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https://issues.apache.org/jira/browse/HBASE-7910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13584791#comment-13584791
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Gary Helmling commented on HBASE-7910:
--------------------------------------

Agree with getting rid of the reflection, so long as we keep the {{User}} class 
as a wrapper around {{UserGroupInformation}} to protect ourselves from future 
changes.  This usage is deeply engrained enough in the HBase code that I think 
having our own abstraction makes sense.
                
> Dont use reflection for security
> --------------------------------
>
>                 Key: HBASE-7910
>                 URL: https://issues.apache.org/jira/browse/HBASE-7910
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 0.96.0
>
>
> security.User class uses reflection so that HBase can work with older 
> Hadoop's not having security. Now that we require 1.x, or 0.23 or 2.x, all 
> Hadoop versions have security code. We can get rid of most of the User class. 

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