58 lines
1.7 KiB
Ruby
58 lines
1.7 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module BackgroundMigration
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# Back-fills the `issues.namespace_id` by setting it to corresponding project.project_namespace_id
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class BackfillProjectNamespaceOnIssues < BatchedMigrationJob
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MAX_UPDATE_RETRIES = 3
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operation_name :update_all
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def perform
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each_sub_batch(
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batching_scope: -> (relation) {
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relation.joins("INNER JOIN projects ON projects.id = issues.project_id")
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.select("issues.id AS issue_id, projects.project_namespace_id").where(issues: { namespace_id: nil })
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}
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) do |sub_batch|
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# updating issues table results in failed batches quite a bit,
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# to prevent that as much as possible we try to update the same sub-batch up to 3 times.
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update_with_retry(sub_batch)
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end
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end
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private
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# rubocop:disable Database/RescueQueryCanceled
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# rubocop:disable Database/RescueStatementTimeout
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def update_with_retry(sub_batch)
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update_attempt = 1
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begin
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update_batch(sub_batch)
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rescue ActiveRecord::StatementTimeout, ActiveRecord::QueryCanceled => e
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update_attempt += 1
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if update_attempt <= MAX_UPDATE_RETRIES
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sleep(5)
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retry
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end
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raise e
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end
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end
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# rubocop:enable Database/RescueQueryCanceled
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# rubocop:enable Database/RescueStatementTimeout
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def update_batch(sub_batch)
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connection.execute <<~SQL
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UPDATE issues
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SET namespace_id = projects.project_namespace_id
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FROM (#{sub_batch.to_sql}) AS projects(issue_id, project_namespace_id)
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WHERE issues.id = issue_id
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SQL
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end
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end
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end
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end
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