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https://issues.apache.org/jira/browse/TEZ-2205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14377562#comment-14377562
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Rohini Palaniswamy commented on TEZ-2205:
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I prefer 3). For jobs launched through Oozie it is easy to turn off ATS via 
Oozie server side setting and this might be required in the near future now and 
then considering the issues we are facing with ATS. Since tez-site.xml for 
those jobs come from HDFS, it is not easy to change the tez ATS Logger easily 
(replacing the file on HDFS is more manual and can cause running jobs to fail 
as LocalResource time has changed) and so do not like 1). Also having to change 
multiple settings to turn off something is cumbersome.  2) is what is happening 
now but the problem I see is that it impacts performance as time is wasted 
trying to connect to ATS and failing due to lack of authentication. 

> Tez still tries to post to ATS when yarn.timeline-service.enabled=false
> -----------------------------------------------------------------------
>
>                 Key: TEZ-2205
>                 URL: https://issues.apache.org/jira/browse/TEZ-2205
>             Project: Apache Tez
>          Issue Type: Sub-task
>    Affects Versions: 0.6.1
>            Reporter: Chang Li
>            Assignee: Chang Li
>         Attachments: TEZ-2205.wip.patch
>
>
> when set yarn.timeline-service.enabled=false, Tez still tries posting to ATS, 
> but hits error as token is not found. Does not fail the job because of the 
> fix to not fail job when there is error posting to ATS. But it should not be 
> trying to post to ATS in the first place.



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