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https://issues.apache.org/jira/browse/HDFS-14447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16827501#comment-16827501
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Shen Yinjie commented on HDFS-14447:
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Appreciate your patience! [~elgoiri] I will update pathch as you metioned soon.

> RBF: RouterAdminServer should support RefreshUserMappingsProtocol
> -----------------------------------------------------------------
>
>                 Key: HDFS-14447
>                 URL: https://issues.apache.org/jira/browse/HDFS-14447
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: rbf
>    Affects Versions: 3.1.0
>            Reporter: Shen Yinjie
>            Assignee: Shen Yinjie
>            Priority: Major
>             Fix For: HDFS-13891
>
>         Attachments: HDFS-14447-HDFS-13891.01.patch, 
> HDFS-14447-HDFS-13891.02.patch, HDFS-14447-HDFS-13891.03.patch, error.png
>
>
> HDFS with RBF
> We configure hadoop.proxyuser.xx.yy ,then execute hdfs dfsadmin 
> -Dfs.defaultFS=hdfs://router-fed -refreshSuperUserGroupsConfiguration,
>  it throws "Unknown protocol: ...RefreshUserMappingProtocol".
> RouterAdminServer should support RefreshUserMappingsProtocol , or a proxyuser 
> client would be refused to impersonate.As shown in the screenshot



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