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From "Omkar Vinit Joshi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-8830) org.apache.hadoop.security.authentication.server.AuthenticationFilter might be called twice, causing kerberos replay errors
Date Sat, 28 Sep 2013 02:32:02 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-8830?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Omkar Vinit Joshi updated HADOOP-8830:
--------------------------------------

    Attachment: HADOOP-8830.20131027.1.patch
    
> org.apache.hadoop.security.authentication.server.AuthenticationFilter might be called
twice, causing kerberos replay errors
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8830
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8830
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.0.1-alpha, 2.1.0-beta, 2.1.1-beta, 2.1.2-beta
>            Reporter: Moritz Moeller
>            Assignee: Omkar Vinit Joshi
>            Priority: Critical
>         Attachments: HADOOP-8830.20131026.1.patch, HADOOP-8830.20131027.1.patch
>
>
> AuthenticationFilter.doFilter is called twice (not sure if that is intentional or not).
> The second time it is called the ServletRequest is already authenticated, i.e. httpRequest.getRemoteUser()
returns non-null info.
> If the kerberos authentication is triggered a second time it'll return a replay attack
exception.
> I solved this by adding a if (httpRequest.getRemoteUser() == null) at the very beginning
of doFilter.
> Alternatively one can set an attribute on the request, or figure out why doFilter is
called twice.

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