Add index to objects.

priv/repo/migrations/20170330153447_add_index_to_objects.exs

@@ -0,0 +1,7 @@
+defmodule Pleroma.Repo.Migrations.AddIndexToObjects do
+  use Ecto.Migration
+
+  def change do
+    create index(:objects, [:data], using: :gin)
+  end
+end