1 files changed, 21 insertions, 0 deletions
diff --git a/db/post_migrate/20201120140210_add_runner_id_and_id_desc_index_to_ci_builds.rb b/db/post_migrate/20201120140210_add_runner_id_and_id_desc_index_to_ci_builds.rb
new file mode 100644
index 00000000000..5eda0e25dbe
--- /dev/null
+++ b/db/post_migrate/20201120140210_add_runner_id_and_id_desc_index_to_ci_builds.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class AddRunnerIdAndIdDescIndexToCiBuilds < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  NEW_INDEX = 'index_ci_builds_on_runner_id_and_id_desc'
+  OLD_INDEX = 'index_ci_builds_on_runner_id'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :ci_builds, %i[runner_id id], name: NEW_INDEX, order: { id: :desc }
+    remove_concurrent_index_by_name :ci_builds, OLD_INDEX
+  end
+
+  def down
+    add_concurrent_index :ci_builds, %i[runner_id], name: OLD_INDEX
+    remove_concurrent_index_by_name :ci_builds, NEW_INDEX
+  end
+end