Remove alllow database cross join from runner_matchers

Changelog: other

app/models/ci/runner.rb

@@ -255,18 +255,16 @@ module Ci
         Arel.sql("(#{arel_tag_names_array.to_sql})")
       ]
 
-      ::Gitlab::Database.allow_cross_joins_across_databases(url: 'https://gitlab.com/gitlab-org/gitlab/-/issues/339621') do
-        group(*unique_params).pluck('array_agg(ci_runners.id)', *unique_params).map do |values|
-          Gitlab::Ci::Matching::RunnerMatcher.new({
-            runner_ids: values[0],
-            runner_type: values[1],
-            public_projects_minutes_cost_factor: values[2],
-            private_projects_minutes_cost_factor: values[3],
-            run_untagged: values[4],
-            access_level: values[5],
-            tag_list: values[6]
-          })
-        end
+      group(*unique_params).pluck('array_agg(ci_runners.id)', *unique_params).map do |values|
+        Gitlab::Ci::Matching::RunnerMatcher.new({
+          runner_ids: values[0],
+          runner_type: values[1],
+          public_projects_minutes_cost_factor: values[2],
+          private_projects_minutes_cost_factor: values[3],
+          run_untagged: values[4],
+          access_level: values[5],
+          tag_list: values[6]
+        })
       end
     end
 

ee/spec/lib/gitlab/ci/minutes/runners_availability_spec.rb

@@ -33,9 +33,11 @@ RSpec.describe Gitlab::Ci::Minutes::RunnersAvailability do
     end
   end
 
-  context 'N+1 queries' do
+  context 'database queries' do
     let_it_be(:project) { create(:project) }
-    let_it_be(:private_runner) { create(:ci_runner, :project, :online, projects: [project]) }
+    let_it_be(:private_runner) do
+      create(:ci_runner, :project, :online, projects: [project])
+    end
 
     it 'caches records loaded from database' do
       ActiveRecord::QueryRecorder.new(skip_cached: false) do
@@ -44,5 +46,11 @@ RSpec.describe Gitlab::Ci::Minutes::RunnersAvailability do
 
       expect { minutes.available?(build.build_matcher) }.not_to exceed_all_query_limit(0)
     end
+
+    it 'does not join across databases' do
+      with_cross_joins_prevented do
+        minutes.available?(build.build_matcher)
+      end
+    end
   end
 end