Steve Loughran commented on HADOOP-13892:

Given the need for xattrs, for full distcp we really need distcp itself to 
downgrade and persist the attr data as some explicitly created file alongside 
the data, e.g


Going to close this as a wontfix

> use s3 tags/headers to record permissions on objects, so preserving them 
> through distcp round trips
> ---------------------------------------------------------------------------------------------------
>                 Key: HADOOP-13892
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13892
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 2.9.0
>            Reporter: Steve Loughran
>            Priority: Major
> S3 now supports object tags, attributes which can be updated during the life 
> of an object.
> S3A could use that to preserve the permissions/ACLs of objects when copied 
> from elsewhere, in particular from HDFS. This would ensure that data backed 
> up from HDFS preserves all the permission information needed when doing a 
> recovery from S3 to HDFS.
> Azure WASB does exactly this already.

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