MySQL Community Server 5.5.14 has been released

Dear MySQL users,

MySQL 5.5.14 is a new version of the 5.5 production release of the
world's most popular open source database. MySQL 5.5.14 is recommended
for use on production systems.

MySQL 5.5 includes several high-impact enhancements to improve the
performance and scalability of the MySQL Database, taking advantage of
the latest multi-CPU and multi-core hardware and operating systems. In
addition, with release 5.5, InnoDB is now the default storage engine for
the MySQL Database, delivering ACID transactions, referential integrity
and crash recovery by default.

MySQL 5.5 also provides a number of additional enhancements including:

- Significantly improved performance on Windows, with various Windows
specific features and improvements
- Higher availability, with new semi-synchronous replication and
Replication Heart Beat
- Improved usability, with Improved index and table partitioning,
SIGNAL/RESIGNAL support and enhanced diagnostics, including a new
Performance Schema monitoring capability.

For a more complete look at what's new in MySQL 5.5, please see the
following resources:

MySQL 5.5 is GA, Interview with Tomas Ulin:

http://dev.mysql.com/tech-resources/interviews/thomas-ulin-m ysql-55.html

Documentation:

http://dev.mysql.com/doc/refman/5.5/en/mysql-nutshell.html


Whitepaper: What's New in MySQL 5.5:


http://dev.mysql.com/why-mysql/white-papers/mysql-wp-whatsne w-mysql-55.php

If you are running a MySQL production level system, we would like to
direct your attention to MySQL Enterprise Edition, which includes the
most comprehensive set of MySQL production, backup, monitoring,
modeling, development, and administration tools so businesses can
achieve the highest levels of MySQL performance, security and uptime.

http://mysql.com/products/enterprise/

For information on installing MySQL 5.5.14 on new servers, please see
the MySQL installation documentation at

http://dev.mysql.com/doc/refman/5.5/en/installing.html

For upgrading from previous MySQL releases, please see the important
upgrade considerations at:

http://dev.mysql.com/doc/refman/5.5/en/upgrading.html

MySQL Database 5.5 is available in source and binary form for a number
of platforms from our download pages at:

http://dev.mysql.com/downloads/mysql/

Not all mirror sites may be up to date at this point in time, so if you
can't find this version on some mirror, please try again later or choose
another download site.

We welcome and appreciate your feedback, bug reports, bug fixes,
patches, etc.:

http://forge.mysql.com/wiki/Contributing

The following section lists the changes in the MySQL source code since
the previous released version of MySQL 5.5. It may also be viewed
online at:

http://dev.mysql.com/doc/refman/5.5/en/news-5-5-14.html

Enjoy!


Changes in MySQL 5.5.14 :

Functionality added or changed:

* CMake configuration support on Linux now provides a boolean
ENABLE_GCOV option to control whether to include support for
gcov. (Bug #12549572)

* InnoDB now permits concurrent reads while creating a secondary
index. (Bug #11853126)
See also Bug #11751388, Bug #11784056, Bug #11815600.

* Client programs now display more information for SSL errors to
aid in diagnosis and debugging of connection problems. (Bug
#21287, Bug #11745920)

* In the audit plugin interface, the event_class member was
removed from the mysql_event_general structure and the calling
sequence for the notification function changed. Originally,
the second argument was a pointer to the event structure. The
function now receives this information as two arguments: an
event class number and a pointer to the event. Corresponding
to these changes, MYSQL_AUDIT_INTERFACE_VERSION was increased
to 0x0300.
The plugin_audit.h header file, and the NULL_AUDIT example
plugin in the plugin/audit_null directory have been modified
per these changes. See Section 21.2.4.7, "Writing Audit
Plugins."

Bugs fixed:

* Replication: A mistake in thread cleanup could cause a
replication master to crash. (Bug #12578441)

* Replication: When using row-based replication and attribute
promotion or demotion (see Section 15.4.1.6.2, "Replication of
Columns Having Different Data Types"), memory allocated
internally for conversion of BLOB columns was not freed
afterwards. (Bug #12558519)

* Adding support for Windows authentication to libmysql
introduced a link dependency on the system Secur32 library.
The Microsoft Visual C++ link information was modified to pull
in this library automatically. (Bug #12612143)

* In some cases, memory allocated for
Query_tables_list::sroutines() was not freed properly. (Bug
#12429877)

* After the fix for Bug#11889186, MAKEDATE() arguments with a
year part greater than 9999 raised an assertion. (Bug
#12403504)

* An assertion could be raised due to a missing NULL value check
in Item_func_round::fix_length_and_dec(). (Bug #12392636)

* An assertion could be raised during two-phase commits if the
binary log was used as the transaction coordinator log. (Bug
#12346411)

* A problem introduced in 5.5.11 caused very old (MySQL 4.0)
clients to be unable to connect to the server. (Bug #61222,
Bug #12563279)

* Using CREATE EVENT IF NOT EXISTS for an event that already
existed and was enabled caused multiple instances of the event
to run. (Bug #61005, Bug #12546938)

* An embedded client would abort rather than issue an error
message if it issued a TEE command (\T file_name) and the
directory containing the file did not exist. This occurred
because the wrong error handler was called. (Bug #57491, Bug
#11764633)

* On some platforms, the Incorrect value: xxx for column yyy at
row zzz error produced by LOAD DATA INFILE could have an
incorrect value of zzz. (Bug #46895, Bug #11755168)

* An attempt to install nonexistent files during installation
was corrected. (Bug #43247, Bug #11752142)

* On FreeBSD 64-built builds of the embedded server, exceptions
were not prevented from propagating into the embedded
application. (Bug #38965, Bug #11749418)

Hery Ramilison
MySQL/ORACLE Release Engineering Team



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