Support for XML API multipart uploads?

[Mononofu]

As far as I understand, XML API multipart uploads are the recommended way to upload large blobs in parallel. Is this supported?

I could find the function for resumable multi-chunk uploads, but unfortunately GCS does not seem to support parallel upload for these.

[yoshidan]

Hi @Mononofu

XML API multipart uploads are not supported.

The solution would be to upload in parallel and then compose.
Parallel composite uploads