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class RescheduleCommitsCountForMergeRequestDiff < ActiveRecord::Migration[4.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
MIGRATION = 'AddMergeRequestDiffCommitsCount'.freeze
BATCH_SIZE = 5000
DELAY_INTERVAL = 5.minutes.to_i
class MergeRequestDiff < ActiveRecord::Base
self.table_name = 'merge_request_diffs'
include ::EachBatch
end
disable_ddl_transaction!
def up
say 'Populating the MergeRequestDiff `commits_count` (reschedule)'
execute("SET statement_timeout TO '60s'") if Gitlab::Database.postgresql?
MergeRequestDiff.where(commits_count: nil).each_batch(of: BATCH_SIZE) do |relation, index|
start_id, end_id = relation.pluck('MIN(id), MAX(id)').first
delay = index * DELAY_INTERVAL
BackgroundMigrationWorker.perform_in(delay, MIGRATION, [start_id, end_id])
end
end
end
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