AndrewJSchofield commented on code in PR #20049:
URL: https://github.com/apache/kafka/pull/20049#discussion_r2194455413


##########
clients/src/main/java/org/apache/kafka/clients/admin/internals/AlterShareGroupOffsetsHandler.java:
##########
@@ -87,30 +92,38 @@ public String apiName() {
     }
 
     @Override
-    public ApiResult<CoordinatorKey, Map<TopicPartition, Errors>> 
handleResponse(Node broker, Set<CoordinatorKey> keys, AbstractResponse 
abstractResponse) {
+    public ApiResult<CoordinatorKey, Map<TopicPartition, ApiException>> 
handleResponse(Node broker, Set<CoordinatorKey> keys, AbstractResponse 
abstractResponse) {
+        validateKeys(keys);
+
         AlterShareGroupOffsetsResponse response = 
(AlterShareGroupOffsetsResponse) abstractResponse;
-        final Map<TopicPartition, Errors> partitionResults = new HashMap<>();
         final Set<CoordinatorKey> groupsToUnmap = new HashSet<>();
         final Set<CoordinatorKey> groupsToRetry = new HashSet<>();
-
-        for 
(AlterShareGroupOffsetsResponseData.AlterShareGroupOffsetsResponseTopic topic : 
response.data().responses()) {
-            for 
(AlterShareGroupOffsetsResponseData.AlterShareGroupOffsetsResponsePartition 
partition : topic.partitions()) {
-                TopicPartition topicPartition = new 
TopicPartition(topic.topicName(), partition.partitionIndex());
-                Errors error = Errors.forCode(partition.errorCode());
-
-                if (error != Errors.NONE) {
-                    handleError(
-                        groupId,
-                        topicPartition,
-                        error,
-                        partitionResults,
-                        groupsToUnmap,
-                        groupsToRetry
-                    );
-                } else {
-                    partitionResults.put(topicPartition, error);
+        final Map<TopicPartition, ApiException> partitionResults = new 
HashMap<>();
+
+        if (response.data().errorCode() != Errors.NONE.code()) {
+            final Errors topLevelError = 
Errors.forCode(response.data().errorCode());
+            final String topLevelErrorMessage = response.data().errorMessage();
+
+            offsets.forEach((topicPartition, offset) ->
+                handleError(
+                    groupId,
+                    topicPartition,
+                    topLevelError,
+                    topLevelErrorMessage,
+                    partitionResults,
+                    groupsToUnmap,
+                    groupsToRetry
+                ));
+        } else {
+            response.data().responses().forEach(topic -> 
topic.partitions().forEach(partition -> {
+                if (partition.errorCode() != Errors.NONE.code()) {
+                    final Errors partitionError = 
Errors.forCode(partition.errorCode());

Review Comment:
   Thanks @chia7712 . I'll put in a minor PR today.



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