2016-10-31-tidb-weekly.md

title	Weekly update (October 24 ~ October 30, 2016)
date	2016-10-31
summary	Last week, we landed 24 PRs in the TiDB repositories and 28 PRs in the TiKV repositories.
tags	TiDB TiKV Placement Driver

Weekly update (October 24 ~ October 30, 2016)

Last week, we landed 24 PRs in the TiDB repositories and 28 PRs in the TiKV repositories.

Notable changes to TiDB

• Support coalesce/case when pushing down on local storage。

• Support showing indexes in the table syntax.

• Split eval.go into some smaller files to make code cleaner.

• Fix a bug about truncating data.

• Fix the mysql version number format.

• Fix a bug about dropping the nonexist foreign key.

• Fix a bug in the parser where hexadecimal was parsed as string.

• Add comments for executor package to improve code readability.

• Add a command line flag to print binary version.

• Add a command line flag to prevent cartesian product.

Notable changes to TiKV

• Compact region automatically after deleting lots of keys.
• Remove the rocksdb DSN for the tikv-server command flag.
• Use an atomic value to control the snapshot progress.
• Add timer for latch waiting.
• Check the region range before replicating a peer.
• Make sure the callback command is called.
• Coprocessor supports the multiply operator.
• Coprocessor supports the case whenoperator.
• Record the last compacted index to speed up compacting the Raft log.

Notable changes to Placement Driver

• Refactor store/region cache to make code clearer, including PR 353, 365, 366.
• Support the GetPDMembers API.

New contributors

• Librazy