Which MapReduce v2 (MR2/YARN) daemon is a per-machine slave responsible for launching
application containers and monitoring application resources usage?
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
Should be D ?
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Application master
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I agree with the answer. C
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