Jo Desmet commented on YARN-5271:

Note that such tight coupling should not be required, not so that we have that 
library dependency between spark and Yarn. The idea of Jersey is exactly to 
avoid this type of tight coupling between two application frameworks. I think 
it is still a huge drawback of not having the History Server up. I think it is 
1./ Spark's job to have enough decoupling in place; 2./ Yarn to evolve fast 
enough, being able to use latest libraries and benefit from added features and 

> ATS client doesn't work with Jersey 2 on the classpath
> ------------------------------------------------------
>                 Key: YARN-5271
>                 URL: https://issues.apache.org/jira/browse/YARN-5271
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: client, timelineserver
>    Affects Versions: 2.7.2
>            Reporter: Steve Loughran
>            Assignee: Weiwei Yang
>         Attachments: YARN-5271.01.patch, YARN-5271.branch-2.01.patch
> see SPARK-15343 : once Jersey 2 is on the CP, you can't instantiate a 
> timeline client, *even if the server is an ATS1.5 server and publishing is 
> via the FS*

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