Daniel Templeton created YARN-6863:
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Summary: Fair Scheduler preemption thread should check that a
container has the needed resources before adding it to the preemption list
Key: YARN-6863
URL: https://issues.apache.org/jira/browse/YARN-6863
Project: Hadoop YARN
Issue Type: Bug
Components: fairscheduler
Affects Versions: 3.0.0-alpha4
Reporter: Daniel Templeton
Priority: Minor
In {{FSPreemptionThread.identifyContainersToPreempt()}}, we add every container
we encounter to the preemption list until we meet the desired target. As we
head into resource types, that behavior will become more of a problem, but it's
technically an issue already because the fair scheduler supports requests with
0 vcores or 0 memory.
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