{
  "schema_version": 1,
  "date": "2026-10-21",
  "feature": "Ordered retracting floating and wide-decimal two-phase DISTINCT",
  "base_commit": "da73afcc",
  "native_dso_sha256": "9b95644bb242c93ce0d1d6ca567123280d3923954a690052676f73e6b164b391",
  "source_sha256": {
    "native/engine/src/group_agg.rs": "eac5a61962202be5d21a0ad63f378a931c797785d8e62dd0c66d028c6e89d8f9",
    "native/engine/src/group_agg/java_map_order.rs": "8c219fd47c8e724e9523081f2af476416d55c78dcc19bfc40e8daf1a9832de3c",
    "native/engine/src/group_agg/decimal_map_order.rs": "2c66c1502e3825ec832e4bab399e2ffb3405a32f84984e93a78b21c8db1ae13a",
    "native/engine/src/group_agg/numeric_map_order.rs": "3fbd0e4c6fe58dce7594cfe955967fe5796d8b7bf6ca38e6fcb81f1975c70a48",
    "native/engine/src/group_agg/distinct.rs": "221831b5b1f6fbdcdc82280c3b108ec5552acefce4201d15a2c2e0aa94f4b015",
    "src/main/java/tech/streamfusion/planner/LocalGroupAggregateMatcher.java": "f2fef25a32d97c1ed6dbbe6a63cff96e9aea6fa9efd46abbc1b234fd77f5854c",
    "src/main/java/tech/streamfusion/planner/GlobalGroupAggregateMatcher.java": "3ea92163b1a2f0b0176d20a77152838566772450b593353858a06b130876f60b",
    "src/test/java/tech/streamfusion/FlinkRetractingOrderedDistinctSqlHarnessTest.java": "4f8f4b87c149a78d7ff44e05cebea1c44a4a0f4ecd3a8d3056bb056cf5344bbc",
    "src/test/resources/java-map-removal-order.json": "b58a31a7b52859596ef91f145efebc730454167d6d878e030401f3b8d9c7f434"
  },
  "source_note": "Source hashes describe the final source; a stale documentation comment was corrected after building the measured DSO. Executable code is identical.",
  "configuration": {
    "runtime": "Linux x86_64; JDK 17; release+mimalloc",
    "rows": 1000000,
    "parallelism": 1,
    "heap": "2 GiB",
    "backend": "memory",
    "inner_keys": 128,
    "outer_keys": 16,
    "mini_batch_rows": 512,
    "mini_batch_latency": "1 h",
    "null_every": 7,
    "warmups": 2,
    "measured_trials": 3,
    "query": "SELECT u,SUM(DISTINCT mx),COUNT(DISTINCT mx),AVG(DISTINCT mx),SUM(DISTINCT mx) FILTER(WHERE mx>0) FROM (SELECT k,u,MAX(CAST(v AS <type>)) mx FROM src GROUP BY k,u) GROUP BY u",
    "boundary": "Conversion-inclusive complete jobs retain rowwise source/sink, both transposes, JNI and production local/global state. Planning excluded. Benchmarks run alone.",
    "previous_control": "Actual canonical d13e9dc4 Java planner/runtime, unchanged benchmark already compiled, same compatible candidate DSO, affected native aggregate route asserted absent."
  },
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  "validation": {
    "sql_checks_per_line": 89,
    "native_passed": 836,
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    "jdk_map_mutations": 592,
    "adversarial_profiles": 16,
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    "released_host_limits": [
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      "artifact": "Unmodified canonical Maven Central released flink-table-planner_2.12 tests JAR, own runtime dependencies and existing injection agent; no test sources rewritten.",
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          "org.apache.flink.table.planner.runtime.stream.sql.AggregateITCase#testDistinctWithMultiFilter\taggMode=ON\tNativeCalcOperator=21,NativeColumnarGroupAggregateOperator=10,NativeColumnarLocalGroupAggregateOperator=21",
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          "org.apache.flink.table.planner.runtime.stream.sql.AggregateITCase#testDistinctWithMultiFilter\tchangelog=false&aggMode=ON\tNativeCalcOperator=21,NativeColumnarGroupAggregateOperator=10,NativeColumnarLocalGroupAggregateOperator=21",
          "org.apache.flink.table.planner.runtime.stream.sql.AggregateITCase#testDistinctWithMultiFilter\tchangelog=false&aggMode=OFF\tNativeCalcOperator=21,NativeColumnarGroupAggregateOperator=21",
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  "performance_optimization_passes": 0,
  "performance_note": "All eight candidate profiles beat stock Flink; no slow-case profiling/optimization passes were needed. Bounded correctness investigation used a temporary ByteBuddy trace and actual JDK replay to identify that released multi-counter DISTINCT merge retains zero-count keys. No diagnostic agent is shipped."
}