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From "wangzhiyuan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-13233) RBF: getMountPoint doesn't return the correct mount point of the mount table
Date Thu, 08 Mar 2018 06:50:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16390833#comment-16390833
] 

wangzhiyuan commented on HDFS-13233:
------------------------------------

Hi [~elgoiri], there is a little difference between patch 2 and patch 3.

Patch 2:  return path.charAt(parent.length()) == '/' ;

Patch 3:  return path.charAt(parent.length()) == '/' || parent.equals("/");

All the tests of TestMountTableResolver passed  But there is still one test case in TestRouterQuota
failed

I will check it 

 

 

> 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
>            Assignee: wangzhiyuan
>            Priority: Major
>         Attachments: HDFS-13233.001.patch, HDFS-13233.002.patch, HDFS-13233.003.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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