{
  "purpose": "Builtin generated UNNEST complete-job comparison, including rejected binary ROW cache prototypes.",
  "prior_commit": "8eb53c8b7871a53ffb1a4275f43ec877c8d9e39b",
  "native_library_sha256": "803e0f0cbc25b351dbe3f0fe408d306dfd5f5ca2ff30f7c6edc2c4a40d8f4823",
  "host_signature_probes": [
    {
      "flink": "1.18.1",
      "shape": "map_row",
      "rows": 10,
      "entries": 4,
      "string_bytes": 8,
      "source_cardinality": 4096,
      "warmup_pairs": 0,
      "requested_pairs": 1,
      "completed_jobs": 0,
      "outcome": "Stock planning rejected ProjectToCalcRule: IllegalArgumentException Type mismatch, ROW peek_no_expand versus ordinary ROW. Native planner had not been installed.",
      "log_sha256": "4e00f81e2dabd394b661a8bbca2a7811d7a3a0e3ff609d9a2bcc6dcdf8e21dfa"
    }
  ],
  "rust_production_changes": false,
  "initial_source_hashes": {
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    "src/main/java/tech/streamfusion/operator/NativeColumnarTableFunctionOperator.java": "9ed38b46ce37fddcafdbf3e416c0c3f1e1f98e7300d3e777432d34cb46015257",
    "src/main/java/tech/streamfusion/planner/CalcMatcher.java": "91dcabb158118f2c4255710d764f5d10eda19e43e1bef6157e60042e6c31fa26",
    "src/main/java/tech/streamfusion/planner/CollectionValueIdentity.java": "5c3678b5c71263d479d17ac08929e4d9e99cdd5e542c8d7a5063c0d43607c88c",
    "src/main/java/tech/streamfusion/planner/PhysicalPlanScan.java": "b406870c76702ff53f78bd6c2eb1fa7b15195adb8ec40827eb5cc7d9bbcb9a4f",
    "src/main/java/tech/streamfusion/planner/UnnestMatcher.java": "ebae7045b366739025849b7cc8836e5cddfda300a9cc8dc9433076be3c33523d",
    "src/main/java/tech/streamfusion/planner/GeneratedUnnestMatcher.java": "71ffcb1cd9200b987811880137e27d3c989fe43f776fbe687c260edb43b164e7",
    "src/main/java/tech/streamfusion/planner/StreamPhysicalNativeGeneratedUnnest.java": "056c7ac62df3c6c8cc1cdabaae1154f11309dee9d0113677ac859077f4fac12c",
    "src/main/java/tech/streamfusion/planner/NativeGeneratedUnnestExecNode.java": "30b55fcc909550770fe41d835bac12df2f5bce14db2d370ab758af7166cead6f",
    "src/test/java/tech/streamfusion/GeneratedUnnestBenchmark.java": "6ac3a8740a4a19075caaf290a36d351643d54fb70ed5ddf45d867d350129cf4a"
  },
  "unbounded_lazy_source_hashes": {
    "src/main/java/tech/streamfusion/arrow/ArrowConversion.java": "d127563ecc2cd1fbfc131b0334d10f915adf35a0432ddfd34582780787834069",
    "src/main/java/tech/streamfusion/arrow/NestedRepresentation.java": "7a78ce97288519e9119f484b9cecad869431f6a2e2ce210b89bb551788551280",
    "src/main/java/tech/streamfusion/arrow/StringCacheColumns.java": "0b3e9379768d3668833df84eb62c917b012ace6e384e3eae360734b43e04ede7",
    "src/main/java/tech/streamfusion/arrow/Utf16Cache.java": "dcca280052bea569325fa1a959367e7bb737b38ee910f59de261c6d8151e43dc",
    "src/main/java/tech/streamfusion/arrow/vectors/ArrowRowColumnVector.java": "d36e8a437d1a7b8dfd914140967de7441db9a1e73932ae8a71521263f8d0abb1",
    "src/main/java/tech/streamfusion/arrow/writers/NestedStringWriter.java": "950d6938df975642b61fa6973cf876603b8bf3ac2ebb431466cdd36ed9a9c6fa",
    "src/main/java/tech/streamfusion/arrow/writers/RowWriter.java": "b686b746e2af46bbd8a48f11c4c5cf4ee0f88ff158169641fdf6e32f92652e19",
    "src/main/java/tech/streamfusion/operator/ArrowToRowDataOperator.java": "e40850599d126ebe46a213f2079892888357ae802dc8a2f713a87b81005423e7",
    "src/main/java/tech/streamfusion/operator/NativeColumnarTableFunctionOperator.java": "011f5ed5a594597ac730327d09b6bb0fe5ae45632705451d1e174b3cb3b63f9c",
    "src/main/java/tech/streamfusion/planner/ArrowToRowDataExecNode.java": "25b5fe3d5421fd86b99926f02580efcc4ee458754606ce6bd180b15df4ded083",
    "src/main/java/tech/streamfusion/planner/CalcMatcher.java": "2a77cdcd42da5c652525580f0845c31c0d9ad8cbe8b625a448687b42a2bbd420",
    "src/main/java/tech/streamfusion/planner/CollectionValueIdentity.java": "7ebc8cd637e299dc07e499b7c723cc9174b7eb32782dcca3c6951ca34d21ebac",
    "src/main/java/tech/streamfusion/planner/GeneratedUnnestMatcher.java": "c853c17201a098aa7f8ea90abf95ff08d52aaa0288c2b0b217a9feb05d05694e",
    "src/main/java/tech/streamfusion/planner/NativeGeneratedUnnestExecNode.java": "30b55fcc909550770fe41d835bac12df2f5bce14db2d370ab758af7166cead6f",
    "src/main/java/tech/streamfusion/planner/PhysicalPlanScan.java": "043357074b4a5ee37ddea8079c1c0a52b9f2f819a338fbc6bb3f77682c3639df",
    "src/main/java/tech/streamfusion/planner/RexExpression.java": "45b3de4ffcfe32fd5ce3b76d886c247e74cd95653453c2bc6b5ce29596ca39a7",
    "src/main/java/tech/streamfusion/planner/StreamPhysicalArrowToRowData.java": "abd1b6498907bde17bc036d158e455ee5aa159df90cd0afc3942568da535711b",
    "src/main/java/tech/streamfusion/planner/StreamPhysicalNativeGeneratedUnnest.java": "056c7ac62df3c6c8cc1cdabaae1154f11309dee9d0113677ac859077f4fac12c",
    "src/main/java/tech/streamfusion/planner/UnnestMatcher.java": "ce3cf6312d0af7b2775c445d2671715c006465ad1b44df3715b6fdd4b87841dc"
  },
  "bulk_only_source_hashes": {
    "src/main/java/tech/streamfusion/arrow/ArrowConversion.java": "d127563ecc2cd1fbfc131b0334d10f915adf35a0432ddfd34582780787834069",
    "src/main/java/tech/streamfusion/arrow/NestedRepresentation.java": "7a78ce97288519e9119f484b9cecad869431f6a2e2ce210b89bb551788551280",
    "src/main/java/tech/streamfusion/arrow/StringCacheColumns.java": "9696a72d5424795f7d60ea8c86815ac4b31d7359e24906d895fc47a2de15876a",
    "src/main/java/tech/streamfusion/arrow/Utf16Cache.java": "dcca280052bea569325fa1a959367e7bb737b38ee910f59de261c6d8151e43dc",
    "src/main/java/tech/streamfusion/arrow/vectors/ArrowRowColumnVector.java": "d36e8a437d1a7b8dfd914140967de7441db9a1e73932ae8a71521263f8d0abb1",
    "src/main/java/tech/streamfusion/arrow/writers/NestedStringWriter.java": "950d6938df975642b61fa6973cf876603b8bf3ac2ebb431466cdd36ed9a9c6fa",
    "src/main/java/tech/streamfusion/arrow/writers/RowWriter.java": "b686b746e2af46bbd8a48f11c4c5cf4ee0f88ff158169641fdf6e32f92652e19",
    "src/main/java/tech/streamfusion/operator/ArrowToRowDataOperator.java": "e40850599d126ebe46a213f2079892888357ae802dc8a2f713a87b81005423e7",
    "src/main/java/tech/streamfusion/operator/NativeColumnarTableFunctionOperator.java": "011f5ed5a594597ac730327d09b6bb0fe5ae45632705451d1e174b3cb3b63f9c",
    "src/main/java/tech/streamfusion/planner/ArrowToRowDataExecNode.java": "25b5fe3d5421fd86b99926f02580efcc4ee458754606ce6bd180b15df4ded083",
    "src/main/java/tech/streamfusion/planner/CalcMatcher.java": "2a77cdcd42da5c652525580f0845c31c0d9ad8cbe8b625a448687b42a2bbd420",
    "src/main/java/tech/streamfusion/planner/CollectionValueIdentity.java": "7ebc8cd637e299dc07e499b7c723cc9174b7eb32782dcca3c6951ca34d21ebac",
    "src/main/java/tech/streamfusion/planner/GeneratedUnnestMatcher.java": "c853c17201a098aa7f8ea90abf95ff08d52aaa0288c2b0b217a9feb05d05694e",
    "src/main/java/tech/streamfusion/planner/NativeGeneratedUnnestExecNode.java": "30b55fcc909550770fe41d835bac12df2f5bce14db2d370ab758af7166cead6f",
    "src/main/java/tech/streamfusion/planner/PhysicalPlanScan.java": "043357074b4a5ee37ddea8079c1c0a52b9f2f819a338fbc6bb3f77682c3639df",
    "src/main/java/tech/streamfusion/planner/RexExpression.java": "45b3de4ffcfe32fd5ce3b76d886c247e74cd95653453c2bc6b5ce29596ca39a7",
    "src/main/java/tech/streamfusion/planner/StreamPhysicalArrowToRowData.java": "abd1b6498907bde17bc036d158e455ee5aa159df90cd0afc3942568da535711b",
    "src/main/java/tech/streamfusion/planner/StreamPhysicalNativeGeneratedUnnest.java": "056c7ac62df3c6c8cc1cdabaae1154f11309dee9d0113677ac859077f4fac12c",
    "src/main/java/tech/streamfusion/planner/UnnestMatcher.java": "ce3cf6312d0af7b2775c445d2671715c006465ad1b44df3715b6fdd4b87841dc"
  },
  "before_wide_optimization": {
    "base": "8eb53c8b7871a53ffb1a4275f43ec877c8d9e39b",
    "native_sha256": "803e0f0cbc25b351dbe3f0fe408d306dfd5f5ca2ff30f7c6edc2c4a40d8f4823",
    "sources": {
      "src/main/java/tech/streamfusion/arrow/ArrowConversion.java": "d127563ecc2cd1fbfc131b0334d10f915adf35a0432ddfd34582780787834069",
      "src/main/java/tech/streamfusion/arrow/NestedRepresentation.java": "7a78ce97288519e9119f484b9cecad869431f6a2e2ce210b89bb551788551280",
      "src/main/java/tech/streamfusion/arrow/vectors/ArrowRowColumnVector.java": "d36e8a437d1a7b8dfd914140967de7441db9a1e73932ae8a71521263f8d0abb1",
      "src/main/java/tech/streamfusion/arrow/writers/RowWriter.java": "b686b746e2af46bbd8a48f11c4c5cf4ee0f88ff158169641fdf6e32f92652e19",
      "src/main/java/tech/streamfusion/operator/ArrowToRowDataOperator.java": "e40850599d126ebe46a213f2079892888357ae802dc8a2f713a87b81005423e7",
      "src/main/java/tech/streamfusion/operator/NativeColumnarTableFunctionOperator.java": "011f5ed5a594597ac730327d09b6bb0fe5ae45632705451d1e174b3cb3b63f9c",
      "src/main/java/tech/streamfusion/planner/ArrowToRowDataExecNode.java": "25b5fe3d5421fd86b99926f02580efcc4ee458754606ce6bd180b15df4ded083",
      "src/main/java/tech/streamfusion/planner/CalcMatcher.java": "2a77cdcd42da5c652525580f0845c31c0d9ad8cbe8b625a448687b42a2bbd420",
      "src/main/java/tech/streamfusion/planner/CollectionValueIdentity.java": "7ebc8cd637e299dc07e499b7c723cc9174b7eb32782dcca3c6951ca34d21ebac",
      "src/main/java/tech/streamfusion/planner/GeneratedUnnestMatcher.java": "c853c17201a098aa7f8ea90abf95ff08d52aaa0288c2b0b217a9feb05d05694e",
      "src/main/java/tech/streamfusion/planner/NativeGeneratedUnnestExecNode.java": "30b55fcc909550770fe41d835bac12df2f5bce14db2d370ab758af7166cead6f",
      "src/main/java/tech/streamfusion/planner/PhysicalPlanScan.java": "043357074b4a5ee37ddea8079c1c0a52b9f2f819a338fbc6bb3f77682c3639df",
      "src/main/java/tech/streamfusion/planner/RexExpression.java": "45b3de4ffcfe32fd5ce3b76d886c247e74cd95653453c2bc6b5ce29596ca39a7",
      "src/main/java/tech/streamfusion/planner/StreamPhysicalArrowToRowData.java": "abd1b6498907bde17bc036d158e455ee5aa159df90cd0afc3942568da535711b",
      "src/main/java/tech/streamfusion/planner/StreamPhysicalNativeGeneratedUnnest.java": "056c7ac62df3c6c8cc1cdabaae1154f11309dee9d0113677ac859077f4fac12c",
      "src/main/java/tech/streamfusion/planner/UnnestMatcher.java": "ce3cf6312d0af7b2775c445d2671715c006465ad1b44df3715b6fdd4b87841dc",
      "src/test/java/tech/streamfusion/GeneratedUnnestBenchmark.java": "6ac3a8740a4a19075caaf290a36d351643d54fb70ed5ddf45d867d350129cf4a"
    },
    "source_archive_sha256": "ff0b559b6972f5d412c830aaefa8747454983e64bc2f4a5682ea3598cc4ed82b"
  },
  "final_source_hashes": {
    "src/main/java/tech/streamfusion/arrow/ArrowConversion.java": "d127563ecc2cd1fbfc131b0334d10f915adf35a0432ddfd34582780787834069",
    "src/main/java/tech/streamfusion/arrow/Utf16Cache.java": "3e5d745db993423fadd58eda34177527f817ad6a2d004625a43029fc98fac66c",
    "src/main/java/tech/streamfusion/operator/NativeColumnarTableFunctionOperator.java": "011f5ed5a594597ac730327d09b6bb0fe5ae45632705451d1e174b3cb3b63f9c",
    "src/main/java/tech/streamfusion/planner/CalcMatcher.java": "2a77cdcd42da5c652525580f0845c31c0d9ad8cbe8b625a448687b42a2bbd420",
    "src/main/java/tech/streamfusion/planner/CollectionValueIdentity.java": "7ebc8cd637e299dc07e499b7c723cc9174b7eb32782dcca3c6951ca34d21ebac",
    "src/main/java/tech/streamfusion/planner/GeneratedUnnestMatcher.java": "0250ec0a280d51128426d5cd6e8f1fdebd1731b5285211a8e1988eebc3c5c05e",
    "src/main/java/tech/streamfusion/planner/NativeGeneratedUnnestExecNode.java": "30b55fcc909550770fe41d835bac12df2f5bce14db2d370ab758af7166cead6f",
    "src/main/java/tech/streamfusion/planner/PhysicalPlanScan.java": "043357074b4a5ee37ddea8079c1c0a52b9f2f819a338fbc6bb3f77682c3639df",
    "src/main/java/tech/streamfusion/planner/StreamPhysicalNativeGeneratedUnnest.java": "056c7ac62df3c6c8cc1cdabaae1154f11309dee9d0113677ac859077f4fac12c",
    "src/main/java/tech/streamfusion/planner/UnnestMatcher.java": "218ece9369e3a7d069e88b97ef678ee194a780bf8ce57f2b87548e86af65080d",
    "src/test/java/tech/streamfusion/GeneratedUnnestBenchmark.java": "6ac3a8740a4a19075caaf290a36d351643d54fb70ed5ddf45d867d350129cf4a"
  },
  "flink118_source_hashes": {
    "src/main/java/tech/streamfusion/arrow/ArrowConversion.java": "d127563ecc2cd1fbfc131b0334d10f915adf35a0432ddfd34582780787834069",
    "src/main/java/tech/streamfusion/arrow/Utf16Cache.java": "3e5d745db993423fadd58eda34177527f817ad6a2d004625a43029fc98fac66c",
    "src/main/java/tech/streamfusion/operator/NativeColumnarTableFunctionOperator.java": "011f5ed5a594597ac730327d09b6bb0fe5ae45632705451d1e174b3cb3b63f9c",
    "src/main/java/tech/streamfusion/planner/CalcMatcher.java": "2a77cdcd42da5c652525580f0845c31c0d9ad8cbe8b625a448687b42a2bbd420",
    "src/main/java/tech/streamfusion/planner/CollectionValueIdentity.java": "7ebc8cd637e299dc07e499b7c723cc9174b7eb32782dcca3c6951ca34d21ebac",
    "src/main/java/tech/streamfusion/planner/GeneratedUnnestMatcher.java": "c853c17201a098aa7f8ea90abf95ff08d52aaa0288c2b0b217a9feb05d05694e",
    "src/main/java/tech/streamfusion/planner/NativeGeneratedUnnestExecNode.java": "30b55fcc909550770fe41d835bac12df2f5bce14db2d370ab758af7166cead6f",
    "src/main/java/tech/streamfusion/planner/PhysicalPlanScan.java": "043357074b4a5ee37ddea8079c1c0a52b9f2f819a338fbc6bb3f77682c3639df",
    "src/main/java/tech/streamfusion/planner/StreamPhysicalNativeGeneratedUnnest.java": "056c7ac62df3c6c8cc1cdabaae1154f11309dee9d0113677ac859077f4fac12c",
    "src/main/java/tech/streamfusion/planner/UnnestMatcher.java": "ce3cf6312d0af7b2775c445d2671715c006465ad1b44df3715b6fdd4b87841dc",
    "src/test/java/tech/streamfusion/GeneratedUnnestBenchmark.java": "6ac3a8740a4a19075caaf290a36d351643d54fb70ed5ddf45d867d350129cf4a"
  },
  "flink118_source_note": "After Flink 1.18 timings, only unsuccessful-admission diagnostic wording changed in the two UNNEST matchers; their pre-wording hashes are recorded separately. Admitted execution paths are unchanged.",
  "configuration": {
    "jdk": "17",
    "flink": "recorded per profile",
    "verified_max_heap_bytes": 2147483648,
    "native": "release/mimalloc",
    "parallelism": 1,
    "heap": "2GiB",
    "timezone": "America/New_York",
    "batch_rows": 1024,
    "zero_copy_local": false,
    "warmup_pairs": 2,
    "measured_alternating_pairs": 3,
    "source": "row fromSequence/map with nullable strings and nullable/empty arrays",
    "sink": "row blackhole",
    "timed_boundary": "executeSql through completion, including planning/deployment/source/expansion/optional state/both transposes/sink; cluster construction and initial explain excluded",
    "concurrency": "exclusive, no other builds/tests/timings"
  },
  "implementation_phases": {
    "initial": "Generated correlate with preserving Arrow inputs/outputs, pruned inputs/projection; nested ROW output uses recursive readers/serializer copies.",
    "binary_cache": "Rejected prototype caching only BinaryRowData; actual MAP ROW values are NestedRowData, so the dominant copy cost remained. Exact Java source snapshot was not retained.",
    "cache_projection": "Caches BinaryRowData and NestedRowData, verified immediate binary exit projection. Later configuration/watermark checks do not affect this benchmark SQL.",
    "prior": "Frozen prior production, identical fixture; zero native substitutions asserted.",
    "final": "Final candidate; generated UNNEST and both transposes asserted; consumed rows asserted, including grouped consumer.",
    "validation_before": "Pre-optimization wider fixtures; the 128-byte updating string MAP is slower than stock. All measurements retained.",
    "validation_bulk": "Bulk UTF-16 copies alone improved the updating 128-byte string MAP, but still lost to stock; all trials retained.",
    "validation_lazy": "Unbounded scratch and lazy sidecars: wide-string median slightly beats stock with overlapping ranges. Retained before bounding scratch to 8KiB.",
    "validation": "Final candidate with larger sources, wider payloads/expansions, changed input cardinality and all four source RowKinds.",
    "prior_validation": "Frozen prior production with the corresponding validation fixture and zero native substitutions.",
    "before118": "UTF-16 bulk copies and lazy sidecars on Flink 1.18.1, before bounding writer scratch to 8KiB; all representative candidate widths are below the bound.",
    "final118": "Final candidate on released Flink 1.18.1, identical production code and benchmark fixture, separately compiled compatibility sources.",
    "prior118": "Frozen prior production on released Flink 1.18.1, identical fixture; zero native substitutions asserted."
  },
  "allocation_artifact": "generated-unnest-allocations-2026-10-18.csv",
  "cpu_profile_artifact": "generated-unnest-profiles-2026-10-18.json",
  "notes": [
    "Startup remains included; these are complete-job medians, not guaranteed sustained-throughput gains.",
    "Prior controls run in separate JVMs; their paired stock trials expose drift.",
    "Every initial and intermediate losing measurement is retained.",
    "CPU-profile durations are diagnostic and excluded from these comparisons.",
    "The initial ROW output loss motivated the owned payload and verified exit optimization; the first payload-only attempt also lost."
  ],
  "profiles": [
    {
      "phase": "initial",
      "log": "sf-generated-unnest-initial-0-map_numeric.log",
      "log_sha256": "6952d99babec55e341f012de485668c74875df6f72c58a69e856786f8e8b0686",
      "flink": "2.2.1",
      "trials": [
        {
          "shape": "map_numeric",
          "grouped": false,
          "updating": false,
          "rows": 2000000,
          "entries": 4,
          "bytes": 8,
          "keys": 4096,
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 3.412513911
        },
        {
          "shape": "map_numeric",
          "grouped": false,
          "updating": false,
          "rows": 2000000,
          "entries": 4,
          "bytes": 8,
          "keys": 4096,
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 1.571389201
        },
        {
          "shape": "map_numeric",
          "grouped": false,
          "updating": false,
          "rows": 2000000,
          "entries": 4,
          "bytes": 8,
          "keys": 4096,
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 1.322150614
        },
        {
          "shape": "map_numeric",
          "grouped": false,
          "updating": false,
          "rows": 2000000,
          "entries": 4,
          "bytes": 8,
          "keys": 4096,
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 2.800657515
        },
        {
          "shape": "map_numeric",
          "grouped": false,
          "updating": false,
          "rows": 2000000,
          "entries": 4,
          "bytes": 8,
          "keys": 4096,
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 2.773161245
        },
        {
          "shape": "map_numeric",
          "grouped": false,
          "updating": false,
          "rows": 2000000,
          "entries": 4,
          "bytes": 8,
          "keys": 4096,
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 1.30371945
        },
        {
          "shape": "map_numeric",
          "grouped": false,
          "updating": false,
          "rows": 2000000,
          "entries": 4,
          "bytes": 8,
          "keys": 4096,
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 1.29032374
        },
        {
          "shape": "map_numeric",
          "grouped": false,
          "updating": false,
          "rows": 2000000,
          "entries": 4,
          "bytes": 8,
          "keys": 4096,
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 2.79504396
        },
        {
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