{ "environment": { "line": "1.18", "baseline": "d951a83808425f9e7df7c0f6fc3fdb082443885f", "candidate": "fa4f40c024d6b0c7af4bfce6bb8847ca7c654d2d", "cpu": "AMD EPYC 9V45 96-Core Processor", "platform": "Linux-7.0.0-1017-azure-x86_64-with-glibc2.39", "java": "openjdk version \"17.0.20.1\" 2026-08-18\nOpenJDK Runtime Environment Temurin-17.0.20.1+1 (build 17.0.20.1+1)\nOpenJDK 64-Bit Server VM Temurin-17.0.20.1+1 (build 17.0.20.1+1, mixed mode, sharing)\n", "native_sha256": "6a6f08b809980168d73b8f078d7e572c37519691f4a246c9658ecb784ee8fa9b", "native_features": "release, no-default-features, mimalloc", "heap": "2 GiB", "parallelism": 1, "warmup": 2, "runs": 5, "rows": 2000000, "method": "Fresh JVM per expression/cohort; alternating stock/native pairs; MiniCluster construction and explain outside timing; production sources, transposes, JNI, deployment and row sink inside." }, "records": [ { "cohort": "previous", "case": "map", "expression": "MAP[CAST(idx AS BIGINT),CAST(idx AS BIGINT)]", "map_source": false, "type": "BIGINT", "width": 8, "stock_trials": [ 0.493254666, 0.513804856, 0.510356251, 0.479862378, 0.473473584 ], "native_trials": [ 0.70654657, 0.766442381, 0.703628758, 0.712644655, 0.636073921 ], "route_evidence": [ "[collection-engine] [NativeCalc functions: native=[], jvm=[MAP, CAST], reason=MAP retains Flink's generated-expression key deduplication]", "[collection-route] [{jobId=df373b86af5f0bed01408e0e44c7fe75, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[MAP(CAST(idx AS BIGINT), CAST(idx AS BIGINT)) AS v, true AS a, recordsIn=2000000}]", "[collection-route] [{jobId=3e341ab1a0217d0bc44a69f78d3cf73a, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[MAP(CAST(idx AS BIGINT), CAST(idx AS BIGINT)) AS v, true AS a, recordsIn=2000000}]", "[collection-route] [{jobId=f032ad92b0e235402d4a998d07c7090b, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[MAP(CAST(idx AS BIGINT), CAST(idx AS BIGINT)) AS v, true AS a, recordsIn=2000000}]", "[collection-route] [{jobId=8e88e108ccd50b1b660678582f4236cc, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[MAP(CAST(idx AS BIGINT), CAST(idx AS BIGINT)) AS v, true AS a, recordsIn=2000000}]", "[collection-route] [{jobId=89041db5bf1fb3967334caefad1b15b8, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[MAP(CAST(idx AS BIGINT), CAST(idx AS BIGINT)) AS v, true AS a, recordsIn=2000000}]", "[collection-route] [{jobId=f3e197c9ea20c7185bb2443cb3d3946e, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[MAP(CAST(idx AS BIGINT), CAST(idx AS BIGINT)) AS v, true AS a, recordsIn=2000000}]", "[collection-route] [{jobId=4aedecb9ceae6c187a00a4407a9bb1e2, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[MAP(CAST(idx AS BIGINT), CAST(idx AS BIGINT)) AS v, true AS a, recordsIn=2000000}]" ], "all_trials": [ "[collection-trial] engine=flink trial=0 warmup=true rows=2000000 seconds=1.044960155", "[collection-trial] engine=native trial=0 warmup=true rows=2000000 seconds=1.276526066", "[collection-trial] engine=native trial=1 warmup=true rows=2000000 seconds=0.835257452", "[collection-trial] engine=flink trial=1 warmup=true rows=2000000 seconds=0.492023525", "[collection-trial] engine=flink trial=2 warmup=false rows=2000000 seconds=0.493254666", "[collection-trial] engine=native trial=2 warmup=false rows=2000000 seconds=0.706546570", "[collection-trial] engine=native trial=3 warmup=false rows=2000000 seconds=0.766442381", "[collection-trial] engine=flink trial=3 warmup=false rows=2000000 seconds=0.513804856", "[collection-trial] engine=flink trial=4 warmup=false rows=2000000 seconds=0.510356251", "[collection-trial] engine=native trial=4 warmup=false rows=2000000 seconds=0.703628758", "[collection-trial] engine=native trial=5 warmup=false rows=2000000 seconds=0.712644655", "[collection-trial] engine=flink trial=5 warmup=false rows=2000000 seconds=0.479862378", "[collection-trial] engine=flink trial=6 warmup=false rows=2000000 seconds=0.473473584", "[collection-trial] engine=native trial=6 warmup=false rows=2000000 seconds=0.636073921" ] }, { "cohort": "previous", "case": "join", "expression": "ARRAY_JOIN(arr,'|','?')", "map_source": false, "type": "STRING", "width": 8, "stock_trials": [ 1.736884654, 1.736486138, 1.778947611, 1.796353791, 1.721249956 ], "native_trials": [ 1.469596072, 1.429277527, 1.486876379, 1.370815975, 1.340342864 ], "route_evidence": [ "[collection-engine] [NativeCalc functions: native=[ARRAY_JOIN], jvm=[]]", "[collection-route] [{recordsOut=2000000, subtask=0, attempt=0, jobId=bb540f4cbd0c90d350087e279cf68558, recordsIn=2000000, operator=NativeCalc(select=[ARRAY_JOIN(arr, '|', '?') 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attempt=0}]", "[collection-route] [{jobId=5c95199a2e0b9d9b2df7edcc125c6eb6, recordsIn=2000000, operator=NativeCalc(select=[TYPEOF(idx) AS v, true AS anchor], nativeFunctions=[TYPEOF], , recordsOut=2000000, subtask=0, attempt=0}]" ], "all_trials": [ "[collection-trial] engine=flink trial=0 warmup=true rows=2000000 seconds=0.899857639", "[collection-trial] engine=native trial=0 warmup=true rows=2000000 seconds=0.552599689", "[collection-trial] engine=native trial=1 warmup=true rows=2000000 seconds=0.445023273", "[collection-trial] engine=flink trial=1 warmup=true rows=2000000 seconds=0.361347159", "[collection-trial] engine=flink trial=2 warmup=false rows=2000000 seconds=0.343660949", "[collection-trial] engine=native trial=2 warmup=false rows=2000000 seconds=0.496378913", "[collection-trial] engine=native trial=3 warmup=false rows=2000000 seconds=0.393081360", "[collection-trial] engine=flink trial=3 warmup=false rows=2000000 seconds=0.524704792", "[collection-trial] engine=flink trial=4 warmup=false rows=2000000 seconds=0.386583828", "[collection-trial] engine=native trial=4 warmup=false rows=2000000 seconds=0.388771223", "[collection-trial] engine=native trial=5 warmup=false rows=2000000 seconds=0.353038295", "[collection-trial] engine=flink trial=5 warmup=false rows=2000000 seconds=0.369778668", "[collection-trial] engine=flink trial=6 warmup=false rows=2000000 seconds=0.398146429", "[collection-trial] engine=native trial=6 warmup=false rows=2000000 seconds=0.326283436" ] }, { "cohort": "candidate", "case": "map", "expression": "MAP[CAST(idx AS BIGINT),CAST(idx AS BIGINT)]", "map_source": false, "type": "BIGINT", "width": 8, "stock_trials": [ 0.460283617, 0.50772316, 0.473142753, 0.474555063, 0.469934029 ], "native_trials": [ 0.74339373, 0.682523455, 0.661108926, 0.654529512, 0.697823332 ], "route_evidence": [ "[collection-engine] [NativeCalc functions: native=[], jvm=[MAP, CAST], reason=MAP retains Flink's generated-expression key deduplication]", 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engine=native trial=2 warmup=false rows=2000000 seconds=0.743393730", "[collection-trial] engine=native trial=3 warmup=false rows=2000000 seconds=0.682523455", "[collection-trial] engine=flink trial=3 warmup=false rows=2000000 seconds=0.507723160", "[collection-trial] engine=flink trial=4 warmup=false rows=2000000 seconds=0.473142753", "[collection-trial] engine=native trial=4 warmup=false rows=2000000 seconds=0.661108926", "[collection-trial] engine=native trial=5 warmup=false rows=2000000 seconds=0.654529512", "[collection-trial] engine=flink trial=5 warmup=false rows=2000000 seconds=0.474555063", "[collection-trial] engine=flink trial=6 warmup=false rows=2000000 seconds=0.469934029", "[collection-trial] engine=native trial=6 warmup=false rows=2000000 seconds=0.697823332" ] }, { "cohort": "candidate", "case": "join", "expression": "ARRAY_JOIN(arr,'|','?')", "map_source": false, "type": "STRING", "width": 8, "stock_trials": [ 1.647800418, 1.68068447, 1.717286136, 1.743619757, 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AS v, true AS anchor], nativeFuncti}]" ], "all_trials": [ "[collection-trial] engine=flink trial=0 warmup=true rows=2000000 seconds=2.328164209", "[collection-trial] engine=native trial=0 warmup=true rows=2000000 seconds=1.590953561", "[collection-trial] engine=native trial=1 warmup=true rows=2000000 seconds=1.406562445", "[collection-trial] engine=flink trial=1 warmup=true rows=2000000 seconds=1.657658615", "[collection-trial] engine=flink trial=2 warmup=false rows=2000000 seconds=1.647800418", "[collection-trial] engine=native trial=2 warmup=false rows=2000000 seconds=1.552931148", "[collection-trial] engine=native trial=3 warmup=false rows=2000000 seconds=1.436335226", "[collection-trial] engine=flink trial=3 warmup=false rows=2000000 seconds=1.680684470", "[collection-trial] engine=flink trial=4 warmup=false rows=2000000 seconds=1.717286136", "[collection-trial] engine=native trial=4 warmup=false rows=2000000 seconds=1.493404148", "[collection-trial] engine=native trial=5 warmup=false rows=2000000 seconds=1.453026122", "[collection-trial] engine=flink trial=5 warmup=false rows=2000000 seconds=1.743619757", "[collection-trial] engine=flink trial=6 warmup=false rows=2000000 seconds=1.727359455", "[collection-trial] engine=native trial=6 warmup=false rows=2000000 seconds=1.440319860" ] }, { "cohort": "candidate", "case": "typeof", "expression": "TYPEOF(idx)", "map_source": false, "type": "BIGINT", "width": 8, "stock_trials": [ 0.364345638, 0.364471261, 0.337544089, 0.313962187, 0.33196894 ], "native_trials": [ 0.435102154, 0.399433682, 0.362736886, 0.317016764, 0.320809613 ], "route_evidence": [ "[collection-engine] [NativeCalc functions: native=[TYPEOF], jvm=[]]", "[collection-route] [{jobId=d69a917321ed1e30f8f58bcd38d67aec, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[TYPEOF(idx) AS v, true AS anchor], nativeFunctions=[TYPEOF], , recordsIn=2000000}]", "[collection-route] [{jobId=6b3ccfb59f7b9c425e3bda2d00ab785d, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[TYPEOF(idx) AS v, true AS anchor], nativeFunctions=[TYPEOF], , recordsIn=2000000}]", "[collection-route] [{jobId=a987610969c9c70568a368cbf2a5b529, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[TYPEOF(idx) AS v, true AS anchor], nativeFunctions=[TYPEOF], , recordsIn=2000000}]", "[collection-route] [{jobId=4642adeda9da5c7818e08d144a4f96cd, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[TYPEOF(idx) AS v, true AS anchor], nativeFunctions=[TYPEOF], , recordsIn=2000000}]", "[collection-route] [{jobId=ea9831f6ebc86d827f393e554fac8c8e, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[TYPEOF(idx) AS v, true AS anchor], nativeFunctions=[TYPEOF], , recordsIn=2000000}]", "[collection-route] [{jobId=665a16e874abd878f8f8b8ffaa76a258, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[TYPEOF(idx) AS v, true AS anchor], nativeFunctions=[TYPEOF], , recordsIn=2000000}]", "[collection-route] [{jobId=70a98b638e1c8dafc9720bcfe0e13065, attempt=0, subtask=0, recordsOut=2000000, operator=NativeCalc(select=[TYPEOF(idx) AS v, true AS anchor], nativeFunctions=[TYPEOF], , recordsIn=2000000}]" ], "all_trials": [ "[collection-trial] engine=flink trial=0 warmup=true rows=2000000 seconds=0.880204887", "[collection-trial] engine=native trial=0 warmup=true rows=2000000 seconds=0.541569844", "[collection-trial] engine=native trial=1 warmup=true rows=2000000 seconds=0.496393419", "[collection-trial] engine=flink trial=1 warmup=true rows=2000000 seconds=0.459163521", "[collection-trial] engine=flink trial=2 warmup=false rows=2000000 seconds=0.364345638", "[collection-trial] engine=native trial=2 warmup=false rows=2000000 seconds=0.435102154", "[collection-trial] engine=native trial=3 warmup=false rows=2000000 seconds=0.399433682", "[collection-trial] engine=flink trial=3 warmup=false rows=2000000 seconds=0.364471261", "[collection-trial] engine=flink trial=4 warmup=false rows=2000000 seconds=0.337544089", "[collection-trial] engine=native trial=4 warmup=false rows=2000000 seconds=0.362736886", "[collection-trial] engine=native trial=5 warmup=false rows=2000000 seconds=0.317016764", "[collection-trial] engine=flink trial=5 warmup=false rows=2000000 seconds=0.313962187", "[collection-trial] engine=flink trial=6 warmup=false rows=2000000 seconds=0.331968940", "[collection-trial] engine=native trial=6 warmup=false rows=2000000 seconds=0.320809613" ] } ] }