82 lines
1.8 KiB
Ruby
82 lines
1.8 KiB
Ruby
# frozen_string_literal: true
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# Sync remaining records for issues/merge_requests tables where state_id
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# is still null.
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# For more information check: https://gitlab.com/gitlab-org/gitlab/issues/26823
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# It creates a temporary index before performing the UPDATES to sync values.
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#
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# In 09-11-2019 we have the following numbers for records with state_id == nil:
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#
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# 1348 issues - default batch size for each update 67
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# 10247 merge requests - default batch size for each update 511
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class SyncIssuablesStateId < 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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def up
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%i(issues merge_requests).each do |table|
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temp_index_name = index_name_for(table)
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add_concurrent_index(
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table,
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'id',
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name: temp_index_name,
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where: 'state_id IS NULL'
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)
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update_value = update_condition_for(table)
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update_column_in_batches(table, :state_id, update_value) do |table, query|
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query.where(table[:state_id].eq(nil))
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end
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ensure
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remove_concurrent_index_by_name(table, temp_index_name)
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end
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end
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def down
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# NO OP
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end
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def update_condition_for(table)
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value_expresson =
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if table == :issues
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issues_state_id_condition
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else
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merge_requests_state_id_condition
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end
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Arel.sql(value_expresson)
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end
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def index_name_for(table)
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"idx_tmp_on_#{table}_where_state_id_is_null"
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end
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def issues_state_id_condition
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<<~SQL
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CASE state
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WHEN 'opened' THEN 1
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WHEN 'closed' THEN 2
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ELSE 2
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END
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SQL
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end
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def merge_requests_state_id_condition
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<<~SQL
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CASE state
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WHEN 'opened' THEN 1
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WHEN 'closed' THEN 2
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WHEN 'merged' THEN 3
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WHEN 'locked' THEN 4
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ELSE 2
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END
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SQL
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end
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end
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