[ https://issues.apache.org/jira/browse/YARN-4390?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wangda Tan updated YARN-4390: ----------------------------- Attachment: YARN-4390-design.1.pdf Uploaded ver.1 design doc for review. You can jump to "Proposal" part directly if you are already familiar with preemption implementation. > Consider container request size during CS preemption > ---------------------------------------------------- > > Key: YARN-4390 > URL: https://issues.apache.org/jira/browse/YARN-4390 > Project: Hadoop YARN > Issue Type: Sub-task > Components: capacity scheduler > Affects Versions: 3.0.0, 2.8.0, 2.7.3 > Reporter: Eric Payne > Assignee: Wangda Tan > Attachments: YARN-4390-design.1.pdf > > > 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)