MySQLニュース

MySQL 5.6.14がリリースされました

オリジナル版:http://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-14.html

ポピュラーなオープンソースデータベースの新バージョンであるMySQL 5.6.14がリリースされました。MySQL 5.6.14はプロダクションシステムでの使用を推奨されています。

MySQL 5.6の新機能の概要については、以下を参照してください。

http://dev.mysql.com/doc/refman/5.6/en/mysql-nutshell.html

MySQL 5.6.11から、完全インストーラとWebインストーラーのMySQL 5.6用のMicrosoft Windowsパッケージがご利用いただけます。完全インストーラーは非常に大きく、利用可能な最新のソフトウェアリリースがバンドルされています。このバンドルは簡単にダウンロードでき、完全なサーバと開発スイートを設定できます。

Webインストーラは実際の製品をまったく含んでおらず、その代わりにインストールを選択した製品を要求に応じてダウンロードします。ダウンロードサイズは小さいですが、ダウンロードが必要な個々の製品をインストールする時間が長くなります。

新しいサーバにMySQL 5.6.13をインストールするもしくは以前のバージョンからアップグレードする情報については、以下を参照してください。

http://dev.mysql.com/doc/refman/5.6/en/installing.html

 

MySQL Serverは、ダウンロード・ページからソースコード及び多くのプラットフォームのためのバイナリで現在利用可能です。

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

すべてのミラーサイトが現在、最新であるとは限らないことに注意してください。あるミラーサイトでこのバージョンを見つけることができない場合は、再度確認を行うか、あるいは別のダウンロード・サイトを選択してください。

私たちはフィードバック、バグレポート、バグ修正、パッチなどを歓迎します。

https://wikis.oracle.com/display/mysql/Contributing

次のセクションにはMySQL 5.6の以前のリリースからのMySQLソースコードの変更が記載されています。オンラインでも閲覧できます
http://dev.mysql.com/doc/refman/5.6/en/news-5-6-14.html

Changes in MySQL 5.6.14 (2013-09-20)

Bugs Fixed

* InnoDB; Partitioning: Following any query on the
INFORMATION_SCHEMA.PARTITIONS table, InnoDB index statistics
as shown in the output of statements such as SHOW INDEX were
updated, even with innodb_stats_on_metadata=OFF. (Bug
#16860588)

* InnoDB: When logging the delete-marking of a record during
online ALTER TABLE...ADD PRIMARY KEY, InnoDB writes the
transaction ID to the log as it was before the deletion or
delete-marking of the record. When doing this, InnoDB would
overwrite the DB_TRX_ID field in the original table, which
could result in locking issues. (Bug #17316731)

* InnoDB: The row_sel_sec_rec_is_for_clust_rec function would
incorrectly prepare to compare a NULL column prefix in a
secondary index with a non-NULL column in a clustered index.
(Bug #17312846)

* InnoDB: An incorrect purge would occur when rolling back an
update to a delete-marked record. (Bug #17302896)

* InnoDB: An assertion would be raised in fil_node_open_file due
to a missing .ibd file. Instead of asserting, InnoDB should
return false and the caller of fil_node_open_file should
handle the return message. (Bug #17305626, Bug #70007)

* InnoDB: The assertion ut_ad(oldest_lsn <= cur_lsn) in file
buf0flu.cc would fail because the current max LSN would be
retrieved from the buffer pool before the oldest LSN. (Bug
#17252421)

* InnoDB: InnoDB memcached add and set operations would perform
more slowly than SQL INSERT operations. (Bug #17214191)

* InnoDB: The InnoDB memcached plugin could be initialized to
insert into an InnoDB table with an INTEGER primary key. (Bug
#17203937)

* InnoDB: As commented in log0log.h, old_lsn and old_buf_free
should only be compiled when UNIV_LOG_DEBUG is enabled. (Bug
#17160270, Bug #69724)

* InnoDB: InnoDB would rename a user-defined foreign key
constraint containing the string "_ibfk_" in its name,
resulting in a duplicate constraint. (Bug #17076737, Bug
#69693, Bug #17076718, Bug #69707)

* InnoDB: A regression introduced in the fix for Bug #14606334
would cause crashes on startup during crash recovery. (Bug
#16996584)

* InnoDB: Rolling back an INSERT after a failed BLOB write would
result in an assertion failure. The assertion has been
modified to allow NULL BLOB pointers if an error occurs during
a BLOB write. (Bug #16971045)

* InnoDB: The ha_innobase::clone function would incorrectly
assert that a thread cannot clone a table handler that is used
by another thread, and that the original table handler and the
cloned table handler must belong to the same transaction. The
incorrect assertions have been removed. (Bug #17001980)

* InnoDB: When dropping all indexes on a column with multiple
indexes, InnoDB would fail to block a DROP INDEX operation
when a foreign key constraint requires an index. (Bug
#16896810)

* InnoDB: An assertion failure would occur in file row0log.cc on
ROW_FORMAT=REDUNDANT tables that contained an unexpected but
valid data directory flag. (Bug #16863098)

* InnoDB: A regression introduced with the fix for Bug #11762038
would cause InnoDB to raise an incorrect error message. The
message stated that, "InnoDB cannot delete/update rows with
cascading foreign key constraints that exceed max depth of
20". The error message would occur when killing connections
reading from InnoDB tables that did not have foreign key
constraints. (Bug #16710923)

* InnoDB: In debug builds, an assertion failure would occur if
innodb_log_group_home_dir does not exist. Instead of an
assertion, InnoDB now aborts with an error message if
innodb_log_group_home_dir does not exist. (Bug #16691130, Bug
#69000)

* InnoDB: For the Barracuda file format and beyond, the
externally stored prefix would be read even though the prefix
is already stored locally in memory. (Bug #16569640)

* InnoDB: When changing the shared tablespace file name using
innodb_data_file_path and leaving the current log files in
place, InnoDB would create a new tablespace file and overwrite
the log files resulting in a mismatch between the data
dictionary and tables on disk. This bug fix ensures that
InnoDB does not create a new tablespace if there are
inconsistent system tablespaces, undo tablespaces, or redo log
files. (Bug #16418661)

* InnoDB: Persistent stats would be disabled unnecessarily when
running in read-only mode. When running in read-only mode,
fetching stats from disk does not involve any modification of
on-disk data except for when ANALYZE TABLE is run. This fix
enables persistent stats for read-only mode. (Bug #16083211)

* InnoDB: The documentation incorrectly stated that START
TRANSACTION WITH CONSISTENT SNAPSHOT provides a consistent
SNAPSHOT only works with REPEATABLE READ. All other isolation
levels are ignored. The documentation has been revised and a
warning is now generated whenever the WITH CONSISTENT SNAPSHOT
clause is ignored. (Bug #14017206, Bug #65146)

* InnoDB: The srv_master_thread background thread, which
monitors server activity and performs activities such as page
flushing when the server is inactive or in a shutdown state,
runs on a one second delay loop. srv_master_thread would fail
to check if the server is in a shutdown state before sleeping.
(Bug #13417564, Bug #63276)

* InnoDB: An infinite loop could occur in buf_page_get_gen when
handling compressed-only pages. (Bug #12560151, Bug #61132)

* Replication: When the --relay-log-info-file option was used
together with --slave-parallel-workers set to a value greater
than 1, mysqld failed to start. (Bug #17160671)

* If the mysql_real_connect() C API function failed, it could
leak memory. (Bug #17337684)

* Savepoints could not be used successfully following an
ER_LOCK_DEADLOCK error (or ER_LOCK_WAIT_TIMEOUT error, if
innodb_rollback_on_timeout was enabled). (Bug #17356954)
References: This bug is a regression of Bug #14188793.

* Full-text search on InnoDB tables failed on searches that used
the + boolean operator. (Bug #17280122)

* For single-threaded workloads, the optimizer recognizes some
special cases for which it can avoid function calls and
enhance performance. (Bug #17234723)

* SELECT * from performance_schema.events_statements_current
could raise an assertion due to a race condition under load.
(Bug #17164720)

* AES_ENCRYPT() and AES_DECRYPT() failed to work correctly when
MySQL was built with an AES_KEY_LENGTH value of 192 or 256.
(Bug #17170207)

* InnoDB full-text searches failed in databases whose names
began with a digit. (Bug #17161372)

* A successful connection failed to reset the per-IP address
counter used to count successive connection failures. This
could possibly cause a host to be blocked, when the
max_connect_errors limit was reached. (Bug #17156507)

* Under load, truncating the accounts Performance Schema table
could cause a server exit. (Bug #17084615)

* With the thread pool plugin enabled and SSL in use, an error
in one connection might affect other connections, causing them
to experience a lost connection. (Bug #17087862)

* Within a stored program, comparison of the value of a scalar
subquery with an IN clause resulted in an error for the first
execution and raised an assertion for the second execution.
(Bug #17029399)

* A race condition in the thread pool plugin could cause status
variables such as Aborted_connects not to be incremented and
permitting concurrent kills to happen for the same thread ID.
(Bug #16959022)

* The my_strtoll10() function could incorrectly convert some
long string-format numbers to numeric values and fail to set
the overflow flag. (Bug #16997513)

* Excessive memory consumption was observed for multiple
execution of a stored procedure under these circumstances: 1)
The stored procedure had an SQL statement that failed during
validation. 2) The stored procedure had an SQL statement that
required repreparation. (Bug #16857395)

* For partitioned tables, queries could return different results
depending on whether Index Merge was used. (Bug #16862316)

* For some statements, memory leaks could result when the
optimizer removed unneeded subquery clauses. (Bug #16807641)
References: This bug is a regression of Bug #15875919.

* Password rewriting in the general query log now also applies
to prepared statements. (Bug #16732621)

* Within a stored procedure, repeated execution of a prepared
CREATE TABLE statement for a table with partitions could cause
a server exit. (Bug #16614004)

* For debug builds, when the optimizer removed an Item_ref
pointing to a subquery, it caused a server exit. (Bug
#16509874)
References: This bug is a regression of Bug #16318585.

* If the primary key for the mysql.proc system table was removed
(an unsupported and not-recommended operation), the server
exited for subsequent stored procedure invocation. Similar
problems could occur for other system tables. Now an error
occurs instead. (Bug #16373054)

* Deadlocks involving metadata locks and InnoDB deadlocks were
both reported as an ER_LOCK_DEADLOCK error, but only InnoDB
deadlocks rolled back the transaction. Now both deadlocks roll
back the transaction. (Bug #14188793)

* Metadata returned for a prepared SELECT statement that had
outer joins could indicate that columns containing NULL values
were NOT NULL. (Bug #12818811)

* For queries that accessed an INFORMATION_SCHEMA table in a
subquery, and attempt to lock a mutex that had already been
locked could cause a server crash. (Bug #11765744)

* For failure to create a new thread for the event scheduler,
event execution, or new connection, no message was written to
the error log. This could lead to the impression that the
event scheduler was running normally when it was not. (Bug
#67191, Bug #14749800, Bug #16865959)

* mysqldump wrote SET statements as SET OPTION, which failed
when reloaded because the deprecated OPTION keyword has been
removed from SET syntax. (Bug #67507, Bug #15844882)

* For better robustness against stack overflow, the server now
accounts for the size of the guard area when making thread
stack size requests. (Bug #35019, Bug #11748074)

* The libmysql.dll library was missing several symbols: my_init,
mysql_client_find_plugin, mysql_client_register_plugin,
mysql_load_plugin, mysql_load_plugin_v, mysql_options4, and
mysql_plugin_options. (Bug #69204, Bug #16797982, Bug #62394)

* If one connection changed its default database and
simultaneously another connection executed SHOW PROCESSLIST,
the second connection could access invalid memory when
attempting to display the first connection's default database.
memory. (Bug #58198, Bug #11765252)

* Full-text search on InnoDB tables failed on searches for words
containing apostrophes when using boolean operators. (Bug
#69932, Bug #17276125)

* InnoDB deadlock caused transaction rollback but did not
release metadata locks, blocking concurrent DDL on the
transaction tables until the connection that got the deadlock
issued an explicit COMMIT or ROLLBACK. (Bug #69668, Bug
#17054007)

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