Difference between Application Manager and Application Master in YARN?

Question

I understood how MRv1 works.Now I am trying to understand MRv2.. what\'s the difference between Application Manager and Application Master in YARN?

Answer 1

Here Application refers to a single job assigned to the framework.

The Application manager is responsible to accept or reject the application when it is submitted to the Resource manager by the client.

The Application master is responsible for the execution of a single application when it is assigned to the Node manager by the Resource manager.

Does this make sense?