25.3.6.10034 Altinity Stable

Changes compared to upstream's v25.3.6.56-lts

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

• Skip indexes with lambda expressions could not be applied. Fix the case when high-level functions in the index definition exactly match the one in the query (ClickHouse#80025 by @KochetovNicolai via #918)
• Do not check for cyclic dependencies on create table with no dependencies. It fixes performance degradation of the use cases with creation of thousands of tables that was introduced in ClickHouse#65405 (ClickHouse#83077 by @Avogar via #916)
• Fix wrong results for grouping sets with ColumnConst and Analyzer (ClickHouse#79743 by @zvonand via #915)

Improvements

• Add _time virtual column in S3Queue engine (ClickHouse#78926 by @ianton-ru via #913)

CI Fixes or Improvements

• Remove guard pages for threads and async_socket_for_remote/use_hedge_requests. Change the allocation method in FiberStack from mmap to aligned_alloc. Since this splits VMAs and under heavy load vm.max_map_count can be reached. (ClickHouse#78423 by @azat, ClickHouse#79147 and ClickHouse#79533 by @CheSema via #917)

Not for changelog

• Ignore parse error in system.distributed_ddl_queue (ClickHouse#79369 by @ilejn via #914)
• Iceberg as alias for DataLakeCatalog with catalog_type='rest' (#822 by @ianton-ru via #912)
• Altinity branding patches

Build report

Release notes

Packages

Available for both AMD64 and Aarch64 from https://builds.altinity.cloud/ as either .deb, .rpm, or .tgz

Docker images

Available for both AMD64 and Aarch64: altinity/clickhouse-server/25.3.6.10034.altinitystable