2018-05-02-tidb-weekly.md

title	date	summary	tags
Weekly update (April 23 ~ April 29, 2018)	2018-05-02	Last week, we landed 49 PRs in the TiDB repositories, 18 PRs in the TiSpark repositories, and 21 PRs in the TiKV and PD repositories.	TiDB TiKV PD TiSpark

Weekly update in TiDB

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

Added

• Add the CHANGELOG.md file to the TiDB repository
• Support more ODBC syntaxes
• Support PARTITION BY RANGE COLUMNS in SHOW CREATE TABLE
• Support the ALTER CONVERT TO syntax
• Support the ALTER TABLE AUTO_INCREMENT syntax
• Support the SET NAMES COLLATE DEFAULT syntax

Fixed

• Fix Dump/Load statistics information
• Fix data race on the LockKeys() function
• Fix range calculating in the TableHandlesToKVRanges() function
• Fix the compatibility problem of the UNION statement
• Fix the wrong behavior of the tryToGetMemTask() function
• Refine the optimization rule of "TopN Push Down"

Improved

• Add more log information about slow queries
• Log the slow Coprocessor task in detail
• Enhance the validation of column names when creating a table

Weekly update in TiSpark

Last week, we released TiSpark 1.0 GA and landed 18 PRs in the TiSpark repositories.

Fixed

• Fix the leaky session
• Fix the unsigned index
• Fix the logic of handling the stale epoch error
• Fix the logic of handling zero store ID
• Fix the map single table method

Improved

• Allow forcing the metadata to refresh
• Adjust the retry policy factor and cache invalidation

Weekly update in TiKV and PD

Last week, we landed 21 PRs in the TiKV and PD repositories.

Added

• Add the change log for TiKV
• Add the change log for 2.0 GA
• Add metrics for hotspot cache
• Do fuzz test

Fixed

• Improve the Key Scan feature and fix a bug for MVCC

Improved

• Refine the installation instructions
• Collect Raft's log
• Adjust clean_stale_peer_delay
• Merge (RAW)KV_COMMAND_COUNTER into COMMAND_COUNTER
• Release the log cache eagerly using GC