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From "Subroto Sanyal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9567) Provide auto-renewal for keytab based logins
Date Wed, 30 Sep 2015 08:42:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14936565#comment-14936565
] 

Subroto Sanyal commented on HADOOP-9567:
----------------------------------------

hi [~qwertymaniac],
Even the the method _org.apache.hadoop.security.UserGroupInformation.loginUserFromSubject(Subject)_
has no check to make sure if the thread is already spawned or not.
Will this spawn a thread every time the method is invoked? Atleast I can see a check in the
code of Hadoop 1.0.3 to prevent this.

> Provide auto-renewal for keytab based logins
> --------------------------------------------
>
>                 Key: HADOOP-9567
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9567
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 2.0.0-alpha
>            Reporter: Harsh J
>            Priority: Minor
>
> We do a renewal for cached tickets (obtained via kinit before using a Hadoop application)
but we explicitly seem to avoid doing a renewal for keytab based logins (done from within
the client code) when we could do that as well via a similar thread.



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