Weekly update in TiDB

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

Added

• Support session variables warning_count and error_count
• Support BIT_OR in the new aggregation function framework

Fixed

• Fix the privilege bug when reusing chunks
• Fix the issue that the Hash Aggregate operator cannot exit
• Fix a panic on Stream Aggregate
• Fix the results of SHOW CREATE TABLE when adding indices
• Fix the results of non-integer inputs for bit related aggregate functions

Improved

• Use feedback to refine updating statistics information
• Refactor statistics updating mechanism to speed up analyzing tables
• Allow the user to kill his own connections without the SUPER privilege

Weekly update in TiSpark

Last week, we landed 5 PRs in the TiSpark repositories.

Improved

• Allow TiSpark to retrieve row ID
• Add more rules for scalafmt

Fixed

• Fix the issue that the scan iterator throws NoSuchElement Exception when encountering the last Region
• Fix the issue that tispark-sql dbName is displayed as the table name

Weekly update in TiKV and PD

Last week, we landed 26 PRs in the TiKV and PD repositories.

Added

• Add a new scalar function multiply_int_unsigned
• Support getting Region approximate middle key by tikv-ctl
• Add an option to restrict the number of RocksDB log files
• Add the development workflow file for PD

Fixed

• Fix the split check bug when region_max_size equals to region_split_size
• Fix the panic issue when no operator is produced by the adjacent Region scheduler
• Fix the issue that the store space is used up due to moving replicas

Improved

• Use crossbeam-channel to improve the performance
• Enlarge the total slots of the scheduler latch
• Exit all Goroutines ASAP when the PD client is closed
• Send back HTTP 400 where there is a client error

New contributors (Thanks!)

• TiDB: zbdba
• TiSpark: gkdoc
• TiKV: GuillaumeGomez