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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6559) The RPC client should try to re-login when it detects that the TGT expired
Date Fri, 12 Feb 2010 08:15:38 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Devaraj Das updated HADOOP-6559:

    Attachment: h-6559.1.patch

The attached patch:
1) The RPC client will try to do re-login when it encounters SaslException. The max #tries
is 3 with a 5 seconds sleep between the trials.
2) Adds a method in the UGI class to do with relogin, and that uses the same keytab/principal
that login was originally called with.
3) The relogin meth keeps track of when it was last run (so as to avoid a flood of such calls,
made from different contexts).

> The RPC client should try to re-login when it detects that the TGT expired
> --------------------------------------------------------------------------
>                 Key: HADOOP-6559
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6559
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 0.22.0
>            Reporter: Devaraj Das
>            Assignee: Devaraj Das
>             Fix For: 0.22.0
>         Attachments: h-6559.1.patch
> Currently while making RPC calls, the client will throw an exception if the client is
not able to use the TGT (expired or timedout). This could be improved - it could catch the
exception and try doing a re-login.

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