Min Shen 28b947603b YARN-5543. ResourceManager SchedulingMonitor could potentially terminate the preemption checker thread. Contributed by Min Shen and Jonathan Hung.
(cherry picked from commit 2ada100da7cfe12946e43da2929bd80c2a8bd833)
Conflicts:
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/monitor/SchedulingMonitor.java
2017-05-11 13:47:12 -07:00
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