[jira] [Updated] (HADOOP-8830) org.apache.hadoop.security.authentication.server.AuthenticationFilter might be called twice, causing kerberos replay errors

["Omkar Vinit Joshi (JIRA)" <ji...@apache.org>]

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

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

    Priority: Critical  (was: Major)
    
> 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
>            Reporter: Moritz Moeller
>            Assignee: Omkar Vinit Joshi
>            Priority: Critical
>
> 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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