{
  "boundary": "Stock released KeySelectorUtil key projection plus BinaryRowData.hashCode on prepared BinaryRowData in Java; production flink_key_hashes on prepared Arrow batches inside Rust. Both consume a sum of hashes. Setup, initial Arrow import, export and JNI excluded. This isolates key materialization and routing; it does not measure aggregate/join execution or whole jobs.",
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      "ranges": {
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  "jdk": "17.0.20.1+1-1-22.04-Ubuntu",
  "jvm_max_heap": "2g",
  "native_build": "release + mimalloc",
  "parallelism": "single runtime thread per measured operation",
  "nulls": "every eleventh row",
  "legacy_baseline": "Actual d0f24f44 matcher tested with new SQL fixture: all 48 selected queries keep the requested operation on Flink; 1.18.1 control.",
  "parity": {
    "flink22": "216 SQL/recovery plus 8 non-time ROW_NUMBER cases, all pass",
    "flink118": "216 SQL/recovery, all pass; non-time OVER unavailable in released host",
    "criterion": "144 scalar_partition_keys fixtures pass",
    "legacy_binary_transport": "Explicitly disabling both raw-binary transport flags retains stock BINARY key execution on both released Flink lines",
    "integration_controls22": "100 OVER SUM0 SQL/recovery + 7 binary ELT + 1 JVM aggregate parity checks pass with the combined release library"
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  "previous_head": "d0f24f44",
  "sources": {
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}