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@jaogoy jaogoy released this 11 Apr 14:40
· 1370 commits to main since this release
3.4.2
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Learn about vigilant mode.

Release Date: April 10, 2025

Improvements

  • FE supports graceful shutdown to improve system availability. When exiting FE via ./stop_fe.sh -g, FE will first return a 500 status code to the front-end Load Balancer via the /api/health API to indicate that it is preparing to shut down, allowing the Load Balancer to switch to other available FE nodes. Meanwhile, FE will continue to run ongoing queries until they finish or timeout (default timeout: 60 seconds). #56823

Bug Fixes

The following issues have been fixed:

  • Partition pruning might not work if the partition column is a generated column. #54543
  • Incorrect parameter handling in the concat function could cause a BE crash during query execution. #57522
  • The ssl_enable property did not take effect when using Broker Load to load data. #57229
  • When NULL values exist, querying subfields of STRUCT-type columns could cause a BE crash. #56496
  • When modifying the bucket distribution of a table with the statement ALTER TABLE {table} PARTITIONS (p1, p1) DISTRIBUTED BY ..., specifying duplicate partition names could result in failure to delete internally generated temporary partitions. #57005
  • In a shared-data cluster, running SHOW PROC '/current_queries' resulted in the error "Error 1064 (HY000): Sending collect query statistics request fails". #56597
  • Running INSERT OVERWRITE loading tasks in parallel caused the error "ConcurrentModificationException: null", resulting in loading failure. #56557
  • After upgrading from v2.5.21 to v3.1.17, running multiple Broker Load tasks concurrently could cause exceptions. #56512

Behavior Changes

  • The default value of the BE configuration item avro_ignore_union_type_tag has been changed to true, enabling the direct parsing of ["NULL", "STRING"] as STRING type data, which better aligns with typical user requirements. #57553
  • The default value of the session variable big_query_profile_threshold has been changed from 0 to 30 (seconds). #57177
  • A new FE configuration item enable_mv_refresh_collect_profile has been added to control whether to collect Profile information during materialized view refresh. The default value is false (previously, the system collected Profile by default). #56971
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