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https://issues.apache.org/jira/browse/HDFS-17138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17750537#comment-17750537
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Xiaoqiao He commented on HDFS-17138:
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Thanks. IMO, it may be one common issue, not affect to DFSRouter only.
I am concerned if it can fix completely when kerberos rules don't match, Will 
other related logic will pass?
If just fix the exception mentioned above, it is OK for me, IIRC only print log 
to invoke `formatTokenId`, it is better to double check. Thanks again.

> RBF: We changed the hadoop.security.auth_to_local configuration of one 
> router, the other routers stopped working
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-17138
>                 URL: https://issues.apache.org/jira/browse/HDFS-17138
>             Project: Hadoop HDFS
>          Issue Type: Bug
>         Environment: hadoop 3.3.0
>            Reporter: Xiping Zhang
>            Assignee: Xiping Zhang
>            Priority: Major
>         Attachments: image-2023-08-02-16-20-34-454.png, 
> image-2023-08-03-10-32-03-457.png
>
>
> other routers  error log:
> !image-2023-08-02-16-20-34-454.png!



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