Weekly update in TiDB

Last week, we landed 43 PRs in the TiDB repositories.

Added

• Support the ODBC syntax of time/date/timestamp literal
• Add MaxProcs and make the runtime.GOMAXPROCS parameter configurable

Fixed

• Fix a bug about index join
• Close HashJoin goroutines as soon as possible to avoid unexpected errors
• fetchShowTableStatus should append an integer to the third column instead of a string
• Correct the behavior when RunWorker is false
• Refine the typeInfer of group_concat

Improved

• Avoid the Children type assertion
• Merge IntColumnRange with NewRange
• Upgrade the username length limit to 32 to be compatible with MySQL 5.7
• Garbage collects useless stats info
• InsertExec eliminates unnecessary CastValue operations
• Speed up row count estimation
• Support encoding a Chunk row
• Use dep instead of glide
• Optimize the insert ignore statement
• Support Chunk in:
  • HashJoinExec
  • ExecuteExec

Weekly update in TiKV and PD

Last week, we landed 25 PRs in the TiKV and PD repositories.

Added

• Add the node case
• Support Region split
• Support query regions by read/write flow

Fixed

• Change the version
• Fix a RocksDB task name error
• Cancel call when refreshing client

Improved

• Use dep instead of glide
• Optimize write type parsing for MVCC properties collector
• Update README and upgrade Dockerfile golang:1.9.2
• Specify gRPC event engine
• Add the debug log
• Fix some ineffassign to improve the GoReport Result
• Rename AggregationExecutor to HashAggExecutor
• Improve the GoReport Result
• Dump the ConfChange type Raft log entry
• Make meta key return array

New contributor (Thanks!)

• PD: maiyang