Write projects config to all projects inside namespace in batches

app/models/concerns/storage/legacy_namespace.rb

@@ -34,7 +34,7 @@ module Storage
       # So we basically we mute exceptions in next actions
       begin
         send_update_instructions
-        write_projects_full_path_config
+        write_projects_repository_config
         true
       rescue

app/models/namespace.rb

@@ -269,8 +269,8 @@ class Namespace < ActiveRecord::Base
     RedirectRoute.permanent.exists?(path: path)
   end
-  def write_projects_full_path_config
-    all_projects.each do |project|
+  def write_projects_repository_config
+    all_projects.find_each do |project|
       project.expires_full_path_cache # we need to clear cache to validate renames correctly
       project.write_repository_config
     end