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https://issues.apache.org/jira/browse/YARN-561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13630681#comment-13630681
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Hitesh Shah commented on YARN-561:
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Take a look at ContainerLaunch#sanitizeEnv() and how it handles non-modifiable
environment variables. The above mentioned env variables should also fall into
the non-modifiable category.
> Nodemanager should set some key information into the environment of every
> container that it launches.
> -----------------------------------------------------------------------------------------------------
>
> Key: YARN-561
> URL: https://issues.apache.org/jira/browse/YARN-561
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Hitesh Shah
> Assignee: Xuan Gong
> Labels: usability
>
> Information such as containerId, nodemanager hostname, nodemanager port is
> not set in the environment when any container is launched.
> For an AM, the RM does all of this for it but for a container launched by an
> application, all of the above need to be set by the ApplicationMaster.
> At the minimum, container id would be a useful piece of information. If the
> container wishes to talk to its local NM, the nodemanager related information
> would also come in handy.
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