2016-12-26-tidb-weekly.md

layout	title
post	Weekly Update

New Release

TiDB RC1 is released!

Weekly update in TiDB

Last week, we landed 34 PRs in the TiDB repositories.

Added

• Support the RPAD built-in function..

• Support the show keys from table from database statement.

Fixed

• Retry infinite times if the commit primary key times out.

• Do not push aggregation down to the memory tables.

• Fix a bug about the alter table statement.

Improved

• Refactor the time type related code: #2259, #2280, #2284, #2289, #2292

• Refactor optimizer: extract initialization related code into physical Initialization.

• Speed up the DDL statement.

• Avoid generating parser.go every time.

• Skip the constraint check for prewrite to improve the loading data speed.

• Speed up the add index statement.

New contributor

• silentred

Weekly update in TiKV

Last week, We landed 14 PRs in the TiKV repositories.

Added

• Add configuration to control the replica scheduling speed.

• Skip constraint check for prewrite to improve the loading data speed.

• Add region and store commands to pd-ctl.

• Add configuration to cache index and filter blocks in the block cache.

Fixed

• Report snapshot sending status reliably to fix #1377.

• Store short value in write cf directly to save space and improve performance.

Improved

• Remove unnecessary admin operators.

• Handle Raft ready append log in one WriteBatch to reduce the CPU usage and improve performance.

• Remove the down peer first when scheduling replicas.