Karthik Kambatla created YARN-4866:
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Summary: FairScheduler: AMs can consume all vcores leading to a
livelock when using FAIR policy
Key: YARN-4866
URL: https://issues.apache.org/jira/browse/YARN-4866
Project: Hadoop YARN
Issue Type: Bug
Components: fairscheduler
Affects Versions: 2.8.0
Reporter: Karthik Kambatla
Assignee: Karthik Kambatla
The maxAMShare uses the queue's policy for enforcing limits. When using FAIR
policy, this considers only memory. If there are fewer vcores on the cluster,
the AMs can end up taking all the vcores leading to a livelock.
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