Hi All,

I am learning Hadoop- Yarn.

1,How a job works in YARN/Map Reduce? like navigation path.

Please check my understanding is right?

When the application  or job or client starts,client communicate with Name node.
the application manager started on node ( data node  ), Application manager  communicates with Resource manager ( on name node ) to get  resource.
The resource are assigned to container.The job runs on Container which is JVM.

2,What is container?

Thanks & Regards,