alamb commented on code in PR #8093:
URL: https://github.com/apache/arrow-rs/pull/8093#discussion_r2286025073
##########
parquet-variant-compute/src/variant_array.rs:
##########
@@ -251,6 +255,13 @@ pub enum ShreddingState {
value: BinaryViewArray,
typed_value: ArrayRef,
},
+ /// All values are null, only metadata is present.
+ ///
+ /// This state occurs when neither `value` nor `typed_value` fields exist
in the schema.
Review Comment:
I think this is a reasonable approach for now. If we find a reason to
restrict AllNull to only sub fields at some later point, then we can add
additional code / restrictions
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