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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9698) Long running Balancer should renew TGT
Date Fri, 12 Feb 2016 22:21:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15145418#comment-15145418
] 

Chris Nauroth commented on HDFS-9698:
-------------------------------------

Running balancer as an interactive process, the assumption is that kinit has already run,
and there is a ticket sitting in cache.  After the renew_lifetime, there isn't anything else
the balancer process can do to help.  It can't automatically kinit again or otherwise prompt
the user to login again.

Maybe it would be nice to give the balancer the ability to login from a keytab?  That way,
the RPC client would re-login from the keytab after expiration, which means the process could
remain authenticated indefinitely.  With some people wanting to run balancer non-stop in "daemon
mode", that might be a reasonable feature to add.

> Long running Balancer should renew TGT
> --------------------------------------
>
>                 Key: HDFS-9698
>                 URL: https://issues.apache.org/jira/browse/HDFS-9698
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer & mover, security
>    Affects Versions: 2.6.3
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>         Attachments: HDFS-9698.00.patch
>
>
> When the {{Balancer}} runs beyond the configured TGT lifetime, the current logic won't
renew TGT.



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