Daniel Templeton created YARN-7397:
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Summary: Reduce lock contention in FairScheduler#getAppWeight()
Key: YARN-7397
URL: https://issues.apache.org/jira/browse/YARN-7397
Project: Hadoop YARN
Issue Type: Improvement
Components: fairscheduler
Affects Versions: 3.0.0-beta1
Reporter: Daniel Templeton
Assignee: Daniel Templeton
In profiling the fair scheduler, a large amount of time is spent waiting to get
the lock in {{FairScheduler.getAppWeight()}}, when the lock isn't actually
needed. This patch reduces the scope of the lock to eliminate that contention.
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