[MySQL][Spider][VP]Spider-2.27 VP-0.16 released

I'm pleased to announce the release of Spider storage engine version 2.27(beta) and Vertical Partitioning storage engine version 0.16(beta).
Spider is a Storage Engine for database sharding.
http://spiderformysql.com/
Vertical Partitioning is a Storage Engine for vertical partitioning for a table.
http://launchpad.net/vpformysql

Please use the following for downloading binary file.
http://spiderformysql.com/download_spider.html

The main changes in this version are following.
Q4M is bundled for Linux 64bit.
  Bundled Q4M supports replication, but please use it carefully.

Spider
- Support R-Tree index.
- Support direct updating for SQL access.
- Support handlersocket increment and decrement.
- Change table parameter from "net_timeout" to "connect_timeout", "net_read_timeout" and "net_write_timeout".
- Change server parameter from "spider_net_timeout" to "spider_connect_timeout", "spider_net_read_timeout" and "spider_net_write_timeout".
- Add UDF paramter "access_mode". "spider_direct_sql" support handlersocket access.
- Add server parameter "spider_hs_ping_interval", "spider_error_read_mode" and "spider_error_write_mode".
- Add table parameter "hs_write_to_read", "error_read_mode" and "error_write_mode".
- Performance improvement for "COUNT(*)", "MAX" and "MIN" without clause.
Note
- Change parameter from "net_timeout" and "spider_net_timeout" to "connect_timeout", "net_read_timeout", "net_write_timeout", "spider_connect_timeout", "spider_net_read_timeout" and "spider_net_write_timeout" from this version.
- From this version, you can't compile with static link option for Spider.

Vertical Partitioning
- Support R-Tree index.
- Support direct updating.
- Support handlersocket increment and decrement.
Note
- From this version, you can't compile with static link option for VP.

handlersocket
- Add server parameter "handlersocket_general_log".
  Logging handlersocket request into general log with "general_log=on". This parameter is global parameter and you can change it from SQL interface.

Please see "99_change_logs.txt" in the download documents for checking other changes.

Enjoy!