fhilgers commented on issue #6285:
URL: https://github.com/apache/arrow-rs/issues/6285#issuecomment-2349218970

   How do you plan on implementing `ObjectStore::copy_if_not_exists`. The new 
conditional features from aws only allow checking etag on the source for copy 
operations. `x-amz-copy-source-if-match` and `x-amz-copy-source-if-match` only 
check the source, not the destination as far as i understand 
(https://docs.aws.amazon.com/AmazonS3/latest/API/API_CopyObject.html). Is there 
a workaround through the conditonal Put operadions? 
   
   Minio already supported these headers prior to AWS, but has anyone tried to 
use Minio for the conditional operations without dynamodb?


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