[ https://issues.apache.org/jira/browse/YARN-914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13709255#comment-13709255 ]
Aaron T. Myers commented on YARN-914: ------------------------------------- Thanks, Luke. > Support graceful decommission of nodemanager > -------------------------------------------- > > Key: YARN-914 > URL: https://issues.apache.org/jira/browse/YARN-914 > Project: Hadoop YARN > Issue Type: Improvement > Affects Versions: 2.0.4-alpha > Reporter: Luke Lu > Assignee: Junping Du > > When NMs are decommissioned for non-fault reasons (capacity change etc.), > it's desirable to minimize the impact to running applications. > Currently if a NM is decommissioned, all running containers on the NM need to > be rescheduled on other NMs. Further more, for finished map tasks, if their > map output are not fetched by the reducers of the job, these map tasks will > need to be rerun as well. > We propose to introduce a mechanism to optionally gracefully decommission a > node manager. -- 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