Nathan Roberts created YARN-4052:

             Summary: Set SO_KEEPALIVE on NM servers
                 Key: YARN-4052
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
    Affects Versions: 2.7.1
            Reporter: Nathan Roberts

Shuffle handler does not set SO_KEEPALIVE so we've seen cases where FDs/sockets 
get stuck in ESTABLISHED state indefinitely because the server did not see the 
client leave (network cut or otherwise). 

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