[GitHub] [kafka] guozhangwang commented on a change in pull request #10609: KAFKA-12648: Pt. 1 - Add NamedTopology to protocol and state directory structure

[GitBox <gi...@apache.org>]

guozhangwang commented on a change in pull request #10609:
URL: https://github.com/apache/kafka/pull/10609#discussion_r644343550



##########
File path: streams/src/main/java/org/apache/kafka/streams/processor/internals/assignment/SubscriptionInfo.java
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@@ -125,6 +130,29 @@ public int errorCode() {
         return data.errorCode();
     }
 
+    // For version > MIN_NAMED_TOPOLOGY_VERSION
+    private void setTaskOffsetSumDataWithNamedTopologiesFromTaskOffsetSumMap(final Map<TaskId, Long> taskOffsetSums) {
+        final Map<Integer, List<SubscriptionInfoData.PartitionToOffsetSum>> topicGroupIdToPartitionOffsetSum = new HashMap<>();
+        for (final Map.Entry<TaskId, Long> taskEntry : taskOffsetSums.entrySet()) {
+            final TaskId task = taskEntry.getKey();
+            topicGroupIdToPartitionOffsetSum.computeIfAbsent(task.topicGroupId, t -> new ArrayList<>()).add(
+                    new SubscriptionInfoData.PartitionToOffsetSum()
+                            .setPartition(task.partition)
+                            .setOffsetSum(taskEntry.getValue()));
+        }
+
+        data.setTaskOffsetSums(taskOffsetSums.entrySet().stream().map(t -> {
+            final SubscriptionInfoData.TaskOffsetSum taskOffsetSum = new SubscriptionInfoData.TaskOffsetSum();
+            final TaskId task = t.getKey();
+            taskOffsetSum.setTopicGroupId(task.topicGroupId);
+            taskOffsetSum.setPartition(task.partition);

Review comment:
       Thanks for the explanation!




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