In PUT Object Copy, 'x-amz-metadata-directive: REPLACE' does not work.

Please specify the meta data you want to replace at the copy request.

S3 api reference[1] shows the description about x-amz-metadata-directive as follows:
If replaced, all original metadata is replaced by the metadata you specify.

1: http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectCOPY.html

I tried again with specify metadata in PUT Object Copy.
As a result source metadata is remaining.

$ ./s3curl.pl --id test -- http://localhost:8080/test-directive/ -X PUT
$ ./s3curl.pl --id test -- http://localhost:8080/test-directive/src -X PUT -T testFile -s -H 'x-amz-meta-src: src'
$ ./s3curl.pl --id test -- http://localhost:8080/test-directive/src -X HEAD -I
HTTP/1.1 200 OK
Content-Length: 11
x-amz-id-2: txb51acb733b634611b298b-0055128ab0
Last-Modified: Wed, 25 Mar 2015 10:14:23 GMT
ETag: "7c12772809c1c0c3deda6103b10fdfa0"
x-amz-meta-src: src
x-amz-request-id: txb51acb733b634611b298b-0055128ab0
Content-Type: application/octet-stream
X-Trans-Id: txb51acb733b634611b298b-0055128ab0
Date: Wed, 25 Mar 2015 10:15:12 GMT

$ ./s3curl.pl --id test -- http://localhost:8080/test-directive/dst -X PUT -H 'x-amz-copy-source:/test-directive/src' -H 'x-amz-meta-dst: dst' -H 'x-amz-metadata-directive: REPLACE'
<?xml version='1.0' encoding='UTF-8'?>
<CopyObjectResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
  <LastModified>2015-03-25T10:16:25.000Z</LastModified>
  <ETag>"7c12772809c1c0c3deda6103b10fdfa0"</ETag>
</CopyObjectResult>

$ ./s3curl.pl --id test -- http://localhost:8080/test-directive/dst -X HEAD -I
HTTP/1.1 200 OK
Content-Length: 11
x-amz-id-2: txf2147110b4d94edcaa3d1-0055128b0c
x-amz-meta-dst: dst
Last-Modified: Wed, 25 Mar 2015 10:16:25 GMT
ETag: "7c12772809c1c0c3deda6103b10fdfa0"
x-amz-meta-src: src
x-amz-request-id: txf2147110b4d94edcaa3d1-0055128b0c
Content-Type: application/octet-stream
X-Trans-Id: txf2147110b4d94edcaa3d1-0055128b0c
Date: Wed, 25 Mar 2015 10:16:45 GMT

x-amz-metadata-directive: REPLACE used for overwriting the metadata specified.

i.e. you must set x--amz-meta-src: dst on the second request, otherwise you cannot "REPLACE" the value.

> If replaced, all original metadata is replaced by the metadata you specify.

all original metada should be replaced.

"by the metadata you specify."?

You have to specify to replace the metadata.

Please confirm the results of the run in S3.

We need confirmation.

Right now, x-amz-metadata-directive: has no effect on a copy operation.

In all cases (REPLACE, COPY or missing), custom metadata specified is applied to the copied object, while non-conflicting metadata remains.

However, the behaviour should be that under REPLACE: Only the custom metadata should be applied, when COPYING (or when directive is missing), the existing custom metadata is copied, while any specified metadata is ignored.

Change abandoned by Tim Burke (<email address hidden>) on branch: master
Review: https://review.openstack.org/223857
Reason: Proposed against s3api as https://review.openstack.org/#/c/575824/

This issue was fixed in the openstack/swift 2.20.0 release.