2025 Changelog

ClickHouse release v25.3.3.42-lts (c4bfe68b052) FIXME as compared to v25.3.2.39-lts (3ec1fd3f690)

Improvement

• Backported in #78899: Fix IN clause type coercion for BFloat16 (i.e. SELECT toBFloat16(1) IN [1, 2, 3]; now returns 1). Closes #78754. #78839 (Raufs Dunamalijevs).
• Backported in #79137: Remove settings during recoverLostReplica same as it was done in: https://github.com/ClickHouse/ClickHouse/pull/78637. #79113 (Nikita Mikhaylov).

Bug Fix (user-visible misbehavior in an official stable release)

• Backported in #78790: Fix not working skip indexes with expression with literals in analyzer and remove trivial casts during indexes analysis. #77229 (Pavel Kruglov).
• Backported in #79285: Fixed refreshable materialized view in Replicated database not working on newly added replicas. #77774 (Michael Kolupaev).
• Backported in #78438: Fix metadata override in Database Replicated which could have happened due to a RENAME query executed right after an ALTER query. #78107 (Nikolay Degterinsky).
• Backported in #78547: Mask azure access signature to be not visible to user or in logs. #78189 (Kseniia Sumarokova).
• Backported in #78528: Fix prefetch of substreams with prefixes in Wide parts. #78205 (Pavel Kruglov).
• Backported in #78952: Not schedule RefreshMV task if a replica's disable_insertion_and_mutation is true. A task is some insertion, it will failed if disable_insertion_and_mutation is true. #78277 (Xu Jia).
• Backported in #78979: Validate access to underlying tables for the Merge engine. #78339 (Pervakov Grigorii).
• Backported in #78649: FINAL modifier can be lost for Distributed engine table. #78428 (Yakov Olkhovskiy).
• Backported in #78534: Revert "Apply preserve_most attribute at some places in code" since it may lead to crashes. #78449 (Azat Khuzhin).
• Backported in #78760: Set at least one stream for reading in case there are zero planned streams after applying max_streams_to_max_threads_ratio setting. #78505 (Eduard Karacharov).
• Backported in #78614: ClickHouse is now able to figure out its cgroup v2 on systems with both cgroups v1 and v2 enabled. #78566 (Grigory Korolev).
• Backported in #78772: ObjectStorage cluster table functions failed when used with table level-settings. #78587 (Daniil Ivanik).
• Backported in #78685: Remove query settings during attach. #78637 (Raúl Marín).
• Backported in #78945: Fix crash in REFRESHABLE MV in case of ALTER after incorrect shutdown. #78858 (Azat Khuzhin).
• Backported in #79272: Keeper fix: Avoid triggering watches on failed multi requests. #79247 (Antonio Andelic).

NO CL CATEGORY

• Backported in #78326:. #78097 (Nikolai Kochetov).

NOT FOR CHANGELOG / INSIGNIFICANT

• Backported in #78333: Add Database Prefix in Kafka Table Logs for Improved Accuracy. #76720 (VicoWu).
• Backported in #78607: Log invalid HTTP version string. #78264 (Christoph Wurm).
• Backported in #78400: CI: Fix for migration to pyjwt auth. #78396 (Max Kainov).
• Backported in #78735: We do not count tables from the system database when we check the limit of tables, so we should also not check the limits for tables in system database. #78653 (Nikolay Degterinsky).