这些应用程序属性通常称为元数据，并且可以根据客户状态确定用户如何获得不同级别的服务（举例而言）。
These application attributes are often called metadata, and can determine how users can get a different level of service according to customer status, for example.
然而，为了使得文件系统驱动程序正常工作，有一个很重要的必要条件；它需要在某种合理的、一致的和没有干扰的状态下找到元数据。
However, in order for the filesystem driver to work properly, it has one important requirement; it expects to find the meta-data in some kind of reasonable, consistent, non-corrupted state.
您可以选择记录异常、配置信息、连接状态、JDBC驱动程序元数据、或者查询参数。
You may choose to log exceptions, configuration information, connection status, JDBC driver metadata, or query parameters.
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