LadyForest commented on code in PR #21554:
URL: https://github.com/apache/flink/pull/21554#discussion_r1057409885


##########
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/operations/SqlToOperationConverter.java:
##########
@@ -595,10 +596,16 @@ private Operation convertAlterTableOptions(
                     new CatalogPartitionImpl(newProps, 
catalogPartition.getComment()));
         } else {
             // it's altering a table
-            Map<String, String> newOptions = new 
HashMap<>(oldTable.getOptions());
-            newOptions.putAll(
-                    
OperationConverterUtils.extractProperties(alterTableOptions.getPropertyList()));
-            return new AlterTableOptionsOperation(tableIdentifier, 
oldTable.copy(newOptions));
+            Map<String, String> newOptions =

Review Comment:
   Nit: the naming of `newOptions` and `allOptions` is a little confusing. What 
about `changeOptions` and `newOptions`?



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