CDAP has different naming conventions for different entities in CDAP. We distinguish these different character sets, and note which entities use them:
This is the basic character set that all entities support:
Alphanumeric characters (a-z A-Z 0-9)
Namespace IDs can use an alphanumeric extended character set:
Alphanumeric characters (a-z A-Z 0-9)
Underscores (_)
Except as noted on this page, all other CDAP entities (such as apps and plugins) support an alphanumeric extra extended character set:
Alphanumeric characters (a-z A-Z 0-9)
Hyphens (-)
Underscores (_)
Note that datasets whose names begin with an underscore (_) will not be visible in the home page of the CDAP UI, although they will be visible elsewhere in the CDAP UI.
In earlier versions of CDAP, Dataset names used the alphanumeric extra extended character set, plus periods:
Alphanumeric characters (a-z A-Z 0-9)
Hyphens (-)
Periods (.)
Underscores (_)
We recommend that instead you use the Alphanumeric Extra Extended Character Set, as support for this may be removed in the future.