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Which YARN daemon or service negotiates map and reduce Containers from the Scheduler, tracking their status an

Which YARN daemon or service negotiates map and reduce Containers from the Scheduler,
tracking their status and monitoring for progress?

PrepAway - Latest Free Exam Questions & Answers

A.
ResourceManager

B.
ApplicationMaster

C.
NodeManager

D.
ApplicationManager

Explanation:
http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1-latest/bk_using-apachehadoop/content/yarn_overview.html

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