jaehoon ko created YARN-4260:
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Summary: Check NodeManager's validity based on hostname(IP) and
port
Key: YARN-4260
URL: https://issues.apache.org/jira/browse/YARN-4260
Project: Hadoop YARN
Issue Type: Improvement
Components: resourcemanager
Affects Versions: 2.7.1
Reporter: jaehoon ko
There can be situations where multiple NMs are running on the same host;
emulating multi-host YARN cluster on one host, deploying dockerized NMs that
share network stack. In such cases, RM should be able to distinguish NMs
running on the same host. However, current implementation checks validity of NM
based only on hostname (NodesListManager.isValidNode()). So it is not possible
to distinguish a specific NM from other NMs on the same host.
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