How long does a RRIF last?

I understand that RRIF stands for Registered Retirement Income Fund, a popular retirement savings plan in Canada. As a questioner, I'd like to inquire about the duration of a RRIF. Can you explain to me how long a RRIF typically lasts, and what factors might affect its lifespan? Does the holder have control over how long the RRIF is maintained, or are there any regulations or requirements that govern its duration? Additionally, what happens to the RRIF funds when it reaches its end-of-life stage? I'm curious to understand the mechanics behind this financial tool and how it can best serve retirees.