2025 Changelog

Backported in #86691: Forbid altering columns whose subcolumns are used in PK or partition expression. #86005 (Pavel Kruglov).
Backported in #86517: Fix logical error during filesystem cache dynamic resize. Closes #86122. Closes https://github.com/ClickHouse/clickhouse-core-incidents/issues/473. #86130 (Kseniia Sumarokova).
Backported in #86945: Fix cast from LowCardinality(Nullable(T)) to Dynamic. #86365 (Pavel Kruglov).
Backported in #86851: Fix 416 The range specified is invalid for the current size of the resource. The range specified is invalid for the current size of the resource when reading empty blobs from Azure blob storage for plain_rewritable disk. #86400 (Julia Kartseva).
Backported in #86890: Fix missing chunk header when send_chunk_header is enabled and UDF is invoked via HTTP protocol. #86606 (Vladimir Cherkasov).
Backported in #86870: Fix S3Queue logical error "Expected current processor {} to be equal to {}", which happened because of keeper session expiration. #86615 (Kseniia Sumarokova).
Backported in #86975: Fix TimeSeries engine table breaking creation of new replica in Replicated Database. #86845 (Nikolay Degterinsky).
Backported in #86859: Fix querying system.distributed_ddl_queue in cases where tasks are missing certain Keeper nodes. #86848 (Antonio Andelic).