44 lines
1.1 KiB
Ruby
44 lines
1.1 KiB
Ruby
# frozen_string_literal: true
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# See http://doc.gitlab.com/ce/development/migration_style_guide.html
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# for more information on how to write migrations for GitLab.
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class CleanupOptimisticLockingNulls < ActiveRecord::Migration[5.2]
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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disable_ddl_transaction!
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TABLES = %w(epics merge_requests issues).freeze
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BATCH_SIZE = 10_000
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def declare_class(table)
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Class.new(ActiveRecord::Base) do
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include EachBatch
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self.table_name = table
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self.inheritance_column = :_type_disabled # Disable STI
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end
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end
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def up
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TABLES.each do |table|
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add_concurrent_index table.to_sym, :lock_version, where: "lock_version IS NULL"
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queue_background_migration_jobs_by_range_at_intervals(
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declare_class(table).where(lock_version: nil),
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'CleanupOptimisticLockingNulls',
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2.minutes,
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batch_size: BATCH_SIZE,
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other_arguments: [table]
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)
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end
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end
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def down
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TABLES.each do |table|
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remove_concurrent_index table.to_sym, :lock_version, where: "lock_version IS NULL"
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end
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end
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end
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