Nathan Roberts commented on YARN-2056:

[~sunilg] I'm not following the doubt. It may still be hard to get to a correct 
value for what exactly?  As far as completely disabling preemption for the 
queue, that should just be a matter of setting max_ignored_over_capacity to a 
sufficiently large value. To disable, it has to be at least 
((max_capacity/capacity)-1) but it could just as well be something quite large 
and that would effectively prevent preemption. I guess I'm saying it doesn't 
have to be ultra precise. 

> Disable preemption at Queue level
> ---------------------------------
>                 Key: YARN-2056
>                 URL: https://issues.apache.org/jira/browse/YARN-2056
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>    Affects Versions: 2.4.0
>            Reporter: Mayank Bansal
>            Assignee: Eric Payne
> We need to be able to disable preemption at individual queue level

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