Tao Yang created YARN-8925:
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Summary: Updating distributed node attributes only when necessary
Key: YARN-8925
URL: https://issues.apache.org/jira/browse/YARN-8925
Project: Hadoop YARN
Issue Type: Improvement
Components: resourcemanager
Affects Versions: 3.2.1
Reporter: Tao Yang
Assignee: Tao Yang
Currently if distributed node attributes exist, even though there is no change,
updating for distributed node attributes will happen in every heartbeat between
NM and RM. Updating process will hold NodeAttributesManagerImpl#writeLock and
may have some influence in a large cluster. We have found nodes UI of a large
cluster is opened slowly and most time it's waiting for the lock in
NodeAttributesManagerImpl. I think this updating should be called only when
necessary to enhance the performance of related process.
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