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https://issues.apache.org/jira/browse/HADOOP-13228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15309000#comment-15309000
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Xiao Chen commented on HADOOP-13228:
------------------------------------

In {{DelegationTokenAuthenticatedURL#openConnection}}, we put delegation token 
(DT) on the request header or query string (deprecated).
However, in {{getDelegationToken}} / {{renewDelegationToken}} / 
{{cancelDelegationToken}}, we don't have such logic. Without a delegation 
token, the server side's {{DelegationTokenAuthenticationHandler}} falls back to 
authenticate via the AuthenticationHandler.

> Add delegation token to the connection in DelegationTokenAuthenticator
> ----------------------------------------------------------------------
>
>                 Key: HADOOP-13228
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13228
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.6.0
>            Reporter: Xiao Chen
>            Assignee: Xiao Chen
>
> Following [a comment from another 
> jira|https://issues.apache.org/jira/browse/HADOOP-13155?focusedCommentId=15308715&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15308715],
>  create this to specifically handle the delegation token renewal/cancellation 
> bug in {{DelegationTokenAuthenticatedURL}} and 
> {{DelegationTokenAuthenticator}}.



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