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Description
S3 (or boto3?) has a limit of 10,000 parts. I used a part size of 10 MiB, which limits the file size to about 100GiB. We do have datasets that will be bigger than that.
This changes the part size to 256MiB, so a max limit of about 2.56TiB.
(Inside that function, we do not know the end file size, since it is meant to work with BinaryIO streams)
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