[
https://issues.apache.org/jira/browse/YARN-7496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Eric Payne updated YARN-7496:
-----------------------------
Attachment: YARN-7496.001.branch-2.8.patch
Attaching a fix for branch-2.8. This change is in
{{LeafQueue#computeUserLimit}}. It should only affect preemption user limit
calculations and should not affect assignment user limit calculations.
Since it does touch the computations for user limit, I would really appreciate
it if [~sunilg], [~leftnoteasy], or [~jlowe] could take a look at it.
> CS Intra-queue preemption user-limit calculations are not in line with
> LeafQueue user-limit calculations
> --------------------------------------------------------------------------------------------------------
>
> Key: YARN-7496
> URL: https://issues.apache.org/jira/browse/YARN-7496
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.8.2
> Reporter: Eric Payne
> Assignee: Eric Payne
> Attachments: YARN-7496.001.branch-2.8.patch
>
>
> Only a problem in 2.8.
> Preemption could oscillate due to the difference in how user limit is
> calculated between 2.8 and later releases.
> Basically (ignoring ULF, MULP, and maybe others), the calculation for user
> limit on the Capacity Scheduler side in 2.8 is {{total used resources /
> number of active users}} while the calculation in later releases is {{total
> active resources / number of active users}}. When intra-queue preemption was
> backported to 2.8, it's calculations for user limit were more aligned with
> the latter algorithm, which is in 2.9 and later releases.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
