{
  "schema_version": 1,
  "date": "2026-10-21",
  "feature": "Independent retained value/order maps for ordinary retracting FIRST_VALUE/LAST_VALUE",
  "base_commit": "a448d590",
  "measured_native_dso_sha256": "b1832dc7e15fa9a27b735b11b251745ac6605aefd353b6a29508938230ca729f",
  "validated_native_dso_sha256": "a2960df3ed3055c080b895db9a9121f0d3311824bc496ee3c2544bde376241d9",
  "source_sha256": {
    "native/engine/src/group_agg.rs": "dc49c7a81b68ce5c5541ad3e39f7f7314121d415216298fc04a27bef4af2cf65",
    "native/engine/src/group_agg/ordered_value.rs": "1d5197cc98c3e7b72540e0b6dfb00cd4b19be31ae9429f44ab44f3a4ba3b270e",
    "native/engine/src/group_agg/ordered_retention.rs": "29671947f6a9230fcf5e71a68a6cec7acab5bb016427e07aa39cd4eaffb439ee",
    "src/main/java/tech/streamfusion/planner/GroupAggregateMatcher.java": "efb281156ded2207d311d85d940983948dc2fecd3399ff3aa25cf3c9968d3160",
    "src/test/java/tech/streamfusion/GroupedValueBenchmark.java": "bd2ba402123f3dc2859c7001c7c97ce6986e2020cab50352d145ec38aad8c99e",
    "src/test/java/tech/streamfusion/operator/NativeOrderedValueRetentionParityTest.java": "f3a62bcc8ba153ad6c7642f4a81c631b9eef31a11d71e522522f5198802a0cdb"
  },
  "build_note": "The final build adds preservation of retained maps when TTL is disabled after restore and a clarifying hash comment. Enabled-TTL behavior in every timed profile is unchanged. Final native/unit/operator/SQL checks use the validated DSO; upstream mixed FIRST/LAST fixture uses the measured DSO.",
  "configuration": {
    "runtime": "Linux x86_64; JDK 17; release+mimalloc",
    "rows": 131072,
    "parallelism": 1,
    "heap": "2 GiB",
    "backend": "memory",
    "keys": 1024,
    "cardinality": 4096,
    "null_every": "one eighth: input id / 64 % 8 == 0",
    "changelog": "First three quarters INSERT; last quarter DELETE the identical first-quarter records.",
    "retention_ms": 3600000,
    "mini_batch": false,
    "warmups": 2,
    "measured_trials": 3,
    "query": "SELECT k,FIRST_VALUE(v),LAST_VALUE(v) FROM inputs GROUP BY k",
    "boundary": "Complete jobs: timer begins before executeSql and stops after awaited rowwise blackhole completion; planning, source, both row/Arrow transposes, JNI and aggregate state remain included. Trials alternate engine order and run alone.",
    "previous_control": "Actual canonical d13e9dc4 Java planner/runtime, same copied benchmark and compatible candidate native library; affected native aggregate route asserted absent.",
    "clock": "Native uses the existing per-Arrow-call processing clock for arrival buckets and independent TTL writes. Flink samples wall clock in its aggregate and TTL state. These retention-specific timings depend on processing-clock bucket density; they do not establish general FIRST/LAST speedups."
  },
  "measurements": [
    {
      "revision": "candidate",
      "flink_line": "2.2.1",
      "type": "BIGINT",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 3.108779
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 0.421434
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 0.226586
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 2.178532
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 2.041661
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 0.176476
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 0.159434
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 1.892317
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 2.069046
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 0.165006
        }
      ],
      "measured_seconds": {
        "Flink": [
          2.041661096,
          1.892317109,
          2.069045934
        ],
        "StreamFusion": [
          0.176475514,
          0.159433528,
          0.165005687
        ]
      },
      "median_seconds": {
        "Flink": 2.041661096,
        "StreamFusion": 0.165005687
      },
      "range_seconds": {
        "Flink": [
          1.892317109,
          2.069045934
        ],
        "StreamFusion": [
          0.159433528,
          0.176475514
        ]
      },
      "stock_over_native": 12.373277146502227
    },
    {
      "revision": "candidate",
      "flink_line": "2.2.1",
      "type": "STRING",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 2.736282
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 0.245752
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 0.224467
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 2.78556
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 2.811699
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 0.20722
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 0.218789
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 2.528769
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 2.711365
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 0.224858
        }
      ],
      "measured_seconds": {
        "Flink": [
          2.811699024,
          2.528768562,
          2.711364856
        ],
        "StreamFusion": [
          0.207219814,
          0.218788762,
          0.224858004
        ]
      },
      "median_seconds": {
        "Flink": 2.711364856,
        "StreamFusion": 0.218788762
      },
      "range_seconds": {
        "Flink": [
          2.528768562,
          2.811699024
        ],
        "StreamFusion": [
          0.207219814,
          0.224858004
        ]
      },
      "stock_over_native": 12.3926148272643
    },
    {
      "revision": "candidate",
      "flink_line": "2.2.1",
      "type": "DOUBLE",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 1.992717
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 0.180744
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 0.17923
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 2.038836
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 1.99489
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 0.15383
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 0.157982
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 2.096912
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 2.170463
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 0.168225
        }
      ],
      "measured_seconds": {
        "Flink": [
          1.994890235,
          2.096911553,
          2.170463142
        ],
        "StreamFusion": [
          0.153830155,
          0.157982407,
          0.168225114
        ]
      },
      "median_seconds": {
        "Flink": 2.096911553,
        "StreamFusion": 0.157982407
      },
      "range_seconds": {
        "Flink": [
          1.994890235,
          2.170463142
        ],
        "StreamFusion": [
          0.153830155,
          0.168225114
        ]
      },
      "stock_over_native": 13.27307003874172
    },
    {
      "revision": "candidate",
      "flink_line": "2.2.1",
      "type": "ARRAY",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 2.520803
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 0.39475
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 0.361091
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 2.575054
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 2.627419
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 0.355797
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 0.363223
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 2.618653
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 2.778544
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 0.355807
        }
      ],
      "measured_seconds": {
        "Flink": [
          2.627418545,
          2.61865285,
          2.778544283
        ],
        "StreamFusion": [
          0.355797012,
          0.36322301,
          0.355806711
        ]
      },
      "median_seconds": {
        "Flink": 2.627418545,
        "StreamFusion": 0.355806711
      },
      "range_seconds": {
        "Flink": [
          2.61865285,
          2.778544283
        ],
        "StreamFusion": [
          0.355797012,
          0.36322301
        ]
      },
      "stock_over_native": 7.384398505625713
    },
    {
      "revision": "candidate",
      "flink_line": "1.18.1",
      "type": "BIGINT",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 2.971054
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 0.394494
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 0.205553
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 2.131775
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 2.07404
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 0.175657
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 0.179538
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 2.001586
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 2.038792
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 0.171048
        }
      ],
      "measured_seconds": {
        "Flink": [
          2.074039654,
          2.001586499,
          2.038792236
        ],
        "StreamFusion": [
          0.175656867,
          0.179537603,
          0.171048253
        ]
      },
      "median_seconds": {
        "Flink": 2.038792236,
        "StreamFusion": 0.175656867
      },
      "range_seconds": {
        "Flink": [
          2.001586499,
          2.074039654
        ],
        "StreamFusion": [
          0.171048253,
          0.179537603
        ]
      },
      "stock_over_native": 11.606675394022597
    },
    {
      "revision": "candidate",
      "flink_line": "1.18.1",
      "type": "STRING",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 2.754748
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 0.244167
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 0.20469
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 2.522229
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 2.665395
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 0.216685
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 0.226649
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 2.656411
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 2.635456
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 0.207908
        }
      ],
      "measured_seconds": {
        "Flink": [
          2.665394968,
          2.656411482,
          2.635456044
        ],
        "StreamFusion": [
          0.216685412,
          0.22664883,
          0.207907856
        ]
      },
      "median_seconds": {
        "Flink": 2.656411482,
        "StreamFusion": 0.216685412
      },
      "range_seconds": {
        "Flink": [
          2.635456044,
          2.665394968
        ],
        "StreamFusion": [
          0.207907856,
          0.22664883
        ]
      },
      "stock_over_native": 12.259300049234511
    },
    {
      "revision": "candidate",
      "flink_line": "1.18.1",
      "type": "DOUBLE",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 2.030584
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 0.174104
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 0.167965
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 1.963852
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 2.26273
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 0.158286
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 0.16424
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 2.052883
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 2.007629
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 0.1574
        }
      ],
      "measured_seconds": {
        "Flink": [
          2.262729762,
          2.052882508,
          2.007629164
        ],
        "StreamFusion": [
          0.158286153,
          0.164239982,
          0.157400125
        ]
      },
      "median_seconds": {
        "Flink": 2.052882508,
        "StreamFusion": 0.158286153
      },
      "range_seconds": {
        "Flink": [
          2.007629164,
          2.262729762
        ],
        "StreamFusion": [
          0.157400125,
          0.164239982
        ]
      },
      "stock_over_native": 12.969438381637843
    },
    {
      "revision": "d13e9dc4 planner fallback",
      "flink_line": "2.2.1",
      "type": "BIGINT",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 3.009765
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 2.219698
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 2.083423
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 1.973865
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 1.884479
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 1.983531
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 1.935114
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 1.907648
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 2.005492
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 1.974846
        }
      ],
      "measured_seconds": {
        "Flink": [
          1.884479427,
          1.907648218,
          2.005492033
        ],
        "StreamFusion": [
          1.983530637,
          1.935114036,
          1.974845564
        ]
      },
      "median_seconds": {
        "Flink": 1.907648218,
        "StreamFusion": 1.974845564
      },
      "range_seconds": {
        "Flink": [
          1.884479427,
          2.005492033
        ],
        "StreamFusion": [
          1.935114036,
          1.983530637
        ]
      },
      "stock_over_native": 0.9659733666140995
    },
    {
      "revision": "d13e9dc4 planner fallback",
      "flink_line": "2.2.1",
      "type": "STRING",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 2.698369
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 2.556504
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 2.636543
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 2.488084
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 2.807778
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 2.698255
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 2.514852
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 2.510366
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 2.674764
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 2.612
        }
      ],
      "measured_seconds": {
        "Flink": [
          2.807777649,
          2.510365616,
          2.674763907
        ],
        "StreamFusion": [
          2.698254875,
          2.514851858,
          2.612000289
        ]
      },
      "median_seconds": {
        "Flink": 2.674763907,
        "StreamFusion": 2.612000289
      },
      "range_seconds": {
        "Flink": [
          2.510365616,
          2.807777649
        ],
        "StreamFusion": [
          2.514851858,
          2.698254875
        ]
      },
      "stock_over_native": 1.0240289475710698
    },
    {
      "revision": "d13e9dc4 planner fallback",
      "flink_line": "2.2.1",
      "type": "DOUBLE",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 2.011744
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 2.015741
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 2.036285
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 2.059315
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 1.984536
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 1.968293
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 2.047666
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 1.99495
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 1.977861
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 2.080248
        }
      ],
      "measured_seconds": {
        "Flink": [
          1.984535939,
          1.99494999,
          1.977860921
        ],
        "StreamFusion": [
          1.968293275,
          2.047665521,
          2.080248244
        ]
      },
      "median_seconds": {
        "Flink": 1.984535939,
        "StreamFusion": 2.047665521
      },
      "range_seconds": {
        "Flink": [
          1.977860921,
          1.99494999
        ],
        "StreamFusion": [
          1.968293275,
          2.080248244
        ]
      },
      "stock_over_native": 0.9691699736345759
    },
    {
      "revision": "d13e9dc4 planner fallback",
      "flink_line": "2.2.1",
      "type": "ARRAY",
      "trials": [
        {
          "engine": "Flink",
          "trial": 0,
          "warmup": true,
          "seconds": 2.500912
        },
        {
          "engine": "StreamFusion",
          "trial": 0,
          "warmup": true,
          "seconds": 2.553204
        },
        {
          "engine": "StreamFusion",
          "trial": 1,
          "warmup": true,
          "seconds": 2.57199
        },
        {
          "engine": "Flink",
          "trial": 1,
          "warmup": true,
          "seconds": 2.694615
        },
        {
          "engine": "Flink",
          "trial": 2,
          "warmup": false,
          "seconds": 2.663821
        },
        {
          "engine": "StreamFusion",
          "trial": 2,
          "warmup": false,
          "seconds": 2.941712
        },
        {
          "engine": "StreamFusion",
          "trial": 3,
          "warmup": false,
          "seconds": 2.700603
        },
        {
          "engine": "Flink",
          "trial": 3,
          "warmup": false,
          "seconds": 2.708217
        },
        {
          "engine": "Flink",
          "trial": 4,
          "warmup": false,
          "seconds": 2.494618
        },
        {
          "engine": "StreamFusion",
          "trial": 4,
          "warmup": false,
          "seconds": 2.578031
        }
      ],
      "measured_seconds": {
        "Flink": [
          2.663820599,
          2.708216759,
          2.49461829
        ],
        "StreamFusion": [
          2.941712132,
          2.700603232,
          2.578030743
        ]
      },
      "median_seconds": {
        "Flink": 2.663820599,
        "StreamFusion": 2.700603232
      },
      "range_seconds": {
        "Flink": [
          2.49461829,
          2.708216759
        ],
        "StreamFusion": [
          2.578030743,
          2.941712132
        ]
      },
      "stock_over_native": 0.9863798455974002
    }
  ],
  "validation": {
    "native_passed": 839,
    "native_ignored": 2,
    "controlled_operator_checks_per_release": 16,
    "controlled_types": [
      "BIGINT",
      "STRING"
    ],
    "controlled_dimensions": [
      "immediate/mini-batch",
      "memory/native RocksDB",
      "two successive restores",
      "expired value map with stale cached selection",
      "expired order bucket with retained value orders",
      "NULL group refresh",
      "inclusive whole-group expiry"
    ],
    "new_typed_sql_profiles": 13,
    "new_typed_sql_phase_choices": 2,
    "flink118_unavailable_typed_profiles": 4,
    "new_complex_sql_profiles": 18,
    "new_complex_recovery_profiles": 8,
    "flink118_complex": "18 released factory rejections; eight recovery cases skipped because released factories do not exist.",
    "broad_suite": {
      "2.2.1": {
        "passed": 272,
        "skipped": 0
      },
      "1.18.1": {
        "passed": 212,
        "skipped": 60
      }
    },
    "broad_suite_note": "Complex grouped SQL (110), controlled operator retention (16), and grouped state/recovery (10) pass together; scalar/grouped SQL (136) was rerun after updating the two obsolete fallback expectations to require native work. Its Flink 1.18 run skips 40 existing host-capability cases. Actual TTL-hint queries now require consumed native work.",
    "unchanged_upstream": {
      "method": "org.apache.flink.table.planner.runtime.stream.table.AggregateITCase#testGroupAggregateWithExpression",
      "artifact": "Unchanged canonical Maven Central released planner tests JAR with production StreamFusion classes and existing suite agent; no upstream sources rewritten.",
      "invocations_per_release": 2,
      "consumed_native_reports": {
        "2.2": [
          "org.apache.flink.table.planner.runtime.stream.table.AggregateITCase#testGroupAggregateWithExpression\t*\tNativeCalcOperator=37,NativeColumnarGroupAggregateOperator=15",
          "org.apache.flink.table.planner.runtime.stream.table.AggregateITCase#testGroupAggregateWithExpression\t*\tNativeCalcOperator=37,NativeColumnarGroupAggregateOperator=15"
        ],
        "1.18": [
          "org.apache.flink.table.planner.runtime.stream.table.AggregateITCase#testGroupAggregateWithExpression\tchangelog=false\tNativeCalcOperator=37,NativeColumnarGroupAggregateOperator=15",
          "org.apache.flink.table.planner.runtime.stream.table.AggregateITCase#testGroupAggregateWithExpression\tchangelog=false\tNativeCalcOperator=37,NativeColumnarGroupAggregateOperator=15"
        ]
      },
      "note": "This mixed append FIRST/LAST/LISTAGG fixture protects common aggregate integration. The focused controlled-clock tests establish the new retracting TTL behavior. The first 1.18 launcher attempt lacked the released Scala API JAR; adding that dependency resolved it."
    }
  },
  "aborted_stock_warmup": {
    "rows": 1000000,
    "keys": 64,
    "cardinality": 1024,
    "type": "BIGINT",
    "retention_ms": 3600000,
    "measured_trials": 0,
    "excluded_from_comparisons": true,
    "reason": "The first stock warmup exceeded 80 seconds in the released FIRST_VALUE retraction map scan. Captured its task stack and terminated the diagnostic run; both engines were then matched at the smaller, more numerous-group configuration.",
    "captured_stack": [
      "\"GroupAggregate[9] -> sink[10]: Writer (1/1)#0\" #135 prio=5 os_prio=0 cpu=73519.75ms elapsed=82.62s tid=0x0000765b7c058090 nid=0x25893e runnable  [0x0000765af3bfb000]",
      "   java.lang.Thread.State: RUNNABLE",
      "\tat org.apache.flink.table.runtime.functions.aggregate.FirstValueWithRetractAggFunction.retract(FirstValueWithRetractAggFunction.java:218)",
      "\tat org.apache.flink.table.runtime.functions.aggregate.FirstValueWithRetractAggFunction.retract(FirstValueWithRetractAggFunction.java:185)",
      "\tat GroupAggsHandler$28.retract(Unknown Source)",
      "\tat org.apache.flink.table.runtime.operators.aggregate.utils.GroupAggHelper.processElement(GroupAggHelper.java:96)",
      "\tat org.apache.flink.table.runtime.operators.aggregate.GroupAggFunction.processElement(GroupAggFunction.java:88)",
      "\tat org.apache.flink.table.runtime.operators.aggregate.GroupAggFunction.processElement(GroupAggFunction.java:33)",
      "\tat org.apache.flink.streaming.api.operators.KeyedProcessOperator.processElement(KeyedProcessOperator.java:87)",
      "\tat org.apache.flink.streaming.runtime.io.RecordProcessorUtils.lambda$getRecordProcessor$0(RecordProcessorUtils.java:64)",
      "\tat org.apache.flink.streaming.runtime.io.RecordProcessorUtils$$Lambda$3442/0x0000765cc4ec4d58.accept(Unknown Source)",
      "\tat org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitRecord(OneInputStreamTask.java:247)",
      "\tat org.apache.flink.streaming.runtime.io.AbstractStreamTaskNetworkInput.processElement(AbstractStreamTaskNetworkInput.java:206)",
      "\tat org.apache.flink.streaming.runtime.io.AbstractStreamTaskNetworkInput.emitNext(AbstractStreamTaskNetworkInput.java:163)",
      "\tat org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:65)",
      "\tat org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:646)"
    ]
  },
  "performance_optimization_passes": 0,
  "performance_note": "All seven valid candidate type/release profiles beat stock Flink. No slow native gate or measured optimization passes were required; no performance-only opt-in was added. ARRAY factory exists only on Flink 2.2."
}