[ https://issues.apache.org/jira/browse/YARN-11112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
chaosju reassigned YARN-11112: ------------------------------ Assignee: Yuanbo Liu > Avoid renewing delegation token when app is first submitted to RM > ----------------------------------------------------------------- > > Key: YARN-11112 > URL: https://issues.apache.org/jira/browse/YARN-11112 > Project: Hadoop YARN > Issue Type: Improvement > Reporter: Yuanbo Liu > Assignee: Yuanbo Liu > Priority: Major > Labels: pull-request-available > Attachments: image-2022-04-19-10-34-59-573.png, > image-2022-04-19-10-38-01-194.png > > Time Spent: 2h 10m > Remaining Estimate: 0h > > When auth is enabled by NameNode, then delegation token is required if > application needs to acess files/directoies. We find that when app is first > submitted to RM, RM renewer will renew app token no matter whether token is > expired or not. Renewing token is a bit heavy since it uses global write > lock. Here is the result when delegation token is required in a very busy > cluster. > !image-2022-04-19-10-34-59-573.png|width=515,height=302! > !image-2022-04-19-10-38-01-194.png|width=490,height=290! > -- This message was sent by Atlassian Jira (v8.20.7#820007) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org