Add partial index for active Cluster Image Scanning vulnerabilities

Changelog: performance

db/post_migrate/20220209111007_add_partial_index_for_batching_active_cluster_image_scanning_vulnerabilities.rb

+# frozen_string_literal: true
+
+class AddPartialIndexForBatchingActiveClusterImageScanningVulnerabilities < Gitlab::Database::Migration[1.0]
+  INDEX_NAME = 'index_vulnerabilities_on_project_id_and_id_active_cis'
+  INDEX_FILTER_CONDITION = 'report_type = 7 AND state = ANY(ARRAY[1, 4])'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :vulnerabilities, [:project_id, :id], where: INDEX_FILTER_CONDITION, name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index :vulnerabilities, [:project_id, :id], name: INDEX_NAME
+  end
+end

db/schema_migrations/20220209111007

+9462258bcbe45ab80f7ef5a02f8b8d5c0ed6ac69bf04b8934ae3dee2261ba458
\ No newline at end of file

db/structure.sql

@@ -28140,6 +28140,8 @@ CREATE INDEX index_vulnerabilities_on_milestone_id ON vulnerabilities USING btre
 
 CREATE INDEX index_vulnerabilities_on_project_id_and_id ON vulnerabilities USING btree (project_id, id);
 
+CREATE INDEX index_vulnerabilities_on_project_id_and_id_active_cis ON vulnerabilities USING btree (project_id, id) WHERE ((report_type = 7) AND (state = ANY (ARRAY[1, 4])));
+
 CREATE INDEX index_vulnerabilities_on_project_id_and_state_and_severity ON vulnerabilities USING btree (project_id, state, severity);
 
 CREATE INDEX index_vulnerabilities_on_resolved_by_id ON vulnerabilities USING btree (resolved_by_id);

ee/spec/models/ee/vulnerability_spec.rb

@@ -29,7 +29,7 @@ RSpec.describe Vulnerability do
   let_it_be(:vulnerability) { create(:vulnerability, :sast, :confirmed, :low, project: project) }
   let_it_be(:finding) { create(:vulnerabilities_finding, vulnerability: vulnerability) }
 
-  it { is_expected.to have_locked_schema('f2d19034bdc7733dad8451dbb26250298f7de27895e99a2a0932f6d728f3cc27').reference('https://gitlab.com/gitlab-org/gitlab/-/issues/349315') }
+  it { is_expected.to have_locked_schema('1128736d19b1457375faecb3bf8017350431dbbca91222c8edfcfa7c649638fb').reference('https://gitlab.com/gitlab-org/gitlab/-/issues/349315') }
 
   describe 'enums' do
     it { is_expected.to define_enum_for(:state).with_values(state_values) }