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