TiDB 2.0.2 Release Notes

On May 21, 2018, TiDB 2.0.2 is released. Compared with TiDB 2.0.1, this release has great improvement in system stability.

TiDB

• Fix the issue of pushing down the Decimal division expression
• Support using the USE INDEX syntax in the Delete statement
• Forbid using the shard_row_id_bits feature in columns with Auto-Increment
• Add the timeout mechanism for writing Binlog

PD

• Make the balance leader scheduler filter the disconnected nodes
• Modify the timeout of the transfer leader operator to 10s
• Fix the issue that the label scheduler does not schedule when the cluster Regions are in an unhealthy state
• Fix the improper scheduling issue of evict leader scheduler

TiKV

• Fix the issue that the Raft log is not printed
• Support configuring more gRPC related parameters
• Support configuring the timeout range of leader election
• Fix the issue that the obsolete learner is not deleted
• Fix the issue that the snapshot intermediate file is mistakenly deleted