Rename FillFileStoreUpload to FillStoreUpload

db/post_migrate/20180424151928_fill_file_store.rb

@@ -28,10 +28,11 @@ class FillFileStore < ActiveRecord::Migration
   class Upload < ActiveRecord::Base
     include EachBatch
     self.table_name = 'uploads'
+    self.inheritance_column = :_type_disabled # Disable STI
     BATCH_SIZE = 10_000
 
     def self.params_for_background_migration
-      yield self.where(store: nil), 'FillFileStoreUpload', 5.minutes, BATCH_SIZE
+      yield self.where(store: nil), 'FillStoreUpload', 5.minutes, BATCH_SIZE
     end
   end
 

lib/gitlab/background_migration/fill_file_store_upload.rb → lib/gitlab/background_migration/fill_store_upload.rb

@@ -4,14 +4,14 @@
 
 module Gitlab
   module BackgroundMigration
-    class FillFileStoreUpload
+    class FillStoreUpload
       class Upload < ActiveRecord::Base
         self.table_name = 'uploads'
         self.inheritance_column = :_type_disabled
       end
 
       def perform(start_id, stop_id)
-        Gitlab::BackgroundMigration::FillFileStoreUpload::Upload
+        Gitlab::BackgroundMigration::FillStoreUpload::Upload
           .where('store is NULL')
           .where(id: (start_id..stop_id))
           .update_all(store: 1)