Block Builder: a new Mimir Component (Mimir Community Call February 2026)

Описание: At today’s community call, we will hear from David Grant, one of the engineers who has brought a new component, the Block Builder, into Mimir. Using the Ingest Storage architecture in Mimir 3.0, the Block Builder takes over the block-building responsibility from the Ingester. This feature is experimental in Mimir today, but is rolling out to production inside of Grafana Labs now. This is a great time to introduce the component, discuss the motivation, and show where it fits in the larger architecture.

Come join the conversation at https://slack.grafana.com/ in the #mimir channel, or on GitHub at https://github.com/grafana/mimir

Chapters:

0:00 Introductions
0:52 Topic introduction
3:23 Block Builder topic
3:49 Recap of ingest storage architecture
5:05 How does block builder fit in
5:36 Block builder design
6:42 Block builder architecture
8:09 Design benefits
9:44 Block builder internals
17:43 Ingestion limits (usage-tracker notable mention)
20:35 Q&A
21:03 Q&A: When will the Block Builder become mandatory?
21:50 Q&A: What was the most exciting part of Block Builder to build?
22:40 Q&A: How did you know the blocks Block Builder writes are correct?
22:44 Q&A: Is it possible to recover incomplete blocks now using Block Builder?
22:30 Wrap up