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https://issues.apache.org/jira/browse/YARN-8675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suma Shivaprasad updated YARN-8675:
-----------------------------------
    Description: 
Applications like the Spark AM currently do not run as a YARN service and 
setting hostname breaks driver/executor communication if docker version 
>=1.13.1 , especially with wire-encryption turned on.

YARN-8027 sets the hostname if YARN DNS is enabled. But the cluster could have 
a mix of YARN service/native Applications.

The proposal is to not set the hostname when "host" networking mode is enabled.

  was:
Applications like the Spark AM currently do not run as a YARN service and 
setting hostname breaks driver/executor communication if docker version 
>=1.13.1 , especially with wire-encryption turned on.

The proposal is to not set the hostname when "host" networking mode is enabled.


> Setting hostname of docker container breaks with "host" networking mode for 
> Apps which do not run as a YARN service
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-8675
>                 URL: https://issues.apache.org/jira/browse/YARN-8675
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Suma Shivaprasad
>            Assignee: Suma Shivaprasad
>            Priority: Major
>
> Applications like the Spark AM currently do not run as a YARN service and 
> setting hostname breaks driver/executor communication if docker version 
> >=1.13.1 , especially with wire-encryption turned on.
> YARN-8027 sets the hostname if YARN DNS is enabled. But the cluster could 
> have a mix of YARN service/native Applications.
> The proposal is to not set the hostname when "host" networking mode is 
> enabled.



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