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# frozen_string_literal: true
class ScheduleDeleteOrphanedDeployments < ActiveRecord::Migration[6.1]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
MIGRATION = 'DeleteOrphanedDeployments'
BATCH_SIZE = 100_000
DELAY_INTERVAL = 2.minutes
disable_ddl_transaction!
def up
# no-op.
# This background migration is rescheduled in 20210722010101_cleanup_delete_orphaned_deployments_background_migration.rb
# with a smaller batch size, because the initial attempt caused
# 80 failures out of 1639 batches (faiulre rate is 4.88%) due to statement timeouts,
# that takes approx. 1 hour to perform a cleanup/sync migration.
# See https://gitlab.com/gitlab-org/gitlab/-/issues/335071#note_618380503 for more information.
end
def down
# no-op
end
end
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