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3 files changed, 97 insertions, 0 deletions
diff --git a/changelogs/unreleased/36631-activerecord-statementinvalid-pg-querycanceled-error-canceling-statement-due-to-statement-timeout.yml b/changelogs/unreleased/36631-activerecord-statementinvalid-pg-querycanceled-error-canceling-statement-due-to-statement-timeout.yml new file mode 100644 index 00000000000..a2e1d07158b --- /dev/null +++ b/changelogs/unreleased/36631-activerecord-statementinvalid-pg-querycanceled-error-canceling-statement-due-to-statement-timeout.yml @@ -0,0 +1,6 @@ +--- +title: Reschedule merge request diff background migrations to catch failures from + 9.5 run +merge_request: +author: +type: fixed diff --git a/db/post_migrate/20170926150348_schedule_merge_request_diff_migrations_take_two.rb b/db/post_migrate/20170926150348_schedule_merge_request_diff_migrations_take_two.rb new file mode 100644 index 00000000000..5732cb85ea5 --- /dev/null +++ b/db/post_migrate/20170926150348_schedule_merge_request_diff_migrations_take_two.rb @@ -0,0 +1,32 @@ +class ScheduleMergeRequestDiffMigrationsTakeTwo < ActiveRecord::Migration + include Gitlab::Database::MigrationHelpers + + DOWNTIME = false + BATCH_SIZE = 500 + MIGRATION = 'DeserializeMergeRequestDiffsAndCommits' + DELAY_INTERVAL = 10.minutes + + disable_ddl_transaction! + + class MergeRequestDiff < ActiveRecord::Base + self.table_name = 'merge_request_diffs' + + include ::EachBatch + + default_scope { where('st_commits IS NOT NULL OR st_diffs IS NOT NULL') } + end + + # By this point, we assume ScheduleMergeRequestDiffMigrations - the first + # version of this - has already run. On GitLab.com, we have ~220k un-migrated + # rows, but these rows will, in general, take a long time. + # + # With a gap of 10 minutes per batch, and 500 rows per batch, these migrations + # are scheduled over 220_000 / 500 / 6 ~= 74 hours, which is a little over + # three days. + def up + queue_background_migration_jobs_by_range_at_intervals(MergeRequestDiff, MIGRATION, DELAY_INTERVAL, batch_size: BATCH_SIZE) + end + + def down + end +end diff --git a/spec/migrations/schedule_merge_request_diff_migrations_take_two_spec.rb b/spec/migrations/schedule_merge_request_diff_migrations_take_two_spec.rb new file mode 100644 index 00000000000..4ab1bb67058 --- /dev/null +++ b/spec/migrations/schedule_merge_request_diff_migrations_take_two_spec.rb @@ -0,0 +1,59 @@ +require 'spec_helper' +require Rails.root.join('db', 'post_migrate', '20170926150348_schedule_merge_request_diff_migrations_take_two') + +describe ScheduleMergeRequestDiffMigrationsTakeTwo, :migration, :sidekiq do + matcher :be_scheduled_migration do |time, *expected| + match do |migration| + BackgroundMigrationWorker.jobs.any? do |job| + job['args'] == [migration, expected] && + job['at'].to_i == time.to_i + end + end + + failure_message do |migration| + "Migration `#{migration}` with args `#{expected.inspect}` not scheduled!" + end + end + + let(:merge_request_diffs) { table(:merge_request_diffs) } + let(:merge_requests) { table(:merge_requests) } + let(:projects) { table(:projects) } + + before do + stub_const("#{described_class.name}::BATCH_SIZE", 1) + + projects.create!(id: 1, name: 'gitlab', path: 'gitlab') + + merge_requests.create!(id: 1, target_project_id: 1, source_project_id: 1, target_branch: 'feature', source_branch: 'master') + + merge_request_diffs.create!(id: 1, merge_request_id: 1, st_commits: YAML.dump([]), st_diffs: nil) + merge_request_diffs.create!(id: 2, merge_request_id: 1, st_commits: nil, st_diffs: YAML.dump([])) + merge_request_diffs.create!(id: 3, merge_request_id: 1, st_commits: nil, st_diffs: nil) + merge_request_diffs.create!(id: 4, merge_request_id: 1, st_commits: YAML.dump([]), st_diffs: YAML.dump([])) + end + + it 'correctly schedules background migrations' do + Sidekiq::Testing.fake! do + Timecop.freeze do + migrate! + + expect(described_class::MIGRATION).to be_scheduled_migration(10.minutes.from_now, 1, 1) + expect(described_class::MIGRATION).to be_scheduled_migration(20.minutes.from_now, 2, 2) + expect(described_class::MIGRATION).to be_scheduled_migration(30.minutes.from_now, 4, 4) + expect(BackgroundMigrationWorker.jobs.size).to eq 3 + end + end + end + + it 'migrates the data' do + Sidekiq::Testing.inline! do + non_empty = 'st_commits IS NOT NULL OR st_diffs IS NOT NULL' + + expect(merge_request_diffs.where(non_empty).count).to eq 3 + + migrate! + + expect(merge_request_diffs.where(non_empty).count).to eq 0 + end + end +end |