2017-09-11-tidb-weekly.md

title	date	summary	tags
Weekly update (September 04 ~ September 10, 2017)	2017-09-11	Last week, we landed 49 PRs in the TiDB repositories and 32 PRs in the TiKV repositories.	TiDB TiKV

Weekly update in TiDB

Last week, we landed 49 PRs in the TiDB repositories.

Added

• Add the column size limit when creating table.
• Add the syntax for admin show ddl jobs.
• SSL/TLS support.

Fixed

• Fix an ORDER BY bug.
• Add entry limit for transactions when doing DDL job.
• Fix a bug during the limit operator pushdown.
• Check the default value of the column option in the CREATE TABLE statement.
• Fix the DEFAULT output in SHOW CREATE TABLE.
• Fix a bug during the TopN operator pushdown.
• Fix an OOM issue when analyzing tables in some cases.

Improved

• Do some prework before pushing down the analyze table statement.
• Rewrite fieldTp2EvalTp() to use mysql.TypeXXX instead of TypeClass.
• Add timezone for CastAsTime.
• Rewrite hashCode() for requireProp.
• Use temporary session in gc_worker instead of global singleton.
• Change the log package to logrus.
• Let allocID() return int to be more efficient.
• Rewrite hex and bit literals implementation.
• Support client specified collation.
• Refactor IndexLookUpExecutor.
• Update the time Add() implementation.
• Refactor the following expression/builtin-function evaluation framework:
  • FROM_UNIXTIME
  • EXTRACT
  • EXPORT_SET
  • GET_FORMAT
  • INTERVAL
  • FIELD
  • CONVERT
  • FORMAT
  • INSERT
  • Builtin abot JSON
  • CURRENT_TIME
  • TIME_TO_SEC, SEC_TO_TIME
  • INTDIV

New Contributor (Thanks!)

• Wang Guoliang

Weekly update in TiKV

Last week, We landed 32 PRs in the TiKV repositories.

Added

• Implement div_real and div_decimal for expression.
• Add JSON functions for DAG.
• Add the LIKE signature for DAG.
• Add the short name for raftdb in tikv-ctl.
• Implement the bit operation for expression.
• Implement the int_as_true and decimal/real_as_false for expression.
• Add the IfJson, IfNullJson signature and some flags for DAG.

Fixed

• Fixed capacity parsing.
• Fixed an unwrapping panic in scheduler.
• Drop the delete-range feature temporarily.

Improved

• Add more tests for config structs.
• Refactor 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 on PD.
• Cleanup the threadpool.
• Add the panic detail information.
• Optimize merging array elements.
• Use time.Since instead of time.Now().Sub.
• Check if the log is initialized when starting up.

New Contributor (Thanks!)

• Wang Guoliang