TiDB - v2.0.8

Improvements

• Slow down the AUTO_INCREMENT 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