Altinity Project Antalya Builds for ClickHouse® 25.8

Here are the detailed release notes for Altinity Project Antalya build version 25.8. For more details on the project, see:

• The project's README
• The project roadmap (for 2026 and 2025)
• The feature matrix

Release history

Version 25.8.14.20001 is the latest release. We recommend that you use this version.

v25.8.14.20001

Released 2026-01-29

CI Report | Release page

Altinity Antalya release v25.8.14.20001.altinityantalya (783cf36) as compared to upstream/v25.8.14.17-lts (85bdcee459593cd55faef3154a5e487b60119ff4)

Improvements

• Google cloud storage support for data lakes. (ClickHouse#93866 by @scanhex12 via #1318)
• Allow merge tree materialized / alias columns to be exported through part export. (#1324 by @arthurpassos)
• Add export_merge_tree_part_throw_on_pending_mutations and export_merge_tree_part_throw_on_pending_patch_parts to control the behavior of pending mutations / patch parts on the export part feature. By default it will throw. It is important to note that when exporting an outdated part it will never throw. (#1294 by @arthurpassos)
• Now engine=Hybrid can access columns which are defined as ALIAS in segments. (#1272 by @filimonov)
• Add query id to system.part_log, system_exports and system.replicated_partition_exports. (#1330 by @arthurpassos)
• Accept table function as destination for part export, inherit schema if not explicitly provided. (#1320 by @arthurpassos)

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

• Now ClickHouse will show data lake catalog database in SHOW DATABASES query by default. (ClickHouse#89914 by @alesapin via #1283)
• Fixed an issue when Iceberg columns with dot in names returned NULL as values. (#1319 by @mkmkme)
• Fixed two-level aggregation when using Merge over Distributed. (ClickHouse#87687 by @c-end + ClickHouse#88406 by @azat via #1328)
• Fix simple parquet reader v3 assert on bool column min/max. (ClickHouse#87095 by @al13n321 via #1269)

CI Fixes or Improvements

• Use reusable suite for regression workflow (#1267 by @strtgbb)
• A missing semicolon resulted in regression jobs always being green (#1286 by @strtgbb)

And ALL Antalya features from previous releases

Packages

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

Docker images

Available for both AMD64 and Aarch64: altinity/clickhouse-server:25.8.14.20001.altinityantalya

Full Changelog

v25.8.14.17-lts...v25.8.12.20747.altinityantalya

v25.8.12.20747

Released 2025-12-23

CI Report | Release page

Altinity Antalya release v25.8.12.20747.altinityantalya (f5fb292) as compared to upstream/v25.8.12.129-lts (a53ebd72b2d)

New Features

• Introduce token-based authentication and authorization (#1078 by @zvonand)
• Split large parquet files on part export, preserve entire settings object in part export (#1229 by @arthurpassos)

Improvements

• Profile events for task distribution in ObjectStorageCluster requests (#1172 by @ianton-ru)
• Set max message size on parquet v3 reader to avoid getting DB::Exception: apache::thrift::transport::TTransportException: MaxMessageSize reached (#1198 by @arthurpassos)

Performance Improvements

• Parquet reader v3 is enabled by default (ClickHouse#79012, ClickHouse#87735 and ClickHouse#88827 by @al13n321 via #1232)
• Distributed execution: better split tasks by row groups IDs, not by files (ClickHouse#87508 by @scanhex12 via #1237)

Critical Bug Fixes (crash, data loss, RBAC) or LOGICAL_ERROR

• Fix segfault on unexpected node shutdown (#1201 @ianton-ru)
• Fix segfault in requests to system,table when table in Iceberg catalog does not have snapshot (#1211 by @ianton-ru)
• Now datalakes catalogs will be shown in system introspection tables only if show_data_lake_catalogs_in_system_tables explicitly enabled (ClickHouse#88341 by @alesapin via #1239)

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

• Fix IN with Iceberg table (#1168 by @ianton-ru)
• Fix for task distribution in cluster requests (#1178 by @ianton-ru)
• Fix min/max value in Iceberg writes (#1192 by @ianton-ru)
• Fixes a bug where toDateTimeOrNull of a negative argument returns NULL (ClickHouse#90490 by @yariks5s via #1206)
• Fix missing leading slash for some local iceberg tables (#1212 by @zvonand)
• Revert “Fix redundant host resolution in DDL Worker” (#1219 by @ianton-ru)
• explicit POCO request for REST-polaris catalog (ClickHouse#91437 by @scanhex12 via #1224)
• Fix confusing cluster name and named collection name in cluster functions (#1234 by @ianton-ru)

Build/Testing/Packaging Improvement

• Fix test 03644_object_storage_correlated_subqueries (#1203 by @ianton-ru)

Documentation

• Documentation for Swarm features in Antalya branch (#1165 by @ianton-ru)

And ALL Antalya features from previous releases

Packages

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

Docker images

Available for both AMD64 and Aarch64: altinity/clickhouse-server:25.8.12.20747.altinityantalya

Full Changelog

v25.8.12.129-lts...v25.8.12.20747.altinityantalya

v25.8.9.20496

Released 2025-11-27

CI Report | Release page

Altinity Antalya release v25.8.9.20496.altinityantalya (f5fb292) as compared to v25.8.9.20238.altinityantalya (1a190de)

New Features

• Setting iceberg_timezone_for_timestamptz for Iceberg timestamptz type. (#1103 by @ianton-ru)
• icebergLocalCluster table function. (#1120 by @ianton-ru)
• Export partition support for ReplicatedMergeTree engine (#1124, #1161, #1167 by @arthurpassos)

Improvements

• Allow to read Iceberg data from any location. (#1092, #1163 by @zvonand)
• Preserve a few file format settings in the export part manifest to be able to better control parallelism. (#1106 by @arthurpassos)
• Do not send min/max info on swarm nodes when setting allow_experimental_iceberg_read_optimization is turned off. (#1109 by @ianton-ru)
• More metrics for Iceberg, S3, and Azure. (#1123 by @ianton-ru)
• Fix parquet writing not preserving original order when using single threaded writing with the native writer. (#1143 by @arthurpassos)
• Preserve the entire format settings object in export part manifest. (#1144 by @arthurpassos)
• Added experimental support in the Hybrid table engine to automatically reconcile column-type mismatches across segments via hybrid_table_auto_cast_columns (analyzer only). This allows queries to return consistent headers even when the underlying tables use different physical types. (#1156 by @filimonov)

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

• Fixed an issue when the missing “field_id” would cause the query to fail. (#1171 by @mkmkme)
• Fix joins with Iceberg tables Solved #1063. (#1082 by @ianton-ru)
• Check multiplexed connection before usage. (#1102 by @ianton-ru)
• Fix SYSTEM DROP FILESYSTEM CACHE ON CLUSTER. (#1130 by @ianton-ru)
• Fixed PREWHERE for StorageObjectStorageCluster. (#1137 by @ianton-ru)
• Never put hive partition columns in the format header. Fixes #87515. (ClickHouse#87528 by @arthurpassos via #1149)
• Fix crash due to incompatible headers when mutation changed the schema between scheduling and executing part exports. (#1150 by @arthurpassos)
• Revert support for ‘IN’ in cluster requests. (#1160 by @ianton-ru)
• Fixed logical errors in _row_number virtual column and iceberg positioned deletes. (ClickHouse#87220 by @al13n321 via #1136)
• Fix JSON Exception in iceberg table with timestamp column when using glue catalog. Resolves #90210. (ClickHouse#90209 by @alsugiliazova via #1151)
• Make parquet reader v3 preserve decimal precision information. (ClickHouse#87444 by @al13n321 via #1140)
• More fixes for parquet reader v3, enable it in stateless tests. (ClickHouse#87600 by @al13n321 via #1138)

And ALL Antalya features from previous releases

Packages

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

Docker images

Available for both AMD64 and Aarch64: altinity/clickhouse-server:25.8.9.20496.altinityantalya

Full Changelog

v25.8.9.20238.altinityantalya...v25.8.9.20496.altinityantalya

v25.8.9.20238

Released 2025-10-27

CI Report | Release page

Altinity Antalya release v25.8.9.20238.altinityantalya (1a190de) as compared to v25.8.9.20207.altinityantalya (044fdbd)

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

• Proper handling of opt-in AWS regions for S3. (#1101 by @zvonand)
• Do not throw exception when reading Iceberg metadata failed in call to system.tables. (#1098 by @zvonand)

Missing ports from previous releases

• Iceberg additional columns in system tables. (#959 and #1026 by @zvonand via #1095)
• Make DataLake metadata more lazy. (#742 by @ianton-ru via #1096)

And ALL Antalya features from previous releases

Packages

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

Docker images

Available for both AMD64 and Aarch64: altinity/clickhouse-server:25.8.9.20238.altinityantalya

Full Changelog

v25.8.9.20207.altinityantalya...v25.8.9.20238.altinityantalya

v25.8.9.20207

Released 2025-10-20

CI Report | Release page

Changes in Altinity Antalya release v25.8.9.20207 (044fdbd) as compared to upstream/v25.8.9.20-lts (a1f4cd9c23f)

New Feature

• Engine=hybrid implementation. (#1071 by @filimonov)

Experimental Feature

• Read optimization using Iceberg metadata Port of #1019 with many changes. (#1069, #1076 by @ianton-ru)

Improvement

• Fix data lake tables with a percent-encoded sequence in the name. (ClickHouse#87020 by @ianton-ru via #1060)
• Allow any partition strategy to accept part export. (#1083 by @arthurpassos)

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

• Fix for ‘virtual’ packet on connection lost (#1024 by @ianton-ru via #1059)
• Deduce Iceberg metadata from Glue’s Location. (#1070 by @zvonand)

And ALL Antalya features from previous releases

Packages

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

Docker images

Available for both AMD64 and Aarch64: altinity/clickhouse-server:25.8.9.20207.altinityantalya

Full Changelog

v25.8.9.20-lts...v25.8.9.20207.altinityantalya