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https://issues.apache.org/jira/browse/YARN-2424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14104196#comment-14104196
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Owen O'Malley commented on YARN-2424:
-------------------------------------

Alejandro, after I told you that users have run in production with that 
setting, it is very rude to say that removing the feature is not breakage. It 
is *obviously* breakage.

A warning makes sense, but it should only be once when the ResourceManager 
boots. It is a system level configuration and warning more than once is wrong.

> LCE should support non-cgroups, non-secure mode
> -----------------------------------------------
>
>                 Key: YARN-2424
>                 URL: https://issues.apache.org/jira/browse/YARN-2424
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.3.0, 2.4.0, 2.5.0, 2.4.1
>            Reporter: Allen Wittenauer
>            Priority: Blocker
>         Attachments: YARN-2424.patch
>
>
> After YARN-1253, LCE no longer works for non-secure, non-cgroup scenarios.  
> This is a fairly serious regression, as turning on LCE prior to turning on 
> full-blown security is a fairly standard procedure.



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