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https://issues.apache.org/jira/browse/HADOOP-6427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12788867#action_12788867
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Eli Collins commented on HADOOP-6427:
-------------------------------------

The motivation for this is that symlink targets need to be fully qualified, eg 
file:///f is a valid link target because it's fully qualified but hdfs:///f is 
not. I ran into this when writing a test that links from Hdfs to LocalFs. 

> Add Path isQualified
> --------------------
>
>                 Key: HADOOP-6427
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6427
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>         Attachments: hadoop-6427-1.patch
>
>
> The Path class has a method to make a path qualified but not to query if the 
> path is qualified. This is needed for HADOOP-64221. In addition this patch 
> adds tests to TestPath that cover the file scheme. Note that "fully 
> qualified" applies to domain names not URIs so this function and it tests 
> also serve to define what we mean by a fully qualified path.

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