Weekly update in TiDB

Last week, we landed 68 PRs in the TiDB repository.

Added

• Add the SHOW TABLE REGIONS syntax
• Add support for MAX_EXECUTION_TIME

Improved

• Add TiKVTxnCmdCounter to metrics
• Refine the multi-query response of the text protocol
• Refine the output format for the tidb-specific variables of boolean type
• Parse and ignore PARTITION BY LIST
• Improve the calculation of column size
• Avoid sending a signal to the w.done channel everywhere in the runGCJob function

Fixed

• Fix the error that occurs when executing two DDL operations in parallel
• Fix getIntervalFromDecimal in DATE_ADD()
• Fix the microseconds behavior in DATE_ADD()
• Fix the error that occurs when converting string to float or integer
• Fix the issue that SUBTIME ADDTIME returns NULL with a warning
• Fix the issue that the Mod(%), Multiple(*) and Minus(-) operators meet inconsistent 0 results
• Disable the projection elimination for the Select plan of Update
• Fix the error in the NAME_CONST function
• Change the order of error judgement
• Fix the overflow check of types/convert.go::floatStrToIntStr

Weekly update in TiSpark

Last week, we landed 9 PRs in the TiSpark repository.

Fixed

• Fix an improper response with the Region error

Added

• Add the support for splitting index Regions if the schema has any index

Weekly update in TiKV and PD

Last week, we landed 39 PRs in the TiKV and PD repositories.

Improved

• Make a tiny refactor for prewrite
• Improve the performance of detect
• Support follower_read
• Return RegionError when TiKV is closing
• Refactor the convert to uint functions

Added

• Add the to_numeric_string method for Duration/DateTime
• Add benchmarks for rollback
• Add the cast * as int RPN functions
• Add the in_union utility method for RpnFnCallExtra/ScalarFunc

Fixed

• Fix the problem of double running nodes
• Fix the format for the Region meta key
• Remove the cfg setting which causes failure in make test

New contributors (Thanks!)

tidb:

• unknwon
• wty4427300

tikv:

• lucab

parser:

• gleonid