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ambari-server/src/main/java/org/apache/ambari/server/view/ViewContextImpl.java 
(line 233)
<https://reviews.apache.org/r/41739/#comment174616>

    This seems to be problematic.  I think in the simple case, the default 
realm will work... since there will only be a single realm involved.  However 
in more complex cases, there may be multiple realms involved... say where 
Ambari uses an MIT KDC for managed (service) identities and an Active Directory 
for unmanaged (user) identities.  In this case, I suspect that the default 
realm will be the realm managed by the MIT KDC.  
    
    Given the use-case that generated the issue that lead to this patch, I 
assume that the relevant realm would be the realm managed by the Active 
Directory, not the MIT KDC. 
    
    Maybe you need more details on the logged in user to make the determination 
of what their realm is.  Else, maybe you need to get the list of relevant 
realms and try each - hoping there isn't a collision.


- Robert Levas


On Dec. 29, 2015, 4:28 a.m., Gaurav Nagar wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/41739/
> -----------------------------------------------------------
> 
> (Updated Dec. 29, 2015, 4:28 a.m.)
> 
> 
> Review request for Ambari, DIPAYAN BHOWMICK, Srimanth Gunturi, Sid Wagle, and 
> Yusaku Sako.
> 
> 
> Bugs: AMBARI-14503
>     https://issues.apache.org/jira/browse/AMBARI-14503
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> Changed getUsername call to return name with auth_to_local conversion in 
> ViewContextImpl.
> Added getLoggedinUser to return loggedin ambari user.
> 
> 
> Diffs
> -----
> 
>   ambari-server/pom.xml b5a9d49 
>   
> ambari-server/src/main/java/org/apache/ambari/server/view/ViewContextImpl.java
>  a22c514 
>   ambari-views/src/main/java/org/apache/ambari/view/ViewContext.java c0cae80 
>   contrib/views/files/src/main/resources/view.xml 58a7682 
>   contrib/views/hive/src/main/resources/view.xml e04ed4b 
>   contrib/views/pig/src/main/resources/view.xml 30efae8 
>   contrib/views/tez/src/main/resources/view.xml d1ad5ad 
> 
> Diff: https://reviews.apache.org/r/41739/diff/
> 
> 
> Testing
> -------
> 
> Manual Testing.
> 
> 
> Thanks,
> 
> Gaurav Nagar
> 
>

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