TiDB - v5.3.4

Bug fixes

• Fix the issue that the Region cache is not cleaned up in time when the Region is merged #37141
• Fix the issue that TiDB writes wrong data due to the wrong encoding of the ENUM or SET column #32302
• Fix the issue that database-level privileges are incorrectly cleaned up #38363
• Fix the issue that the grantor field is missing in the mysql.tables_priv table #38293
• Fix the issue that KILL TIDB cannot take effect immediately on idle connections #24031
• Fix the issue that the return type of date_add and date_sub is different between TiDB and MySQL #36394, #27573
• Fix the incorrect INSERT_METHOD value when Parser restores table options #38368
• Fix the issue that authentication fails when a MySQL client of v5.1 or earlier connects to the TiDB server #29725
• Fix wrong results of GREATEST and LEAST when passing in unsigned BIGINT arguments #30101
• Fix the issue that the result of concat(ifnull(time(3)) in TiDB is different from that in MySQL #29498
• Fix the issue that the avg() function returns ERROR 1105 (HY000): other error for mpp stream: Could not convert to the target type - -value is out of range. when queried from TiFlash #29952
• Fix the issue that ERROR 1105 (HY000): close of nil channel is returned when using HashJoinExec #30289
• Fix the issue that TiKV and TiFlash return different results when querying logical operations #37258
• Fix the issue that the EXPLAIN ANALYZE statement with DML executors might return result before the transaction commit finishes #37373
• Fix the issue that Region cache is not cleared properly after merging many Regions #37174
• Fix the issue that the EXECUTE statement might throw an unexpected error in specific scenarios #37187
• Fix the issue that GROUP CONCAT with ORDER BY might fail when the ORDER BY clause contains a correlated subquery #18216
• Fix wrong results returned when length and width are incorrectly set for Decimal and Real when using plan cache #29565