Young Chen reassigned YARN-6828:

    Assignee: Young Chen  (was: Arun Suresh)

> [Umbrella] Container preemption using OPPORTUNISTIC containers
> --------------------------------------------------------------
>                 Key: YARN-6828
>                 URL: https://issues.apache.org/jira/browse/YARN-6828
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Arun Suresh
>            Assignee: Young Chen
>            Priority: Major
> This is based on discussions with [~kasha] and [~kkaranasos].
> Currently, the YARN schedulers selects containers for preemption only in 
> response to a starved queue / app's request. We propose to allow the 
> Schedulers to mark containers that are allocated over queue 
> capacity/fair-share as Opportunistic containers.
> This JIRA proposes to allow Schedulers to:
> # Allocate all containers over the configured queue capacity/weight as 
> # Auto-promote running OPPORTUNISTIC containers of apps as and when their 
> GUARANTEED containers complete.

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