• HTTP RESTful API v3: CDAP has an HTTP interface for a multitude of purposes: everything from sending data events to a Stream or to inspect the contents of a Stream through checking the status of various System and Custom CDAP services. V3 of the API includes the namespacing of applications, data and metadata to achieve application and data isolation. This is an inital step towards introducing multi-tenancy into CDAP.
  • HTTP RESTful API v2: This earlier, non-namespaced version of the HTTP RESTful API is deprecated as of CDAP version 2.8.0. Please update to your code to use the new API v3 with namespaces.