Weekly update in TiDB

Last week, we landed 32 PRs in the TiDB repositories.

Added

• Add the FlagIgnoreTruncate/FlagTruncateAsWarning flag to control the behavior of truncated errors.

• Add the prompt text flag.

• Add the rawkv metrics to profile the rawkv API performance.

• Add a comparable varint encoding/decoding method to make encoded data smaller.

• Support the timediff built-in function.

• Support the following built-in functions: ln(), log(), log2(), log10().

Fixed

• A bug that ignores primary key’s unsigned attribute.

• A bug that ignores error in the distsql layer.

• Allow default value to be Null when the column has the auto_increament attribute to be compatible with MySQL 5.6.

• A bug in the insert statement that ignores error.

• Fix bugs in the cost-based optimization framework: #2243

Improved

• Refactor the time type related code: #2185, #2190, #2206, #2233, #2261

• Remove the util/bytes package to clean up the code.

• Refactor the code to remove the evaluator.Eval() method: #2222,

• Improve test coverage for the util/segmentmap package.

• Recover from panics caused by malformated mysql packet to make tidb-server more robust.

New contributor

• Bai Yang

Weekly update in TiKV

Last week, we landed 11 PRs in the TiKV repositories.

Added

• Add a configuration to disable data sync to speed up loading data.

• Filter the pending peers for Placement Driver (PD) scheduler.

• Add pd-ctl to operate PD more easily.

Fixed

• Update the advertise peer urls from etcd to fix #435.

Improved

• Read and verify snapshot file in one step.

• Use a smaller interval to make Raft tick more accurate.

• Clean up the tombstone store to fix #401.

• Use delete_file_in_range when clean up the tombstone regions.