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Wangda Tan commented on YARN-7496: ---------------------------------- Thanks [~eepayne] for confirming this, I will commit this tomorrow if no objections. > 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