Steve Loughran resolved HADOOP-13310.
    Resolution: Duplicate

> S3A reporting of file group as empty is harmful to compatibility for the 
> shell.
> -------------------------------------------------------------------------------
>                 Key: HADOOP-13310
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13310
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Chris Nauroth
>            Priority: Minor
> S3A does not persist group information in file metadata.  Instead, it stubs 
> the value of the group to an empty string.  Although the JavaDocs for 
> {{FileStatus#getGroup}} indicate that empty string is a possible return 
> value, this is likely to cause compatibility problems.  Most notably, shell 
> scripts that expect to be able to perform positional parsing on the output of 
> things like {{hadoop fs -ls}} will stop working if retargeted from HDFS to 
> S3A.

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