3.3.4

Release date: September 30, 2024

New Features

• Supports creating asynchronous materialized views on List Partition tables. #46680 #46808
• List Partition tables now support Nullable partition columns. #47797
• Supports viewing external file schema information using DESC FILES(). #50527
• Supports viewing replication task metrics via SHOW PROC '/replications'. #50483

Improvements

• Optimized data recycling performance for TRUNCATE TABLE in shared-data clusters. #49975
• Supports intermediate result spilling for CTE operators. #47982
• Supports adaptive phased scheduling to alleviate OOM issues caused by complex queries. #47868
• Supports predicate pushdown for STRING-type date or datatime columns in specific scenarios. #50643
• Supports COUNT DISTINCT computation on constant semi-structured data. #48273
• Added a new FE parameter lake_enable_balance_tablets_between_workers to enable tablet balancing for tables in shared-date clusters. #50843
• Enhanced query rewrite capabilities for generated columns. #50398
• Partial Update now supports automatically populating columns with default values of CURRENT_TIMESTAMP. #50287

Bug Fixes

Fixed the following issues:

• The error "version has been compacted" caused by an infinite loop on the FE side during Tablet Clone. #50561
• ISO- formatted DATETIME types cannot be pushed down. #49358
• In concurrent scenarios, data still existed after the tablet was deleted. #50382
• Incorrect results returned by the yearweek function. #51065
• An issue with low cardinality dictionaries in ARRAY during CTE queries. #51148
• After FE restarts, partition TTL-related parameters were lost for materialized views. #51028
• Data loss in columns defined with CURRENT_TIMESTAMP after upgrading. #50911
• A stack overflow caused by the array_distinct function. #51017
• Activation failures for materialized views after upgrading due to changes in default field lengths. You can avoid such issues by setting enable_active_materialized_view_schema_strict_check to false. #50869
• Resource group property cpu_weight can be set to a negative value. #51005
• Incorrect statistics for disk capacity information. #50669
• Constant fold in the replace function. #50828

Behavior Changes

• Changed the default replica number for external catalog-based materialized views from 1 to the value of the FE parameter default_replication_num (Default value: 3). #50931