March 2014
Intermediate to advanced
400 pages
10h 7m
English
book
Apache Hadoop™ YARN: Moving beyond MapReduce and Batch Processing with Apache Hadoop™ 2
by Arun C. Murthy, Vinod Kumar Vavilapalli, Doug Eadline, Joseph Niemiec, Jeff Markham
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7. Apache Hadoop YARN Architecture Guide
Chapter 4 provided a functional overview of YARN components and a brief description of how a YARN application flows through the system. In this chapter, we will delve deeper into the inner workings of YARN and describe how the system is implemented from the ground up.
YARN separates all of its functionality into two layers: a platform layer responsible for resource management and what is called first-level scheduling, and a framework layer that coordinates application execution and second-level scheduling. Specifically, a per-cluster ResourceManager tracks usage of resources, monitors the health of various nodes in the cluster, enforces resource-allocation invariants, and arbitrates conflicts among users. ...
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