diff options
Diffstat (limited to 'db/migrate/20180524132016_merge_requests_target_id_iid_state_partial_index.rb')
-rw-r--r-- | db/migrate/20180524132016_merge_requests_target_id_iid_state_partial_index.rb | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/db/migrate/20180524132016_merge_requests_target_id_iid_state_partial_index.rb b/db/migrate/20180524132016_merge_requests_target_id_iid_state_partial_index.rb new file mode 100644 index 00000000000..cee576b91c8 --- /dev/null +++ b/db/migrate/20180524132016_merge_requests_target_id_iid_state_partial_index.rb @@ -0,0 +1,27 @@ +# See http://doc.gitlab.com/ce/development/migration_style_guide.html +# for more information on how to write migrations for GitLab. + +class MergeRequestsTargetIdIidStatePartialIndex < ActiveRecord::Migration + include Gitlab::Database::MigrationHelpers + + # Set this constant to true if this migration requires downtime. + DOWNTIME = false + + INDEX_NAME = 'index_merge_requests_on_target_project_id_and_iid_opened' + + disable_ddl_transaction! + + def up + # On GitLab.com this index will take up roughly 5 MB of space. + add_concurrent_index( + :merge_requests, + [:target_project_id, :iid], + where: "state = 'opened'", + name: INDEX_NAME + ) + end + + def down + remove_concurrent_index_by_name(:merge_requests, INDEX_NAME) + end +end |