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https://issues.apache.org/jira/browse/KNOX-3048?focusedWorklogId=972653&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-972653
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ASF GitHub Bot logged work on KNOX-3048:
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                Author: ASF GitHub Bot
            Created on: 11/Jun/25 19:36
            Start Date: 11/Jun/25 19:36
    Worklog Time Spent: 10m 
      Work Description: moresandeep commented on PR #1043:
URL: https://github.com/apache/knox/pull/1043#issuecomment-2963943512

   @pzampino i addressed your comments, following are the changes in a nutshell:
   1. Regex expressions are now constants
   2.  For cases where proxy user impersonation fails proxy group proxy 
impersonation will be evaluated
   3. Added unit tests for the item no. 2
   
   I tested it locally and verified that it works. Let me know if there are 
more changes.




Issue Time Tracking
-------------------

    Worklog Id:     (was: 972653)
    Time Spent: 4h 50m  (was: 4h 40m)

> Surrogate proxy user configuration for user groups
> --------------------------------------------------
>
>                 Key: KNOX-3048
>                 URL: https://issues.apache.org/jira/browse/KNOX-3048
>             Project: Apache Knox
>          Issue Type: Improvement
>          Components: Server
>    Affects Versions: 2.0.0
>            Reporter: Philip Zampino
>            Assignee: Sandeep More
>            Priority: Major
>             Fix For: 2.1.0
>
>          Time Spent: 4h 50m
>  Remaining Estimate: 0h
>
> *Problem Statement:*
> Currently Knox has the ability for specific users (say for e.g. {{sp_user}}) 
> to impersonate other users (say for e.g.{{ot_user}}). This is driven by 
> configs defined in a topology. Currently these configs are needed for each 
> user that impersonates other users (i.e. {{sp_user}}), this can get out of 
> hand quickly and can be difficult to maintain.
> To solve this problem the proposed solution uses a group level impersonation 
> configuration. This configuration will be based on the virtual groups feature 
> that is already available in Knox. With this new configuration we can have 
> specific users who belong to a virtual group/s (based on conditions such as 
> {{(match groups 'analyst|scientist') }}) impersonate other users. This will 
> significantly cut down on the config properties and keep them readable and 
> maintainable.



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