Weekly Update 2018-04-02

[zhangyanqing]

New contributors (Thanks!)

• chenyangyang
• 何晨
• 康晓宁
• MatthiasSchuster

Weekly update in TiDB

Last week, we landed 49 PRs in the TiDB repositories.

Added

• Support show grants for current_user();
• Add manual GC back for some KV API users
• Support using a decimal in INTERNAL

Fixed

• Fix an unsigned decimal
• Fix a potential goroutine leak problem in copIterator
• Fix the AdminCheckTable bug when the column is nil and has a default value
• Fix type infer for the binary literal
• Fix a bug that lexer.Reset() cannot be reset to the initial state
• Handle the truncate error in BinaryLiteral.ToInt
• Fix a bug when applying the top-n push down rule

Improved

• Recover a panic in adding index workers
• Improve performance of DecodeBytes in DecodeOneToChunk
• Use scientific notation to format float value
• Check the gRPC error message before returning a critical error

Weekly update in TiSpark

Last week, we landed 6 PRs in the TiSpark repositories.

Fixed

• Fix excessive dag columns
• Fix estimatedRowCount when the pushdown predicate is not present

Weekly update in TiKV and PD

Last week, we landed 21 PRs in the TiKV and PD repositories.

Added

• Add import-mode arguments to tune configurations for importing data
• Add RegionOption for picking Region randomly
• Add the diagnose API
• Set eval_warnings in SelectResponse.warnings or StreamResponse.warnings
• Clean up obsoleted SST files periodically
• Initiate the half split Region
• Support admin splitting Region

Fixed

• Remove redundant configuration
• Fix the bug of ThreadSafeCache Get method lock
• Fix metrics of the replica checker
• Fix a bug of config show all

Improved

• Relax the abnormal leader missing check
• Make sending snapshots asynchronous in a CpuPool
• Avoid passing CpuPool into OnResponse