There's thankfully a link to a medium post, describing a bit of what it is, how they got here. <a href="https://medium.com/yandex/ytsaurus-exabyte-scale-storage-and-processing-system-is-now-open-source-42e7f5fa5fc6" rel="nofollow">https://medium.com/yandex/ytsaurus-exabyte-scale-storage-and...</a>