Hacker News: AntonFriberg

New comment by AntonFriberg in "I've operated petabyte-scale ClickHouse clusters for 5 years"

AntonFriberg — Fri, 11 Sep 2026 18:50:10 +0000

I would like to see some sources on your claim about it being Russian. It is incorporated in the US with most developers in Amsterdam.

After the invasion of Ukraine they stayed silent for a while but that was because they needed to allow there developers to get out of Russia. Many of them are Ukrainians including the CTO and founder. As soon as it was safe for there team they took a very firm stance against Russia with Ukrainian flags on the website and written statement from the team.

I am not aware of any Russian influence currently.

New comment by AntonFriberg in "Ubuntu 26.04"

AntonFriberg — Fri, 24 Apr 2026 11:16:49 +0000

For Nix Home-Manager on non-nixos you need to fix the driver integration. https://nix-community.github.io/home-manager/index.xhtml#sec...

Nowadays it is quite easy https://github.com/AntonFriberg/dotfiles/blob/master/modules...

Note that the way this works is that after you activate your home manager generation it outputs a script path that you need to run manually as root which installs a Systemd service which ensures that the drivers are linked correctly.

New comment by AntonFriberg in "When etcd crashes, check your disks first"

AntonFriberg — Sat, 21 Feb 2026 15:03:56 +0000

Came across this at work as well during the early days of Kubernetes. At that time all VM storage was entirely backed by NFS or Network attached iSCSI, there was no local disk at all. We noticed intermittent issues that caused kube API to stop responding but nothing serious.

Then all the sudden there was a longer lasting outage where the ETCD did not really recover on its own. The kube API buffered requests but eventually crashed due to OOM.

The issue was due to the Kubernetes distro we picked (rancher) which runs a separate cluster in front of the deployed ones for the control plane. Large changes happening in the underlying clusters needed to be sent to the control plane. After we hit the latency threshold it started failing at regular intervals and the control plane started drifting more and more and needing more and more changes at start up. Until it could not recover.

Solving it took some time and confidence. Manually cleaning up large unused data in the underlying ETCD instances so that they did not cause upstream errors.

It was later during post-mortem investigation that I understood the RAFT algorithm and the storage latency issue. Convincing the company to install local disks took some time but I could correlate kube API issues to disk latency by setting up robust monitoring. Fun times!

The requirements are well documented nowadays! https://etcd.io/docs/v3.1/op-guide/performance/

Why You Should Not Trust JSON Decoding

AntonFriberg — Fri, 21 Mar 2025 14:09:24 +0000

Article URL: https://engineeringat.axis.com/json-decoding/

Comments URL: https://news.ycombinator.com/item?id=43435908

Points: 4

# Comments: 0

New comment by AntonFriberg in "All you need is Wide Events, not "Metrics, Logs and Traces""

AntonFriberg — Thu, 29 Feb 2024 13:47:31 +0000

I am the author of the first link.

We successfully replaced Elasticsearch with ClickHouse within a Year. We went from having difficulties managing 3 months of data to storing 5 year+ of data. We also had difficulties onboarding users into Kibana and Elasticsearch world, this was not such a big problem with ClickHouse since most developers feel comfortable with SQL.

This change together with Apache Superset for the BI layer made a huge impact in the amount of internal users that could extract value from the data collected. Went from around 150 to 800 internal users.

We have not yet managed to bring everything into a wide event table but as long as the logs can be joined with the metrics under an interface that the developers feel comfortable with and the solution is cost-effective enough to allow all relevant context to be collected you will get far imo.

New comment by AntonFriberg in "A practical approach to schema changes in ClickHouse"

AntonFriberg — Tue, 12 Dec 2023 15:04:42 +0000

Thanks Randal! I hope to be able to complete a follow-up post on how to automate most of the schema changes by utilizing a form of data contract with the data owner of each metric table. It is very easy to roll out incorrect changes when working with the materialized views in a sharded ClickHouse table due to the need to having to toggle the materialized view and distributed tables when changing the underlying long-term storage tables.

New comment by AntonFriberg in "A practical approach to schema changes in ClickHouse"

AntonFriberg — Tue, 12 Dec 2023 13:49:17 +0000

Author here, thanks! Feel free to share it on other platforms. Let me know if you have any questions.

A practical approach to schema changes in ClickHouse

AntonFriberg — Tue, 12 Dec 2023 12:17:38 +0000

Article URL: https://engineeringat.axis.com/schema-changes-clickhouse/

Comments URL: https://news.ycombinator.com/item?id=38611220

Points: 7

# Comments: 4

New comment by AntonFriberg in "Rivian embraces Tesla's charging standard for EVs"

AntonFriberg — Tue, 20 Jun 2023 14:31:26 +0000

As a non-native English speaker I was confused by the need to capitalize so many words (but not all) in headers. I make frequent use of https://capitalizemytitle.com/ to make sure that I follow some type of standard.

Democratizing Production-Scale Distributed Deep Learning (2018)

AntonFriberg — Thu, 08 Nov 2018 13:01:46 +0000

Article URL: https://arxiv.org/abs/1811.00143

Comments URL: https://news.ycombinator.com/item?id=18405929

Points: 3

# Comments: 0