[bug] Transfer verification error for multipart upload

[sarahwooders]

Describe the bug I am transferring a large 135 GB file from AWS to GCP, however instead a 62.5 GB file appears in GS and the transfer validation failes.

To Reproduce Run skyplane cp s3://glisten-datasets/allparel-images/ILSVRC2012_img_train.tar gs://glisten-dataset/allparel-images/ -n 8

Expected behavior Successfully transfer of full file.

Screenshots

Client Log client.log

Environment info (please complete the following information):

• OS: Mac OS

• Python version: 3.9

[sarahwooders]

Fixed by #757