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kyungwan nam commented on YARN-8179: ------------------------------------ Thanks [~eepayne], [~sunilg] for your comments. I'll work on new patch including test case shortly. > Preemption does not happen due to natural_termination_factor when DRF is used > ----------------------------------------------------------------------------- > > Key: YARN-8179 > URL: https://issues.apache.org/jira/browse/YARN-8179 > Project: Hadoop YARN > Issue Type: Bug > Reporter: kyungwan nam > Assignee: kyungwan nam > Priority: Major > Attachments: YARN-8179.001.patch > > > cluster > * DominantResourceCalculator > * QueueA : 50 (capacity) ~ 100 (max capacity) > * QueueB : 50 (capacity) ~ 50 (max capacity) > all of resources have been allocated to QueueA. (all Vcores are allocated to > QueueA) > if App1 is submitted to QueueB, over-utilized QueueA should be preempted. > but, I’ve met the problem, which preemption does not happen. it caused that > App1 AM can not allocated. > when App1 is submitted, pending resources for asking App1 AM would be > <Memory:2048, Vcores:1> > so, Vcores which need to be preempted from QueueB should be 1. > but, it can be 0 due to natural_termination_factor (default is 0.2) > we should guarantee that resources not to be 0 even though applying > natural_termination_factor -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org