Reorder async/sync tasks in BuildFinishedWorker to read traces efficiently

app/workers/build_finished_worker.rb

@@ -6,8 +6,11 @@ class BuildFinishedWorker
 
   def perform(build_id)
     Ci::Build.find_by(id: build_id).try do |build|
-      BuildTraceSectionsWorker.perform_async(build.id)
-      BuildCoverageWorker.perform_async(build.id)
+      # We execute that in sync as this access the files in order to access local file, and reduce IO
+      BuildTraceSectionsWorker.new.perform(build.id)
+      BuildCoverageWorker.new.perform(build.id)
+
+      # We execute that async as this are two indepentent operations that can be executed after TraceSections and Coverage
       BuildHooksWorker.perform_async(build.id)
       CreateTraceArtifactWorker.perform_async(build.id)
     end

spec/workers/build_finished_worker_spec.rb

@@ -6,19 +6,15 @@ describe BuildFinishedWorker do
       let!(:build) { create(:ci_build) }
 
       it 'calculates coverage and calls hooks' do
-        expect(BuildCoverageWorker)
+        expect(BuildTraceSectionsWorker)
           .to receive(:new).ordered.and_call_original
-        expect(BuildHooksWorker)
+        expect(BuildCoverageWorker)
           .to receive(:new).ordered.and_call_original
 
-        expect(BuildTraceSectionsWorker)
-          .to receive(:perform_async)
-        expect(CreateTraceArtifactWorker)
-          .to receive(:perform_async)
-        expect_any_instance_of(BuildCoverageWorker)
-          .to receive(:perform)
-        expect_any_instance_of(BuildHooksWorker)
-          .to receive(:perform)
+        expect_any_instance_of(BuildTraceSectionsWorker).to receive(:perform)
+        expect_any_instance_of(BuildCoverageWorker).to receive(:perform)
+        expect(BuildHooksWorker).to receive(:perform_async)
+        expect(CreateTraceArtifactWorker).to receive(:perform_async)
 
         described_class.new.perform(build.id)
       end