From 3cfa40a6ef2802a07340797e4fab2ecafeb3da80 Mon Sep 17 00:00:00 2001
From: "vn.py" <vn.py@foxmail.com>
Date: Fri, 27 Apr 2018 15:56:43 +0800
Subject: [PATCH] [Fix]Close #832

---
 vnpy/trader/app/dataRecorder/drEngine.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vnpy/trader/app/dataRecorder/drEngine.py b/vnpy/trader/app/dataRecorder/drEngine.py
index 21f8d7c5..5b29f3dd 100644
--- a/vnpy/trader/app/dataRecorder/drEngine.py
+++ b/vnpy/trader/app/dataRecorder/drEngine.py
@@ -246,7 +246,7 @@ class DrEngine(object):
                 try:
                     self.mainEngine.dbInsert(dbName, collectionName, d)
                 except DuplicateKeyError:
-                    self.writeDrLog(u'键值重复插入失败，报错信息：' %traceback.format_exc())
+                    self.writeDrLog(u'键值重复插入失败，报错信息：%s' %traceback.format_exc())
             except Empty:
                 pass