Sandy Ryza created YARN-736: ------------------------------- Summary: Add a multi-resource fair sharing metric Key: YARN-736 URL: https://issues.apache.org/jira/browse/YARN-736 Project: Hadoop YARN Issue Type: Improvement Components: scheduler Affects Versions: 2.0.4-alpha Reporter: Sandy Ryza Assignee: Sandy Ryza
Currently, at a regular interval, the fair scheduler computes a fair memory share for each queue and application inside it. This fair share is not used for scheduling decisions, but is displayed in the web UI, exposed as a metric, and used for preemption decisions. With DRF and multi-resource scheduling, assigning a memory share as the fair share metric to every queue no longer makes sense. It's not obvious what the replacement should be, but probably something like fractional fairness within a queue, or distance from an ideal cluster state. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira