Release notes: note ClickHouse 26.2+ requirement for Server v0.81.0+#2836
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Release notes: note ClickHouse 26.2+ requirement for Server v0.81.0+#2836amarkov-cw wants to merge 2 commits into
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W&B Server 0.81.0 introduced a runs-accelerator schema migration that uses a ClickHouse 26.2-only full-text index (TYPE text(tokenizer = array)). On older ClickHouse the migration fails on boot and the api/glue pods won't start, so deployments using the ClickHouse/OLAP features must be on CH 26.2+ before upgrading. Mirrors the existing v0.78 Weave/ClickHouse upgrade note. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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…and Keeper Self-managed ClickHouse runs the server and ClickHouse Keeper as two separate, independently-versioned images; upgrading only the server leaves Keeper behind. Call this out so on-prem upgraders move both to 26.2+. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
Adds an upgrade-prerequisite
<Note>to the v0.81.0 server release notes: deployments using the ClickHouse/OLAP features (Registry Search, Run Store Accelerator, or History) need ClickHouse 26.2+ before upgrading to v0.81.0+.Why
W&B Server 0.81.0 introduced a runs-accelerator schema migration (
services/gorilla/clickhouse/migrations/runs/001_init.up.sql) that uses a ClickHouse-26.2-only full-text index —INDEX … TYPE text(tokenizer = array). On older ClickHouse (e.g. 25.x) the migration fails on boot and theapi/gluepods don't start. 0.80 and earlier don't carry this migration. Dedicated/managed instances are already on 26.2; this is an on-prem / self-managed concern.This came up with a self-managed customer and isn't currently documented. It mirrors the existing v0.78 Weave/ClickHouse upgrade note already on this page.
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