MySQL 5.5.17 がリリースされました。
今回は修正項目数としては、やや少なめですね。



ダウンロードはこちらから：
http://dev.mysql.com/downloads/mysql/

今回の変更点（ＣｈａｎｇｅＬｏｇ on MySQL Manual） :
http://dev.mysql.com/doc/refman/5.5/en/news-5-5-17.html



以下チェンジログ：


■機能の追加と変更：

* Replication: Previously, replication slaves could connect to
the master server only through master accounts that use native
authentication. Now replication slaves can also connect
through master accounts that use nonnative authentication
(except Windows native authentication) if the required
client-side plugin is installed on the slave side in the
directory named by the slave plugin_dir system variable. (Bug
#12897501)

* MEMORY table creation time is now available in the CREATE_TIME
column of the INFORMATION_SCHEMA.TABLES table and the
Create_time column of SHOW TABLE STATUS output. (Bug #51655,
Bug #11759349)


■バグ修正：

* InnoDB Storage Engine: This fix improves the performance of
instrumentation code for InnoDB buffer pool operations. (Bug
#12950803, Bug #62294)

* InnoDB Storage Engine: Data from BLOB columns could be lost if
the server crashed at a precise moment when other columns were
being updated in an InnoDB table. (Bug #12704861)

* InnoDB Storage Engine: Lookups using secondary indexes could
give incorrect matches under a specific set of conditions. The
conditions involve an index defined on a column prefix, for a
BLOB or other long column stored outside the index page, with
a table using the Barracuda file format. (Bug #12601439)

* InnoDB Storage Engine: This fix corrects cases where the MySQL
server could hang or abort with a long semaphore wait message.
(This is a different issue than when these symptoms occurred
during a CHECK TABLE statement.) (Bug #11766591, Bug #59733)

* Internal conversion of zero to binary and back could yield a
result with incorrect precision. (Bug #12911710)

* Valgrind warnings generated by filesort operations were fixed.
(Bug #12856915)

* mysqld_safe did not properly check for an already running
instance of mysqld. (Bug #11878394)

* The help message for mysql_install_db did not indicate that it
supports the --defaults-file, --defaults-extra-file and
--no-defaults options. (Bug #58898, Bug #11765888)

* An assertion designed to detect zero-length sort keys also was
raised when the entire key set fit in memory. (Bug #58200, Bug
#11765254)

* myisampack could create corrupt FULLTEXT indexes when
compressing tables. (Bug #53646, Bug #11761180)

* A linking problem prevented the FEDERATED storage engine
plugin from loading. (Bug #40942, Bug #11750417)