Yufei Gu created YARN-4792:
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Summary: FairScheduler should do sanity checks on its configuration
Key: YARN-4792
URL: https://issues.apache.org/jira/browse/YARN-4792
Project: Hadoop YARN
Issue Type: Improvement
Components: fairscheduler, yarn
Affects Versions: 2.9.0
Reporter: Yufei Gu
Assignee: Yufei Gu
The FairScheduler does not perform any sanity checks on the configuration that
it uses.
This can lead to a configuration that is legal but does not make sense in a
cluster to use, and causes support cases to be filed:
limit the root queue to a certain size for memory or vcores: the cluster
resources limit the root queue already and there should be no need for an extra
artificial limit
setting max running applications on a leaf queue larger than the parent queue(s)
setting max running applications larger than the queue size (example: minimum
vcore allocation * number of apps > total vcores in the queue)
There are possibly more checks
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