Junping Du created YARN-3445:

             Summary: NM notify RM on running Apps in NM-RM heartbeat
                 Key: YARN-3445
                 URL: https://issues.apache.org/jira/browse/YARN-3445
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: nodemanager, resourcemanager
    Affects Versions: 2.7.0
            Reporter: Junping Du
            Assignee: Junping Du

Per discussion in YARN-3334, we need filter out unnecessary collectors info 
from RM in heartbeat response. Our propose is to add additional field for 
running apps in NM heartbeat request, so RM only send collectors for local 
running apps back. This is also needed in YARN-914 (graceful decommission) that 
if no running apps in NM which is in decommissioning stage, it will get 
decommissioned immediately. 

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