Craig Welch created YARN-3510: --------------------------------- Summary: Create an extension of ProportionalCapacityPreemptionPolicy which preempts a number of containers from each application in a way which respects fairness Key: YARN-3510 URL: https://issues.apache.org/jira/browse/YARN-3510 Project: Hadoop YARN Issue Type: Improvement Components: yarn Reporter: Craig Welch Assignee: Craig Welch
The ProportionalCapacityPreemptionPolicy preempts as many containers from applications as it can during it's preemption run. For fifo this makes sense, as it is prempting in reverse order & therefore maintaining the primacy of the "oldest". For fair ordering this does not have the desired effect - instead, it should preempt a number of containers from each application which maintains a fair balance /close to a fair balance between them -- This message was sent by Atlassian JIRA (v6.3.4#6332)