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Which MapReduce v2 (MR2/YARN) daemon is a per-machine slave responsible for launching application containers a

Which MapReduce v2 (MR2/YARN) daemon is a per-machine slave responsible for launching
application containers and monitoring application resources usage?

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A.
JobTracker

B.
ResourceManager

C.
ApplicationMaster

D.
NodeManager

E.
ApplicationMasterService

F.
TaskTracker

Explanation:
The fundamental idea of MRv2 (YARN) is to split up the two major functionalities of
the JobTracker, resource management and job scheduling/monitoring, into separate daemons.
The idea is to have a global ResourceManager (RM) and per-application ApplicationMaster (AM).
Note: Let’s walk through an application execution sequence :
Apache Hadoop YARN – Concepts & Applications

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