Support task preemption in Capacity Scheduler
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Key: HADOOP-6096
URL: https://issues.apache.org/jira/browse/HADOOP-6096
Project: Hadoop Core
Issue Type: New Feature
Components: contrib/capacity-sched
Reporter: Tsz Wo (Nicholas), SZE
Without preemption, it is not possible to guarantee capacity since long running
jobs may occupy task slots of an arbitrarily long time.
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