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https://issues.apache.org/jira/browse/HADOOP-14211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erik Krogen updated HADOOP-14211:
---------------------------------
    Attachment: HADOOP-14211.000.patch

Attaching a patch which simply passes {{false}} for {{authorityNeeded}}. It 
includes a unit test which demonstrates this issue by nesting ViewFS though I'm 
not attached to that if it doesn't seem necessary...

Pinging [~sanjay.radia] based on original authorship; [~manojg] / 
[~andrew.wang] based on recent involvement in other ViewFS-related work.

> ChRootedFs is too aggressive about enforcing "needsAuthority"
> -------------------------------------------------------------
>
>                 Key: HADOOP-14211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14211
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: viewfs
>    Affects Versions: 2.6.0
>            Reporter: Erik Krogen
>            Assignee: Erik Krogen
>         Attachments: HADOOP-14211.000.patch
>
>
> Right now {{ChRootedFs}} passes the following up to the 
> {{AbstractFileSystem}} superconstructor:
> {code}
>     super(fs.getUri(), fs.getUri().getScheme(),
>         fs.getUri().getAuthority() != null, fs.getUriDefaultPort());
> {code}
> This passes a value of {{authorityNeeded==true}} for any {{fs}} which has an 
> authority, but this isn't necessarily the case - ViewFS itself is an example 
> of this. In fact you will encounter this issue if you try to nest one ViewFS 
> within another - I can't think of any reason why you would want to do that 
> but there's no reason why you shouldn't be able to and in general ViewFS is 
> making an assumption that it then proves invalid by its own behavior. The 
> {{authorityNeeded}} check isn't necessary in this case anyway; {{fs}} is 
> already an instantiated {{AbstractFileSystem}} which means it has already 
> used the same constructor with the value of {{authorityNeeded}} (and 
> corresponding validation) that it actually requires.



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