Jim Brennan created YARN-8027:

             Summary: Setting hostname of docker container breaks for 
--net=host in docker 1.13
                 Key: YARN-8027
                 URL: https://issues.apache.org/jira/browse/YARN-8027
             Project: Hadoop YARN
          Issue Type: Bug
          Components: yarn
    Affects Versions: 3.0.0
            Reporter: Jim Brennan
            Assignee: Jim Brennan

In DockerLinuxContainerRuntime:launchContainer, we are adding the --hostname 
argument to the docker run command to set the hostname in the container to 
something like:  ctr-e84-1520889172376-0001-01-000001.

This does not work when combined with the --net=host command line option in 
Docker 1.13.1.  It causes multiple failures when the client tries to resolve 
the hostname and it fails.

We haven't seen this before because we were using docker 1.12.6 which seems to 
ignore --hostname when you are using --net=host.

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