nssalian commented on code in PR #2002:
URL: https://github.com/apache/iceberg-go/pull/2002#discussion_r4051825834


##########
table/arrow_utils.go:
##########
@@ -436,7 +436,7 @@ func (c convertToIceberg) Primitive(dt arrow.DataType) 
(result iceberg.NestedFie
                switch dt.ExtensionName() {
                case "arrow.uuid":
                        result.Type = iceberg.PrimitiveTypes.UUID
-               case "parquet.variant":
+               case extensions.VariantExtensionName, 
extensions.LegacyVariantExtensionName:

Review Comment:
   Since there's no `CHANGELOG.md` in the repo, so I added the compatibility 
note to the PR description: files written with the canonical 
`arrow.parquet.variant` name read fine in Java/pqarrow/iceberg-rust; only older 
iceberg-go readers (matching just `parquet.variant`) in a mixed-version fleet 
are affected, and both names are accepted on read. We should make this a note 
in the release notes too



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