Reschedule Recalculate Finding signatures BG migration

db/post_migrate/20211208171402_reschedule_recalculate_vulnerability_finding_signatures_for_findings.rb

+# frozen_string_literal: true
+
+class RescheduleRecalculateVulnerabilityFindingSignaturesForFindings < Gitlab::Database::Migration[1.0]
+  MIGRATION = 'RecalculateVulnerabilityFindingSignaturesForFindings'
+  BATCH_SIZE = 1_000
+  DELAY_INTERVAL = 2.minutes
+
+  disable_ddl_transaction!
+
+  # Due to production incident previous migration was orphaned and must be rescheduled,
+  # See https://gitlab.com/gitlab-org/gitlab/-/merge_requests/72919#note_741188600
+  def up
+    return unless Gitlab.ee?
+
+    delete_queued_jobs(MIGRATION)
+
+    requeue_background_migration_jobs_by_range_at_intervals(
+      MIGRATION,
+      DELAY_INTERVAL,
+      batch_size: BATCH_SIZE
+    )
+  end
+
+  def down
+    # no-op
+  end
+end

db/schema_migrations/20211208171402

+09a9e7fc042aab19bf768a79401f33b6e7408acff303fc0ee68360dfd7605101
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