FIND-20260330-004 · 2026-03-30 · Innovation Veille
ClickHouse 26.2 — QBit vector type GA, time-based streaming inserts, TOTP auth, BigLake integration
release
HIGH
ClickHouse 26.2 (released 2026-03-16, latest stable v26.2.6.27 on 2026-03-28) is a major feature release with 25 new features, 43 performance optimizations, and 183 bug fixes. Highlights: QBit (vector embedding type) is now production-ready enabling AI similarity search; input_format_max_block_wait_ms allows time-based streaming flush intervals for better real-time pipeline control; native TOTP authentication (no extension required); Google BigLake catalog support for data lake federation; 3.2x faster RIGHT/FULL JOINs; ClickStack observability UI now embedded in CH itself. Small inserts are now batched by default and deduplication is enabled by default.
Source
https://clickhouse.com/blog/clickhouse-release-26-02
ODS Impact
ODS uses ClickHouse as the OLAP layer (P2 phase, Zero-ETL data platform). The QBit vector type directly enables AI-powered document search across DocStore/SecureMail data. Time-based streaming inserts are critical for the Redpanda → ClickHouse ingestion pipeline. TOTP auth improves security posture for ClickHouse admin access. The deduplication-by-default change is a breaking behavior change — evaluate before upgrading existing tables.
Security Review
License: Apache-2.0 | Maintenance: ACTIVE | Risk: LOW | Recommendation: SAFE_TO_USE
Tags
clickhouse
release
vector-search
streaming
zero-etl
olap
totp
ai