The YARN application workflow

Now, take a look at the following sequence diagram that describes the YARN application workflow and also explains how container allocation is done for an application via the ApplicationMaster:

The YARN application workflow

Refer to the preceding diagram for the following details:

  • The client submits the application request to the ResourceManager.
  • The ResourceManager registers the application with the ApplicationManager, generates the ApplicationID, and responds to the client with the successfully registered ApplicationID.
  • Then, the ResourceManager starts the client's ApplicationMaster in a separate available container. If no container is available, then ...

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