No you can't link it per se.
Metadata folders are different than physical folders. They are merely placeholders to group meta data objects logically and can be used for authorization purposes.
But you can manually place your meta data objects that corresponds to physical objects in a specific path in hdfs. There is no meta data object for a physical file path (that I know of...) But if you refer to as
@john_mccue suggests Hive tables, the Hive library is a meta data object itself.
Since there is no linking functionality you might want to register new meta data as an automated process, which could be accomplished via proc metalib.
Data never sleeps