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