What does hola alli mean?

"Hola alli" isn't a standard Spanish phrase. It's possible it's a misspelling or a regional variation.

Here are some possible meanings:

* "Hola allí" (with an accent on the "í") would mean "Hello there" in Spanish. This is a common greeting.

* "Hola, allí" could mean "Hello, there" where "allí" is used as a place. It would depend on the context.

If you can provide more context or information about where you heard this phrase, I might be able to help you understand it better.