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From "Sunil Govindan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14080) UserGroupInformation#loginUserFromKeytab does not load hadoop tokens ?
Date Mon, 10 Sep 2018 04:32:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16608716#comment-16608716
] 

Sunil Govindan commented on HADOOP-14080:
-----------------------------------------

Moved to 3.3.0 given the lack of activity, please revert if we really need this in 3.2.0

> UserGroupInformation#loginUserFromKeytab does not load hadoop tokens ? 
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-14080
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14080
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Jian He
>            Priority: Critical
>
> Found that UserGroupInformation#loginUserFromKeytab will not try to load hadoop tokens
from HADOOP_TOKEN_FILE_LOCATION as loginUserFromSubject method does.  I know typically, if
you have the keytab, you probably won't need the token, but  is this an expected behavior
?
> The problem with this is that suppose a long running app on YARN has its own keytabs,
it does login via UserGroupInformation#loginUserFromKeytab, however, it will not load the
hadoop tokens passed by YARN and YARN requires the token to be present for communication e.g.
AM - RM communication. 



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