The 10/27/25 release of the feature/s3/manager module adds two additional durability checks:
Upload() calls will verify that we send the expected number of parts, assuming that the input object's Reader is seekable such that we can determine its length.Download() calls will verify that individual range requests from S3 return the expected byte range.
Errors will look like the following:
uploaded part count mismatch: expected x, got y
invalid content range: expect x-y, got a-b
You can disable either or both of these new behaviors with a new DisableValidateParts flag in options for Uploader and Downloader. Amazon S3 does not advise doing this as it damages the durability posture of your application.
// same for NewDownloader
u := manager.NewUploader(svc, func (o *manager.Uploader) {
o.DisableValidateParts = true
})#3202
The 10/27/25 release of the
feature/s3/managermodule adds two additional durability checks:Upload()calls will verify that we send the expected number of parts, assuming that the input object'sReaderis seekable such that we can determine its length.Download()calls will verify that individual range requests from S3 return the expected byte range.Errors will look like the following:
You can disable either or both of these new behaviors with a new
DisableValidatePartsflag in options forUploaderandDownloader. Amazon S3 does not advise doing this as it damages the durability posture of your application.#3202