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https://issues.apache.org/jira/browse/HADOOP-13309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15344619#comment-15344619
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Chris Nauroth commented on HADOOP-13309:
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bq. In HADOOP-12774 I proposed making the owner UGI.getShortName(), that way in 
code running as a different user, you'd pick up the relevant user.

This is the same implementation choice that Azure Data Lake used recently in 
HADOOP-12666.  Maybe it makes sense for the file system spec to state that file 
systems without support for ownership must fall back to UGI?  Then, the 
limitation would at least be the same limitation across alternative file 
systems.

> Document S3A known limitations in file ownership and permission model.
> ----------------------------------------------------------------------
>
>                 Key: HADOOP-13309
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13309
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Chris Nauroth
>            Priority: Minor
>
> S3A does not match the implementation of HDFS in its handling of file 
> ownership and permissions.  Fundamental S3 limitations prevent it.  This is a 
> frequent source of confusion for end users.  This issue proposes to document 
> these known limitations.



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