wgtmac commented on code in PR #39491:
URL: https://github.com/apache/arrow/pull/39491#discussion_r1445571136
##########
cpp/src/parquet/arrow/schema_internal.cc:
##########
@@ -90,7 +90,7 @@ Result<std::shared_ptr<ArrowType>> MakeArrowTime64(const
LogicalType& logical_ty
Result<std::shared_ptr<ArrowType>> MakeArrowTimestamp(const LogicalType&
logical_type) {
const auto& timestamp = checked_cast<const
TimestampLogicalType&>(logical_type);
const bool utc_normalized =
- timestamp.is_from_converted_type() ? false :
timestamp.is_adjusted_to_utc();
+ timestamp.is_from_converted_type() ? true :
timestamp.is_adjusted_to_utc();
Review Comment:
> Here, every caller except here is set to true. See:
https://github.com/apache/arrow/blob/main/cpp/src/parquet/schema.cc#L443
>
> By the way, I didn't find Int96 in the doc, would Int96 should having
`is_adjusted_to_utc = true` ? (Rust impl set it false)
IMO, INT96 is a physical type and orthogonal to logical/converted type.
##########
cpp/src/parquet/types.cc:
##########
@@ -345,15 +345,19 @@ std::shared_ptr<const LogicalType>
LogicalType::FromConvertedType(
case ConvertedType::DATE:
return DateLogicalType::Make();
case ConvertedType::TIME_MILLIS:
Review Comment:
It would be good to add the parity for timestamp type as well:
https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#deprecated-timestamp-convertedtype,
just in case people are looking for timestamp type only.
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