1 files changed, 26 insertions, 0 deletions
diff --git a/db/migrate/20170912113435_clean_stages_statuses_migration.rb b/db/migrate/20170912113435_clean_stages_statuses_migration.rb
new file mode 100644
index 00000000000..fc091d7894e
--- /dev/null
+++ b/db/migrate/20170912113435_clean_stages_statuses_migration.rb
@@ -0,0 +1,26 @@
+class CleanStagesStatusesMigration < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  class Stage < ActiveRecord::Base
+    include ::EachBatch
+    self.table_name = 'ci_stages'
+  end
+
+  def up
+    Gitlab::BackgroundMigration.steal('MigrateStageStatus')
+
+    Stage.where('status IS NULL').each_batch(of: 50) do |batch|
+      range = batch.pluck('MIN(id)', 'MAX(id)').first
+
+      Gitlab::BackgroundMigration::MigrateStageStatus.new.perform(*range)
+    end
+  end
+
+  def down
+    # noop
+  end
+end