2017-11-06-tidb-weekly.md

title	date	summary	tags
Weekly update (October 30 ~ November 05, 2017)	2017-11-06	Last week, we landed 51 PRs in the TiDB repositories and 16 PRs in the TiKV repositories.	TiDB TiKV

Weekly update in TiDB

Last week, we landed 51 PRs in the TiDB repositories.

Added

• Provide the command option and log the success/fail information for slow-query.

Removed

• Remove the old planner.
• Remove xeval.
• Remove the localstore storage engine.

Fixed

• Change the selection plan to dual plan directly if the condition is always false.
• Insert column char(4) with latin1 charset by incorrect padding.
• Remove the check of initialized auto ID.
• Support alter table add column(...).
• Fix a bug in JSON decoding.
• Use utf8_bin for unsupported column collation.
• Fix the bug of alter table table_options, other_alter_specification.

Improved

• Move the safepoint checker to tikvStore.
• Enable pushing float down to TiKV.
• Fix estimation in index point query.
• No longer add enforcer.
• Improve index join to support all join types.
• Extract the process of getting full CMP type to method.
• Opentracing for Execute, ParseSQL, Compile, and runStmt.
• Reduce growslice in dumpRowValuesBinary.

New Contributor (Thanks!)

• wudi

Weekly update in TiKV

Last week, We landed 16 PRs in the TiKV repositories.

Added

• Add recursion limit check for coprocessor.
• Reset the RocksDB statistics periodically.

Fixed

• Save the region meta information to cache even if it is failed to be written to the disk.
• Fix the read statistics.
• Clear the hot store related gauges when store is not hot any more.
• Fix the LIKE behavior.

Improved

• Move operator influence into ShouldBalance.
• Reduce allocation.
• Remove the pending peer before adding a new peer.
• Refactor the split check.
• Add limitation for key size.

New Contributor (Thanks!)

• wudi