smjn commented on code in PR #19478:
URL: https://github.com/apache/kafka/pull/19478#discussion_r2046242342


##########
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/GroupCoordinatorService.java:
##########
@@ -1257,38 +1257,103 @@ private CompletableFuture<Map<String, Errors>> 
persisterDeleteToGroupIdErrorMap(
         });
     }
 
-    private CompletableFuture<DeleteShareGroupOffsetsResponseData> 
persistDeleteShareGroupOffsets(
-        DeleteShareGroupStateParameters deleteStateRequestParameters,
-        
List<DeleteShareGroupOffsetsResponseData.DeleteShareGroupOffsetsResponseTopic> 
errorTopicResponseList
+    private CompletableFuture<DeleteShareGroupOffsetsResponseData> 
completeDeleteShareGroupOffsets(
+        String groupId,
+        Map<Uuid, String> successTopics,
+        
List<DeleteShareGroupOffsetsResponseData.DeleteShareGroupOffsetsResponseTopic> 
errorTopicResponses
     ) {
-        return persister.deleteState(deleteStateRequestParameters)
-            .thenCompose(result -> {
-                if (result == null || result.topicsData() == null) {
-                    log.error("Result is null for the delete share group 
state");
-                    Exception exception = new IllegalStateException("Result is 
null for the delete share group state");
-                    return CompletableFuture.completedFuture(
-                        
DeleteShareGroupOffsetsRequest.getErrorDeleteResponseData(Errors.forException(exception))
-                    );
-                }
-                result.topicsData().forEach(topicData ->
-                    errorTopicResponseList.add(
-                        new 
DeleteShareGroupOffsetsResponseData.DeleteShareGroupOffsetsResponseTopic()
-                            .setTopicId(topicData.topicId())
-                            
.setTopicName(metadataImage.topics().topicIdToNameView().get(topicData.topicId()))
-                            .setPartitions(topicData.partitions().stream().map(
-                                partitionData -> new 
DeleteShareGroupOffsetsResponseData.DeleteShareGroupOffsetsResponsePartition()
-                                    
.setPartitionIndex(partitionData.partition())
-                                    .setErrorMessage(partitionData.errorCode() 
== Errors.NONE.code() ? null : 
Errors.forCode(partitionData.errorCode()).message())
-                                    .setErrorCode(partitionData.errorCode())
-                            ).toList())
-                    )
-                );
+        return runtime.scheduleWriteOperation(
+            "complete-delete-share-group-offsets",
+            topicPartitionFor(groupId),
+            Duration.ofMillis(config.offsetCommitTimeoutMs()),
+            coordinator -> 
coordinator.completeDeleteShareGroupOffsets(groupId, successTopics, 
errorTopicResponses)
+        ).exceptionally(exception -> handleOperationException(
+            "complete-delete-share-group-offsets",
+            groupId,
+            exception,
+            (error, __) -> 
DeleteShareGroupOffsetsRequest.getErrorDeleteResponseData(error),
+            log
+        ));
+    }
 
-                return CompletableFuture.completedFuture(
-                    new DeleteShareGroupOffsetsResponseData()
-                        .setResponses(errorTopicResponseList)
+    private CompletableFuture<DeleteShareGroupOffsetsResponseData> 
handleDeleteShareGroupStateResult(
+        String groupId,
+        DeleteShareGroupStateResult result,
+        
List<DeleteShareGroupOffsetsResponseData.DeleteShareGroupOffsetsResponseTopic> 
errorTopicResponses
+    ) {
+        if (result == null || result.topicsData() == null) {

Review Comment:
   can this be null?



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