yujun777 commented on code in PR #69896:
URL: https://github.com/apache/doris/pull/69896#discussion_r4462701422


##########
be/src/storage/task/engine_publish_version_task.cpp:
##########
@@ -317,6 +335,10 @@ Status EnginePublishVersionTask::execute() {
             }
         }
     }
+    for (const RowsetSharedPtr& changelog_rowset : attached_changelog_rowsets) 
{
+        const RowsetMetaSharedPtr& rowset_meta = 
changelog_rowset->rowset_meta();
+        tablet_id_to_num_delta_rows.insert({rowset_meta->tablet_id(), 
rowset_meta->num_rows()});

Review Comment:
   Changelog has not been officially released yet, and there are no changelog 
tablets in production. Therefore, the rolling-upgrade compatibility scenario 
described here does not arise. Compatibility between unreleased changelog 
implementations is outside the scope of this PR.



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