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TiDB 2.1.10 Release Notes
/docs/dev/releases/release-2.1.10/
/docs/dev/releases/2.1.10/
TiDB 2.1.10 was released on May 22, 2019, with various bug fixes and improvements. The release includes fixes for issues related to table schema, read results, generated columns, datetime functions, slow logs, and more. Additionally, improvements were made to TiKV and tools like TiDB Lightning and TiDB Binlog. The TiDB Ansible version 2.1.10 also received updates.

TiDB 2.1.10 Release Notes

Release date: May 22, 2019

TiDB version: 2.1.10

TiDB Ansible version: 2.1.10

TiDB

  • Fix the issue that some abnormalities cause incorrect table schema when using tidb_snapshot to read the history data #10359
  • Fix the issue that the NOT function causes wrong read results in some cases #10363
  • Fix the wrong behavior of Generated Column in the Replace or Insert on duplicate update statement #10385
  • Fix a bug of the BETWEEN function in the DATE/DATETIME comparison #10407
  • Fix the issue that a single line of a slow log that is too long causes an error report when using the SLOW_QUERY table to query a slow log #10412
  • Fix the issue that the result of DATETIME plus INTERVAL is not the same with that of MySQL in some cases #10416, #10418
  • Add the check for the invalid time of February in a leap year #10417
  • Execute the internal initialization operation limitation only in the DDL owner to avoid a large number of conflict error reports when initializing the cluster #10426
  • Fix the issue that DESC is incompatible with MySQL when the default value of the output timestamp column is default current_timestamp on update current_timestamp #10337
  • Fix the issue that an error occurs during the privilege check in the Update statement #10439
  • Fix the issue that wrong calculation of RANGE causes a wrong result in the CHAR column in some cases #10455
  • Fix the issue that the data might be overwritten after decreasing SHARD_ROW_ID_BITS #9868
  • Fix the issue that ORDER BY RAND() does not return random numbers #10064
  • Prohibit the ALTER statement modifying the precision of decimals #10458
  • Fix the compatibility issue of the TIME_FORMAT function with MySQL #10474
  • Check the parameter validity of PERIOD_ADD #10430
  • Fix the issue that the behavior of the invalid YEAR string in TiDB is incompatible with that in MySQL #10493
  • Support the ALTER DATABASE syntax #10503
  • Fix the issue that the SLOW_QUERY memory engine reports an error when no ; exists in the slow query statement #10536
  • Fix the issue that the Add index operation in partitioned tables cannot be canceled in some cases #10533
  • Fix the issue that the OOM panic cannot be recovered in some cases #10545
  • Improve the security of the DDL operation rewriting the table metadata #10547

PD

  • Fix the issue that the priority of the leader does not take effect #1533

TiKV

  • Reject transferring the leader in a Region whose configuration has been changed recently to avoid transfer failure #4684
  • Add the priority label for Coprocessor metrics #4643
  • Fix the possible dirty read issue during transferring the leader #4724
  • Fix the issue that CommitMerge causes the restart failure of TiKV in some cases #4615
  • Fix unknown logs #4730

Tools

  • TiDB Lightning
    • Add the retry feature when TiDB Lightning fails to send data to importer #176
  • TiDB Binlog
    • Optimize the Pump storage log to facilitate troubleshooting #607

TiDB Ansible

  • Update the configuration file of TiDB Lightning and add the tidb_lightning_ctl script #d3a4a368