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Wangda Tan commented on YARN-4692: ---------------------------------- [~asuresh], Thanks for reply, I can understand your concern now. There're two different container priorities: - Across application container priority, this inherits application priority, and we have ACL and/or quota ensures not everybody can claim their containers are most important. - Container priority within an app, application can decide which container should be allocated first and which container should be preempted first. While doing preemption, - For across application priority, framework should strictly enforce it. - For priority within an application, when scheduler puts container to to-be-preempted list, application will be notified, and it has chance to return another container other than selected. Thoughts? > [Umbrella] Simplified and first-class support for services in YARN > ------------------------------------------------------------------ > > Key: YARN-4692 > URL: https://issues.apache.org/jira/browse/YARN-4692 > Project: Hadoop YARN > Issue Type: New Feature > Reporter: Vinod Kumar Vavilapalli > Assignee: Vinod Kumar Vavilapalli > Attachments: > YARN-First-Class-And-Simplified-Support-For-Services-v0.pdf > > > YARN-896 focused on getting the ball rolling on the support for services > (long running applications) on YARN. > I’d like propose the next stage of this effort: _Simplified and first-class > support for services in YARN_. > The chief rationale for filing a separate new JIRA is threefold: > - Do a fresh survey of all the things that are already implemented in the > project > - Weave a comprehensive story around what we further need and attempt to > rally the community around a concrete end-goal, and > - Additionally focus on functionality that YARN-896 and friends left for > higher layers to take care of and see how much of that is better integrated > into the YARN platform itself. -- This message was sent by Atlassian JIRA (v6.3.4#6332)