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https://issues.apache.org/jira/browse/HDFS-14739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16908854#comment-16908854
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hemanthboyina commented on HDFS-14739:
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_then it will be overwrite_
It will overwrite if you explicitly specify the group while mount point
creation , so thats not our scenario .
For listing mount points the command is dfsrouteradmin -ls
what you have been checking is for listing files in /mnt
> RBF: LS command for mount point shows wrong owner and permission information.
> -----------------------------------------------------------------------------
>
> Key: HDFS-14739
> URL: https://issues.apache.org/jira/browse/HDFS-14739
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: xuzq
> Priority: Major
> Attachments: image-2019-08-16-16-27-08-003.png,
> image-2019-08-16-16-28-15-022.png
>
>
> ||source||target namespace||destination||owner||group||permission||
> |/mnt|ns0|/mnt|mnt|mnt_group|755|
> |/mnt/test1|ns1|/mnt/test1|mnt_test1|mnt_test1_group|755|
> |/test1|ns1|/test1|test1|test1_group|755|
> When do getListing("/mnt"), the owner of */mnt/test1* should be *mnt_test1*
> instead of *test1* in result.
>
> And if the mount table as blew, we should support getListing("/mnt") instead
> of throw IOException when dfs.federation.router.default.nameservice.enable is
> false.
> ||source||target namespace||destination||owner||group||permission||
> |/mnt/test1|ns0|/mnt/test1|test1|test1|755|
> |/mnt/test2|ns1|/mnt/test2|test2|test2|755|
>
>
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