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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (YARN-6808) Allow Schedulers to return OPPORTUNISTIC containers when queues go over configured capacity
Date Thu, 13 Jul 2017 01:21:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16084955#comment-16084955
] 

Arun Suresh edited comment on YARN-6808 at 7/13/17 1:20 AM:
------------------------------------------------------------

Attaching initial patch to vet the idea.
* Currently, only the allocation path is implemented - the Auto-promote aspect needs some
more bookkeeping and can probably be handled in a separate JIRA
* It essentially checks if the incomning requests from an app exceeds its headroom.. and if
so, are returned OPPORTUNISTIC containers.
* I have added a test case in TestCapacityScheduler, but the change is pretty Scheduler Agnostic.


was (Author: asuresh):
Attaching initial patch to vet the idea.
* Currently, only the allocation patch is implemented - the Auto-promote aspect needs some
more bookkeeping and can probably be handled in a separate JIRA
* It essentially checks if the incomning requests from an app exceeds its headroom.. and if
so, are returned OPPORTUNISTIC containers.
* I have added a test case in TestCapacityScheduler, but the change is pretty Scheduler Agnostic.

> Allow Schedulers to return OPPORTUNISTIC containers when queues go over configured capacity
> -------------------------------------------------------------------------------------------
>
>                 Key: YARN-6808
>                 URL: https://issues.apache.org/jira/browse/YARN-6808
>             Project: Hadoop YARN
>          Issue Type: New Feature
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>         Attachments: YARN-6808.001.patch
>
>
> This is based on discussions with [~kasha] and [~kkaranasos].
> Currently, when a Queues goes over capacity, apps on starved queues must wait either
for containers to complete or for them to be pre-empted by the scheduler to get resources.
> This JIRA proposes to allow Schedulers to:
> # Allocate all containers over the configured queue capacity/weight as OPPORTUNISTIC.
> # Auto-promote running OPPORTUNISTIC containers of apps as and when their GUARANTEED
containers complete.



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