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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6130) [ATSv2 Security] Generate a delegation token for AM when app collector is created and pass it to AM via NM and RM
Date Thu, 20 Jul 2017 09:52:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16094452#comment-16094452

Varun Saxena commented on YARN-6130:

Thanks [~rohithsharma] for the review.

bq. newly added proto i.e AMCollectorInfoProto has rm_identifier and version. Why does these
required for AM?
The intention here is to avoid updating the token in AM UGI on every allocate response. We
can potentially cache the RMID and version to ensure that the version of token coming from
RM is same as the one already updated by AM in its UGI. Thoughts?

bq. I see AppCollectorData#hasSameVersion added. Where it will be used? Trying to understanding
its usage.
Not required. Was planning to use it for use case above. A similar check would be required
in AMCollectorInfo instead.

bq.  IAC, collector_address and token can be kept in separate proto may be name it as generic
i.e CollectorInfo or any other?
Ok. We can name it as CollectorInfo instead of AMCollectorInfo.

bq. for every heartbeat, we are creating AMCollectorInfo object. Could it be cached?
Yes, it can be in RMAppImpl.

> [ATSv2 Security] Generate a delegation token for AM when app collector is created and
pass it to AM via NM and RM
> -----------------------------------------------------------------------------------------------------------------
>                 Key: YARN-6130
>                 URL: https://issues.apache.org/jira/browse/YARN-6130
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Varun Saxena
>            Assignee: Varun Saxena
>              Labels: yarn-5355-merge-blocker
>         Attachments: YARN-6130-YARN-5355.01.patch, YARN-6130-YARN-5355.02.patch, YARN-6130-YARN-5355.03.patch,

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