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From "Vrushali C (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6733) Add table for storing sub-application entities
Date Thu, 13 Jul 2017 23:13:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16086576#comment-16086576
] 

Vrushali C commented on YARN-6733:
----------------------------------

hey [~rohithsharma]

So I remembered why we wanted to put in the actual user name at the end of the row key (not
the sub app user but the actual user who is running the app master). We wanted to do that
to protect against some sub-app user who may be compromised and decides to go on a writing
spree and overwrites other users' data. So we were going to add in the AM user at the end
so that we know which user is writing this. 

I will update the patch shortly. 

> Add table for storing sub-application entities
> ----------------------------------------------
>
>                 Key: YARN-6733
>                 URL: https://issues.apache.org/jira/browse/YARN-6733
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Vrushali C
>            Assignee: Vrushali C
>         Attachments: IMG_7040.JPG, YARN-6733-YARN-5355.001.patch, YARN-6733-YARN-5355.002.patch
>
>
> After a discussion with Tez folks, we have been thinking over introducing a table to
store  sub-application information.
> 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. 
> This jira tracks the code changes needed for  table schema creation.
> I will file other jiras for writing to that table, updating the user name fields to include
sub-application user etc.



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