2017-05-15-tidb-weekly.md

title	date	summary	tags
Weekly update (May 08 ~ May 14, 2017)	2017-05-15	Last week, we landed 28 PRs in the TiDB repositories and 17 PRs in the TiKV repositories.	TiDB TiKV

Weekly update in TiDB

Last week, we landed 28 PRs in the TiDB repositories.

Added

• Add builtin function uncompress and uncompressdlength, convert_tz, period-diff

• Fill data into information_schema.key_column_usage.

• Add Open interface for Executor.

• Show warnings for Load Data statement.

• Support Json type and functions in parser.

• Support top-n operator in new planner.

Fixed

• Consider session variable time_zone for timestamp datum.

• Fix data race problem in IndexLookup Executor.

• Fix a bug in HashJoin Executor encoding/decoding.

• Return right value for @@version.

Improved

• Refator range calculation related code.

• Refactor expression evaluation framework: Add self attribute in builtin function.Return panic when calling wrong function on baseXBuiltinFunc.

Weekly update in TiKV

Last week, We landed 17 PRs in the TiKV repositories.

Added

• Use clap to parse command line options.

• Show TiKV instance downtime state in pd-ctl.

• Show scheduling operation history in pd-ctl.

• Show cluster ID in pd-ctl.

• Introduce SmallGroupFirstQueue to speedup point get later.

• Use zstd compression type.

• Add process metrics in Prometheus.

Fixed

• Fix dial wrong listening address bug.

• Remove the offline peer directly.

• Mark peer as pending_remove to avoid following operations.

Improved

• Add the reason of cluster ID mismatch in error log.

• Add log to apply delegate register and deregister.