rdblue commented on a change in pull request #2465:
URL: https://github.com/apache/iceberg/pull/2465#discussion_r618846426
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File path: core/src/main/java/org/apache/iceberg/SchemaUpdate.java
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@@ -408,11 +427,55 @@ private TableMetadata applyChangesToMapping(TableMetadata
metadata) {
private static Schema applyChanges(Schema schema, List<Integer> deletes,
Map<Integer, Types.NestedField> updates,
Multimap<Integer, Types.NestedField> adds,
- Multimap<Integer, Move> moves) {
+ Multimap<Integer, Move> moves,
+ Set<String> identifierNames) {
+ // validate existing identifier fields are not deleted
+ for (String name : identifierNames) {
+ Types.NestedField field = schema.findField(name);
Review comment:
I think multiple steps is right. We should not allow redefining the ID
column's ID with a delete/rename.
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