Headlines this morning (Saturday 1/13/2018) proclaimed that "Hawaiians woke up to emergency alerts" on mobile phones that a missile strike might be incoming. But no local news source here in Hawaii would have reported it that way. The term Hawaiian is not used locally to mean "resident of the state of Hawaii", unlike other English nouns formed by adding "-an" to a place name. Only people of Hawaiian ancestry are "Hawaiians".
So what does the noun "Hawaiian" really mean in English? "Descendants of Hawaiians" seems circular. The Merriam-Webster online dictionary is not all that helpful. It says "a native or resident of Hawaii; especially : one of Polynesian ancestry", which ignores the fact that there are lots of people of Polynesian ancestry in the world, some of whom have even moved to Hawaii, but who didn't thereby become Hawaiians.