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From "Naganarasimha G R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3692) Allow REST API to set a user generated message when killing an application
Date Wed, 07 Sep 2016 04:47:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-3692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15469534#comment-15469534
] 

Naganarasimha G R commented on YARN-3692:
-----------------------------------------

Thanks for the reply [~steve_l] and [~rohithsharma], but adding a overloaded method to the
interface should not amount to compatability failures right? Also even in the proto we are
adding it as optional so older clients should work with the upgraded server and i see no impact
with downgrades too...

> Allow REST API to set a user generated message when killing an application
> --------------------------------------------------------------------------
>
>                 Key: YARN-3692
>                 URL: https://issues.apache.org/jira/browse/YARN-3692
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Rajat Jain
>            Assignee: Rohith Sharma K S
>         Attachments: 0001-YARN-3692.patch, 0002-YARN-3692.patch, 0003-YARN-3692.patch
>
>
> Currently YARN's REST API supports killing an application without setting a diagnostic
message. It would be good to provide that support.
> *Use Case*
> Usually this helps in workflow management in a multi-tenant environment when the workflow
scheduler (or the hadoop admin) wants to kill a job - and let the user know the reason why
the job was killed. Killing the job by setting a diagnostic message is a very good solution
for that. Ideally, we can set the diagnostic message on all such interface:
> yarn kill -applicationId ... -diagnosticMessage "some message added by admin/workflow"
> REST API { 'state': 'KILLED', 'diagnosticMessage': 'some message added by admin/workflow'}



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