Junping Du created HADOOP-8474:
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Summary: Make locatlity in YARN's container assignment and task
scheduling pluggable for other deployment topology
Key: HADOOP-8474
URL: https://issues.apache.org/jira/browse/HADOOP-8474
Project: Hadoop Common
Issue Type: Sub-task
Affects Versions: 2.0.0-alpha, 1.0.0
Reporter: Junping Du
There are several classes in YARN’s container assignment and task scheduling
algorithms that relate to data locality which were updated to give preference
to running a container on other locality besides node-local and rack-local
(like nodegroup-local). This propose to make these data structure/algorithms
pluggable, like: SchedulerNode, RMNodeImpl, etc. The inner class
ScheduledRequests was made a package level class to it would be easier to
create a subclass, ScheduledRequestsWithNodeGroup.
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