Karthik Kambatla updated YARN-4077:
    Component/s: fairscheduler

> FairScheduler Reservation should wait for most relaxed scheduling delay 
> permitted before issuing reservation
> ------------------------------------------------------------------------------------------------------------
>                 Key: YARN-4077
>                 URL: https://issues.apache.org/jira/browse/YARN-4077
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>            Reporter: Anubhav Dhoot
> Today if an allocation has a node local request that allows for relaxation, 
> we do not wait for the relaxation delay before issuing the reservation. This 
> can be too aggressive. Instead we should allow the scheduling delays of 
> relaxation to expire before we choose to allow reserving a node for the 
> container. This allows for the request to be satisfied on a different node 
> instead.

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