twalthr commented on code in PR #27674:
URL: https://github.com/apache/flink/pull/27674#discussion_r2853446828


##########
flink-table/flink-table-common/src/main/java/org/apache/flink/types/ColumnList.java:
##########
@@ -46,15 +47,20 @@ public final class ColumnList implements Serializable {
     private final List<DataType> dataTypes;
 
     private ColumnList(List<String> names, List<DataType> dataTypes) {
-        this.names = Preconditions.checkNotNull(names, "Names must not be 
null.");
-        this.dataTypes = Preconditions.checkNotNull(dataTypes, "Data types 
must be null.");
+        Preconditions.checkNotNull(names, "Names must not be null.");

Review Comment:
   This is not a requirement for DESCRIPTOR as far as I know



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