zeroshade commented on code in PR #915:
URL: https://github.com/apache/iceberg-go/pull/915#discussion_r3275537967
##########
schema_conversions_test.go:
##########
@@ -196,3 +197,73 @@ func TestPartitionTypeToAvroSchemaDuplicateNamedTypes(t
*testing.T) {
})
}
}
+
+// TestDayTransformPartitionAvroDateEncoding verifies that a day(ts) partition
+// field is encoded with the Avro "date" logical type, not as a plain integer.
+// This is required for interoperability with Trino, Spark, and other Iceberg
+// engines that reject manifests where day-partition columns lack the date
type.
+//
+// The fix lives in PartitionSpec.PartitionType: it overrides DayTransform's
+// ResultType (Int32) to DateType so the existing DateType branch in
+// partitionTypeToAvroSchema emits DateNode automatically.
Review Comment:
@artbcf can you ensure that we can read both int and date, but only write
date?
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