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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HDFS-1364) HFTP client should support relogin from keytab
Date Tue, 28 Sep 2010 20:36:33 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1364?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Devaraj Das resolved HDFS-1364.
-------------------------------

    Fix Version/s: 0.22.0
       Resolution: Fixed

I just committed this. Thanks, Jitendra!

> HFTP client should support relogin from keytab
> ----------------------------------------------
>
>                 Key: HDFS-1364
>                 URL: https://issues.apache.org/jira/browse/HDFS-1364
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: security
>            Reporter: Kan Zhang
>            Assignee: Jitendra Nath Pandey
>             Fix For: 0.22.0
>
>         Attachments: HDFS-1364-y20.1.patch, HDFS-1364-y20.2.patch, HDFS-1364.1.patch,
HDFS-1364.2.patch
>
>
> If a user starts a long-running HFTP client using a keytab, we should do relogin automatically
whenever TGT expires. Currently, HFTP client uses TGT to fetch a delegation token and cache
that delegation token for HFTP operations. The delegation token is automatically renewed/refetched
using TGT. However, when TGT expires, delegation token renewal/refetch will fail and no further
HFTP operation is possible. This is unsatisfactory since the user has given us her keytab.
We should be able to relogin from keytab and continue.

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