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From "Hitesh Shah (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-561) Nodemanager should set some key information into the environment of every container that it launches.
Date Fri, 12 Apr 2013 21:16:16 GMT

    [ https://issues.apache.org/jira/browse/YARN-561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13630635#comment-13630635
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Hitesh Shah commented on YARN-561:
----------------------------------

@Xuan, one thing to be careful of this certain env settings should only be set by the NodeManager
when it launches the container and not by an application. So you would need a notion of certain
whitelist environment variables that should be set only by the NM and not overridden by the
env in CLC provided by the application. 
                
> 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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