Steve Loughran created HADOOP-16370:
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             Summary: S3AFileSystem copyFile to propagate etag/version from 
getObjectMetadata to copy request
                 Key: HADOOP-16370
                 URL: https://issues.apache.org/jira/browse/HADOOP-16370
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3
    Affects Versions: 3.3.0
            Reporter: Steve Loughran


Something to consider if we want: should the etag and version from the initial 
getObjectMetadata call be propagated to the actual CopyRequest *if they are not 
already known*

That way, if we rename() a file and its etag/version is not known, we can fix 
them for the next stage of the operation. Relevant given we are copying 
metadata over, and for resilience to changes while the copy is taking place



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