diff options
Diffstat (limited to 'db/post_migrate/20190322132835_schedule_populate_merge_request_assignees_table.rb')
| -rw-r--r-- | db/post_migrate/20190322132835_schedule_populate_merge_request_assignees_table.rb | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/db/post_migrate/20190322132835_schedule_populate_merge_request_assignees_table.rb b/db/post_migrate/20190322132835_schedule_populate_merge_request_assignees_table.rb new file mode 100644 index 00000000000..1ecb38e1a86 --- /dev/null +++ b/db/post_migrate/20190322132835_schedule_populate_merge_request_assignees_table.rb @@ -0,0 +1,23 @@ +# frozen_string_literal: true + +# See http://doc.gitlab.com/ce/development/migration_style_guide.html +# for more information on how to write migrations for GitLab. + +class SchedulePopulateMergeRequestAssigneesTable < ActiveRecord::Migration[5.0] + include Gitlab::Database::MigrationHelpers + + DOWNTIME = false + BATCH_SIZE = 10_000 + MIGRATION = 'PopulateMergeRequestAssigneesTable' + DELAY_INTERVAL = 8.minutes.to_i + + disable_ddl_transaction! + + def up + say 'Scheduling `PopulateMergeRequestAssigneesTable` jobs' + # We currently have ~4_500_000 merge request records on GitLab.com. + # This means it'll schedule ~450 jobs (10k MRs each) with a 8 minutes gap, + # so this should take ~60 hours for all background migrations to complete. + queue_background_migration_jobs_by_range_at_intervals(MergeRequest, MIGRATION, DELAY_INTERVAL, batch_size: BATCH_SIZE) + end +end |