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Alejandro Abdelnur commented on HADOOP-13805: --------------------------------------------- The solution, and I think is a safe one, is that the {{UGI(Subject)}} constructor to set isExternalKeytab to *TRUE*. If an UGI is being created from a Subject, the keytab is always external and it is the Subject creator responsibility to keep the credentials valid. > UGI.getCurrentUser() fails if user does not have a keytab associated > -------------------------------------------------------------------- > > Key: HADOOP-13805 > URL: https://issues.apache.org/jira/browse/HADOOP-13805 > Project: Hadoop Common > Issue Type: Bug > Components: security > Affects Versions: 2.8.0, 2.9.0, 3.0.0-alpha2 > Reporter: Alejandro Abdelnur > Priority: Blocker > > HADOOP-13558 intention was to avoid UGI from trying to renew the TGT when the > UGI is created from an existing Subject as in that case the keytab is not > 'own' by UGI but by the creator of the Subject. > In HADOOP-13558 we introduced a new private UGI constructor > {{UserGroupInformation(Subject subject, final boolean externalKeyTab)}} and > we use with TRUE only when doing a {{UGI.loginUserFromSubject()}}. > The problem is, when we call {{UGI.getCurrentUser()}}, and UGI was created > via a Subject (via the {{UGI.loginUserFromSubject()}} method), we call {{new > UserGroupInformation(subject)}} which will delegate to > {{UserGroupInformation(Subject subject, final boolean externalKeyTab)}} and > that will use externalKeyTab == *FALSE*. > Then the UGI returned by {{UGI.getCurrentUser()}} will attempt to login using > a non-existing keytab if the TGT expired. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org