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https://issues.apache.org/jira/browse/YARN-8675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16594107#comment-16594107
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Hudson commented on YARN-8675:
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SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14840 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14840/])
YARN-8675. Remove default hostname for docker containers when net=host.
(billie: rev 05b2bbeb357d4fa03e71f2bfd5d8eeb0ea6c3f60)
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DockerLinuxContainerRuntime.java
> 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
> Affects Versions: 3.1.0, 3.1.1
> Reporter: Yesha Vora
> Assignee: Suma Shivaprasad
> Priority: Major
> Labels: Docker
> Fix For: 3.2.0, 3.1.2
>
> Attachments: YARN-8675.1.patch, YARN-8675.2.patch, YARN-8675.3.patch,
> YARN-8675.4.patch
>
>
> 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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