我已经在cloudera的/usr/share中安装了livy服务器。我想更改livy\u conf\u dir的设置，以便管理log4j.properties之类的配置文件。
cloudera说这是可能的，但我找不到如何定义它。 https://github.com/cloudera/livy#building-livy 来自github的代码片段

Livy Configuration
Livy uses a few configuration files under configuration the directory, which by default is the conf directory under the Livy installation. An alternative configuration directory can be provided by setting the LIVY_CONF_DIR environment variable when starting Livy.