3.3.5

Release date: October 23, 2024

New Features

• Supports millisecond and microsecond precision in the DATETIME type.
• Resource groups support CPU hard isolation.

Improvements

• Optimized performance and extraction strategy for Flat JSON. #50696
• Reduced memory usage for the following ARRAY functions:
  • array_contains/array_position #50912
  • array_filter #51363
  • array_match #51377
  • array_map #51244
• Optimized error messages when loading Null values into List partition keys with the Not Null attribute. #51086
• Optimized error messages for Files() when authentication fails in the Files function. #51697
• Optimized internal statistics for INSERT OVERWRITE. #50417
• Shared-data clusters support garbage collection (GC) for persistent index files. #51684
• Added FE logs to help diagnose FE out-of-memory (OOM) issues. #51528
• Supports recovering metadata from the metadata directory of FE. #51040

Bug Fixes

Fixed the following issues:

• A deadlock issue caused by PIPE exceptions. #50841
• Dynamic partition creation failures block subsequent partition creation. #51440
• An error is returned for UNION ALL queries with ORDER BY. #51647
• CTE in UPDATE statements causes hints to be ignored. #51458
• The load_finish_time field in the system-defined view statistics.loads_history does not update as expected after a loading task is completed. #51174
• UDTF mishandles multibyte UTF-8 characters. #51232

Behavior Changes

• Modified the return content of the EXPLAIN statement. After the change, the return content is equivalent to EXPLAIN COST. You can configure the level of details returned by EXPLAIN using the dynamic FE parameter query_detail_explain_level. The default value is COSTS, with other valid values being NORMAL and VERBOSE. #51439