mxm commented on code in PR #14729:
URL: https://github.com/apache/iceberg/pull/14729#discussion_r2581105249
##########
flink/v2.1/flink/src/main/java/org/apache/iceberg/flink/sink/dynamic/EvolveSchemaVisitor.java:
##########
@@ -89,14 +91,23 @@ public Boolean struct(Types.StructType struct, Integer
partnerId, List<Boolean>
Types.StructType partnerStruct = findFieldType(partnerId).asStructType();
String after = null;
for (Types.NestedField targetField : struct.fields()) {
- Types.NestedField nestedField = partnerStruct.field(targetField.name());
+ Types.NestedField nestedField =
+ caseSensitive
+ ? partnerStruct.field(targetField.name())
+ : partnerStruct.caseInsensitiveField(targetField.name());
final String columnName;
if (nestedField != null) {
updateColumn(nestedField, targetField);
columnName = this.existingSchema.findColumnName(nestedField.fieldId());
} else {
addColumn(partnerId, targetField);
- columnName = this.targetSchema.findColumnName(targetField.fieldId());
+ // We need to lookup the proper parent name because the letter case
might be different on
+ // table vs target parent field (e.g. struct1.FIELD2 vs
STRUCT1.STRUCT2). This is actually a
+ // bug in SchemaUpdate#moveAfter(columnName, after) because added
fields are case-sensitive,
+ // even if case sensitivity is disabled on the API.
Review Comment:
Fix here: https://github.com/apache/iceberg/pull/14734
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