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Posted to common-user@hadoop.apache.org by Vinodh Nagaraj <vi...@gmail.com> on 2016/04/06 12:06:02 UTC

How a job works in YARN/Map Reduce

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,
Vinodh.N