Eric Payne created YARN-4390:

             Summary: Consider container request size during CS preemption
                 Key: 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

Reply via email to