jolshan commented on code in PR #16443:
URL: https://github.com/apache/kafka/pull/16443#discussion_r1776131479


##########
clients/src/main/java/org/apache/kafka/common/requests/UpdateFeaturesResponse.java:
##########
@@ -82,17 +84,31 @@ public static UpdateFeaturesResponse parse(ByteBuffer 
buffer, short version) {
         return new UpdateFeaturesResponse(new UpdateFeaturesResponseData(new 
ByteBufferAccessor(buffer), version));
     }
 
-    public static UpdateFeaturesResponse createWithErrors(ApiError 
topLevelError, Map<String, ApiError> updateErrors, int throttleTimeMs) {
+    public static UpdateFeaturesResponse createWithErrors(short version, 
ApiError topLevelError, Map<String, ApiError> updateErrors, int throttleTimeMs) 
{
         final UpdatableFeatureResultCollection results = new 
UpdatableFeatureResultCollection();
-        for (final Map.Entry<String, ApiError> updateError : 
updateErrors.entrySet()) {
-            final String feature = updateError.getKey();
-            final ApiError error = updateError.getValue();
-            final UpdatableFeatureResult result = new UpdatableFeatureResult();
-            result.setFeature(feature)
-                .setErrorCode(error.error().code())
-                .setErrorMessage(error.message());
-            results.add(result);
+        Optional<Map.Entry<String, ApiError>> errorEntry = Optional.empty();
+        if (version > 1) {
+            Stream<Map.Entry<String, ApiError>> errorEntries = 
updateErrors.entrySet().stream().filter(entry ->

Review Comment:
   An alternative is to just remove the ability to pass in a collection of 
updates.



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