MySQL Cluster NDB 7.2.3 is a new development preview release of
MySQL Cluster, incorporating new features in the
NDB storage engine for testing and
Obtaining MySQL Cluster NDB 7.2. MySQL Cluster NDB 7.2 source code and binaries can be obtained from http://dev.mysql.com/downloads/cluster/.
This release also incorporates all bugfixes and changes made in previous MySQL Cluster releases, as well as all bugfixes and feature changes which were added in mainline MySQL 5.5 through MySQL 5.5.17 (see Changes in MySQL 5.5.17 (2011-10-19)).
Functionality Added or Changed
data node configuration parameter to enable control of multiple
threads and CPUs when using ndbmtd, by
assigning threads of one or more specified types to execute on
one or more CPUs. This can provide more precise and flexible
control over multiple threads than can be obtained using the
Important Change; Cluster Replication:
A unique key constraint violation caused
NDB slaves to stop rather than to
continue when the
IDEMPOTENT. In such cases,
NDB now behaves as other MySQL
storage engines do when in
data node configuration parameter, which specifies a percentage
of data node resources to hold in reserve for restarts. The
resources monitored are
IndexMemory, and any
MAX_ROWS settings (see
CREATE TABLE Syntax). The default value of
MinFreePct is 5, which
means that 5% from each these resources is now set aside for
TRUNCATE TABLE on
mysql.procs_priv, when these tables had been
converted to MySQL Cluster distributed grant tables, caused
mysqld to crash.
Restarting an SQL node configured for distributed grants could sometimes result in a crash. (Bug #13340819)
Previously, forcing simultaneously the shutdown of multiple data
SHUTDOWN -F in the
ndb_mgm management client could cause the
entire cluster to fail. Now in such cases, any such nodes are
forced to abort immediately.
With many SQL nodes, all writing binary logs, connected to a
RENAME TABLE could
cause data node processes (ndbmtd) to fail.