disq commented on code in PR #34631:
URL: https://github.com/apache/arrow/pull/34631#discussion_r1163132146
##########
go/parquet/pqarrow/schema.go:
##########
@@ -1043,6 +1066,26 @@ func applyOriginalStorageMetadata(origin arrow.Field,
inferred *SchemaField) (mo
final[k] = inferred.Field.Metadata.Values()[idx]
}
inferred.Field.Metadata = arrow.MetadataFrom(final)
+
+ if extName, ok := final[ipc.ExtensionTypeKeyName]; ok {
+ if extMeta, ok :=
final[ipc.ExtensionMetadataKeyName]; ok {
+ ext := arrow.GetExtensionType(extName)
+ if ext != nil {
+ dd, err2 :=
ext.Deserialize(inferred.Field.Type, extMeta)
+ if err2 != nil {
+ err = err2
+ return
+ }
+ inferred.Field.Type = dd
+ } else {
+ // We'll be here if the
extension isn't registered.
+ // Optional? maybe skip this
error and leave the type as is?
Review Comment:
@zeroshade OK we don't error any more, also added a test to verify this
case. Tests should hopefully pass now.
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