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  • Mon, Mar 20, 2017

Weekly update in TiDB

Last week, we landed 33 PRs in the TiDB repositories.

Added

  • Add system table mysql.stats_meta: used for storing statistic information.

  • Add a Restful API to get region info from pd.

  • Add a system variable to control the behavior of unfolding subquery in in expression.

  • Add many builtin functions: acos, asin, atan, make_set, oct, pi, lpad, radians, exp, ip_v6

Fixed

  • Check truncated UTF8 string when casting value.

  • Fix data race.

  • Stop the service when meet critical error.

  • Keep the return value of builtin function conv consistent with MySQL when meet invalid input.

Improved

  • Refactor tikv coprocessor client: make code cleaner and fix memory leak.

  • Refactor code about aggregation pushdown and aggregation prunning: make code cleaner.

New Contributors

Thank you guys!

  • Huxley Hu

  • Zhao Yi Jun

  • silenceper

  • Rick Yu

  • Qiannan

  • Tao Meng

  • yangwenmai

  • Hongyuan Wang

  • 8cbx

  • alston111111

  • Du Chuan

Weekly update in TiKV

Last week, We landed 10 PRs in the TiKV repositories.

Added

  • Use SSE support by default.

  • Handle [CTRL + D] in pd-ctl (https://github.com/pingcap/pd/pull/570)

Fixed

  • Avoid panic when get the tombstone store information.

  • Check epoch in ReadIndex to avoid stale read.

  • Clean ReadIndex callback when peer is destroyed to avoid deadlock.

Improved

  • Queue vote to prevent followers from discarding it if region hasn’t been split.

  • Improve random picking region from cache.

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