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Date: Wed, 23 Sep 2015 14:49:04 +0000 (UTC)
From: "Wei-Chiu Chuang (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12895513.1442940983000.50187.1443019744532@Atlassian.JIRA>
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 <JIRA.12895513.1442940983654@arcas>
Subject: [jira] [Updated] (HDFS-9123) Copying from the root to a
 subdirectory should be forbidden
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     [ https://issues.apache.org/jira/browse/HDFS-9123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wei-Chiu Chuang updated HDFS-9123:
----------------------------------
    Summary: Copying from the root to a subdirectory should be forbidden  (was: Validation of a path ended with a '/')

> Copying from the root to a subdirectory should be forbidden
> -----------------------------------------------------------
>
>                 Key: HDFS-9123
>                 URL: https://issues.apache.org/jira/browse/HDFS-9123
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: fs
>            Reporter: Wei-Chiu Chuang
>            Assignee: Wei-Chiu Chuang
>            Priority: Minor
>         Attachments: HDFS-9123.001.patch, HDFS-9123.002.patch
>
>
> HDFS forbids copying from a directory to its subdirectory (e.g. hdfs dfs -cp /abc /abc/xyz) as otherwise it could cause infinite copying (/abc/xyz/xyz, /abc/xyz/xyz, /abc/xyz/xyz/xyz,... etc)
> However, if the source path is ended with a '/' path separator, the existing validation for sub-directories fails. For example, copying from / to /abc would cause infinite copying, until the disk space is filled up.


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