[jira] [Commented] (TEZ-688) Make use of DAG specific credentials in Session mode

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

    [ https://issues.apache.org/jira/browse/TEZ-688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13867100#comment-13867100 ] 

Hitesh Shah commented on TEZ-688:
---------------------------------

Are credentials that heavy that there is need for additional complexity to optimize whether to send them or not? 
If the UGI creation is a performance overhead, that could be easily in YarnTezDAGChild by doing a comparison of previous and new credentials and only creating a new UGI when needed.

User code can also be invoked in vertex manager/edge managers. Is that being handled in a separate jira?




> Make use of DAG specific credentials in Session mode
> ----------------------------------------------------
>
>                 Key: TEZ-688
>                 URL: https://issues.apache.org/jira/browse/TEZ-688
>             Project: Apache Tez
>          Issue Type: Sub-task
>            Reporter: Siddharth Seth
>            Assignee: Siddharth Seth
>         Attachments: TEZ-688.1.txt, TEZ-688.wip.txt
>
>
> Once TEZ-395 is fixed, DAG specific credentials need to be used in the AM, as well as made available to containers executing tasks belonging to the DAG.



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