Eric Payne created YARN-4390: -------------------------------- Summary: Consider container request size during CS preemption Key: YARN-4390 URL: https://issues.apache.org/jira/browse/YARN-4390 Project: Hadoop YARN Issue Type: Bug Components: capacity scheduler Affects Versions: 3.0.0, 2.8.0, 2.7.3 Reporter: Eric Payne Assignee: Eric Payne
There are multiple reasons why preemption could unnecessarily preempt containers. One is that an app could be requesting a large container (say 8-GB), and the preemption monitor could conceivably preempt multiple containers (say 8, 1-GB containers) in order to fill the large container request. These smaller containers would then be rejected by the requesting AM and potentially given right back to the preempted app. -- This message was sent by Atlassian JIRA (v6.3.4#6332)