[jira] [Commented] (YARN-5674) FairScheduler handles "dots" in user names inconsistently in the config

["loushang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-5674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16022404#comment-16022404 ] 

loushang commented on YARN-5674:
--------------------------------

I wonder what the situation is now?

i came across this issue these days

> FairScheduler handles "dots" in user names inconsistently in the config
> -----------------------------------------------------------------------
>
>                 Key: YARN-5674
>                 URL: https://issues.apache.org/jira/browse/YARN-5674
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.6.0
>            Reporter: Wilfred Spiegelenburg
>            Assignee: Wilfred Spiegelenburg
>
> A user name can contain a dot because it could be used as the queue name we replace the dot with a defined separator. When defining queues in the configuration for users containing a dot we expect that the dot is replaced by the "\_dot\_" string.
> In the user limits we do not do that and user limits need a normal dot in the user name. This is confusing when you create a scheduler configuration in some places you need to replace in others you do not. This can cause issue when user limits are not enforced as expected.
> We should use one way to specify the user and since the queue naming can not be changed we should also use the same "\_dot\_" in the user limits and enforce correctly.



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