MySQL 5.6 Release Notes
CMake
support was added for compiling with
Developer Studio 12.5.
(Bug #82249, Bug #24303829, Bug #81274, Bug #23212938)
In mysql-test-run.pl, a limit of 50 was imposed on the number of workers for parallel testing, which on systems with more than 50 CPUs resulted in exhaustion of unique thread IDs. The ID-exhaustion problem has been corrected, and the limit of 50 on number of workers has been lifted. Thanks to Daniel Black for the patch on which this change was based. Additionally, these changes were made:
To avoid idle workers, the number of parallel workers now is limited to the number of tests.
Previously, if --parallel=auto
was given
and the MTR_MAX_PARALLEL
environment
variable was not set, a limit of 8 was imposed on the number
of parallel workers. This limit has been lifted.
(Bug #22342399, Bug #79585)
InnoDB: An operation that dropped and created a full-text search table raised an assertion. (Bug #24315031)
InnoDB: Accessing full-text search auxiliary tables while dropping the indexed table raised an assertion. (Bug #24009272)
InnoDB:
An online DDL operation on a table with indexed
BLOB
columns raised an assertion
during logging of table modifications.
(Bug #23760086)
Replication:
mysqlbinlog --read-from-remote-server log1
log2 was opening a new connection for
log2
without freeing the connection used for
log1
. Thanks to Laurynas Biveinis for the
contribution.
(Bug #81675, Bug #23540182)
Replication:
With binlog_row_image=FULL
,
when updating single tables temporary tables were unnecessarily
being used. The fix ensures single table update follows the same
pattern as multi-table update.
(Bug #79867, Bug #22510353)
For mysqld_safe, the argument to
--malloc-lib
now must be one
of the directories /usr/lib
,
/usr/lib64
,
/usr/lib/i386-linux-gnu
, or
/usr/lib/x86_64-linux-gnu
. In addition, the
--mysqld
and
--mysqld-version
options are
accepted only on the command line, not in option files.
(Bug #24464380)
References: See also: Bug #24619033, Bug #82920.
It was possible to write log files ending with
.ini
or .cnf
that
later could be parsed as option files. The general query log and
slow query log can no longer be written to a file ending with
.ini
or .cnf
.
(Bug #24388753)
Privilege escalation was possible by exploiting the way
REPAIR TABLE
used temporary
files.
(Bug #24388746)
If the basedir
system variable was set at
server startup from the command line or option file, the value
was not normalized (on Windows, /
was not
replaced with \
).
(Bug #23747899, Bug #82125)
In-place ALTER TABLE
operations
which when executed separately caused no table rebuild could
when combined into a single statement result in a table rebuild.
(Bug #23475211, Bug #81587)
A blank server name in CREATE
SERVER
statements produced a server exit rather than
an error.
(Bug #23295288)
A prepared statement that used a parameter in the select list of a derived table that was part of a join could cause a server exit. (Bug #22392374, Bug #24380263)
MEDIUMINT
columns used in
operations with long integer values could result in buffer
overflow.
(Bug #19984392)
A spurious ER_NO_SUCH_TABLE
error could occur when attempting to execute a prepared
CREATE TABLE ... SELECT
statement that used a
temporary table in the FROM
clause and called
a stored function. The same error could occur for a nonprepared
version of the statement if used in a stored procedure when the
procedure was re-executed.
(Bug #16672723, Bug #68972)
EINTR
handling in the client library has been
fixed so that interrupted read and write calls are retried.
Previously, EINTR
was ignored.
(Bug #82019, Bug #23703570)