jackye1995 commented on a change in pull request #2354:
URL: https://github.com/apache/iceberg/pull/2354#discussion_r606003885



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File path: core/src/main/java/org/apache/iceberg/TableMetadata.java
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@@ -482,6 +506,7 @@ public TableMetadata updateSchema(Schema newSchema, int 
newLastColumnId) {
     // rebuild all of the partition specs and sort orders for the new current 
schema
     List<PartitionSpec> updatedSpecs = Lists.transform(specs, spec -> 
updateSpecSchema(newSchema, spec));
     List<SortOrder> updatedSortOrders = Lists.transform(sortOrders, order -> 
updateSortOrderSchema(newSchema, order));
+    RowKey updatedRowKey = updateRowKeySchema(newSchema, rowKey);

Review comment:
       I was thinking about the following: 1 PR for the update related changes 
including update row key API, implementation, and this fix in schema update; 
1PR for work in Spark for SQL extension; 1PR in Flink for primary key clause 
(if no one did it yet)




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