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2025 Changelog

docs/changelogs/v25.8.11.66-lts.md

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2025 Changelog

ClickHouse release v25.8.11.66-lts (fa393206741) FIXME as compared to v25.8.10.7-lts (02ec3a1ea1e)

Improvement

  • Backported in #88492: Use S3 storage client with backup-specific settings (for example, backup_slow_all_threads_after_retryable_s3_error) for server-side (native) copy to a backup destination. Make s3_slow_all_threads_after_retryable_error obsolete. #87660 (Julia Kartseva).
  • Backported in #88537: Add more information for performance tracking in Iceberg SELECTs. #87903 (Daniil Ivanik).
  • Backported in #88300: Update azure sdk to include 'Content-Length' fix that is seen with copy and create container functionalities. #88278 (Smita Kulkarni).
  • Backported in #88742: Add config keeper_server.coordination_settings.check_node_acl_on_remove. If enabled, before each delete of a node, ACLs of both the node itself and parent node will be verified. Otherwise, only the ACL of the parent node will be verified. #88513 (Antonio Andelic).
  • Backported in #88781: Fixes memory leak due to GLOBAL IN (https://github.com/ClickHouse/ClickHouse/issues/88615). #88617 (pranavmehta94).
  • Backported in #88764: Add a step to postinstall script for clickhouse-keeper which enables starting on boot. #88746 (YenchangChan).

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

  • Backported in #88848: Fix inferring Date/DateTime/DateTime64 on dates that are out of supported range. #86184 (Pavel Kruglov).
  • Backported in #88594: Fix resolving table schema with url() table function when parallel_replicas_for_cluster_functions setting is set to 1. #87029 (Konstantin Bogdanov).
  • Backported in #88843: Fix unknown table error in insert select query with CTE, #85368. #87789 (Guang Zhao).
  • Backported in #88509: Fix reading null map subcolumn from Variants that cannot be inside Nullable. #87798 (Pavel Kruglov).
  • Backported in #88390: In AzureBlobStorage, updated to try native copy first and go to read & write on 'Unauthroized' error (In AzureBlobStorage, if storage accounts are different for source & destination we get 'Unauthorized' error). And fix applying "use_native_copy" when endpoint is defined in configuration. #87826 (Smita Kulkarni).
  • Backported in #88436: Fix for incorrect granules/partitions elimination for datetime-based keys, when using session_timezone setting in queries. #87987 (Eduard Karacharov).
  • Backported in #88420: Applies URI normalization before evaluation for the grants check introduced by https://github.com/ClickHouse/ClickHouse/pull/84503. #88089 (pufit).
  • Backported in #88656: Now DDL worker cleanup outdated hosts from replicas set. It will reduce amount of stored metadata in ZooKeeper. #88154 (alesapin).
  • Backported in #88284: Fixed propagation of is_shared flag in ColumnLowCardinality. It may lead to a wrong group-by result if a new value is inserted in a column after hash values are already pre-calculated and cached in the ReverseIndex. #88213 (Nikita Taranov).
  • Backported in #88459: Fixes a workload setting max_cpu_share. Now it can be used without max_cpus workload setting being set. #88217 (Neerav).
  • Backported in #88336: Now correlated subqueries will work with object storages. #88290 (alesapin).
  • Backported in #88356: Avoid trying to initialize DataLake databases while accessing system.projections and system.data_skipping_indices. #88330 (Azat Khuzhin).
  • Backported in #88430: Fix quadratic complexity in the countMatches function. Closes #88400. #88401 (Alexey Milovidov).
  • Backported in #88649: Big clusters with node numbers > 10 have a high probability of failing the restore with error [941] 67c45db4-4df4-4879-87c5-25b8d1e0d414 <Trace>: RestoreCoordinationOnCluster The version of node /clickhouse/backups/restore-7c551a77-bd76-404c-bad0-3213618ac58e/stage/num_hosts changed (attempt #9), will try again. The num_hosts node is overwritten by many hosts at the same time. The fix makes the setting to control attempts dynamic. Closes #87721. #88484 (Mikhail f. Shiryaev).
  • Backported in #88716: Fix potential crash caused by concurrent mutation of underlying const PREWHERE columns. #88605 (Azat Khuzhin).
  • Backported in #88906: After recovering, a Replicated database replica might get stuck for a long time printing messages like Failed to marked query-0004647339 as finished (finished=No node, synced=No node), it's fixed. #88671 (Alexander Tokmakov).
  • Backported in #88890: Fixes access validation on select for loop table function. #88802 (pufit).
  • Backported in #88835: Catch exceptions when async logging fails to prevent program aborts. #88814 (Raúl Marín).
  • Backported in #88940: Fix bug in the function reverseUTF8. In previous versions, it mistakenly reversed the bytes of UTF-8 code points of length 4. This closes #88913. #88914 (Alexey Milovidov).
  • Backported in #88976: Do not check access SET DEFINER <current_user>:definer when creating a view with SQL SECURITY DEFINER. #88968 (pufit).

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