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https://issues.apache.org/jira/browse/HADOOP-10307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13886775#comment-13886775
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Benoy Antony commented on HADOOP-10307:
---------------------------------------

@rkanter,   Using )AltKerberosAuthenticationHandler_ seems like a way to 
introduce multiple mechanisms as if its a single mechanism. This will result in 
one implementation which knows about all mechanisms. Not sure if that's the 
standard/right pattern to plugin multiple implementations of an interface to a 
framework. 

The approach that we have used to specify the different _AuthenticationHandler_ 
implementations directly in the configuration. The default implementation can 
be specified by keeping it at the beginning of the list. 


> Support multiple Authentication mechanisms for HTTP
> ---------------------------------------------------
>
>                 Key: HADOOP-10307
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10307
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 2.2.0
>            Reporter: Benoy Antony
>            Assignee: Benoy Antony
>         Attachments: HADOOP-10307.patch
>
>
> Currently it is possible to specify a custom Authentication Handler  for HTTP 
> authentication.  
> We have a requirement to support multiple mechanisms  to authenticate HTTP 
> access.



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