forward error error=#<Encoding::UndefinedConversionError: "\xE6" from ASCII-8BIT to UTF-8> error_class=Encoding::UndefinedConversionError

telnet to server and send data

```
["test.abc",[[1449207484,{"cid":1,"time":1402497769,"name":"\u6155\u5bb9\u5fb7\u5eb7","ctime":1402110157}]],{"chunk":"a14492074850006"}]
```

error info

```
2015-12-04 13:38:04 +0800 [warn]: emit transaction failed: error_class=Encoding::UndefinedConversionError error="\"\\xE6\" from ASCII-8BIT to UTF-8" tag="test.abc"
```
