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release-5.3.4.md

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TiDB 5.3.4 Release Notes
TiDB 5.3.4 was released on November 24, 2022. The release includes improvements to TiKV and bug fixes for TiDB, PD, TiFlash, Dumpling, and TiCDC. Some of the key bug fixes include issues related to TLS certificate reloading, Region cache cleanup, wrong data writing, database-level privileges, and authentication failures. Other fixes address issues with logical operators, stream timeout, leader switchover, and data dumping.

TiDB 5.3.4 Release Notes

Release date: November 24, 2022

TiDB version: 5.3.4

Improvements

  • TiKV

    • Reload TLS certificate automatically for each update to improve availability #12546

Bug fixes

  • TiDB

    • 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

  • PD

    • Fix the issue that PD cannot correctly handle dashboard proxy requests #5321
    • Fix the issue that the TiFlash learner replica might not be created in specific scenarios #5401
    • Fix inaccurate Stream timeout and accelerate leader switchover #5207

  • TiFlash

    • Fix the issue that logical operators return wrong results when the argument type is UInt8 #6127
    • Fix the issue that TiFlash bootstrap fails when 0.0 is used as the default value for integers, for example, `i` int(11) NOT NULL DEFAULT '0.0' #3157

  • Tools

    • Dumpling

      • Fix the issue that Dumpling cannot dump data when the --compress option and the S3 output directory are set simultaneously #30534

    • TiCDC

      • Fix the issue that changefeed state is incorrect because a MySQL-related error is not reported to the owner in time #6698