fix bugs

client/driver/fabfile.py

@@ -530,17 +530,17 @@ def loop(i):
 
     # remove oltpbench log and controller log
     clean_logs()
-
     # restart database
     restart_succeeded = restart_database()
     if not restart_succeeded:
-        files = {'summary':b'{error:"DB_RESTART_ERROR"}',
-                 'knobs':b'',
-                 'metrics_before':b'',
-                 'metrics_after':b''}
+        files = {'summary': b'{"error": "DB_RESTART_ERROR"}',
+                 'knobs': b'{}',
+                 'metrics_before': b'{}',
+                 'metrics_after': b'{}'}
         response = requests.post(dconf.WEBSITE_URL + '/new_result/', files=files,
                              data={'upload_code': dconf.UPLOAD_CODE})
         response = get_result()
+        result_timestamp = int(time.time())
         save_next_config(response, t=result_timestamp)
         change_conf(response['recommendation'])
         return