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