Google Releases MySQL Enhancements

An anonymous reader noted that "Google has released its internally developed enhancements to MySQL to the open source community this week. Changes include improvements in replication, high availability configuration, and performance." It'll be interesting to see if the changes they made are of interest to other places using MySQL.

Comments

So...what do the changes actually DO?

[xxxJonBoyxxx]

So...what do the changes actually DO? This page is awfully thin on content:
http://code.google.com/p/google-mysql-tools/

These two things look like simple add-on utilities, not something for the core DB (the "compact..." one looks especially unfriendly for live DBs):

mypgrep.py - a tool, similar to pgrep, for managing mysql connections
compact_innodb.py - compacts innodb datafiles by dumping and reloading all tables

I'd like to play with this stuff:

The new features include support for "for semi-synchronous replication, mirroring the binlog from a master to a slave, quickly promoting a slave to a master during failover, and keeping InnoDB and replication state on a slave consistent during crash recovery."

...but where's the actual doc?

And why is Google releasing these for an "unsupported" version of MySQL (4.0)?

Obligatory sane link

[acidrain69]

For those that couldn't get past all the doubleclink.net stuff,
http://www.informationweek.com/news/showArticle.jh tml?articleID=199201237