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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10191) Missing executable permission on viewfs internal dirs
Date Thu, 20 Mar 2014 05:27:57 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13941407#comment-13941407
] 

Chris Nauroth commented on HADOOP-10191:
----------------------------------------

Hi, [~jira.shegalov].  Thanks for the patch.  This change makes sense to me.  Tomorrow morning,
I'll put it through some additional testing and give it the final review.

> Missing executable permission on viewfs internal dirs
> -----------------------------------------------------
>
>                 Key: HADOOP-10191
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10191
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: viewfs
>            Reporter: Gera Shegalov
>            Priority: Blocker
>         Attachments: HADOOP-10191.v01.patch
>
>
> ViewFileSystem allows 1) unconditional listing of internal directories (mount points)
and 2) and changing work directories.
> 1) requires read permission
> 2) requires executable permission
> However, the hardcoded PERMISSION_RRR == 444 for FileStatus representing an internal
dir does not have executable bit set.
> This confuses YARN localizer for public resources on viewfs because it requires executable
permission for "other" on all of the ancestor directories of the resource. 
> {code}
> java.io.IOException: Resource viewfs:/pubcache/cache.txt is not publicly accessable and
as such cannot be part of the public cache.
>         at org.apache.hadoop.yarn.util.FSDownload.copy(FSDownload.java:182)
>         at org.apache.hadoop.yarn.util.FSDownload.access$000(FSDownload.java:51)
>         at org.apache.hadoop.yarn.util.FSDownload$1.run(FSDownload.java:279)
>         at org.apache.hadoop.yarn.util.FSDownload$1.run(FSDownload.java:277)
> {code}



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