Remove dangling running entries from ci running builds table

Changelog: fixed

db/post_migrate/20220128155251_remove_dangling_running_builds.rb

+# frozen_string_literal: true
+
+class RemoveDanglingRunningBuilds < Gitlab::Database::Migration[1.0]
+  BATCH_SIZE = 100
+
+  disable_ddl_transaction!
+
+  def up
+    each_batch_range('ci_running_builds', of: BATCH_SIZE) do |min, max|
+      execute <<~SQL
+        DELETE FROM ci_running_builds
+          USING ci_builds
+          WHERE ci_builds.id = ci_running_builds.build_id
+            AND ci_builds.status = 'failed'
+            AND ci_builds.type = 'Ci::Build'
+            AND ci_running_builds.id BETWEEN #{min} AND #{max}
+      SQL
+    end
+  end
+
+  def down
+    # no-op
+    # This migration deletes data and it can not be reversed
+  end
+end

db/schema_migrations/20220128155251

+0d121aeecdd6ace1516c2e9b84fefd47d963c4cbe22a0448728241d83da3742e
\ No newline at end of file

spec/migrations/20220128155251_remove_dangling_running_builds_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+require_migration!('remove_dangling_running_builds')
+
+RSpec.describe RemoveDanglingRunningBuilds do
+  let(:namespace) { table(:namespaces).create!(name: 'user', path: 'user') }
+  let(:project) { table(:projects).create!(namespace_id: namespace.id) }
+  let(:runner) { table(:ci_runners).create!(runner_type: 1) }
+  let(:builds) { table(:ci_builds) }
+  let(:running_builds) { table(:ci_running_builds) }
+
+  let(:running_build) do
+    builds.create!(
+      name: 'test 1',
+      status: 'running',
+      project_id: project.id,
+      type: 'Ci::Build')
+  end
+
+  let(:failed_build) do
+    builds.create!(
+      name: 'test 2',
+      status: 'failed',
+      project_id: project.id,
+      type: 'Ci::Build')
+  end
+
+  let!(:running_metadata) do
+    running_builds.create!(
+      build_id: running_build.id,
+      project_id: project.id,
+      runner_id: runner.id,
+      runner_type:
+      runner.runner_type)
+  end
+
+  let!(:failed_metadata) do
+    running_builds.create!(
+      build_id: failed_build.id,
+      project_id: project.id,
+      runner_id: runner.id,
+      runner_type: runner.runner_type)
+  end
+
+  it 'removes failed builds' do
+    migrate!
+
+    expect(running_metadata.reload).to be_present
+    expect { failed_metadata.reload } .to raise_error(ActiveRecord::RecordNotFound)
+  end
+end