harshmotw-db commented on code in PR #7783:
URL: https://github.com/apache/arrow-rs/pull/7783#discussion_r2167845968


##########
parquet-variant/src/variant.rs:
##########
@@ -1031,6 +1033,57 @@ impl From<VariantDecimal16> for Variant<'_, '_> {
     }
 }
 
+impl TryFrom<&Number> for Variant<'_, '_> {
+    type Error = ArrowError;
+
+    fn try_from(n: &Number) -> Result<Self, Self::Error> {

Review Comment:
   Thanks for the code pointer! Do you think we could implement custom decimal 
parsing as a follow up? I think 2^96 is a good bound for now even though the 
Variant spec allows for a larger width (about 2^128).
   



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