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I am using the list_objects method of the python minio client and trying to retrieve the metadata for each object while traversing folders in S3. I attempted to do this by setting the include_user_meta parameter of the method to True. However, when I look at the returned objects, the metadata of the returned objects is not included. I checked the S3 API Reference documentation for the ListObjectsV2 endpoint and there is no mention of a metadata parameter that could be passed to include the metadata during file traversal.

Is there some other way to retrieve the metadata for each object while traversing a folder in S3 (without firing off one request for each retrieved object), or is this simply not possible and there is a bug in the python minio client?

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    I'm using Java client, but got the same problem. Commented Dec 2, 2023 at 2:12

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Python API documentation says that include_user_meta is "MinIO specific flag to control to include user metadata". Probably other S3 implementations do not support it.

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Apparently not returning object metadata while listing objects accompanied with corresponding versions is done on purpose.

Please read this ticket.

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