[rjzzleep]

Altinity maintains the ClickHouse operator which got a lot of people to use ClickHouse to begin with. ClickHouse has had a lot of corner cases that were reported from those kinds of people, myself included.

If you look at some of the discussions, while a lot of the fixes come from the clickHouse team it would be unjust to say that the corner case discussions don't contribute to the fixes.

I think part of the reason is that ClickHouse, being sort of a unique offering brings with its users sometimes a quite competent bunch that go beyond the "I want this feature, please implement".

[hodgesrm]

To that point Altinity has contributed about 900 PRs to ClickHouse, and many more if you include ecosystem projects like the operator, clickhouse-backup (which we maintain), the community grafana plugin (over 11M downloads last I looked), ODBC driver, etc. All of this is open source.

We've also been very active on diagnosing problems, logging issues, and contributing ideas for solutions. Alexey Milovidov has logged the most issues of anyone (2376) but the next two people (1012, 810) are from Altinity. The #6 and #9 contributors of issues are also from Altinity.

[rjzzleep]

I totally forgot about clickhouse-backup. It was frequently referenced in ClickHouse issues, and helped me and probably a lot of others understand how ClickHouse stores and transfers data.