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https://issues.apache.org/jira/browse/YARN-7425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shen Yinjie reassigned YARN-7425:
---------------------------------
Assignee: Shen Yinjie
> Failed to renew delegation token when RM user's TGT is expired
> ---------------------------------------------------------------
>
> Key: YARN-7425
> URL: https://issues.apache.org/jira/browse/YARN-7425
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn
> Affects Versions: 2.8.2
> Reporter: Shen Yinjie
> Assignee: Shen Yinjie
> Priority: Critical
> Attachments: rm_log.png
>
>
> we have a secure hadoop cluster with namenode federation.
> submit job fails after kerberos TGT maxLifeTime expired(default 24h), client
> log shows" failed to renew token: HDFS_DELEGATION_TOKEN...".
> check rm log, found rm tgt is expired but not triggers relogin(),just retry
> and fail...
> (rm log see screenshot)
> digging in code:
> when rm tries to renewToken(),
> UserGroupInformation.getLoginUser()="rm",
> but UserGroupInformation.getCurrentUser()="testUser".
> this causes Client.shouldAuthenticateOverKrb() returns false, thus cant
> trigger reloginFromKeytab() or reloginFromTicketCache().
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