FIND-20260328-002 · 2026-03-28 · Innovation Veille
ClickHouse 26.3.2.3-lts released — new LTS branch
release
HIGH
ClickHouse v26.3.2.3-lts was released on March 27, 2026, establishing a new long-term support branch. The prior 26.2 release (February 2026) brought major features: deduplication enabled by default for all inserts, full-text search text indexes now GA, vector indexes larger than single-VM memory, and TOTP multi-factor authentication support. The LTS tag makes this the recommended production version.
Source
https://github.com/ClickHouse/ClickHouse/releases/tag/v26.3.2.3-lts
ODS Impact
ODS uses ClickHouse as the OLAP analytics layer in the Zero-ETL pipeline (Redpanda -> Debezium -> ClickHouse -> Metabase). The 26.3 LTS designation is relevant for P2 Data Platform work. The default deduplication change (26.2) is a breaking behavior change for materialized views — review all ClickHouse ingestion queries before upgrading. TOTP MFA is useful for securing the Metabase-to-ClickHouse connection.
Security Review
License: Apache-2.0 | Maintenance: ACTIVE | Risk: LOW | Recommendation: SAFE_TO_USE
Tags
clickhouse
olap
analytics
lts
release
data-platform