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From "Jonathan Eagles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2375) Allow enabling/disabling timeline server per framework
Date Thu, 19 Mar 2015 16:05:39 GMT

    [ https://issues.apache.org/jira/browse/YARN-2375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14369607#comment-14369607
] 

Jonathan Eagles commented on YARN-2375:
---------------------------------------

[~hitesh], I think the part that will help you gain understanding is that RM itself has a
timeline client that it uses to renew the delegation tokens given at job submission time.
If the RM has this flag off then all jobs submitted with a timeline service delegation token
will fail to submit. If the RM has this flag on, then the timeline service integration is
on for all clients a situation that has to be avoided considering the scale limitations and
maturity of the timeline service.

For Tez, possibly we can stop looking at the yarn.timeline-service.enabled and fetch our own
delegation token? Another approach is to fallback to simple history when timeline-service
is disabled.

> Allow enabling/disabling timeline server per framework
> ------------------------------------------------------
>
>                 Key: YARN-2375
>                 URL: https://issues.apache.org/jira/browse/YARN-2375
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Jonathan Eagles
>            Assignee: Mit Desai
>             Fix For: 2.7.0
>
>         Attachments: YARN-2375.1.patch, YARN-2375.patch, YARN-2375.patch, YARN-2375.patch,
YARN-2375.patch
>
>
> This JIRA is to remove the ats enabled flag check within the TimelineClientImpl. Example
where this fails is below.
> While running secure timeline server with ats flag set to disabled on resource manager,
Timeline delegation token renewer throws an NPE. 



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