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https://issues.apache.org/jira/browse/FLINK-18045?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Rohrmann reassigned FLINK-18045:
-------------------------------------

    Assignee: Bart Krasinski

> Newest version reintroduced a bug causing not working on secured MapR
> ---------------------------------------------------------------------
>
>                 Key: FLINK-18045
>                 URL: https://issues.apache.org/jira/browse/FLINK-18045
>             Project: Flink
>          Issue Type: Bug
>          Components: Deployment / YARN
>    Affects Versions: 1.10.1, 1.11.0
>            Reporter: Bart Krasinski
>            Assignee: Bart Krasinski
>            Priority: Critical
>             Fix For: 1.11.0, 1.10.2
>
>
> I was not able to run Flink 1.10.1 on YARN on a a secured MapR cluster, but 
> the previous version (1.10.0) works fine.
> After some investigation it looks like during some refactoring, checking if 
> the enabled security method is kerberos was removed, effectively 
> reintroducing https://issues.apache.org/jira/browse/FLINK-5949
>  
> Refactoring commit: 
> [https://github.com/apache/flink/commit/8751e69037d8a9b1756b75eed62a368c3ef29137]
>  
> My proposal would be to bring back the kerberos check:
> {code:java}
> loginUser.getAuthenticationMethod() == 
> UserGroupInformation.AuthenticationMethod.KERBEROS
> {code}
> and add an unit test for that case to prevent it from happening again
> I'm happy to prepare a PR after reaching consensus



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