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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-3418) AM to be able to set/update web URL and IPC ports post-registration
Date Mon, 30 Mar 2015 10:53:54 GMT
Steve Loughran created YARN-3418:
------------------------------------

             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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