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Steve Loughran commented on YARN-3418: -------------------------------------- ...catching up on this. I quite like the idea of reusing the same message. # no new messages, protobuf pain... # API is available to all apps built against Hadoop 2.2+ JARs: no linking problems > 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 > Assignee: Rohith Sharma K S > > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)