CarrierWave reads local files into memoery when migrates to ObjectStorage

This is an outstanding bug since 2015. https://github.com/carrierwaveuploader/carrierwave/issues/1780

This kills Sidekiq-workers by RSS limit. Especially, when it uploads large files such as artifacts and LFS.

FYI, there is a PR: https://github.com/carrierwaveuploader/carrierwave/pull/2303


Also, this problem happens when we pull back an object from object storage to file storage, although, the route causes are different.

Edited by Shinya Maeda