1 files changed, 26 insertions, 0 deletions
diff --git a/db/migrate/20170402231018_remove_index_for_users_current_sign_in_at.rb b/db/migrate/20170402231018_remove_index_for_users_current_sign_in_at.rb
new file mode 100644
index 00000000000..9d4380ef960
--- /dev/null
+++ b/db/migrate/20170402231018_remove_index_for_users_current_sign_in_at.rb
@@ -0,0 +1,26 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+# rubocop:disable RemoveIndex
+class RemoveIndexForUsersCurrentSignInAt < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    if index_exists? :users, :current_sign_in_at
+      if Gitlab::Database.postgresql?
+        execute 'DROP INDEX CONCURRENTLY index_users_on_current_sign_in_at;'
+      else
+        remove_concurrent_index :users, :current_sign_in_at
+      end
+    end
+  end
+
+  def down
+    add_concurrent_index :users, :current_sign_in_at
+  end
+end