{ "schema_version": 1, "date": "2026-11-01", "purpose": "Complete-job cost of correctness-verified scalar bridges inside ROW/MAP table functions under the accepted UDF performance exception; no acceleration claim. UTC timestamps can fall on the following date.", "candidate_revision": "e501372c425d7444adce299497dfaf309f66df00", "previous_revision": "a4515d7b77a9cecf42b3286f33a088beb0034bd1", "native_sha256": "f1098d58d12acd9421bec50a6cfc9e49aa29eabaf3113773e656380e9dda6a2b", "source_sha256": { "src/main/java/tech/streamfusion/planner/TableFunctionMatcher.java": "563e6c62f31aee929658da2231a9a5e18c496ad1459e06829fff4db1a95264c7", "src/test/java/tech/streamfusion/FlinkNestedBridgeTableFunctionSqlHarnessTest.java": "8ee6e316b342d98fe2698585d248a10e4268473028e05e8d81201a4850f051d2", "src/test/java/tech/streamfusion/NestedBridgeTableFunctionBenchmark.java": "6b3e14d2bca981bab30e4c1f379a801979fe61fe042e39c88acd8f1bba10bb76" }, "native_source_tree": "cf034cfd984cb14c935f57fd130a92b57089bcc5", "environment": { "os": "Darwin", "architecture": "arm64", "logical_cpus": 10, "memory_bytes": 17179869184, "jdk": "Temurin 17.0.17", "heap": "3 GiB" }, "method": { "jdk": "Temurin 17.0.17", "heap": "3 GiB", "parallelism": 1, "transpose_batch_rows": 1024, "native_profile": "release/mimalloc", "warmup_pairs": 2, "measured_pairs": 5, "rows": 262144, "input": "64 prebuilt logical payload patterns repeated, including NULL parents/leaves, empty maps, raw floating bits, JDBC dates/timestamps and epoch-unit key collisions. Identical fixture sources on both revisions. Source serialization, callbacks with runtime leaf-class checks, released recursive converters, immediate output mutation, owned writes and output consumption remain in the complete job.", "timing": "Submission through completion after symmetric EXPLAIN. Every case/revision/line has its own fresh JVM; stock/enabled jobs alternate within each pair. Prepared inputs and planning precede timing; job startup/JIT, row source and blackhole sink remain timed.", "native_evidence": "Candidate requires NativeTableFunction, RowDataToArrow and ArrowToRowData in the plan, no fallback reasons and positive table-function input. Previous production requires zero substitutions and no native work; it is genuine stock fallback.", "previous_fixture_only_copies": [ "src/test/java/tech/streamfusion/FlinkNestedBridgeTableFunctionSqlHarnessTest.java", "src/test/java/tech/streamfusion/NestedBridgeTableFunctionBenchmark.java" ], "preparation": "On each checkout and Flink line: mvn -B -ntp -pl streamfusion-runtime -Pbench[,flink-1.18] -Dnative.build.skip=true -Dnative.resource.directory= -Dmaven.javadoc.skip=true -DskipTests clean test-compile. Set JAVA_HOME to JDK 17 and SF_BENCHMARK=true for measurements.", "serialization": "No correctness/build workload from this goal overlaps measured jobs; native and Java build preparation finishes before each line starts timing." }, "correctness": { "new_checks_per_line": 411, "broader_checks_per_line": 1098, "flink_2_2": "1096 passed initially; two stale ROW fallback expectations corrected, four targeted ROW/ARRAY controls then passed. No table-function implementation changed after that regression run; the measured revision also incorporates canonical Java-only DECIMAL fixes in #583.", "flink_1_18": "1098 passed, zero failures/errors/skips.", "recovery": "All outer changelog kinds, two forced restores per scenario, heap and native RocksDB, positive consumed target input and released native memory." }, "limitations": [ "Short complete jobs retain startup and JIT variability; this is not an isolated steady-state operation benchmark.", "Separate JVM stock controls may drift. All warmups and measured samples, including unfavorable results, are retained.", "Host CPUs are not reserved. Host observations are sampled every ten seconds and cannot rule out brief interference.", "UDF callbacks and owned conversions can cost more than stock Flink. Positive native work is coverage evidence, not acceleration evidence.", "Some short series finished between host snapshots, leaving no sampled Java process. Other series have long launch-to-observation intervals despite short reported job times. All outer timestamps are retained; they do not identify the cause or placement of scheduling delays." ], "series": [ { "variant": "candidate", "flink_line": "1.18", "case": "NESTED_BRIDGE_row:primitive-FLOAT", "rows": 262144, "stock_seconds": [ 0.262489917, 0.259581917, 0.232669291, 0.236655541, 0.219128666 ], "enabled_seconds": [ 0.52212325, 0.516533709, 0.494087834, 0.509234875, 0.461138291 ], "stock_summary_seconds": { "median": 0.236655541, "minimum": 0.219128666, "maximum": 0.262489917 }, "enabled_summary_seconds": { "median": 0.509234875, "minimum": 0.461138291, "maximum": 0.52212325 }, "trials_in_execution_order": [ { "engine": "stock", "trial": 0, "warmup": true, "rows": 262144, "seconds_printed": 1.107797 }, { "engine": "native", "trial": 0, "warmup": true, "rows": 262144, "seconds_printed": 1.061146 }, { "engine": "native", "trial": 1, "warmup": true, "rows": 262144, "seconds_printed": 0.635273 }, { "engine": "stock", "trial": 1, "warmup": true, "rows": 262144, "seconds_printed": 0.30684 }, { "engine": "stock", "trial": 2, "warmup": false, "rows": 262144, "seconds_printed": 0.26249 }, { "engine": "native", "trial": 2, "warmup": false, "rows": 262144, "seconds_printed": 0.522123 }, { "engine": "native", "trial": 3, "warmup": false, "rows": 262144, "seconds_printed": 0.516534 }, { "engine": "stock", "trial": 3, "warmup": false, "rows": 262144, "seconds_printed": 0.259582 }, { "engine": "stock", "trial": 4, "warmup": false, "rows": 262144, "seconds_printed": 0.232669 }, { "engine": "native", "trial": 4, "warmup": false, "rows": 262144, "seconds_printed": 0.494088 }, { "engine": "native", "trial": 5, "warmup": false, "rows": 262144, "seconds_printed": 0.509235 }, { "engine": "stock", "trial": 5, "warmup": false, "rows": 262144, "seconds_printed": 0.236656 }, { "engine": "stock", "trial": 6, "warmup": false, "rows": 262144, "seconds_printed": 0.219129 }, { "engine": "native", "trial": 6, "warmup": false, "rows": 262144, "seconds_printed": 0.461138 } ], "start_utc": "2026-11-02T03:55:58Z", "end_utc": "2026-11-02T03:56:20Z", "command": [ "mvn", "-B", "-ntp", "-pl", "streamfusion-runtime", "-Pbench,flink-1.18", "-Dnative.build.skip=true", "-Dtest=NestedBridgeTableFunctionBenchmark", "-Dsf.testForks=1", "-Dsf.benchmarkJvmArgs=-Xmx3g -Dstreamfusion.exchange.zeroCopyLocal=false", "-Dsf.extraJvmArgs=-Djava.library.path=", "-Dboundary.nestedBridges=row:primitive-FLOAT", "-Dboundary.rows=262144", "-Dboundary.warmups=2", "-Dboundary.runs=5", "-Dboundary.expectNative=true", "surefire:test@default-test" ], "sampled_host": { "samples": 3, "java_pids_observed": [ 48858, 48876 ], "maximum_java_rss_kib": 967280, "maximum_observed_process_cpu_pct": 295.8, "snapshot_times_utc": [ "2026-11-02T03:55:58Z", "2026-11-02T03:56:08Z", "2026-11-02T03:56:18Z" ], "runtime_java_observation_available": true }, "launch_to_observed_completion_seconds": 22.0, "observation_note": "End timestamp is when the driver observed process completion. This interval can include scheduling gaps outside timed jobs; it is not the per-job processing duration." }, { "variant": "previous", "flink_line": "1.18", "case": "NESTED_BRIDGE_row:primitive-FLOAT", "rows": 262144, "stock_seconds": [ 0.25328525, 0.25914625, 0.259432125, 0.213619459, 0.276983667 ], "enabled_seconds": [ 0.276448125, 0.289416625, 0.232193208, 0.225945792, 0.223605833 ], "stock_summary_seconds": { "median": 0.25914625, "minimum": 0.213619459, "maximum": 0.276983667 }, "enabled_summary_seconds": { "median": 0.232193208, "minimum": 0.223605833, "maximum": 0.289416625 }, "trials_in_execution_order": [ { "engine": "stock", "trial": 0, "warmup": true, "rows": 262144, "seconds_printed": 0.98999 }, { "engine": "native", "trial": 0, "warmup": true, "rows": 262144, "seconds_printed": 0.336494 }, { "engine": "native", "trial": 1, "warmup": true, "rows": 262144, "seconds_printed": 0.319449 }, { "engine": "stock", "trial": 1, "warmup": true, "rows": 262144, "seconds_printed": 0.264271 }, { "engine": "stock", "trial": 2, "warmup": false, "rows": 262144, "seconds_printed": 0.253285 }, { "engine": "native", "trial": 2, "warmup": false, "rows": 262144, "seconds_printed": 0.276448 }, { "engine": "native", "trial": 3, "warmup": false, "rows": 262144, "seconds_printed": 0.289417 }, { "engine": "stock", "trial": 3, "warmup": false, "rows": 262144, "seconds_printed": 0.259146 }, { "engine": "stock", "trial": 4, "warmup": false, "rows": 262144, "seconds_printed": 0.259432 }, { "engine": "native", "trial": 4, "warmup": false, "rows": 262144, "seconds_printed": 0.232193 }, { "engine": "native", "trial": 5, "warmup": false, "rows": 262144, "seconds_printed": 0.225946 }, { "engine": "stock", "trial": 5, "warmup": false, "rows": 262144, "seconds_printed": 0.213619 }, { "engine": "stock", "trial": 6, "warmup": false, "rows": 262144, "seconds_printed": 0.276984 }, { "engine": "native", "trial": 6, "warmup": false, "rows": 262144, "seconds_printed": 0.223606 } ], "start_utc": "2026-11-02T03:56:20Z", "end_utc": "2026-11-02T03:56:40Z", "command": [ "mvn", "-B", "-ntp", "-pl", "streamfusion-runtime", "-Pbench,flink-1.18", "-Dnative.build.skip=true", "-Dtest=NestedBridgeTableFunctionBenchmark", "-Dsf.testForks=1", "-Dsf.benchmarkJvmArgs=-Xmx3g -Dstreamfusion.exchange.zeroCopyLocal=false", "-Dsf.extraJvmArgs=-Djava.library.path=", "-Dboundary.nestedBridges=row:primitive-FLOAT", "-Dboundary.rows=262144", "-Dboundary.warmups=2", "-Dboundary.runs=5", "-Dboundary.expectNative=false", "surefire:test@default-test" ], "sampled_host": { "samples": 2, "java_pids_observed": [ 48917, 48947 ], "maximum_java_rss_kib": 463232, "maximum_observed_process_cpu_pct": 236.5, "snapshot_times_utc": [ "2026-11-02T03:56:20Z", "2026-11-02T03:56:30Z" ], "runtime_java_observation_available": true }, "launch_to_observed_completion_seconds": 20.0, "observation_note": "End timestamp is when the driver observed process completion. This interval can include scheduling gaps outside timed jobs; it is not the per-job processing duration." }, { "variant": "candidate", "flink_line": "1.18", "case": "NESTED_BRIDGE_row_map:date-sql", "rows": 262144, "stock_seconds": [ 0.463758833, 0.406667875, 0.447033458, 0.430045791, 0.424962334 ], "enabled_seconds": [ 1.159786083, 1.145536958, 1.243058667, 1.225586875, 1.201369917 ], "stock_summary_seconds": { "median": 0.430045791, "minimum": 0.406667875, "maximum": 0.463758833 }, "enabled_summary_seconds": { "median": 1.201369917, "minimum": 1.145536958, "maximum": 1.243058667 }, "trials_in_execution_order": [ { "engine": "stock", "trial": 0, "warmup": true, "rows": 262144, "seconds_printed": 1.437813 }, { "engine": "native", "trial": 0, "warmup": true, "rows": 262144, "seconds_printed": 2.172273 }, { "engine": "native", "trial": 1, "warmup": true, "rows": 262144, "seconds_printed": 1.334941 }, { "engine": "stock", "trial": 1, "warmup": true, "rows": 262144, "seconds_printed": 0.513079 }, { "engine": "stock", "trial": 2, "warmup": false, "rows": 262144, "seconds_printed": 0.463759 }, { "engine": "native", "trial": 2, "warmup": false, "rows": 262144, "seconds_printed": 1.159786 }, { "engine": "native", "trial": 3, "warmup": false, "rows": 262144, "seconds_printed": 1.145537 }, { "engine": "stock", "trial": 3, "warmup": false, "rows": 262144, "seconds_printed": 0.406668 }, { "engine": "stock", "trial": 4, "warmup": false, "rows": 262144, "seconds_printed": 0.447033 }, { "engine": "native", "trial": 4, "warmup": false, "rows": 262144, "seconds_printed": 1.243059 }, { "engine": "native", "trial": 5, "warmup": false, "rows": 262144, "seconds_printed": 1.225587 }, { "engine": "stock", "trial": 5, "warmup": false, "rows": 262144, "seconds_printed": 0.430046 }, { "engine": "stock", "trial": 6, "warmup": false, "rows": 262144, "seconds_printed": 0.424962 }, { "engine": "native", "trial": 6, "warmup": false, "rows": 262144, "seconds_printed": 1.20137 } ], "start_utc": "2026-11-02T03:56:40Z", "end_utc": "2026-11-02T03:57:09Z", "command": [ "mvn", "-B", "-ntp", "-pl", "streamfusion-runtime", "-Pbench,flink-1.18", "-Dnative.build.skip=true", "-Dtest=NestedBridgeTableFunctionBenchmark", "-Dsf.testForks=1", "-Dsf.benchmarkJvmArgs=-Xmx3g -Dstreamfusion.exchange.zeroCopyLocal=false", "-Dsf.extraJvmArgs=-Djava.library.path=", "-Dboundary.nestedBridges=row_map:date-sql", "-Dboundary.rows=262144", "-Dboundary.warmups=2", "-Dboundary.runs=5", "-Dboundary.expectNative=true", "surefire:test@default-test" ], "sampled_host": { "samples": 3, "java_pids_observed": [ 48952, 48970 ], "maximum_java_rss_kib": 1042432, "maximum_observed_process_cpu_pct": 293.5, "snapshot_times_utc": [ "2026-11-02T03:56:40Z", "2026-11-02T03:56:50Z", "2026-11-02T03:57:00Z" ], "runtime_java_observation_available": true }, "launch_to_observed_completion_seconds": 29.0, "observation_note": "End timestamp is when the driver observed process completion. This interval can include scheduling gaps outside timed jobs; it is not the per-job processing duration." }, { "variant": "previous", "flink_line": "1.18", "case": "NESTED_BRIDGE_row_map:date-sql", "rows": 262144, "stock_seconds": [ 0.526207083, 0.409297916, 0.454936583, 0.408724875, 0.398543167 ], "enabled_seconds": [ 0.426966833, 0.418703458, 0.422396375, 0.422961041, 0.399272833 ], "stock_summary_seconds": { "median": 0.409297916, "minimum": 0.398543167, "maximum": 0.526207083 }, "enabled_summary_seconds": { "median": 0.422396375, "minimum": 0.399272833, "maximum": 0.426966833 }, "trials_in_execution_order": [ { "engine": "stock", "trial": 0, "warmup": true, "rows": 262144, "seconds_printed": 1.469179 }, { "engine": "native", "trial": 0, "warmup": true, "rows": 262144, "seconds_printed": 0.677993 }, { "engine": "native", "trial": 1, "warmup": true, "rows": 262144, "seconds_printed": 0.587412 }, { "engine": "stock", "trial": 1, "warmup": true, "rows": 262144, "seconds_printed": 0.511752 }, { "engine": "stock", "trial": 2, "warmup": false, "rows": 262144, "seconds_printed": 0.526207 }, { "engine": "native", "trial": 2, "warmup": false, "rows": 262144, "seconds_printed": 0.426967 }, { "engine": "native", "trial": 3, "warmup": false, "rows": 262144, "seconds_printed": 0.418703 }, { "engine": "stock", "trial": 3, "warmup": false, "rows": 262144, "seconds_printed": 0.409298 }, { "engine": "stock", "trial": 4, "warmup": false, "rows": 262144, "seconds_printed": 0.454937 }, { "engine": "native", "trial": 4, "warmup": false, "rows": 262144, "seconds_printed": 0.422396 }, { "engine": "native", "trial": 5, "warmup": false, "rows": 262144, "seconds_printed": 0.422961 }, { "engine": "stock", "trial": 5, "warmup": false, "rows": 262144, "seconds_printed": 0.408725 }, { "engine": "stock", "trial": 6, "warmup": false, "rows": 262144, "seconds_printed": 0.398543 }, { "engine": "native", "trial": 6, "warmup": false, "rows": 262144, "seconds_printed": 0.399273 } ], "start_utc": "2026-11-02T03:57:09Z", "end_utc": "2026-11-02T03:57:31Z", "command": [ "mvn", "-B", "-ntp", "-pl", "streamfusion-runtime", "-Pbench,flink-1.18", "-Dnative.build.skip=true", "-Dtest=NestedBridgeTableFunctionBenchmark", "-Dsf.testForks=1", "-Dsf.benchmarkJvmArgs=-Xmx3g -Dstreamfusion.exchange.zeroCopyLocal=false", "-Dsf.extraJvmArgs=-Djava.library.path=", "-Dboundary.nestedBridges=row_map:date-sql", "-Dboundary.rows=262144", "-Dboundary.warmups=2", "-Dboundary.runs=5", "-Dboundary.expectNative=false", "surefire:test@default-test" ], "sampled_host": { "samples": 3, "java_pids_observed": [ 48974, 48992 ], "maximum_java_rss_kib": 977696, "maximum_observed_process_cpu_pct": 273.0, "snapshot_times_utc": [ "2026-11-02T03:57:09Z", "2026-11-02T03:57:19Z", "2026-11-02T03:57:29Z" ], "runtime_java_observation_available": true }, "launch_to_observed_completion_seconds": 22.0, "observation_note": "End timestamp is when the driver observed process completion. 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