release-2.0.8.md

title	aliases	summary
TiDB 2.0.8 Release Notes	/docs/dev/releases/release-2.0.8/ /docs/dev/releases/208/	TiDB 2.0.8 was released on October 16, 2018, with improvements in system compatibility and stability. The release includes various bug fixes for TiDB and TiKV, addressing issues related to AUTO-ID, etcd session recovery, time zone handling, memory leaks, and join conversions. The TiKV bug fix resolves the increasing memory consumption by Raftstore EntryCache when a node goes down.

TiDB 2.0.8 Release Notes

On October 16, 2018, TiDB 2.0.8 is released. Compared with TiDB 2.0.7, this release has great improvement in system compatibility and stability.

TiDB

• Improvement
  • Slow down the AUTO-ID increasing speed when the Update statement does not modify the corresponding AUTO-INCREMENT column #7846
• Bug fixes
  • Quickly create a new etcd session to recover the service when the PD leader goes down #7810
  • Fix the issue that the time zone is not considered when the default value of the DateTime type is calculated #7672
  • Fix the issue that duplicate key update inserts values incorrectly in some conditions #7685
  • Fix the issue that the predicate conditions of UnionScan are not pushed down #7726
  • Fix the issue that the time zone is not correctly handled when you add the TIMESTAMP index #7812
  • Fix the memory leak issue caused by the statistics module in some conditions #7864
  • Fix the issue that the results of ANALYZE cannot be obtained in some abnormal conditions #7871
  • Do not fold the function SYSDATE, to ensure the returned results are correct #7894
  • Fix the substring_index panic issue in some conditions #7896
  • Fix the issue that OUTER JOIN is mistakenly converted to INNER JOIN in some conditions #7899

TiKV

• Bug fix
  • Fix the issue that the memory consumed by Raftstore EntryCache keeps increasing when a node goes down #3529