1 files changed, 19 insertions, 0 deletions
diff --git a/db/post_migrate/20220124152824_remove_projects_ci_subscriptions_projects_downstream_project_id_fk.rb b/db/post_migrate/20220124152824_remove_projects_ci_subscriptions_projects_downstream_project_id_fk.rb
new file mode 100644
index 00000000000..8596b1f14ba
--- /dev/null
+++ b/db/post_migrate/20220124152824_remove_projects_ci_subscriptions_projects_downstream_project_id_fk.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class RemoveProjectsCiSubscriptionsProjectsDownstreamProjectIdFk < Gitlab::Database::Migration[1.0]
+  disable_ddl_transaction!
+
+  def up
+    return unless foreign_key_exists?(:ci_subscriptions_projects, :projects, name: "fk_rails_0818751483")
+
+    with_lock_retries do
+      execute('LOCK projects, ci_subscriptions_projects IN ACCESS EXCLUSIVE MODE') if transaction_open?
+
+      remove_foreign_key_if_exists(:ci_subscriptions_projects, :projects, name: "fk_rails_0818751483")
+    end
+  end
+
+  def down
+    add_concurrent_foreign_key(:ci_subscriptions_projects, :projects, name: "fk_rails_0818751483", column: :downstream_project_id, target_column: :id, on_delete: :cascade)
+  end
+end