slinkydeveloper commented on a change in pull request #17350:
URL: https://github.com/apache/flink/pull/17350#discussion_r716431275



##########
File path: 
flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/filesystem/AbstractFileSystemTable.java
##########
@@ -59,15 +68,19 @@ ReadableConfig formatOptions(String identifier) {
         return new DelegatingConfiguration(tableOptions, identifier + ".");
     }
 
-    DataType getFormatDataType() {
-        TableSchema.Builder builder = TableSchema.builder();
-        schema.getTableColumns()
-                .forEach(
-                        column -> {
-                            if (!partitionKeys.contains(column.getName())) {
-                                builder.add(column);
-                            }
-                        });
-        return builder.build().toRowDataType();
+    DataType getRowDataTypeWithoutPartitionColumns() {

Review comment:
       TBH I find less convoluted the committed code than extracting the info 
from `getRowDataType()`:
   
   ```java
   FieldsDataType fieldsDataType = (FieldsDataType) getRowDataType();
   RowType rowType = (RowType) getRowDataType().getLogicalType();
   return ROW(
           IntStream.range(0, rowType.getFieldCount())
                   .filter(i -> 
!partitionKeys.contains(rowType.getFieldNames().get(i)))
                   .mapToObj(i -> 
DataTypes.FIELD(rowType.getFieldNames().get(i), 
fieldsDataType.getChildren().get(i)))
                   .toArray(DataTypes.Field[]::new)
   );
   ```
   
   Same for the comment in `DeserializationSchemaAdapter`.




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