On top of that, Yandex requires a very aggressive CLA to be signed by contributors: https://yandex.ru/legal/cla/?lang=en
This worries me and makes me wonder if they are going for the open-source-only-by-name model.
[Please reply instead of giving silent dowvotes.]
We don't require Yandex CLA:
> As an alternative, you can provide DCO instead of CLA. You can find the text of DCO here: https://developercertificate.org/ It is enough to read and copy it verbatim to your pull request.
> If you don't agree with the CLA and don't want to provide DCO, you still can open a pull request to provide your contributions.
https://github.com/ClickHouse/ClickHouse/blob/master/CONTRIB...
Anyway, Yandex CLA will be removed in the upcoming days (it should be already removed).
How so? An end user should prefer a database under a license that protect the developer and users from cloudification/proprietization/SaaS