2017-12-18-tidb-weekly.md

title	date	summary	tags
Weekly update (December 11 ~ December 17, 2017)	2017-12-18	Last week, we landed 46 PRs in the TiDB repositories, 10 PRs in the TiSpark repositories, and 14 PRs in the TiKV and PD repositories.	TiDB TiKV PD TiSpark

Weekly update in TiDB

Last week, we landed 46 PRs in the TiDB repositories.

Added

• Support SEPARATOR in the group_concat aggregate function.
• Support the BinaryJSON type.
• Add a config for the SQL parser to enable parsing syntax for window function.
• Support the http index MVCC interface.

Fixed

• Show the index column length if necessary in show create table statement.
• Clear the delta info when rolling back a transaction.
• Only set defaultValues in aggregation push down.
• Fix a bug when applying meets index join.

Improved

• Support analyzing all indices statements.
• Load timezone from TiKV when starting a new session.
• Support date_format push down.
• NewIndexLookUpJoin executor for Chunk.
• Attach the requiredProp info to physical plans.
• Support tls connection to pd and tikv.
• Support Chunk in executors:
  • DDLExec
  • CancelDDLJobsExec
  • ShowDDLExec
  • PrepareExec
  • CheckTableExec
  • SelectLockExec
  • ExplainExec
  • SetExecutor
  • ExistsExec
  • UpdateExec
  • JoinResultGenerator

Weekly update in TiSpark

Last week, we landed 10 PRs in the TiSpark repositories.

Fixed

• Fix the PD cache invalidation not synced for the TiSpark side.
• Fix the Region Request failure not synced with the TiSpark driver.
• Fix the inconsistent datatype mapping for Datetime type.
• Fix inconsistent datatype mapping for DOUBLE type.
• Fix not printing index name in plan.
• Fix the schema change that causes a SQL failure.
• Fix inconsistency of the timestamp unit.

Weekly update in TiKV and PD

Last week, we landed 14 PRs in the TiKV and PD repositories.

Added

• Coprocessor: support date_format.
• Pd/Client: support get_region_info.
• Worker: add pending capacity.
• Storage: add more fail points.

Fixed

• Tests: use the same RocksDB configuration as production.
• PD: fix the stale region info when overlapping.
• PD: fix tls for join.
• PD: fix the panic that the cluster status is nil.

Improved

• Update Prometheus.
• Use the lower case of logrus.
• Correct a typo.