1 files changed, 19 insertions, 0 deletions
diff --git a/db/migrate/20170424095707_add_index_on_ci_builds_user_id.rb b/db/migrate/20170424095707_add_index_on_ci_builds_user_id.rb
new file mode 100644
index 00000000000..348d5dbc270
--- /dev/null
+++ b/db/migrate/20170424095707_add_index_on_ci_builds_user_id.rb
@@ -0,0 +1,19 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddIndexOnCiBuildsUserId < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :ci_builds, :user_id
+  end
+
+  def down
+    remove_concurrent_index :ci_builds, :user_id if index_exists?(:ci_builds, :user_id)
+  end
+end