Allow uploading using a single PutObject request (i.e. disable multipart upload)

[BobDu]

Tell us more about this new feature.

multipart upload mode object etag not equeals file md5,
hope support a option, can choose single PUT operation mode.
like --no-multipart

[dannycjones]

Hey, thank you for the feature request. We'll look into this.

Do you currently have a workflow in mind that you can share? Do you compute the MD5 in some separate system and expect it to match?

[BobDu]

Yes, you are right
We implemented a service to detect whether files in s3 have changed, by calculating file MD5
@dannycjones