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From "Kan Zhang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1364) HFTP client should support relogin from keytab
Date Tue, 31 Aug 2010 22:23:55 GMT
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: Kan Zhang

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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