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From "Vrushali C (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6734) Ensure sub-application user is extracted & sent to timeline service
Date Thu, 27 Jul 2017 04:33:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16102691#comment-16102691
] 

Vrushali C commented on YARN-6734:
----------------------------------

bq. I didn't see any advantage sending UGI into backend implementation. Is it required?

I too don't know exactly how we would use it. I am wondering if the authentication related
info that we have to perhaps store with each record would need this user / proxy user / groups
of this user type of info that comes from UGI. 

And since this is an API change for the writer, I was wondering do we want to make it now
itself? If we change it later, would it be an issue? No one calls the writer other than the
collector right? I mean, the AMs or other frameworks wont write to writer directly. 

What do you both think
cc  [~varun_saxena]

> Ensure sub-application user is extracted & sent to timeline service
> -------------------------------------------------------------------
>
>                 Key: YARN-6734
>                 URL: https://issues.apache.org/jira/browse/YARN-6734
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Vrushali C
>            Assignee: Rohith Sharma K S
>         Attachments: YARN-6734-YARN-5355.001.patch, YARN-6734-YARN-5355.002.patch, YARN-6734-YARN-5355.003.patch
>
>
> After a discussion with Tez folks, we have been thinking over introducing a table to
store  sub-application information. YARN-6733
> For example, if a Tez session runs for a certain period as User X and runs a few AMs.
These AMs accept DAGs from other users. Tez will execute these dags with a doAs user. ATSv2
should store this information in a new table perhaps called as "sub_application" table. 
> YARN-6733 tracks the code changes needed for  table schema creation.
> This jira tracks writing to that table, updating the user name fields to include sub-application
user etc. This would mean adding a field to Flow Context which can store an additional user




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