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TiDB 2.1.13 Release Notes
/docs/dev/releases/release-2.1.13/
/docs/dev/releases/2.1.13/
TiDB 2.1.13 was released on June 21, 2019. It includes features to scatter row IDs, optimize DDL metadata lifetime, fix OOM issue, update statistics, support Region presplit, improve MySQL compatibility, and fix estimation issues. TiKV fixes incomplete snapshots and adds a feature to check the validity of the block-size configuration. TiDB Binlog fixes wrong offset and adds advertise-addr configuration in Drainer.

TiDB 2.1.13 Release Notes

Release date: June 21, 2019

TiDB version: 2.1.13

TiDB Ansible version: 2.1.13

TiDB

  • Add a feature to use SHARD_ROW_ID_BITS to scatter row IDs when the column contains an AUTO_INCREMENT attribute to relieve the hotspot issue #10788
  • Optimize the lifetime of invalid DDL metadata to speed up recovering the normal execution of DDL operations after upgrading the TiDB cluster #10789
  • Fix the OOM issue in high concurrent scenarios caused by the failure to quickly release Coprocessor resources, resulted from the execdetails.ExecDetails pointer #10833
  • Add the update-stats configuration item to control whether to update statistics #10772
  • Add the following TiDB-specific syntax to support Region presplit to solve the hotspot issue:
  • Add the PRE_SPLIT_REGIONS table option #10863
  • Add the SPLIT TABLE table_name INDEX index_name syntax #10865
  • Add the SPLIT TABLE [table_name] BETWEEN (min_value...) AND (max_value...) REGIONS [region_num] syntax #10882
  • Fix the panic issue caused by the KILL syntax in some cases #10879
  • Improve the compatibility with MySQL for ADD_DATE in some cases #10718
  • Fix the wrong estimation for the selectivity rate of the inner table selection in index join #10856

TiKV

  • Fix the issue that incomplete snapshots are generated in the system caused by the iterator not checking the status #4940
  • Add a feature to check the validity for the block-size configuration #4930

Tools

  • TiDB Binlog
    • Fix the wrong offset issue caused by Pump not checking the returned value when it fails to write data #640
    • Add the advertise-addr configuration in Drainer to support the bridge mode in the container environment #634