[jira] [Created] (YARN-6734) Ensure sub-application user is extracted & sent to timeline service

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

Vrushali C created YARN-6734:
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             Summary: 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
            Reporter: Vrushali C



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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