Íñigo Goiri commented on HDFS-13233:

Thanks [~striver.wang] for [^HDFS-13233.002.patch].
It looks good, I would add a javadoc to {{isParentEntry()}} giving a high level 
idea of the behavior and probably a couple examples there.

There are a couple failed unit tests that seem related:
* TestRouterQuota
* TestMountTableResolver

Do you mind taking a look?

> RBF:getMountPoint doesn't return the correct mount point of the mount table
> ---------------------------------------------------------------------------
>                 Key: HDFS-13233
>                 URL: https://issues.apache.org/jira/browse/HDFS-13233
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs
>    Affects Versions: 3.2.0
>            Reporter: wangzhiyuan
>            Priority: Major
>         Attachments: HDFS-13233.001.patch, HDFS-13233.002.patch
> Method MountTableResolver->getMountPoint will traverse mount table and return 
> the first mount point which the input path starts with, but the condition is 
> not sufficient.
> Suppose the mount point table contains: "/user" "/user/test" "/user/test1", 
> if the input path is "/user/test111", the return mount point is 
> "/user/test1", but the correct one should be "/user".

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