Log framework is not unified

[tinyRookie]

In Linkis' source code, I have found that your log framework is not unified, in most places, you use slf4j + log4j2, but you use just log4j somewhere. That's not a good code style for inspecting errors
在Linkis的源码中，我发现你的日志框架并不统一，大部分地方你用的是slf4j + log4j2，但你有的地方只用了log4j。 这不是检查错误的好代码风格

[yangzhiyue]

Thanks. It is a very suggesstive issue. We will unify the log framework soon.
谢谢。 这是一个很有建议性的问题。 我们很快就会统一日志框架。

[peacewong]

1.0 has been unified into log4j2