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https://issues.apache.org/jira/browse/HDDS-2935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17742877#comment-17742877
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Steve Loughran commented on HDDS-2935:
--------------------------------------

no, it won't interop with s3 version id or etags...renaming a file in s3 via a 
multipart copy changes those values too -you can't use them in s3. 

> Support for getFileChecksum in OzoneFS
> --------------------------------------
>
>                 Key: HDDS-2935
>                 URL: https://issues.apache.org/jira/browse/HDDS-2935
>             Project: Apache Ozone
>          Issue Type: New Feature
>            Reporter: Srinivasu Majeti
>            Priority: Major
>
> Support for getFileChecksum() and any other way to help distcp to avoid the 
> copy of duplicate files even when the length is the same that of remote 
> storage (cloud copy to s3). Checksum calculations of local ozone files should 
> be better similar to whatever s3 is already doing/returning.



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