> for EIS name was administrator would still need to keep a mapping of EIS JNDI name to EIS "short" name
No, the server can simply allocate and store a new uniq short EIS name for any long name it has not seen before. Because the server has view over the entire scope, so that mapping process can be automated. That's the key difference with nodeIdentifier - a server does not have sufficient local information to allocate itself a globally uniq node id.