4beacdb2ca
This ensures that merge_requests.state and merge_requests.merge_status both have a proper default value and NOT NULL constraint on database level. We also make sure to update any bogus rows first, without blowing up the database. Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/40534
50 lines
1.5 KiB
Ruby
50 lines
1.5 KiB
Ruby
# 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 PopulateMissingMergeRequestStatuses < ActiveRecord::Migration
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include Gitlab::Database::MigrationHelpers
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# Set this constant to true if this migration requires downtime.
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DOWNTIME = false
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disable_ddl_transaction!
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class MergeRequest < ActiveRecord::Base
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include EachBatch
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self.table_name = 'merge_requests'
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end
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def up
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say 'Populating missing merge_requests.state values'
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# GitLab.com has no rows where "state" is NULL, and technically this should
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# never happen. However it doesn't hurt to be 100% certain.
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MergeRequest.where(state: nil).each_batch do |batch|
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batch.update_all(state: 'opened')
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end
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say 'Populating missing merge_requests.merge_status values. ' \
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'This will take a few minutes...'
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# GitLab.com has 66 880 rows where "merge_status" is NULL, dating back all
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# the way to 2011.
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MergeRequest.where(merge_status: nil).each_batch(of: 10_000) do |batch|
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batch.update_all(merge_status: 'unchecked')
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# We want to give PostgreSQL some time to vacuum any dead tuples. In
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# production we see it takes roughly 1 minute for a vacuuming run to clear
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# out 10-20k dead tuples, so we'll wait for 90 seconds between every
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# batch.
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sleep(90) if sleep?
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end
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end
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def down
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# Reverting this makes no sense.
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end
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def sleep?
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Rails.env.staging? || Rails.env.production?
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end
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end
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