{
  "date": "2026-11-03",
  "base": "5d628b6a053442ed2d186d882eff57a7093c1b3e",
  "prior_encoder": "e7b2a8e4294a831e8554b486767e9a7c6a0a5916",
  "comparison": "Actual preceding encoder, independently compiled on the same current release runtime, fixture and allocator; not an entire historical DSO replay.",
  "build": "release --no-default-features --features mimalloc",
  "allocator": "Prepared CountingAllocator wraps System; malloc and mi_malloc have identical Mach-O addresses in both executable and JNI DSO (mimalloc-linked).",
  "platform": "Apple M4 Pro, macOS arm64, one thread",
  "jdk": "17.0.12",
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    "warmups": 16,
    "trials": 9,
    "input": "Equal prepared GenericRowData, BinaryRowData and Arrow values, nullable/NOT NULL, TIMESTAMP_LTZ(3/9), signed-long extrema and normal/pre-epoch values; submillisecond nanos when declared.",
    "timer": "Rust after Arrow import and before output export; production operation, result consumption and intrinsic prior JVM callbacks remain timed. Stock starts on prepared RowData.",
    "consumer": "YEAR(CEIL(v TO unit))>0 OR CAST(NULL AS BOOLEAN); not timestamp output serialization throughput.",
    "stock_controls": "Candidate flink and independent prior-stock remain distinct.",
    "scope": "DAY/HOUR both released lines; MINUTE/SECOND/MILLISECOND only 2.2. Released 1.18 fails code generation for the latter three.",
    "pipeline": "Million-row existing row source and blackhole, UTC, LTZ(3/9), 2 warmups, 5 trials, alternating engine order; startup, JNI and both transposes retained."
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  "limitations": [
    "All fourteen tiny cells lose to stock.",
    "Complete native/stock elapsed range 1.098-1.213; independent stock controls and every trial retained.",
    "Computed inputs, nonzero/regional zones and other units retain their routes. Released 1.18 sub-hour LTZ forms retain code-generation failure. No broad completion of #504 is claimed."
  ]
}
