dentiny commented on PR #7884:
URL: https://github.com/apache/opendal/pull/7884#issuecomment-4929281824

   Thanks! I create a feature request 
[here](https://github.com/apache/opendal/issues/7894) to track.
   
   >  we can go ahead with this PR at least.
   
   Sure, but I do have a few practical questions:
   - Do we have any concrete conclusion that the netapp S3 is expecting a 
header of "Content-Length: 0", or it's expecting users to provide actual object 
size? Since it's undocumented and untested, I have no clue whether this PR will 
address the original issue
   - It's completely unknown whether there's a vendor who take advantage of the 
Content-Length header for indicate the number of bytes to copy (I won't be 
surprised if any vendors implements so); that way we're introducing new 
failures -- that's the conflict behavior I mentioned on the issue
   - If go with the custom header solution -- at least you seem to agree on it 
:wink: -- how do we plan to deal with the content-length header in this PR? If 
we plan to delete it, it's a behavior change... At minimum we should leave a 
TODO IMO


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