Steve Loughran created YARN-3418:
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Summary: AM to be able to set/update web URL and IPC ports
post-registration
Key: YARN-3418
URL: https://issues.apache.org/jira/browse/YARN-3418
Project: Hadoop YARN
Issue Type: Improvement
Components: resourcemanager
Affects Versions: 2.8.0
Reporter: Steve Loughran
Currently the AM can only set the IPC and HTTP(s) ports on AM registration.
This
# creates a possible race condition: the IPC and HTTP ports need to come up
before the app is fully initialised. This is particularly true on
work-preserving AM restarts, as the AM will depend on the list of containers
supplied during registration to build its internal state.
# prevents the AM from changing these values dynamically during application
execution. This matters if the Web or IPC services are hosted not in the AM,
but in a deployed container. If the container is restarted, there's no way to
rebind the services.
A new AM-RM IPC call to publish updated binding information is needed.
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