always invalidate session after process loop

server/djrandom/model/processor.py

@@ -54,8 +54,8 @@ class Processor(object):
                 n = self.full_scan()
             except Exception, e:
                 log.error('Temporary error: %s' % e)
+            Session.remove()
             if run_once:
                 break
             if not n:
-                Session.remove()
                 time.sleep(period)