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https://issues.apache.org/jira/browse/HDFS-16724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17576771#comment-17576771
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ASF GitHub Bot commented on HDFS-16724:
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ZanderXu opened a new pull request, #4719:
URL: https://github.com/apache/hadoop/pull/4719
### Description of PR
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. If we try to get
the file information 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.
> 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
>
> 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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