diff --git a/server/website/website/migrations/0008_change_result_taskids_field.py b/server/website/website/migrations/0008_change_result_taskids_field.py
new file mode 100644
index 0000000..e542a54
--- /dev/null
+++ b/server/website/website/migrations/0008_change_result_taskids_field.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.27 on 2020-02-06 20:05
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('website', '0007_executiontime'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='result',
+            name='task_ids',
+            field=models.TextField(null=True),
+        ),
+    ]
diff --git a/server/website/website/views.py b/server/website/website/views.py
index 65c5f2a..918fba8 100644
--- a/server/website/website/views.py
+++ b/server/website/website/views.py
@@ -643,25 +643,17 @@ def handle_result_files(session, files, execution_times=None):
             ('map_workload', ()),
             ('configuration_recommendation', ()),
         ]
-        #response = chain(aggregate_target_results.s(result.pk, session.algorithm),
-        #                 map_workload.s(),
-        #                 configuration_recommendation.s()).apply_async()
     elif session.algorithm == AlgorithmType.DDPG:
         subtask_list = [
             ('train_ddpg', (result_id,)),
             ('configuration_recommendation_ddpg', ()),
         ]
-        #response = chain(train_ddpg.s(result.pk),
-        #                 configuration_recommendation_ddpg.s()).apply_async()
     elif session.algorithm == AlgorithmType.DNN:
         subtask_list = [
             ('aggregate_target_results', (result_id, session.algorithm)),
             ('map_workload', ()),
             ('configuration_recommendation', ()),
         ]
-        #response = chain(aggregate_target_results.s(result.pk, session.algorithm),
-        #                 map_workload.s(),
-        #                 configuration_recommendation.s()).apply_async()
 
     subtasks = []
     for name, args in subtask_list:
@@ -673,15 +665,6 @@ def handle_result_files(session, files, execution_times=None):
     result.task_ids = JSONUtil.dumps(response.as_tuple())
     result.save()
 
-    #taskmeta_ids = []
-    #current_task = response
-    #while current_task:
-    #    taskmeta_ids.insert(0, current_task.id)
-    #    current_task = current_task.parent
-
-    #result.task_ids = ','.join(taskmeta_ids)
-    #result.save()
-
     if execution_times:
         try:
             batch = []