2018-05-07-tidb-weekly.md

title	date	summary	tags
Weekly update (April 30 ~ May 06, 2018)	2018-05-07	Last week, we landed 24 PRs in the TiDB repositories, 1 PR in the TiSpark repositories, and 15 PRs in the TiKV and PD repositories.	TiDB TiKV PD TiSpark

Weekly update in TiDB

Last week, we landed 24 PRs in the TiDB repositories.

Added

• Add DB_NAME and TABLE_NAME in the result of ADMIN SHOW DDL JOBS
• Add an HTTP API to scatter Regions of a table
• Add the tidb_retry_limit session variable to control the transaction retry limit
• Add the auto_analyze_ratio session variable to control the automatic analysis ratio
• Support the ALTER TABLE FORCE syntax

Fixed

• Restrict the column type in range partition
• Check the privilege for SHOW CREATE TABLE and information_schema.tables
• Check nil for Coprocessor stream response
• Set the index name of ADMIN CHECK INDEX to be case insensitive

Improved

• Reduce the memory usage for duplicated key update
• Add the reorganization log to make trouble shooting easier
• Add failure metrics for checkLeader and prepare

Weekly update in TiSpark

Last week, we landed 1 PR in the TiSpark repositories.

Fixed

• Fix the TopN validation issue

Weekly update in TiKV and PD

Last week, we landed 15 PRs in the TiKV and PD repositories.

Added

• Support compacting the whole cluster
• Scatter the leader distribution in a specified range

Fixed

• Resign the PD leader when it is not the same as the etcd leader
• Fix the parse error of config.toml
• Fix the bug of deleting the valid scheduler when starting the coordinator

Improved

• Attach an interval to Region heartbeats
• Open the nightly feature gate for crossbeam-channel
• Upgrade etcd to v3.3.4