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https://issues.apache.org/jira/browse/HDFS-16724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17583837#comment-17583837
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ASF GitHub Bot commented on HDFS-16724:
---------------------------------------

goiri merged PR #4719:
URL: https://github.com/apache/hadoop/pull/4719




> RBF should support get the information about ancestor mount points
> ------------------------------------------------------------------
>
>                 Key: HDFS-16724
>                 URL: https://issues.apache.org/jira/browse/HDFS-16724
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: ZanderXu
>            Assignee: ZanderXu
>            Priority: Major
>              Labels: pull-request-available
>
> Suppose RBF cluster have 2 nameservices and to mount point as below:
>  * /user/ns1 -> ns1 -> /user/ns1
>  * /usre/ns2 -> ns2 -> /user/ns2
> Suppose we disable default nameservice of the RBF cluster and try to 
> getFileInfo of the path /user, RBF will throw one IOException to client due 
> to can not find locations for path /user. 
> But as this case, RBF should should return one valid response to client, 
> because /user has two sub mount point ns1 and ns2.



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