TiDB 1.0.8 Release Notes
On February 11, 2018, TiDB 1.0.8 is released with the following updates:
TiDB
- Fix issues in the
Outer Joinresult in some scenarios - Optimize the performance of the
InsertIntoIgnorestatement - Fix the issue in the
ShardRowIDoption - Add limitation (Configurable, the default value is 5000) to the DML statements number within a transaction
- Fix an issue in the Table/Column aliases returned by the
Preparestatement - Fix an issue in updating statistics delta
- Fix a panic error in the
Drop Columnstatement - Fix an DML issue when running the
Add Column Afterstatement - Improve the stability of the GC process by ignoring the regions with GC errors
- Run GC concurrently to accelerate the GC process
- Provide syntax support for the
CREATE INDEXstatement
PD
- Reduce the lock overheat of the region heartbeats
- Fix the issue that a hot region scheduler selects the wrong Leader
TiKV
- Use
DeleteFilesInRangesto clear stale data and improve the TiKV starting speed - Using
Decimalin Coprocessor sum - Sync the metadata of the received Snapshot compulsorily to ensure its safety
To upgrade from 1.0.7 to 1.0.8, follow the rolling upgrade order of PD -> TiKV -> TiDB.