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Zhankun Tang edited comment on YARN-9721 at 8/7/19 3:20 AM: ------------------------------------------------------------ [~yuan_zac], Thanks for raising this issue! This is very helpful in a hybrid elastic environment. I'm checking this story to get a more clear understanding. BTW, which solution do you prefer? was (Author: tangzhankun): [~yuan_zac], Thanks for raising this issue! This is very helpful in a hybrid environment. I'm checking this story to get a more clear understanding. BTW, which solution do you prefer? > An easy method to exclude a nodemanager from the yarn cluster cleanly > --------------------------------------------------------------------- > > Key: YARN-9721 > URL: https://issues.apache.org/jira/browse/YARN-9721 > Project: Hadoop YARN > Issue Type: Sub-task > Reporter: Zac Zhou > Priority: Major > Attachments: decommission nodes.png > > > If we want to take offline a nodemanager server, nodes.exclude-path > and "rmadmin -refreshNodes" command are used to decommission the server. > But this method cannot clean up the node clearly. Nodemanager servers are > still in Decommissioned Nodes as the attachment shows. > !decommission nodes.png! > YARN-4311 enable a removalTimer to clean up the untracked node. > But the logic of isUntrackedNode method is to restrict. If include-path is > not used, no servers can meet the criteria. Using an include file would make > a potential risk in maintenance. > If yarn cluster is installed on cloud, nodemanager servers are created and > deleted frequently. We need a way to exclude a nodemanager from the yarn > cluster cleanly. Otherwise, the map of rmContext.getInactiveRMNodes() would > keep growing, which would cause a memory issue of RM. -- This message was sent by Atlassian JIRA (v7.6.14#76016) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org