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https://issues.apache.org/jira/browse/RANGER-684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14947882#comment-14947882
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Don Bosco Durai commented on RANGER-684:
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While we are doing it, let's keep in mind what HDFS also does. They have regex 
syntax in core-site.xml to transform kerberos principals into linux friendly 
names. If we can do something like that, then it will be good. So we can 
address replacing "space" and as well has some other transformation logic.

Another suggestion is what we are doing in tag based policies in Ranger, 
someone can extend the policy using JavaScript. If we can support something 
like that, then we can provide the default transformations out of the box, like 
"space to underscore", etc. But if the user wants to write more sophisticated 
transformation, then they can write the script using javascript.


> Ranger Usersync - Add Ability to transform user/group names
> -----------------------------------------------------------
>
>                 Key: RANGER-684
>                 URL: https://issues.apache.org/jira/browse/RANGER-684
>             Project: Ranger
>          Issue Type: Improvement
>    Affects Versions: 0.4.0, 0.5.0
>            Reporter: Velmurugan Periasamy
>            Assignee: Sailaja Polavarapu
>            Priority: Critical
>             Fix For: 0.5.1, 0.6.0
>
>
> Ensure the UserSync is capable of transforming user/group names from LDAP/AD 
> source. Probably by allowing custom mapping ( like space to underscore) 



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