tustvold commented on code in PR #3769:
URL: https://github.com/apache/arrow-rs/pull/3769#discussion_r1119119307
##########
arrow-data/src/data/types.rs:
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@@ -141,7 +140,7 @@ impl From<&DataType> for PhysicalType {
DataType::UInt64 =>
Self::Dictionary(DictionaryKeyType::UInt64),
d => panic!("illegal dictionary key data type {d}"),
},
- DataType::Map(_, _) => Self::Map,
+ DataType::Map(_, _) => Self::List(OffsetType::Int32),
Review Comment:
MapArray is just a logical type over ListArray
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