Chris Nauroth created HADOOP-13310:
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             Summary: S3A reporting of file group as null 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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