfusion_median_seconds": 0.87194,
      "stock_samples_seconds": [
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        }
      ],
      "streamfusion_route": "original-origin aggregate fallback asserted; native planning remains enabled",
      "command": "SF_BENCHMARK=true JAVA_HOME=<JDK17> mvn -pl streamfusion-runtime surefire:test -Pbench -Dsf.testForks=1 -Dtest=DistinctAggregateBenchmark -Ddistinct.floating=true -Ddistinct.rows=2000000 -Ddistinct.keys=64 -Ddistinct.warmup=2 -Ddistinct.runs=5 -Dsf.extraJvmArgs=-Xmx2g -Ddistinct.expectNative=false"
    },
    {
      "version": "candidate",
      "rows": 2000000,
      "keys": 4096,
      "stock_median_seconds": 2.909029,
      "streamfusion_median_seconds": 1.674566,
      "stock_samples_seconds": [
        2.912426081,
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      ],
      "streamfusion_samples_seconds": [
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      ],
      "streamfusion_route": "native aggregate with both transposes and consumed records asserted",
      "command": "SF_BENCHMARK=true JAVA_HOME=<JDK17> mvn -pl streamfusion-runtime surefire:test -Pbench -Dsf.testForks=1 -Dtest=DistinctAggregateBenchmark -Ddistinct.floating=true -Ddistinct.rows=2000000 -Ddistinct.keys=4096 -Ddistinct.warmup=2 -Ddistinct.runs=5 -Dsf.extraJvmArgs=-Xmx2g"
    },
    {
      "version": "origin",
      "rows": 2000000,
      "keys": 4096,
      "stock_median_seconds": 2.79591,
      "streamfusion_median_seconds": 2.744675,
      "stock_samples_seconds": [
        2.766683622,
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      "streamfusion_samples_seconds": [
        2.638888651,
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      "trials": [
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        {
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        {
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          "warmup": true,
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        {
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        {
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        {
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        {
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        {
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        {
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        {
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          "seconds": 3.098243
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        {
          "engine": 1,
          "trial": 5,
          "warmup": false,
          "seconds": 2.908892
        },
        {
          "engine": 0,
          "trial": 5,
          "warmup": false,
          "seconds": 2.855019
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        {
          "engine": 0,
          "trial": 6,
          "warmup": false,
          "seconds": 2.79591
        },
        {
          "engine": 1,
          "trial": 6,
          "warmup": false,
          "seconds": 2.696583
        }
      ],
      "streamfusion_route": "original-origin aggregate fallback asserted; native planning remains enabled",
      "command": "SF_BENCHMARK=true JAVA_HOME=<JDK17> mvn -pl streamfusion-runtime surefire:test -Pbench -Dsf.testForks=1 -Dtest=DistinctAggregateBenchmark -Ddistinct.floating=true -Ddistinct.rows=2000000 -Ddistinct.keys=4096 -Ddistinct.warmup=2 -Ddistinct.runs=5 -Dsf.extraJvmArgs=-Xmx2g -Ddistinct.expectNative=false"
    }
  ],
  "notes": [
    "Origin controls use a separate JVM and have their own paired stock measurements; retain control drift.",
    "These are complete-job measurements including startup.",
    "An earlier keys64 pilot, before exposing the key-count parameter, measured stock0.968302/native0.818374 seconds; it is not pooled with retained identical-fixture runs."
  ]
}