Weekly update in TiDB

Last week, we landed 35 PRs in the TiDB repositories.

Added

• Support the load stats command

Removed

• Remove iota in DDL package to make the constant clearer

Fixed

• limit and offset can be parameter markers in the prepared statement
• IndexOption can be a list in creating a table
• Fix the bug of some field length missing in creating a table
• Fix the bug of parsing Datetime overflow
• Trim leading zeros before parsing integer literal
• Fix the float truncate bug

Improved

• Importer tools support loadStats by path
• Support mock table info for importer tools
• Let DO statement be a read only statement
• Improve an error handling in ddl
• Reduce memory allocation in buildDataSource
• Make Explain clearer
• Add the metrics package and recover Panic of Worker
• Refine the joinResult generator to return maxChunkSize chunk
• Limit lock count for ScanLock request
• Enhance the IndexRange calculation
• Refine metrics in TiDB:
  • Refine DistSQL metrics
  • Add metrics for the meta package
  • Move and refine the server metrics
  • Add metrics for DDL syncer
  • Update metrics for session

Weekly update in TiSpark

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

Improved

• Switch integration test to scalatest framework

Fixed

• Fix Average on BIGINT overflow
• Fix scala version for some libraries

Weekly update in TiKV and PD

Last week, we landed 22 PRs in the TiKV and PD repositories.

Added

• PD: implement GetAllStores API
• TiKV: implement GetAllStores API
• Add PD health API
• Support setting leader priority to etcd members
• Sync the PD leader with the etcd leader
• Add the future pool

Fixed

• Fix hot Region DistinctScoreFilter
• Fix and update Region size
• Fix cleanup for raw KV

Improved

• Check Range for DAG and analysis
• Sync the snapshots
• Remove the sync snapshot file
• Add operator duration metrics
• Support simple command line args
• Add Region statistics
• Clear stale data using DeleteFilesInRanges

New contributor (Thanks!)

• TiDB: Boik