1 files changed, 26 insertions, 0 deletions
diff --git a/db/migrate/20210601133459_replace_runners_contacted_at_index.rb b/db/migrate/20210601133459_replace_runners_contacted_at_index.rb
new file mode 100644
index 00000000000..a0a933721f0
--- /dev/null
+++ b/db/migrate/20210601133459_replace_runners_contacted_at_index.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+# See https://docs.gitlab.com/ee/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class ReplaceRunnersContactedAtIndex < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  OLD_INDEX_NAME = 'index_ci_runners_on_contacted_at'
+
+  def up
+    add_concurrent_index :ci_runners, [:contacted_at, :id], order: { id: :desc }, name: 'index_ci_runners_on_contacted_at_and_id_desc', using: 'btree'
+    add_concurrent_index :ci_runners, [:contacted_at, :id], order: { contacted_at: :desc, id: :desc }, name: 'index_ci_runners_on_contacted_at_desc_and_id_desc', using: 'btree'
+
+    remove_concurrent_index_by_name :ci_runners, OLD_INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name :ci_runners, 'index_ci_runners_on_contacted_at_and_id_desc'
+    remove_concurrent_index_by_name :ci_runners, 'index_ci_runners_on_contacted_at_desc_and_id_desc'
+
+    add_concurrent_index :ci_runners, :contacted_at, name: OLD_INDEX_NAME, using: 'btree'
+  end
+end